Unify common BNXT and MLX5 initialization code (#233)

Co-authored-by: Aurelien Bouteiller <aurelien.bouteiller@amd.com>

[ROCm/rocshmem commit: cb39f7a]

Author: Yiltan

projects/rocshmem/CMakeLists.txt

@@ -70,7 +70,8 @@ option(BUILD_LOCAL_GPU_TARGET_ONLY "Build only for GPUs detected on this machine
 option(BUILD_CODE_COVERAGE "Build with code coverage flags (gcc only)" OFF)
 
 option(GDA_IONIC "Build for AMD Pensando IONIC RDMA provider" OFF)
-option(GDA_BNXT "Build for Broadcom" OFF)
+option(GDA_BNXT "Build for Broadcom RDMA provider" OFF)
+option(GDA_MLX5 "Build for Mellanox MLX5 RDMA provider" OFF)
 
 ###############################################################################
 # PROJECT

projects/rocshmem/cmake/rocshmem_config.h.in

@@ -44,3 +44,4 @@
 #cmakedefine USE_HDP_FLUSH_HOST_SIDE
 #cmakedefine GDA_IONIC
 #cmakedefine GDA_BNXT
+#cmakedefine GDA_MLX5

projects/rocshmem/scripts/build_configs/gda_mlx5

@@ -27,4 +27,4 @@ set -e
 
 script_path=$(dirname "$(realpath $0)")
 
-exec $script_path/gda $*
+source $script_path/gda -DGDA_MLX5=ON $*

projects/rocshmem/src/gda/CMakeLists.txt

@@ -47,9 +47,10 @@ target_link_libraries(
     numa
 )
 
-if (GDA_IONIC)
-elseif (GDA_BNXT)
+if (GDA_BNXT)
   add_subdirectory(bnxt)
-else()
+endif()
+
+if (GDA_MLX5)
   target_sources(${PROJECT_NAME} PRIVATE segment_builder.cpp)
 endif()