Fix: remove rdma support (#1334)

The RDMA support will not be maintained supported the library has
a specific purpose, and RDMA is not expected to be used. This was added as
an experimental feature, so supporting this is not needed anymore.

The performance of this experimental feature was poor.
The idea of sending buffers as small as MTU via RDMA was not the brightest one.

Author: DawidWesierski4

.github/workflows/coverity.yml

@@ -38,7 +38,7 @@ jobs:
             libnuma-dev libjson-c-dev libpcap-dev libgtest-dev libsdl2-dev \
             libsdl2-ttf-dev libssl-dev ca-certificates m4 clang llvm zlib1g-dev \
             libelf-dev libcap-ng-dev libcap2-bin gcc-multilib systemtap-sdt-dev ninja-build \
-            nasm librdmacm-dev wget unzip && \
+            nasm wget unzip && \
         sudo apt-get clean && \
         sudo rm -rf /var/lib/apt/lists/*
 

ATTRIBUTION.md

@@ -32,8 +32,6 @@
 | Libbpf                          | [Libbpf](https://github.com/libbpf/libbpf)                                   | LGPL-2.1 OR BSD-2-Clause                      |
 | Libxdp                          | [Libxdp](https://github.com/xdp-project/xdp-tools/tree/master)               | LGPL-2.1 OR BSD-2-Clause                      |
 | Gstreamer                       | [GStreamer](https://github.com/GStreamer/gstreamer)                          | LGPL v2.1                                     |
-| libibverbs                      | [libibverbs](https://github.com/linux-rdma/rdma-core/blob/master/libibverbs) | GPLv2                                         |
-| librdmacm                       | [librdmacm](https://github.com/linux-rdma/rdma-core/tree/master/librdmacm)   | GPLv2                                         |
 | level-zero                      | [Level Zero](https://github.com/oneapi-src/level-zero)                       | MIT                                           |
 | level-zero-dev                  | [Level Zero Dev](https://github.com/oneapi-src/level-zero)                   | MIT                                           |
 | xpu-smi                         | [XPU SMI](https://github.com/intel/xpumanager)                               | MIT                                           |

app/meson.build

@@ -513,46 +513,6 @@ executable('V4l2toIPApp', v4l2_to_ip_sources,
 )
 endif
 
-mtl_rdma = dependency('mtl_rdma', required: false)
-if mtl_rdma.found()
-executable('RdmaTxSample', rdma_tx_sample_sources,
-  c_args : app_c_args,
-  link_args: app_ld_args,
-  # asan should be always the first dep
-  dependencies: [asan_dep, libpthread, mtl_rdma]
-)
-executable('RdmaRxSample', rdma_rx_sample_sources,
-  c_args : app_c_args,
-  link_args: app_ld_args,
-  # asan should be always the first dep
-  dependencies: [asan_dep, libpthread, mtl_rdma]
-)
-executable('RdmaVideoTxSample', rdma_video_tx_sample_sources,
-  c_args : app_c_args,
-  link_args: app_ld_args,
-  # asan should be always the first dep
-  dependencies: [asan_dep, libpthread, mtl_rdma]
-)
-executable('RdmaVideoRxSample', rdma_video_rx_sample_sources,
-  c_args : app_c_args,
-  link_args: app_ld_args,
-  # asan should be always the first dep
-  dependencies: [asan_dep, libpthread, mtl_rdma, libsdl2]
-)
-executable('RdmaVideoTxMultiSample', rdma_video_tx_multi_sample_sources,
-  c_args : app_c_args,
-  link_args: app_ld_args,
-  # asan should be always the first dep
-  dependencies: [asan_dep, libpthread, mtl_rdma]
-)
-executable('RdmaVideoRxMultiSample', rdma_video_rx_multi_sample_sources,
-  c_args : app_c_args,
-  link_args: app_ld_args,
-  # asan should be always the first dep
-  dependencies: [asan_dep, libpthread, mtl_rdma, libsdl2]
-)
-endif
-
 if gpu_direct.found()
   executable('GpuDirectVideoTxMultiSample', gpu_direct_tx_sample_sources,
     c_args : app_c_args,

app/sample/README.md

@@ -227,41 +227,3 @@ The runtime log summarizes the number of metadata entries and UDW bytes received
 ```bash
 ./build/app/RxSt20pDynExtFrameSample --p_port 0000:af:01.1 --p_sip 192.168.75.22 --p_rx_ip 239.168.75.20
 ```
-
-## 9. RDMA sample
-
-[rdma_tx.c](rdma/rdma_tx.c): A tx application based on rdma interface.
-
-```bash
-./build/app/RdmaTxSample 192.168.75.10 20000
-```
-
-[rdma_rx.c](rdma/rdma_rx.c): A rx application based on rdma interface.
-
-```bash
-./build/app/RdmaRxSample 192.168.75.11 192.168.75.10 20000
-```
-
-[rdma_video_tx.c](rdma/rdma_video_tx.c): A tx video application based on rdma interface. The default video format is 1920x1080 UYVY frame, and the default video frame rate is 30.
-
-```bash
-./build/app/RdmaVideoTxSample 192.168.75.10 20000 test.yuv
-```
-
-[rdma_video_rx.c](rdma/rdma_video_rx.c): A rx video application based on rdma interface. SDL display is enabled by default.
-
-```bash
-./build/app/RdmaVideoRxSample 192.168.75.11 192.168.75.10 20000
-```
-
-[rdma_video_tx_multi.c](rdma/rdma_video_tx_multi.c): A tx video application based on rdma interface using multiple queue pair, just for experimental use. The default video format is 1920x1080 UYVY frame, and the default video frame rate is 30.
-
-```bash
-numactl -m 0 ./build/app/RdmaVideoTxMultiSample 192.168.75.10 20000 20001 test.yuv
-```
-
-[rdma_video_rx_multi.c](rdma/rdma_video_rx_multi.c): A rx video application based on rdma interface using multiple queue pair, just for experimental use. SDL display is enabled by default.
-
-```bash
-numactl -m 0 ./build/app/RdmaVideoRxMultiSample 192.168.75.11 192.168.75.10 20000 20001
-```

app/sample/meson.build

@@ -50,14 +50,6 @@ dma_sample_sources = files('dma/dma_sample.c', 'sample_util.c')
 redundant_rx_st20_combined_sample_sources = files('experimental/rx_st20_redundant_combined_sample.c',
     'sample_util.c')
 
-# rdma
-rdma_tx_sample_sources = files('rdma/rdma_tx.c')
-rdma_rx_sample_sources = files('rdma/rdma_rx.c')
-rdma_video_tx_sample_sources = files('rdma/rdma_video_tx.c')
-rdma_video_rx_sample_sources = files('rdma/rdma_video_rx.c')
-rdma_video_tx_multi_sample_sources = files('rdma/rdma_video_tx_multi.c')
-rdma_video_rx_multi_sample_sources = files('rdma/rdma_video_rx_multi.c')
-
 # gpu direct
 gpu_direct_tx_sample_sources = files('gpu_direct/tx_st20_pipeline_gpu_direct.c', 'sample_util.c')
 gpu_direct_rx_sample_sources = files('gpu_direct/rx_st20_pipeline_gpu_direct.c', 'sample_util.c')