BPF适配不同的编译环境

CMakeLists.txt

@@ -92,6 +92,4 @@ add_subdirectory(plugin)
 add_subdirectory(platform)
 add_subdirectory(cache)
 add_subdirectory(script)
-if (SUPPORT_BPF)
+add_subdirectory(bpf)
-	add_subdirectory(bpf)
-endif()

bpf/CMakeLists.txt

@@ -1 +1,7 @@
-execute_process(COMMAND make WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/bpf/)
+add_library(bpf_obj bpf_obj.cpp)
+target_include_directories(bpf_obj PUBLIC ${CMAKE_CURRENT_LIST_DIR})
+if (SUPPORT_BPF)
+    target_link_libraries(bpf_obj PUBLIC bpf)
+    execute_process(COMMAND make WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/bpf/)
+	install(FILES ./bpf_tun_rss_steering.o DESTINATION ${CMAKE_INSTALL_PREFIX}/resource/bpf/ COMPONENT PROFILE)
+endif()

bpf/bpf_obj.cpp

@@ -1,9 +1,12 @@
 #include <errno.h>
+#include <stdio.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <sys/ioctl.h>
 #include <linux/if_tun.h>
 
+#ifdef SUPPORT_BPF
 #include "bpf_config_user.h"
 
 #define MIN(a, b) ((a) > (b) ? (b) : (a))
@@ -95,3 +98,28 @@ int bpf_obj_attach(struct bpf_obj_ctx *ctx, int fd)
         return -1;
     }
 }
+#else
+
+struct bpf_obj_ctx
+{
+};
+
+#include <sys/types.h>
+
+void bpf_obj_unload(struct bpf_obj_ctx *ctx)
+{
+    printf("ERROR: BPF feature not support on current system\n");
+}
+
+struct bpf_obj_ctx *bpf_obj_load(const char *obj_file, uint32_t queue_num, uint32_t hash_mode, uint32_t debug_log)
+{
+    printf("ERROR: BPF feature not support on current system\n");
+    return NULL;
+}
+
+int bpf_obj_attach(struct bpf_obj_ctx *ctx, int fd)
+{
+    printf("ERROR: BPF feature not support on current system\n");
+    return -1;
+}
+#endif

common/CMakeLists.txt

@@ -7,10 +7,6 @@ target_include_directories(common PUBLIC ${CMAKE_CURRENT_LIST_DIR}/include)
 target_link_libraries(common PUBLIC libevent-static libevent-static-openssl libevent-static-pthreads rdkafka)
 target_link_libraries(common PUBLIC MESA_handle_logger cjson)
 
-if (SUPPORT_BPF)
-    target_link_libraries(common PUBLIC bpf)
-endif()
-
 if (SUPPORT_LIBURING)
     target_link_libraries(common PUBLIC uring)
 endif()