[PATCH v2 4/5] test/bpf: move to examples folder

[Bruce Richardson <bruce.richardson@intel.com>]

The bpf folder didn't actual contain a test application, but instead
basic examples of BPF code for use with testpmd. Therefore we can
move it to the `examples` folder. Being different, it also needs
a README with it, explaining what it is and how to use it. References
to the code from the testpmd docs are suitably updated.

CC: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 MAINTAINERS                                 | 2 +-
 doc/guides/testpmd_app_ug/testpmd_funcs.rst | 8 ++++----
 examples/bpf/README                         | 8 ++++++++
 {test => examples}/bpf/dummy.c              | 0
 {test => examples}/bpf/mbuf.h               | 0
 examples/bpf/meson.build                    | 6 ++++++
 {test => examples}/bpf/t1.c                 | 0
 {test => examples}/bpf/t2.c                 | 0
 {test => examples}/bpf/t3.c                 | 0
 9 files changed, 19 insertions(+), 5 deletions(-)
 create mode 100644 examples/bpf/README
 rename {test => examples}/bpf/dummy.c (100%)
 rename {test => examples}/bpf/mbuf.h (100%)
 create mode 100644 examples/bpf/meson.build
 rename {test => examples}/bpf/t1.c (100%)
 rename {test => examples}/bpf/t2.c (100%)
 rename {test => examples}/bpf/t3.c (100%)

diff --git a/MAINTAINERS b/MAINTAINERS
index c4619174a..6d1d0aea7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1230,7 +1230,7 @@ F: doc/guides/howto/telemetry.rst
 BPF - EXPERIMENTAL
 M: Konstantin Ananyev <konstantin.ananyev@intel.com>
 F: lib/librte_bpf/
-F: test/bpf/
+F: examples/bpf/
 F: test/test/test_bpf.c
 F: doc/guides/prog_guide/bpf_lib.rst
 
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 029148041..b079c60d9 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -4503,20 +4503,20 @@ For example:
 
 .. code-block:: console
 
-   cd test/bpf
+   cd examples/bpf
    clang -O2 -target bpf -c t1.c
 
 Then to load (and JIT compile) t1.o at RX queue 0, port 1::
 
 .. code-block:: console
 
-   testpmd> bpf-load rx 1 0 J ./dpdk.org/test/bpf/t1.o
+   testpmd> bpf-load rx 1 0 J ./dpdk.org/examples/bpf/t1.o
 
 To load (not JITed) t1.o at TX queue 0, port 0::
 
 .. code-block:: console
 
-   testpmd> bpf-load tx 0 0 - ./dpdk.org/test/bpf/t1.o
+   testpmd> bpf-load tx 0 0 - ./dpdk.org/examples/bpf/t1.o
 
 bpf-unload
 ~~~~~~~~~~
@@ -4529,4 +4529,4 @@ For example to unload BPF filter from TX queue 0, port 0:
 
 .. code-block:: console
 
-   testpmd> bpf-load tx 0 0 - ./dpdk.org/test/bpf/t1.o
+   testpmd> bpf-unload tx 0 0
diff --git a/examples/bpf/README b/examples/bpf/README
new file mode 100644
index 000000000..d714180a5
--- /dev/null
+++ b/examples/bpf/README
@@ -0,0 +1,8 @@
+This folder contains example BPF programs for use with the DPDK bpf
+library. To get details of each program and how to compile it, see
+the header on the '.c' file itself.
+
+Once compiled, these example programs can be loaded into `testpmd`
+for execution on a packet stream. See `bpf-load` and `bpf-unload`
+commands documented in the `Testpmd Application User Guide` for
+details on how to do so.
diff --git a/test/bpf/dummy.c b/examples/bpf/dummy.c
similarity index 100%
rename from test/bpf/dummy.c
rename to examples/bpf/dummy.c
diff --git a/test/bpf/mbuf.h b/examples/bpf/mbuf.h
similarity index 100%
rename from test/bpf/mbuf.h
rename to examples/bpf/mbuf.h
diff --git a/examples/bpf/meson.build b/examples/bpf/meson.build
new file mode 100644
index 000000000..0a817aaea
--- /dev/null
+++ b/examples/bpf/meson.build
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2019 Intel Corporation
+
+# This contains BPF example code for use in testing BPF with testpmd,
+# therefore it should not be built as part of a meson build.
+build=false
diff --git a/test/bpf/t1.c b/examples/bpf/t1.c
similarity index 100%
rename from test/bpf/t1.c
rename to examples/bpf/t1.c
diff --git a/test/bpf/t2.c b/examples/bpf/t2.c
similarity index 100%
rename from test/bpf/t2.c
rename to examples/bpf/t2.c
diff --git a/test/bpf/t3.c b/examples/bpf/t3.c
similarity index 100%
rename from test/bpf/t3.c
rename to examples/bpf/t3.c
-- 
2.20.1