1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) Meta Platforms, Inc. and affiliates. */ 3 4 #include <test_progs.h> 5 #include "test_subskeleton.skel.h" 6 #include "test_subskeleton_lib.subskel.h" 7 8 static void subskeleton_lib_setup(struct bpf_object *obj) 9 { 10 struct test_subskeleton_lib *lib = test_subskeleton_lib__open(obj); 11 12 if (!ASSERT_OK_PTR(lib, "open subskeleton")) 13 return; 14 15 *lib->rodata.var1 = 1; 16 *lib->data.var2 = 2; 17 lib->bss.var3->var3_1 = 3; 18 lib->bss.var3->var3_2 = 4; 19 20 test_subskeleton_lib__destroy(lib); 21 } 22 23 static int subskeleton_lib_subresult(struct bpf_object *obj) 24 { 25 struct test_subskeleton_lib *lib = test_subskeleton_lib__open(obj); 26 int result; 27 28 if (!ASSERT_OK_PTR(lib, "open subskeleton")) 29 return -EINVAL; 30 31 result = *lib->bss.libout1; 32 ASSERT_EQ(result, 1 + 2 + 3 + 4 + 5 + 6, "lib subresult"); 33 34 ASSERT_OK_PTR(lib->progs.lib_perf_handler, "lib_perf_handler"); 35 ASSERT_STREQ(bpf_program__name(lib->progs.lib_perf_handler), 36 "lib_perf_handler", "program name"); 37 38 ASSERT_OK_PTR(lib->maps.map1, "map1"); 39 ASSERT_STREQ(bpf_map__name(lib->maps.map1), "map1", "map name"); 40 41 ASSERT_EQ(*lib->data.var5, 5, "__weak var5"); 42 ASSERT_EQ(*lib->data.var6, 6, "extern var6"); 43 ASSERT_TRUE(*lib->kconfig.CONFIG_BPF_SYSCALL, "CONFIG_BPF_SYSCALL"); 44 45 test_subskeleton_lib__destroy(lib); 46 return result; 47 } 48 49 void test_subskeleton(void) 50 { 51 int err, result; 52 struct test_subskeleton *skel; 53 54 skel = test_subskeleton__open(); 55 if (!ASSERT_OK_PTR(skel, "skel_open")) 56 return; 57 58 skel->rodata->rovar1 = 10; 59 skel->rodata->var1 = 1; 60 subskeleton_lib_setup(skel->obj); 61 62 err = test_subskeleton__load(skel); 63 if (!ASSERT_OK(err, "skel_load")) 64 goto cleanup; 65 66 err = test_subskeleton__attach(skel); 67 if (!ASSERT_OK(err, "skel_attach")) 68 goto cleanup; 69 70 /* trigger tracepoint */ 71 usleep(1); 72 73 result = subskeleton_lib_subresult(skel->obj) * 10; 74 ASSERT_EQ(skel->bss->out1, result, "unexpected calculation"); 75 76 cleanup: 77 test_subskeleton__destroy(skel); 78 } 79