Preserve local WiFi receiver flowgraph layout

fixes #423

.conda/README.md

@@ -0,0 +1,110 @@
+# gr-ieee802_11 conda recipe
+
+This recipe is for creating a package that can be installed into a [conda](https://docs.conda.io/en/latest/) environment. See the [Conda GNU Radio Guide](https://wiki.gnuradio.org/index.php/CondaInstall) for more information on using GNU Radio with conda.
+
+Packages for GNU Radio and some out-of-tree (OOT) modules are available through the [`conda-forge` channel](https://conda-forge.org/). If this OOT module is already available (search "gnuradio" on [anaconda.org](https://anaconda.org)), it is preferable to use that existing package rather than this recipe.
+
+#### Users
+
+- [Building the package](#building-the-package)
+
+#### Developers
+
+- [Modifying the recipe](#modifying-the-recipe)
+- [Continuous integration](#continuous-integration)
+
+
+## Building the package
+
+(See the [Conda GNU Radio Guide](https://wiki.gnuradio.org/index.php/CondaInstall) if you are unfamiliar with how to use conda.)
+
+1. Make sure that have `conda-build` and `conda-forge-pinning` installed and updated in your base environment:
+
+        conda activate base
+        conda install -n base conda-build conda-forge-pinning
+        conda upgrade -n base conda-build conda-forge-pinning
+
+    **Windows users only**: you will also need to have Microsoft's Visual C++ build tools installed. Usually you can do this by installing the [Community edition of Visual Studio](https://visualstudio.microsoft.com/free-developer-offers/) and then selecting a MSVC C++ x64/x86 build tools component under the list of "Individual Components". As of this writing, you will specifically need MSVC v141, i.e. the "MSVC v141 - VS2017 C++ x64/x86 build tools (v14.16)" component. If the build fails to find the version of MSVC it is looking for, try installing other (newer) versions.
+
+2. Download the source code for this OOT module (which includes this recipe). Typically, this is done by using `git` and cloning the module's repository:
+
+        git clone <repository_url>
+        cd <repository_name>
+
+3. Run `conda-build` on the recipe to create the package:
+
+    (Linux and macOS)
+
+        conda build .conda/recipe/ -m ${CONDA_PREFIX}/conda_build_config.yaml
+
+    (Windows)
+
+        conda build .conda\recipe\ -m %CONDA_PREFIX%\conda_build_config.yaml
+
+    If you plan on using this package within an existing environment which uses a specific version of Python, specify the version of Python using the `--python` flag. You must use a version string that matches one of the strings listed under `python` in the `${CONDA_PREFIX}/conda_build_config.yaml` file, e.g:
+
+    (Linux and macOS)
+
+        conda build .conda/recipe/ -m ${CONDA_PREFIX}/conda_build_config.yaml --python="3.9.* *_cpython"
+
+    (Windows)
+
+        conda build .conda\recipe\ -m %CONDA_PREFIX%\conda_build_config.yaml --python="3.9.* *_cpython"
+
+    If you encounter errors, consult with the OOT module maintainer or the maintainers of the [gnuradio feedstock](https://github.com/conda-forge/gnuradio-feedstock). It is possible that the recipe will need to be updated.
+
+4. Install the package into an existing environment
+
+        conda install --use-local -n <environment_name> gnuradio-EXAMPLE
+
+    or create a new environment that includes the package:
+
+        conda create -n test_env gnuradio-EXAMPLE
+
+
+## Modifying the recipe
+
+This recipe is derived from a template, and so it is best to check it and make any necessary modifications. Likely changes include:
+
+- Populating metadata near the bottom of the `recipe/meta.yaml` file
+- Adding "host" (build-time) and "run" (run-time) dependencies specific to your module in `recipe/meta.yaml`
+- Adding special configuration flags or steps are necessary to carry out the build to the build scripts (`recipe/build.sh` for Linux/macOS and `recipe/bld.bat` for Windows)
+
+Specifying the versions of GNU Radio that your OOT is compatible with is one of the most important modifications. Following the instructions below, the module will be built against the conda-forge "pinned" version of GNU Radio, which is usually the latest version.
+
+- To override the pinned version of GNU Radio (e.g. for a branch that builds against an older version), specify the `gnuradio_core` key as instructed in `recipe/conda_build_config.yaml`.
+- If the module is compatible with multiple major versions of GNU Radio, and you want to build against multiple of them, you can also add extra versions to `recipe/conda_build_config.yaml` to expand the default build matrix.
+
+See the [conda-build documentation](https://docs.conda.io/projects/conda-build/en/latest/index.html) for details on how to write a conda recipe.
+
+
+## Continuous integration
+
+Only a few steps are needed to use this recipe to build and test this OOT module using CI services. It can also be used to upload packages to [anaconda.org](https://anaconda.org) for others to download and use.
+
+1. Make sure that have `conda-smithy` installed in your base conda environment:
+
+        conda activate base
+        conda install -n base conda-smithy
+        conda upgrade -n base conda-smithy
+
+2. Make any changes to the recipe and `conda-forge.yml` that are necessary. For example, if you plan on uploading packages to your own [anaconda.org](https://anaconda.org) channel, specify the channel name and label as the `channel_targets` key in `recipe/conda_build_config.yaml`. Commit the changes to your repository:
+
+        git commit -a
+
+3. "Re-render" the CI scripts by running conda-smithy from the root of your repository:
+
+        conda-smithy rerender --feedstock_config .conda/conda-forge.yml -c auto
+
+    This will create a commit that adds or updates the CI scripts that have been configured with `conda-forge.yml`. If you want to minimize extraneous files, you can remove some of the newly-created files that are not necessary outside of a typical conda-forge feedstock:
+
+        git rm -f .github/workflows/automerge.yml .github/workflows/webservices.yml .circleci/config.yml
+        git commit --amend -s
+
+    When the CI is executed (on a pull request or commit), it will run one job per configuration file in `.ci_support` to build packages for various platforms, Python versions, and optionally `gnuradio` versions (by adding to `gnuradio_extra_pin` in `recipe/conda_build_config.yaml`).
+
+    **You should repeat this step whenever the recipe is updated or when changes to the conda-forge infrastructure require all CI scripts to be updated.**
+
+    Since the newly created files will be rewritten whenever conda-smithy is run, you should not edit any of the automatically-generated files in e.g. `.ci_support`, `.scripts`, or `.github/workflows/conda-build.yml`.
+
+4. (optional) If you want to enable uploads of the packages to [anaconda.org](https://anaconda.org) whenever the CI is run from a commit on the branch specified in `conda-forge.yml`, you need to set an Anaconda Cloud API token to the `BINSTAR_TOKEN` environment variable. To generate a token, follow the instructions [here](https://docs.anaconda.com/anacondaorg/user-guide/tasks/work-with-accounts/#creating-access-tokens). To populate the `BINSTAR_TOKEN` environment variable for CI jobs, add the token as a secret by following, for example, the [Github docs](https://docs.github.com/en/actions/reference/encrypted-secrets).

.conda/conda-forge.yml

@@ -0,0 +1,34 @@
+# See https://conda-forge.org/docs/maintainer/conda_forge_yml.html for
+# documentation on possible keys and values.
+
+# uncomment to enable cross-compiled osx-arm64 builds
+build_platform:
+ linux_aarch64: linux_64
+ linux_ppc64le: linux_64
+ osx_arm64: osx_64
+clone_depth: 0
+conda_build:
+  pkg_format: '2'
+github_actions:
+  store_build_artifacts: true
+os_version:
+  linux_64: cos7
+provider:
+  linux: github_actions
+  osx: github_actions
+  win: github_actions
+  # uncomment to enable additional linux platforms
+  #linux_aarch64: github_actions
+  #linux_ppc64le: github_actions
+recipe_dir: .conda/recipe
+# skip unnecessary files since this is not a full-fledged conda-forge feedstock
+skip_render:
+  - README.md
+  - LICENSE.txt
+  - .gitattributes
+  - .gitignore
+  - build-locally.py
+  - LICENSE
+test: native_and_emulated
+# enable uploads to Anaconda Cloud from specified branches only
+upload_on_branch: main

.conda/recipe/bld.bat

@@ -0,0 +1,29 @@
+setlocal EnableDelayedExpansion
+@echo on
+
+:: Make a build folder and change to it
+cmake -E make_directory buildconda
+cd buildconda
+
+:: configure
+cmake -G "Ninja" ^
+    -DCMAKE_BUILD_TYPE:STRING=Release ^
+    -DCMAKE_INSTALL_PREFIX:PATH="%LIBRARY_PREFIX%" ^
+    -DCMAKE_PREFIX_PATH:PATH="%LIBRARY_PREFIX%" ^
+    -DGR_PYTHON_DIR:PATH="%SP_DIR%" ^
+    -DENABLE_DOXYGEN=OFF ^
+    -DENABLE_TESTING=ON ^
+    ..
+if errorlevel 1 exit 1
+
+:: build
+cmake --build . --config Release -- -j%CPU_COUNT%
+if errorlevel 1 exit 1
+
+:: install
+cmake --build . --config Release --target install
+if errorlevel 1 exit 1
+
+:: test
+ctest --build-config Release --output-on-failure --timeout 120 -j%CPU_COUNT%
+if errorlevel 1 exit 1

.conda/recipe/build.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+set -ex
+
+cmake -E make_directory buildconda
+cd buildconda
+
+cmake_config_args=(
+    -DCMAKE_BUILD_TYPE=Release
+    -DCMAKE_INSTALL_PREFIX=$PREFIX
+    -DLIB_SUFFIX=""
+    -DENABLE_DOXYGEN=OFF
+    -DENABLE_TESTING=ON
+)
+
+cmake ${CMAKE_ARGS} -G "Ninja" .. "${cmake_config_args[@]}"
+cmake --build . --config Release -- -j${CPU_COUNT}
+cmake --build . --config Release --target install
+
+if [[ "${CONDA_BUILD_CROSS_COMPILATION:-}" != "1" || "${CROSSCOMPILING_EMULATOR}" != "" ]]; then
+    ctest --build-config Release --output-on-failure --timeout 120 -j${CPU_COUNT}
+fi

.conda/recipe/conda_build_config.yaml

@@ -0,0 +1,16 @@
+channel_sources:
+  - conda-forge,ryanvolz
+# this is the channel and label where packages will be uploaded to if enabled
+# (see ../README.md)
+channel_targets:
+  - gnuradio main
+# override the conda-forge pin for gnuradio-core by uncommenting
+# and specifying a different version here
+#gnuradio_core:
+  #- "3.10.1"
+gnuradio_extra_pin:
+  # always leave one entry with the empty string
+  - ""
+  # add version strings here like to get builds for versions other than
+  # the conda-forge-wide default or version specified above for gnuradio_core
+  #- "3.9.5"

.conda/recipe/meta.yaml

@@ -0,0 +1,93 @@
+{% set oot_name = "ieee802_11" %}
+{% set name = "gnuradio-" + oot_name %}
+# Set package version from cleaned up git tags if possible,
+# otherwise fall back to date-based version.
+{% set tag_version = environ.get("GIT_DESCRIBE_TAG", "")|string|replace("-","_")|replace("v","")|replace("git","") %}
+{% set post_commit = environ.get("GIT_DESCRIBE_NUMBER", 0)|string %}
+{% set hash = environ.get("GIT_DESCRIBE_HASH", "local")|string %}
+{% set fallback_version = "0.0.0.{0}.dev+g{1}".format(datetime.datetime.now().strftime("%Y%m%d"), environ.get("GIT_FULL_HASH", "local")[:9]) %}
+{% set version = (tag_version if post_commit == "0" else "{0}.post{1}+{2}".format(tag_version, post_commit, hash)) if tag_version else fallback_version %}
+
+package:
+  name: {{ name|lower }}
+  version: {{ version }}
+
+source:
+  # use local path or git repository depending on if the build is local or done on CI
+  path: "../.."  # [not os.environ.get("CI")]
+  git_url: {{ environ.get('FEEDSTOCK_ROOT', "../..") }}  # [os.environ.get("CI")]
+
+build:
+  number: 0
+
+requirements:
+  build:
+    - {{ compiler("c") }}
+    - {{ compiler("cxx") }}
+    - cmake
+    - git
+    - ninja
+    - pkg-config
+    # cross-compilation requirements
+    - python                              # [build_platform != target_platform]
+    - cross-python_{{ target_platform }}  # [build_platform != target_platform]
+    - numpy                               # [build_platform != target_platform]
+    - pybind11                            # [build_platform != target_platform]
+
+  host:
+    - boost-cpp
+    - fmt
+    - gmp  # [linux]
+    # the following two entries are for generating builds against specific GR versions
+    - gnuradio-core  # [not gnuradio_extra_pin]
+    - gnuradio-core {{ gnuradio_extra_pin }}.*  # [gnuradio_extra_pin]
+    - pip  # [win]
+    - pybind11
+    - python
+    - numpy
+    - spdlog
+    - volk
+
+  run:
+    - gnuradio-foo
+    - numpy
+    - pyopengl
+    - python
+
+test:
+  commands:
+    # verify that (some) headers get installed
+    - test -f $PREFIX/include/{{ oot_name }}/api.h  # [not win]
+    - if not exist %PREFIX%\\Library\\include\\{{ oot_name }}\\api.h exit 1  # [win]
+
+    # verify that libraries get installed
+    - test -f $PREFIX/lib/lib{{ name }}${SHLIB_EXT}  # [not win]
+    - if not exist %PREFIX%\\Library\\bin\\{{ name }}.dll exit 1  # [win]
+    - if not exist %PREFIX%\\Library\\lib\\{{ name }}.lib exit 1  # [win]
+
+    # verify that (some) GRC blocks get installed
+    {% set blocks = ["chunks_to_symbols", "decode_mac", "ether_encap", "extract_csi", "frame_equalizer", "mac", "mapper", "parse_mac", "sync_long", "sync_short"] %}
+    {% for block in blocks %}
+    - test -f $PREFIX/share/gnuradio/grc/blocks/{{ oot_name }}_{{ block }}.block.yml  # [not win]
+    - if not exist %PREFIX%\\Library\\share\\gnuradio\\grc\\blocks\\{{ oot_name }}_{{ block }}.block.yml exit 1  # [win]
+    {% endfor %}
+
+  imports:
+    # verify that the python module imports
+    - {{ oot_name }}
+
+about:
+  home: https://github.com/bastibl/gr-ieee802-11
+  license: GPL-3.0-or-later
+  license_file: LICENSE
+  summary: IEEE 802.11 a/g/p Transceiver for GNU Radio
+  description: >
+    This an IEEE 802.11 a/g/p transceiver for GNU Radio that is fitted for
+    operation with Ettus N210s and B210s. Interoperability was tested with many
+    off-the-shelf WiFi cards and IEEE 802.11p prototypes. The code can also be
+    used in simulations.
+
+    Example gnuradio-companion flowgraphs are installed with the package and
+    can be found in:
+        - (Linux/macOS) `$CONDA_PREFIX/share/gr-ieee802_11/examples`
+        - (Windows) `%CONDA_PREFIX%\share\gr-ieee802_11\examples`

.gitattributes

@@ -0,0 +1,7 @@
+# In GNU Radio 3.9+, pybind11 compares hash values of headers and source
+# files against knowns values.  Conversion of values to CRLF on checkout
+# break those checks so keep LF values when files are subject to said checks
+#
+*.h    text eol=lf
+*.c    text eol=lf
+*.cc   text eol=lf

CMakeLists.txt

@@ -144,6 +144,7 @@ add_subdirectory(include/ieee802_11)
 add_subdirectory(lib)
 add_subdirectory(apps)
 add_subdirectory(docs)
+add_subdirectory(examples)
 # NOTE: manually update below to use GRC to generate C++ flowgraphs w/o python
 if(ENABLE_PYTHON)
   message(STATUS "PYTHON and GRC components are enabled")
@@ -160,3 +161,7 @@ endif(ENABLE_PYTHON)
 install(FILES cmake/Modules/ieee802_11Config.cmake
     DESTINATION ${CMAKE_MODULES_DIR}/ieee802_11
 )
+
+install(FILES MANIFEST.yml
+    RENAME MANIFEST-${VERSION_MAJOR}.${VERSION_API}.${VERSION_ABI}${VERSION_PATCH}.yml
+    DESTINATION share/gnuradio/manifests/ieee802_11)

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
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MANIFEST.yml

@@ -0,0 +1,23 @@
+title: The IEEE801_11 OOT Module
+version: 1.0
+brief: IEEE 802.11 a/g/p Transceiver
+tags: # Tags are arbitrary, but look at CGRAN what other authors are using
+  - IEEE 802.11
+  - WiFi
+  - OFDM
+author:
+  - Bastian Bloessl <bloessl@ccs-labs.org>
+copyright_owner:
+  - Bastian Bloessl
+license: GPL-3.0-or-later
+gr_supported_version:
+  - 3.7
+  - 3.8
+  - 3.9
+  - 3.10
+repo: https://github.com/bastibl/gr-ieee802-11.git
+website: http://www.ccs-labs.org/projects/wime/
+icon: http://www.ccs-labs.org/projects/wime/wime.png
+description: |-
+  This an IEEE 802.11 a/g/p transceiver for GNU Radio. Over the air, I tested it with the Ettus USRP N210 with XCVR2450 and CBX daughterboards. For interoperability tests I use mainly an Atheros (ath5k) WiFi card. The code can also be used for packet error rate simulations.
+file_format: 1

README.md

@@ -46,7 +46,7 @@ needed. For example the Wireshark connector. You can find these blocks at
 [https://github.com/bastibl/gr-foo](https://github.com/bastibl/gr-foo). They are
 installed with the typical command sequence:
 
-    git clone https://github.com/bastibl/gr-foo.git
+    git clone https://github.com/bastibl/gr-foo
     cd gr-foo
     mkdir build
     cd build
@@ -60,7 +60,7 @@ installed with the typical command sequence:
 
 To actually install the blocks do
 
-    git clone git://github.com/bastibl/gr-ieee802-11.git
+    git clone https://github.com/bastibl/gr-ieee802-11
     cd gr-ieee802-11
     mkdir build
     cd build
@@ -216,3 +216,5 @@ of the TUN/TAP interface is handled by the scripts in the ```apps``` folder.
 
 For further information please checkout our project page
 [https://www.wime-project.net](https://www.wime-project.net)
+
+For information and an implementation surrounding IEEE 802.11ah, please refer to [gr-ieee802-11ah](https://github.com/irongiant33/gr-ieee802-11ah).

examples/CMakeLists.txt

@@ -0,0 +1,14 @@
+# Copyright 2023 Ryan Volz
+#
+# This file is part of gr-ieee802_11
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+
+install(
+    FILES wifi_loopback.grc
+          wifi_phy_hier.grc
+          wifi_rx.grc
+          wifi_transceiver.grc
+          wifi_tx.grc
+    DESTINATION share/gnuradio/examples/ieee802_11)

examples/wifi_loopback.grc

@@ -23,6 +23,7 @@ options:
     sizing_mode: fixed
     thread_safe_setters: ''
     title: ''
+    window_size: (1000,1000)
   states:
     bus_sink: false
     bus_source: false
@@ -36,7 +37,7 @@ blocks:
   id: variable_qtgui_chooser
   parameters:
     comment: ''
-    gui_hint: 0,0,1,1
+    gui_hint: ''
     label: ''
     label0: ''
     label1: ''
@@ -45,13 +46,13 @@ blocks:
     label4: ''
     labels: '["LS", "LMS", "Linear Comb", "STA"]'
     num_opts: '0'
-    option0: ''
+    option0: '0'
-    option1: ''
+    option1: '1'
-    option2: ''
+    option2: '2'
-    option3: ''
+    option3: '3'
     option4: '4'
     options: '[0, 1, 2, 3]'
-    orient: Qt.QHBoxLayout
+    orient: Qt.QVBoxLayout
     type: int
     value: '0'
     widget: radio_buttons
@@ -59,7 +60,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [192, 8]
+    coordinate: [200, 12.0]
     rotation: 0
     state: enabled
 - name: encoding
@@ -271,23 +272,6 @@ blocks:
     coordinate: [728, 620.0]
     rotation: 0
     state: true
-- name: blocks_pdu_to_tagged_stream_0_0
-  id: blocks_pdu_to_tagged_stream
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    tag: packet_len
-    type: complex
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [376, 348.0]
-    rotation: 180
-    state: enabled
 - name: blocks_tag_debug_0
   id: blocks_tag_debug
   parameters:
@@ -433,6 +417,23 @@ blocks:
     coordinate: [328, 596.0]
     rotation: 180
     state: enabled
+- name: pdu_pdu_to_tagged_stream_0
+  id: pdu_pdu_to_tagged_stream
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    tag: packet_len
+    type: complex
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [384, 348.0]
+    rotation: 180
+    state: true
 - name: pfb_arb_resampler_xxx_0
   id: pfb_arb_resampler_xxx
   parameters:
@@ -668,7 +669,6 @@ connections:
 - [blocks_complex_to_mag_0, '0', blocks_vector_to_stream_0, '0']
 - [blocks_message_strobe_0, strobe, ieee802_11_mac_0, app in]
 - [blocks_multiply_const_xx_0, '0', channels_channel_model_0, '0']
-- [blocks_pdu_to_tagged_stream_0_0, '0', qtgui_const_sink_x_0, '0']
 - [blocks_vector_to_stream_0, '0', qtgui_time_sink_x_0, '0']
 - [channels_channel_model_0, '0', pfb_arb_resampler_xxx_0, '0']
 - [foo_packet_pad2_0, '0', blocks_multiply_const_xx_0, '0']
@@ -677,11 +677,13 @@ connections:
 - [ieee802_11_extract_csi_0, '0', blocks_tag_debug_0, '0']
 - [ieee802_11_mac_0, phy out, wifi_phy_hier_0, mac_in]
 - [ieee802_11_parse_mac_0, out, ieee802_11_extract_csi_0, pdu in]
+- [pdu_pdu_to_tagged_stream_0, '0', qtgui_const_sink_x_0, '0']
 - [pfb_arb_resampler_xxx_0, '0', wifi_phy_hier_0, '0']
 - [wifi_phy_hier_0, '0', foo_packet_pad2_0, '0']
-- [wifi_phy_hier_0, carrier, blocks_pdu_to_tagged_stream_0_0, pdus]
+- [wifi_phy_hier_0, carrier, pdu_pdu_to_tagged_stream_0, pdus]
 - [wifi_phy_hier_0, mac_out, foo_wireshark_connector_0, in]
 - [wifi_phy_hier_0, mac_out, ieee802_11_parse_mac_0, in]
 
 metadata:
   file_format: 1
+  grc_version: v3.10.2.0-68-g62a7e451

examples/wifi_rx.grc

@@ -23,6 +23,7 @@ options:
     sizing_mode: fixed
     thread_safe_setters: ''
     title: ''
+    window_size: (1000,1000)
   states:
     bus_sink: false
     bus_source: false
@@ -241,7 +242,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1016, 312]
+    coordinate: [896, 400.0]
     rotation: 0
     state: enabled
 - name: blocks_complex_to_mag_squared_0
@@ -272,7 +273,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [440, 328.0]
+    coordinate: [392, 456.0]
     rotation: 0
     state: enabled
 - name: blocks_delay_0
@@ -285,13 +286,14 @@ blocks:
     maxoutbuf: '0'
     minoutbuf: '0'
     num_ports: '1'
+    showports: 'False'
     type: complex
     vlen: '1'
   states:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [536, 540.0]
+    coordinate: [544, 768.0]
     rotation: 0
     state: enabled
 - name: blocks_delay_0_0
@@ -304,14 +306,15 @@ blocks:
     maxoutbuf: '0'
     minoutbuf: '0'
     num_ports: '1'
+    showports: 'False'
     type: complex
     vlen: '1'
   states:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [280, 312.0]
+    coordinate: [304.0, 344]
-    rotation: 0
+    rotation: 270
     state: enabled
 - name: blocks_divide_xx_0
   id: blocks_divide_xx
@@ -328,7 +331,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1168, 400]
+    coordinate: [1112.0, 384]
     rotation: 270
     state: enabled
 - name: blocks_file_sink_0
@@ -346,7 +349,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [768, 908]
+    coordinate: [1264, 920.0]
     rotation: 180
     state: disabled
 - name: blocks_moving_average_xx_0
@@ -366,7 +369,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [944, 180.0]
+    coordinate: [928, 176.0]
     rotation: 0
     state: enabled
 - name: blocks_moving_average_xx_1
@@ -386,8 +389,8 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [808, 284.0]
+    coordinate: [688.0, 336]
-    rotation: 0
+    rotation: 270
     state: enabled
 - name: blocks_multiply_xx_0
   id: blocks_multiply_xx
@@ -404,26 +407,9 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [664, 296]
+    coordinate: [616, 248.0]
     rotation: 0
     state: enabled
-- name: blocks_pdu_to_tagged_stream_1
-  id: blocks_pdu_to_tagged_stream
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    tag: packet_len
-    type: complex
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [584, 836]
-    rotation: 180
-    state: enabled
 - name: blocks_stream_to_vector_0
   id: blocks_stream_to_vector
   parameters:
@@ -439,7 +425,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [944, 528.0]
+    coordinate: [1040, 760.0]
     rotation: 0
     state: enabled
 - name: fft_vxx_0
@@ -460,7 +446,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [168, 672]
+    coordinate: [1248, 640.0]
     rotation: 0
     state: enabled
 - name: foo_wireshark_connector_0
@@ -477,7 +463,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [952, 916]
+    coordinate: [1504, 928.0]
     rotation: 180
     state: disabled
 - name: ieee802_11_decode_mac_0
@@ -494,7 +480,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [864, 676]
+    coordinate: [1728, 648.0]
     rotation: 0
     state: enabled
 - name: ieee802_11_frame_equalizer_0
@@ -514,7 +500,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [432, 672]
+    coordinate: [1480, 640.0]
     rotation: 0
     state: enabled
 - name: ieee802_11_parse_mac_0
@@ -531,7 +517,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [872, 796.0]
+    coordinate: [1744, 928.0]
     rotation: 180
     state: enabled
 - name: ieee802_11_sync_long_0
@@ -549,7 +535,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [744, 508.0]
+    coordinate: [800, 736.0]
     rotation: 0
     state: enabled
 - name: ieee802_11_sync_short_0
@@ -568,9 +554,26 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [304, 488.0]
+    coordinate: [440.0, 600]
-    rotation: 0
+    rotation: 270
     state: enabled
+- name: pdu_pdu_to_tagged_stream_0
+  id: pdu_pdu_to_tagged_stream
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    tag: packet_len
+    type: complex
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1472, 832.0]
+    rotation: 180
+    state: true
 - name: qtgui_const_sink_x_0
   id: qtgui_const_sink_x
   parameters:
@@ -660,7 +663,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [344, 828]
+    coordinate: [1224, 824.0]
     rotation: 180
     state: enabled
 - name: qtgui_time_sink_x_0
@@ -757,8 +760,8 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [1164, 520]
+    coordinate: [1048, 544.0]
-    rotation: 270
+    rotation: 180
     state: enabled
 - name: uhd_usrp_source_0
   id: uhd_usrp_source
@@ -1193,7 +1196,7 @@ blocks:
     bus_sink: false
     bus_source: false
     bus_structure: null
-    coordinate: [32, 216]
+    coordinate: [64, 216.0]
     rotation: 0
     state: enabled
 
@@ -1210,20 +1213,21 @@ connections:
 - [blocks_moving_average_xx_1, '0', blocks_complex_to_mag_0, '0']
 - [blocks_moving_average_xx_1, '0', ieee802_11_sync_short_0, '1']
 - [blocks_multiply_xx_0, '0', blocks_moving_average_xx_1, '0']
-- [blocks_pdu_to_tagged_stream_1, '0', qtgui_const_sink_x_0, '0']
 - [blocks_stream_to_vector_0, '0', fft_vxx_0, '0']
 - [fft_vxx_0, '0', ieee802_11_frame_equalizer_0, '0']
 - [foo_wireshark_connector_0, '0', blocks_file_sink_0, '0']
 - [ieee802_11_decode_mac_0, out, foo_wireshark_connector_0, in]
 - [ieee802_11_decode_mac_0, out, ieee802_11_parse_mac_0, in]
 - [ieee802_11_frame_equalizer_0, '0', ieee802_11_decode_mac_0, '0']
-- [ieee802_11_frame_equalizer_0, symbols, blocks_pdu_to_tagged_stream_1, pdus]
+- [ieee802_11_frame_equalizer_0, symbols, pdu_pdu_to_tagged_stream_0, pdus]
 - [ieee802_11_sync_long_0, '0', blocks_stream_to_vector_0, '0']
 - [ieee802_11_sync_short_0, '0', blocks_delay_0, '0']
 - [ieee802_11_sync_short_0, '0', ieee802_11_sync_long_0, '0']
+- [pdu_pdu_to_tagged_stream_0, '0', qtgui_const_sink_x_0, '0']
 - [uhd_usrp_source_0, '0', blocks_complex_to_mag_squared_0, '0']
 - [uhd_usrp_source_0, '0', blocks_delay_0_0, '0']
 - [uhd_usrp_source_0, '0', blocks_multiply_xx_0, '0']
 
 metadata:
   file_format: 1
+  grc_version: 3.10.12.0

examples/wifi_transceiver.grc

@@ -23,6 +23,7 @@ options:
     sizing_mode: fixed
     thread_safe_setters: ''
     title: ''
+    window_size: (1000,1000)
   states:
     bus_sink: false
     bus_source: false
@@ -292,41 +293,6 @@ blocks:
     coordinate: [476.0, 568]
     rotation: 270
     state: enabled
-- name: blocks_pdu_to_tagged_stream_0_0
-  id: blocks_pdu_to_tagged_stream
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    tag: packet_len
-    type: complex
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [124.0, 560]
-    rotation: 270
-    state: enabled
-- name: blocks_tuntap_pdu_0
-  id: blocks_tuntap_pdu
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    ifn: tap0
-    istunflag: 'False'
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    mtu: '440'
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [616, 157]
-    rotation: 180
-    state: disabled
 - name: foo_packet_pad2_0
   id: foo_packet_pad2
   parameters:
@@ -415,6 +381,41 @@ blocks:
     coordinate: [264, 340.0]
     rotation: 180
     state: enabled
+- name: network_tuntap_pdu_0
+  id: network_tuntap_pdu
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    ifn: tap0
+    istunflag: 'False'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    mtu: '440'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [616, 164.0]
+    rotation: 180
+    state: disabled
+- name: pdu_pdu_to_tagged_stream_0
+  id: pdu_pdu_to_tagged_stream
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    tag: packet_len
+    type: complex
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [124.0, 552]
+    rotation: 270
+    state: true
 - name: qtgui_const_sink_x_0
   id: qtgui_const_sink_x
   parameters:
@@ -1243,16 +1244,16 @@ blocks:
 
 connections:
 - [blocks_multiply_const_vxx_0, '0', foo_packet_pad2_0, '0']
-- [blocks_pdu_to_tagged_stream_0_0, '0', qtgui_const_sink_x_0, '0']
-- [blocks_tuntap_pdu_0, pdus, ieee802_11_ether_encap_0, from tap]
 - [foo_packet_pad2_0, '0', uhd_usrp_sink_0, '0']
 - [foo_wireshark_connector_0, '0', blocks_file_sink_0, '0']
-- [ieee802_11_ether_encap_0, to tap, blocks_tuntap_pdu_0, pdus]
+- [ieee802_11_ether_encap_0, to tap, network_tuntap_pdu_0, pdus]
 - [ieee802_11_ether_encap_0, to wifi, ieee802_11_mac_0, app in]
 - [ieee802_11_mac_0, phy out, wifi_phy_hier_0, mac_in]
+- [network_tuntap_pdu_0, pdus, ieee802_11_ether_encap_0, from tap]
+- [pdu_pdu_to_tagged_stream_0, '0', qtgui_const_sink_x_0, '0']
 - [uhd_usrp_source_0, '0', wifi_phy_hier_0, '0']
 - [wifi_phy_hier_0, '0', blocks_multiply_const_vxx_0, '0']
-- [wifi_phy_hier_0, carrier, blocks_pdu_to_tagged_stream_0_0, pdus]
+- [wifi_phy_hier_0, carrier, pdu_pdu_to_tagged_stream_0, pdus]
 - [wifi_phy_hier_0, mac_out, foo_wireshark_connector_0, in]
 - [wifi_phy_hier_0, mac_out, ieee802_11_ether_encap_0, from wifi]
 - [wifi_phy_hier_0, mac_out, ieee802_11_mac_0, phy in]
@@ -1260,3 +1261,4 @@ connections:
 
 metadata:
   file_format: 1
+  grc_version: v3.10.2.0-68-g62a7e451

examples/wifi_tx.grc

@@ -23,6 +23,7 @@ options:
     sizing_mode: fixed
     thread_safe_setters: ''
     title: ''
+    window_size: (1000,1000)
   states:
     bus_sink: false
     bus_source: false
@@ -294,26 +295,6 @@ blocks:
     coordinate: [240, 396.0]
     rotation: 180
     state: enabled
-- name: blocks_socket_pdu_0
-  id: blocks_socket_pdu
-  parameters:
-    affinity: ''
-    alias: ''
-    comment: ''
-    host: ''
-    maxoutbuf: '0'
-    minoutbuf: '0'
-    mtu: '10000'
-    port: '52001'
-    tcp_no_delay: 'False'
-    type: TCP_SERVER
-  states:
-    bus_sink: false
-    bus_source: false
-    bus_structure: null
-    coordinate: [232, 260.0]
-    rotation: 0
-    state: enabled
 - name: blocks_vector_source_x_0
   id: blocks_vector_source_x
   parameters:
@@ -372,6 +353,26 @@ blocks:
     coordinate: [440, 284]
     rotation: 0
     state: enabled
+- name: network_socket_pdu_0
+  id: network_socket_pdu
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    host: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    mtu: '10000'
+    port: '52001'
+    tcp_no_delay: 'False'
+    type: TCP_SERVER
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [216, 260.0]
+    rotation: 0
+    state: true
 - name: osmosdr_sink_0
   id: osmosdr_sink
   parameters:
@@ -934,12 +935,13 @@ blocks:
 connections:
 - [blocks_message_strobe_0_0, strobe, ieee802_11_mac_0, app in]
 - [blocks_multiply_const_vxx_0, '0', foo_packet_pad2_0, '0']
-- [blocks_socket_pdu_0, pdus, ieee802_11_mac_0, app in]
 - [blocks_vector_source_x_0, '0', wifi_phy_hier_0, '0']
 - [foo_packet_pad2_0, '0', osmosdr_sink_0, '0']
 - [foo_packet_pad2_0, '0', uhd_usrp_sink_0, '0']
 - [ieee802_11_mac_0, phy out, wifi_phy_hier_0, mac_in]
+- [network_socket_pdu_0, pdus, ieee802_11_mac_0, app in]
 - [wifi_phy_hier_0, '0', blocks_multiply_const_vxx_0, '0']
 
 metadata:
   file_format: 1
+  grc_version: v3.10.2.0-68-g62a7e451

grc/CMakeLists.txt

@@ -16,5 +16,6 @@ install(FILES
     ieee802_11_mapper.block.yml
     ieee802_11_parse_mac.block.yml
     ieee802_11_sync_long.block.yml
-    ieee802_11_sync_short.block.yml DESTINATION share/gnuradio/grc/blocks
+    ieee802_11_sync_short.block.yml
+    ieee802_11_append_crc32.block.yml DESTINATION share/gnuradio/grc/blocks
 )

grc/ieee802_11_append_crc32.block.yml

@@ -0,0 +1,26 @@
+id: ieee802_11_append_crc32
+label: Append CRC32
+category: '[IEEE802.11]'
+
+parameters:
+-   id: append
+    label: Append
+    dtype: bool
+    default: 'True'
+    options: ['True', 'False']
+    option_labels: [Enable, Disable]
+
+inputs:
+-   domain: message
+    id: in
+
+outputs:
+-   domain: message
+    id: out
+    optional: true
+
+templates:
+    imports: import ieee802_11
+    make: ieee802_11.append_crc32(${append})
+
+file_format: 1

include/ieee802_11/CMakeLists.txt

@@ -23,5 +23,5 @@ install(FILES
     signal_field.h
     sync_long.h
     sync_short.h
-    DESTINATION include/ieee802_11
+    append_crc32.h DESTINATION include/ieee802_11
 )

include/ieee802_11/append_crc32.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2025 Nicolas Guillaume <nicol@sguillau.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef INCLUDED_IEEE802_11_APPEND_CRC32_H
+#define INCLUDED_IEEE802_11_APPEND_CRC32_H
+
+#include <gnuradio/block.h>
+#include <ieee802_11/api.h>
+
+namespace gr {
+namespace ieee802_11 {
+
+class IEEE802_11_API append_crc32 : virtual public block
+{
+public:
+    typedef std::shared_ptr<append_crc32> sptr;
+    static sptr make(bool append = true);
+};
+
+}
+}
+
+#endif

include/ieee802_11/mapper.h

@@ -17,6 +17,7 @@
 #ifndef INCLUDED_IEEE802_11_MAPPER_H
 #define INCLUDED_IEEE802_11_MAPPER_H
 
+#include <cstdint>
 #include <gnuradio/block.h>
 #include <ieee802_11/api.h>
 
@@ -34,6 +35,11 @@ enum Encoding {
     QAM64_3_4 = 7,
 };
 
+// Required for fmt 10
+inline uint8_t format_as(Encoding e) {
+  return static_cast<uint8_t>(e);
+}
+
 class IEEE802_11_API mapper : virtual public block
 {
 public:

lib/CMakeLists.txt

@@ -33,13 +33,14 @@ list(APPEND ieee802_11_sources
     extract_csi_impl.cc
     frame_equalizer_impl.cc
     mac.cc
-    mapper.cc
+    mapper_impl.cc
     parse_mac.cc
     signal_field_impl.cc
     sync_long.cc
     sync_short.cc
     utils.cc
     viterbi_decoder/base.cc
+    append_crc32_impl.cc
 )
 
 # use SSE2 optimized viterbi implementation if SSE2 is enabled

lib/append_crc32_impl.cc

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2025 Nicolas Guillaume <nicol@sguillau.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "append_crc32_impl.h"
+
+#include <gnuradio/block_detail.h>
+#include <gnuradio/io_signature.h>
+
+#include <boost/bind/bind.hpp>
+#include <boost/crc.hpp>
+
+#include <cstdint>
+#include <cstring>
+#include <limits>
+#include <stdexcept>
+#include <vector>
+
+using namespace gr::ieee802_11;
+
+append_crc32::sptr append_crc32::make(bool append)
+{
+    return gnuradio::get_initial_sptr(new append_crc32_impl(append));
+}
+
+append_crc32_impl::append_crc32_impl(bool append)
+    : block("append_crc32",
+            gr::io_signature::make(0, 0, 0),
+            gr::io_signature::make(0, 0, 0)),
+      d_append(append)
+{
+    message_port_register_in(pmt::mp("in"));
+    set_msg_handler(pmt::mp("in"), boost::bind(&append_crc32_impl::handle, this, boost::placeholders::_1));
+    message_port_register_out(pmt::mp("out"));
+}
+
+void append_crc32_impl::handle(pmt::pmt_t msg)
+{
+    if(pmt::is_eof_object(msg))
+    {
+        detail().get()->set_done(true);
+        return;
+    }
+
+    if(!pmt::is_pair(msg))
+        throw std::invalid_argument("append_crc32 expects PDU pair");
+
+    pmt::pmt_t meta = pmt::car(msg);
+    pmt::pmt_t blob = pmt::cdr(msg);
+
+    if(!pmt::is_blob(blob))
+        throw std::invalid_argument("append_crc32 expects blob payload");
+
+    if(!d_append)
+    {
+        message_port_pub(pmt::mp("out"), pmt::cons(meta, blob));
+        return;
+    }
+
+    size_t len = pmt::blob_length(blob);
+    const uint8_t* data = reinterpret_cast<const uint8_t*>(pmt::blob_data(blob));
+
+    boost::crc_32_type result;
+    result.process_bytes(data, len);
+    uint32_t crc = result.checksum();
+
+    if(len > std::numeric_limits<size_t>::max() - sizeof(uint32_t))
+        throw std::length_error("append_crc32 payload too large");
+
+    std::vector<uint8_t> out(len + sizeof(uint32_t));
+    std::memcpy(out.data(), data, len);
+    std::memcpy(out.data() + len, &crc, sizeof(uint32_t));
+
+    pmt::pmt_t out_blob = pmt::make_blob(out.data(), out.size());
+    message_port_pub(pmt::mp("out"), pmt::cons(meta, out_blob));
+}

lib/append_crc32_impl.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2025 Nicolas Guillaume <nicol@sguillau.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef INCLUDED_IEEE802_11_APPEND_CRC32_IMPL_H
+#define INCLUDED_IEEE802_11_APPEND_CRC32_IMPL_H
+
+#include <ieee802_11/append_crc32.h>
+#include <pmt/pmt.h>
+
+namespace gr {
+namespace ieee802_11 {
+
+class append_crc32_impl : public append_crc32
+{
+public:
+    append_crc32_impl(bool append);
+
+private:
+    void handle(pmt::pmt_t msg);
+
+    bool d_append;
+};
+
+}
+}
+
+#endif

lib/decode_mac.cc

@@ -21,7 +21,6 @@
 
 #include <gnuradio/io_signature.h>
 #include <boost/crc.hpp>
-#include <boost/format.hpp> 
 #include <iomanip>
 
 using namespace gr::ieee802_11;
@@ -147,8 +146,10 @@ public:
             return;
         }
 
-        mylog(boost::format("encoding: %1% - length: %2% - symbols: %3%") %
+        mylog("encoding: {} - length: {} - symbols: {}",
-              d_ofdm.encoding % d_frame.psdu_size % d_frame.n_sym);
+              d_ofdm.encoding,
+              d_frame.psdu_size,
+              d_frame.n_sym);
 
         // create PDU
         pmt::pmt_t blob = pmt::make_blob(out_bytes + 2, d_frame.psdu_size - 4);
@@ -162,8 +163,8 @@ public:
     {
 
         int n_cbps = d_ofdm.n_cbps;
-        int first[n_cbps];
+        int first[MAX_BITS_PER_SYM];
-        int second[n_cbps];
+        int second[MAX_BITS_PER_SYM];
         int s = std::max(d_ofdm.n_bpsc / 2, 1);
 
         for (int j = 0; j < n_cbps; j++) {

lib/ether_encap_impl.cc

@@ -19,7 +19,9 @@
 
 #include <gnuradio/block_detail.h>
 #include <gnuradio/io_signature.h>
+#include <cstring>
 #include <string>
+#include <vector>
 
 using namespace gr::ieee802_11;
 
@@ -49,7 +51,12 @@ void ether_encap_impl::from_wifi(pmt::pmt_t msg)
 
     msg = pmt::cdr(msg);
 
-    int data_len = pmt::blob_length(msg);
+    const size_t data_len = pmt::blob_length(msg);
+    if (data_len < sizeof(mac_header)) {
+        dout << "Ether Encap: frame too short to parse" << std::endl;
+        return;
+    }
+
     const mac_header* mhdr = reinterpret_cast<const mac_header*>(pmt::blob_data(msg));
 
     if (d_last_seq == mhdr->seq_nr) {
@@ -59,48 +66,53 @@ void ether_encap_impl::from_wifi(pmt::pmt_t msg)
 
     d_last_seq = mhdr->seq_nr;
 
-
-    if (data_len < 33) {
-        dout << "Ether Encap: frame too short to parse (<33)" << std::endl;
-        return;
-    }
-
-    // this is more than needed
-    char* buf = static_cast<char*>(std::malloc(data_len + sizeof(ethernet_header)));
-    ethernet_header* ehdr = reinterpret_cast<ethernet_header*>(buf);
-
     if (((mhdr->frame_control >> 2) & 3) != 2) {
         dout << "this is not a data frame -- ignoring" << std::endl;
         return;
     }
 
-    std::memcpy(ehdr->dest, mhdr->addr1, 6);
+    size_t payload_offset;
-    std::memcpy(ehdr->src, mhdr->addr2, 6);
-    ehdr->type = 0x0008;
-
-    char* frame = (char*)pmt::blob_data(msg);
 
     // DATA
     if ((((mhdr->frame_control) >> 2) & 63) == 2) {
-        memcpy(buf + sizeof(ethernet_header), frame + 32, data_len - 32);
+        payload_offset = 32;
-        pmt::pmt_t payload = pmt::make_blob(buf, data_len - 32 + 14);
-        message_port_pub(pmt::mp("to tap"), pmt::cons(pmt::PMT_NIL, payload));
 
         // QoS Data
     } else if ((((mhdr->frame_control) >> 2) & 63) == 34) {
-
+        payload_offset = 34;
-        memcpy(buf + sizeof(ethernet_header), frame + 34, data_len - 34);
+    } else {
-        pmt::pmt_t payload = pmt::make_blob(buf, data_len - 34 + 14);
+        return;
-        message_port_pub(pmt::mp("to tap"), pmt::cons(pmt::PMT_NIL, payload));
     }
 
-    free(buf);
+    if (data_len < payload_offset) {
+        dout << "Ether Encap: data frame too short to decapsulate" << std::endl;
+        return;
+    }
+
+    const char* frame = static_cast<const char*>(pmt::blob_data(msg));
+    const size_t copy_len = data_len - payload_offset;
+    std::vector<char> buf(sizeof(ethernet_header) + copy_len);
+    ethernet_header* ehdr = reinterpret_cast<ethernet_header*>(buf.data());
+
+    std::memcpy(ehdr->dest, mhdr->addr1, 6);
+    std::memcpy(ehdr->src, mhdr->addr2, 6);
+    ehdr->type = 0x0008;
+    std::memcpy(buf.data() + sizeof(ethernet_header), frame + payload_offset, copy_len);
+
+    pmt::pmt_t payload = pmt::make_blob(buf.data(), buf.size());
+    message_port_pub(pmt::mp("to tap"), pmt::cons(pmt::PMT_NIL, payload));
 }
 
 void ether_encap_impl::from_tap(pmt::pmt_t msg)
 {
-    size_t len = pmt::blob_length(pmt::cdr(msg));
+    pmt::pmt_t blob = pmt::cdr(msg);
-    const char* data = static_cast<const char*>(pmt::blob_data(pmt::cdr(msg)));
+    size_t len = pmt::blob_length(blob);
+    const char* data = static_cast<const char*>(pmt::blob_data(blob));
+
+    if (len < sizeof(ethernet_header)) {
+        dout << "Ether Encap: Ethernet frame too short to parse" << std::endl;
+        return;
+    }
 
     const ethernet_header* ehdr = reinterpret_cast<const ethernet_header*>(data);
 
@@ -108,7 +120,8 @@ void ether_encap_impl::from_tap(pmt::pmt_t msg)
     case 0x0008: {
         std::cout << "ether type: IP" << std::endl;
 
-        char* buf = static_cast<char*>(malloc(len + 8 - sizeof(ethernet_header)));
+        const size_t payload_len = len - sizeof(ethernet_header);
+        std::vector<char> buf(8 + payload_len);
         buf[0] = 0xaa;
         buf[1] = 0xaa;
         buf[2] = 0x03;
@@ -117,10 +130,9 @@ void ether_encap_impl::from_tap(pmt::pmt_t msg)
         buf[5] = 0x00;
         buf[6] = 0x08;
         buf[7] = 0x00;
-        std::memcpy(
+        std::memcpy(buf.data() + 8, data + sizeof(ethernet_header), payload_len);
-            buf + 8, data + sizeof(ethernet_header), len - sizeof(ethernet_header));
+        pmt::pmt_t out_blob = pmt::make_blob(buf.data(), buf.size());
-        pmt::pmt_t blob = pmt::make_blob(buf, len + 8 - sizeof(ethernet_header));
+        message_port_pub(pmt::mp("to wifi"), pmt::cons(pmt::PMT_NIL, out_blob));
-        message_port_pub(pmt::mp("to wifi"), pmt::cons(pmt::PMT_NIL, blob));
         break;
     }
     case 0x0608:

lib/ether_encap_impl.h

@@ -22,11 +22,13 @@
 namespace gr {
 namespace ieee802_11 {
 
+#pragma pack(push, 1)
 struct ethernet_header {
     uint8_t dest[6];
     uint8_t src[6];
     uint16_t type;
-} __attribute__((packed));
+};
+#pragma pack(pop)
 
 class ether_encap_impl : public ether_encap
 {

lib/frame_equalizer_impl.cc

@@ -23,7 +23,6 @@
 #include "frame_equalizer_impl.h"
 #include "utils.h"
 #include <gnuradio/io_signature.h>
-#include <boost/format.hpp> 
 
 namespace gr {
 namespace ieee802_11 {
@@ -360,8 +359,10 @@ bool frame_equalizer_impl::parse_signal(uint8_t* decoded_bits)
         return false;
     }
 
-    mylog(boost::format("encoding: %1% - length: %2% - symbols: %3%") % d_frame_encoding %
+    mylog("encoding: {} - length: {} - symbols: {}",
-          d_frame_bytes % d_frame_symbols);
+          d_frame_encoding,
+          d_frame_bytes,
+          d_frame_symbols);
     return true;
 }
 

lib/mac.cc

@@ -24,6 +24,8 @@
 #if defined(__APPLE__)
 #include <architecture/byte_order.h>
 #define htole16(x) OSSwapHostToLittleInt16(x)
+#elif defined(_WIN32)
+#define htole16(x) (x)
 #else
 #include <endian.h>
 #endif

lib/parse_mac.cc

@@ -21,7 +21,6 @@
 #include <gnuradio/io_signature.h>
 #include <string>
 #include <iomanip>
-#include <boost/format.hpp> 
 
 using namespace gr::ieee802_11;
 
@@ -64,7 +63,7 @@ public:
         int frame_len = pmt::blob_length(d_msg);
         mac_header* h = (mac_header*)pmt::blob_data(d_msg);
 
-        mylog(boost::format("length: %1%") % frame_len);
+        mylog("length: {}",frame_len);
 
         dout << std::endl << "new mac frame  (length " << frame_len << ")" << std::endl;
         dout << "=========================================" << std::endl;
@@ -110,10 +109,14 @@ public:
 
         // DATA
         if ((((h->frame_control) >> 2) & 63) == 2) {
-            print_ascii(frame + 24, frame_len - 24);
+            if (frame_len >= 24) {
+                print_ascii(frame + 24, frame_len - 24);
+            }
             // QoS Data
         } else if ((((h->frame_control) >> 2) & 63) == 34) {
-            print_ascii(frame + 26, frame_len - 26);
+            if (frame_len >= 26) {
+                print_ascii(frame + 26, frame_len - 26);
+            }
         }
 
         message_port_pub(pmt::mp("out"), pmt::cons(d_meta, d_msg));

lib/sync_long.cc

@@ -23,7 +23,6 @@
 
 #include <list>
 #include <tuple>
-#include <boost/format.hpp> 
 
 using namespace gr::ieee802_11;
 using namespace std;
@@ -113,7 +112,7 @@ public:
 
                 if (d_offset == SYNC_LENGTH) {
                     search_frame_start();
-                    mylog(boost::format("LONG: frame start at %1%") % d_frame_start);
+                    mylog("LONG: frame start at {}",d_frame_start);
                     d_offset = 0;
                     d_count = 0;
                     d_state = COPY;

lib/sync_short.cc

@@ -19,7 +19,6 @@
 #include <ieee802_11/sync_short.h>
 
 #include <iostream>
-#include <boost/format.hpp> 
 
 using namespace gr::ieee802_11;
 
@@ -139,7 +138,7 @@ public:
 
     void insert_tag(uint64_t item, double freq_offset, uint64_t input_item)
     {
-        mylog(boost::format("frame start at in: %2% out: %1%") % item % input_item);
+        mylog("frame start at in: {} out: {}", item, input_item);
 
         const pmt::pmt_t key = pmt::string_to_symbol("wifi_start");
         const pmt::pmt_t value = pmt::from_double(freq_offset);

lib/utils.cc

@@ -89,7 +89,7 @@ ofdm_param::ofdm_param(Encoding e)
         n_dbps = 216;
         rate_field = 0x03; // 0b00000011
         break;
-    defaut:
+    default:
         assert(false);
         break;
     }
@@ -211,7 +211,7 @@ void puncturing(const char* in, char* out, frame_param& frame, ofdm_param& ofdm)
                 out++;
             }
             break;
-        defaut:
+        default:
             assert(false);
             break;
         }
@@ -224,8 +224,8 @@ void interleave(
 {
 
     int n_cbps = ofdm.n_cbps;
-    int first[n_cbps];
+    int first[MAX_BITS_PER_SYM];
-    int second[n_cbps];
+    int second[MAX_BITS_PER_SYM];
     int s = std::max(ofdm.n_bpsc / 2, 1);
 
     for (int j = 0; j < n_cbps; j++) {

lib/utils.h

@@ -28,16 +28,18 @@ using gr::ieee802_11::Encoding;
 #define MAX_PAYLOAD_SIZE 1500
 #define MAX_PSDU_SIZE (MAX_PAYLOAD_SIZE + 28) // MAC, CRC
 #define MAX_SYM (((16 + 8 * MAX_PSDU_SIZE + 6) / 24) + 1)
-#define MAX_ENCODED_BITS ((16 + 8 * MAX_PSDU_SIZE + 6) * 2 + 288)
+#define MAX_BITS_PER_SYM 288
+#define MAX_ENCODED_BITS ((16 + 8 * MAX_PSDU_SIZE + 6) * 2 + MAX_BITS_PER_SYM)
 
 #define dout d_debug&& std::cout
-#define mylog(msg)                      \
+#define mylog(...)                      \
     do {                                \
         if (d_log) {                    \
-            GR_LOG_INFO(d_logger, msg); \
+            d_logger->info(__VA_ARGS__); \
         }                               \
     } while (0);
 
+#pragma pack(push, 1)
 struct mac_header {
     // protocol version, type, subtype, to_ds, from_ds, ...
     uint16_t frame_control;
@@ -46,7 +48,8 @@ struct mac_header {
     uint8_t addr2[6];
     uint8_t addr3[6];
     uint16_t seq_nr;
-} __attribute__((packed));
+};
+#pragma pack(pop)
 
 /**
  * WIFI parameters

lib/viterbi_decoder/base.h

@@ -41,9 +41,9 @@ protected:
     // Position in circular buffer where the current decoded byte is stored
     int d_store_pos;
     // Metrics for each state
-    unsigned char d_mmresult[64] __attribute__((aligned(16)));
+    alignas(16) unsigned char d_mmresult[64];
     // Paths for each state
-    unsigned char d_ppresult[TRACEBACK_MAX][64] __attribute__((aligned(16)));
+    alignas(16) unsigned char d_ppresult[TRACEBACK_MAX][64];
 
     int d_ntraceback;
     int d_k;

lib/viterbi_decoder/viterbi_decoder_generic.cc

@@ -414,7 +414,7 @@ void viterbi_decoder::viterbi_chunks_init_generic()
 {
     int i, j;
 
-    for (i = 0; i < 4; i++) {
+    for (i = 0; i < 64; i++) {
         d_metric0_generic[i] = 0;
         d_path0_generic[i] = 0;
     }

lib/viterbi_decoder/viterbi_decoder_generic.h

@@ -37,10 +37,10 @@ private:
         unsigned char c[32];
     } d_branchtab27_generic[2];
 
-    unsigned char d_metric0_generic[64] __attribute__((aligned(16)));
+    alignas(16) unsigned char d_metric0_generic[64];
-    unsigned char d_metric1_generic[64] __attribute__((aligned(16)));
+    alignas(16) unsigned char d_metric1_generic[64];
-    unsigned char d_path0_generic[64] __attribute__((aligned(16)));
+    alignas(16) unsigned char d_path0_generic[64];
-    unsigned char d_path1_generic[64] __attribute__((aligned(16)));
+    alignas(16) unsigned char d_path1_generic[64];
 
     void reset();
 

lib/viterbi_decoder/viterbi_decoder_x86.h

@@ -39,10 +39,10 @@ private:
         __m128i v[2];
     } d_branchtab27_sse2[2];
 
-    __m128i d_metric0[4] __attribute__((aligned(16)));
+    alignas(16) __m128i d_metric0[4];
-    __m128i d_metric1[4] __attribute__((aligned(16)));
+    alignas(16) __m128i d_metric1[4];
-    __m128i d_path0[4] __attribute__((aligned(16)));
+    alignas(16) __m128i d_path0[4];
-    __m128i d_path1[4] __attribute__((aligned(16)));
+    alignas(16) __m128i d_path1[4];
 
     virtual void reset();
 

python/bindings/CMakeLists.txt

@@ -41,7 +41,7 @@ list(APPEND ieee802_11_python_files
     signal_field_python.cc
     sync_long_python.cc
     sync_short_python.cc
-    python_bindings.cc)
+    append_crc32_python.cc python_bindings.cc)
 
 GR_PYBIND_MAKE_OOT(ieee802_11 
    ../..

python/bindings/append_crc32_python.cc

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2026 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+/***********************************************************************************/
+/* This file is automatically generated using bindtool and can be manually edited  */
+/* The following lines can be configured to regenerate this file during cmake      */
+/* If manual edits are made, the following tags should be modified accordingly.    */
+/* BINDTOOL_GEN_AUTOMATIC(1)                                                       */
+/* BINDTOOL_USE_PYGCCXML(0)                                                        */
+/* BINDTOOL_HEADER_FILE(append_crc32.h)                                        */
+/* BINDTOOL_HEADER_FILE_HASH(cf84ad555605be942f0589bb5b9b5737)                     */
+/***********************************************************************************/
+
+#include <pybind11/complex.h>
+#include <pybind11/pybind11.h>
+#include <pybind11/stl.h>
+
+namespace py = pybind11;
+
+#include <ieee802_11/append_crc32.h>
+// pydoc.h is automatically generated in the build directory
+#include <append_crc32_pydoc.h>
+
+void bind_append_crc32(py::module& m)
+{
+
+    using append_crc32 = ::gr::ieee802_11::append_crc32;
+
+
+    py::class_<append_crc32, gr::block, gr::basic_block, std::shared_ptr<append_crc32>>(
+        m, "append_crc32", D(append_crc32))
+
+        .def(py::init(&append_crc32::make),
+             py::arg("append") = true,
+             D(append_crc32, make))
+
+
+        ;
+}

python/bindings/bind_oot_file.py

@@ -37,7 +37,7 @@ args = parser.parse_args()
 
 prefix = args.prefix
 output_dir = args.output_dir
-defines = tuple(','.join(args.defines).split(','))
+defines = tuple([d for d in ','.join(args.defines).split(',') if d])
 includes = ','.join(args.include)
 name = args.module
 

python/bindings/docstrings/append_crc32_pydoc_template.h

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2026 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+#include "pydoc_macros.h"
+#define D(...) DOC(gr, ieee802_11, __VA_ARGS__)
+/*
+  This file contains placeholders for docstrings for the Python bindings.
+  Do not edit! These were automatically extracted during the binding process
+  and will be overwritten during the build process
+ */
+
+
+static const char* __doc_gr_ieee802_11_append_crc32 = R"doc()doc";
+
+
+static const char* __doc_gr_ieee802_11_append_crc32_append_crc32_0 = R"doc()doc";
+
+
+static const char* __doc_gr_ieee802_11_append_crc32_make = R"doc()doc";

python/bindings/mapper_python.cc

@@ -14,7 +14,7 @@
 /* BINDTOOL_GEN_AUTOMATIC(0)                                                       */
 /* BINDTOOL_USE_PYGCCXML(0)                                                        */
 /* BINDTOOL_HEADER_FILE(mapper.h)                                        */
-/* BINDTOOL_HEADER_FILE_HASH(58c66a6e35e1e775b96dcb8f7b38b293)                     */
+/* BINDTOOL_HEADER_FILE_HASH(71fee88c2602a7b34f8996a1ff163569)                     */
 /***********************************************************************************/
 
 #include <pybind11/complex.h>

python/bindings/python_bindings.cc

@@ -33,6 +33,7 @@ void bind_parse_mac(py::module& m);
 void bind_signal_field(py::module& m);
 void bind_sync_long(py::module& m);
 void bind_sync_short(py::module& m);
+void bind_append_crc32(py::module& m);
 // ) END BINDING_FUNCTION_PROTOTYPES
 
 
@@ -74,5 +75,6 @@ PYBIND11_MODULE(ieee802_11_python, m)
     bind_signal_field(m);
     bind_sync_long(m);
     bind_sync_short(m);
+    bind_append_crc32(m);
     // ) END BINDING_FUNCTION_CALLS
 }