1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019 Facebook */ 3 4 #include <test_progs.h> 5 6 struct s { 7 int a; 8 long long b; 9 } __attribute__((packed)); 10 11 #include "test_skeleton.skel.h" 12 13 void test_skeleton(void) 14 { 15 int duration = 0, err; 16 struct test_skeleton* skel; 17 struct test_skeleton__bss *bss; 18 struct test_skeleton__data *data; 19 struct test_skeleton__rodata *rodata; 20 struct test_skeleton__kconfig *kcfg; 21 22 skel = test_skeleton__open(); 23 if (CHECK(!skel, "skel_open", "failed to open skeleton\n")) 24 return; 25 26 if (CHECK(skel->kconfig, "skel_kconfig", "kconfig is mmaped()!\n")) 27 goto cleanup; 28 29 bss = skel->bss; 30 data = skel->data; 31 rodata = skel->rodata; 32 33 /* validate values are pre-initialized correctly */ 34 CHECK(data->in1 != -1, "in1", "got %d != exp %d\n", data->in1, -1); 35 CHECK(data->out1 != -1, "out1", "got %d != exp %d\n", data->out1, -1); 36 CHECK(data->in2 != -1, "in2", "got %lld != exp %lld\n", data->in2, -1LL); 37 CHECK(data->out2 != -1, "out2", "got %lld != exp %lld\n", data->out2, -1LL); 38 39 CHECK(bss->in3 != 0, "in3", "got %d != exp %d\n", bss->in3, 0); 40 CHECK(bss->out3 != 0, "out3", "got %d != exp %d\n", bss->out3, 0); 41 CHECK(bss->in4 != 0, "in4", "got %lld != exp %lld\n", bss->in4, 0LL); 42 CHECK(bss->out4 != 0, "out4", "got %lld != exp %lld\n", bss->out4, 0LL); 43 44 CHECK(rodata->in.in6 != 0, "in6", "got %d != exp %d\n", rodata->in.in6, 0); 45 CHECK(bss->out6 != 0, "out6", "got %d != exp %d\n", bss->out6, 0); 46 47 /* validate we can pre-setup global variables, even in .bss */ 48 data->in1 = 10; 49 data->in2 = 11; 50 bss->in3 = 12; 51 bss->in4 = 13; 52 rodata->in.in6 = 14; 53 54 err = test_skeleton__load(skel); 55 if (CHECK(err, "skel_load", "failed to load skeleton: %d\n", err)) 56 goto cleanup; 57 58 /* validate pre-setup values are still there */ 59 CHECK(data->in1 != 10, "in1", "got %d != exp %d\n", data->in1, 10); 60 CHECK(data->in2 != 11, "in2", "got %lld != exp %lld\n", data->in2, 11LL); 61 CHECK(bss->in3 != 12, "in3", "got %d != exp %d\n", bss->in3, 12); 62 CHECK(bss->in4 != 13, "in4", "got %lld != exp %lld\n", bss->in4, 13LL); 63 CHECK(rodata->in.in6 != 14, "in6", "got %d != exp %d\n", rodata->in.in6, 14); 64 65 /* now set new values and attach to get them into outX variables */ 66 data->in1 = 1; 67 data->in2 = 2; 68 bss->in3 = 3; 69 bss->in4 = 4; 70 bss->in5.a = 5; 71 bss->in5.b = 6; 72 kcfg = skel->kconfig; 73 74 err = test_skeleton__attach(skel); 75 if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err)) 76 goto cleanup; 77 78 /* trigger tracepoint */ 79 usleep(1); 80 81 CHECK(data->out1 != 1, "res1", "got %d != exp %d\n", data->out1, 1); 82 CHECK(data->out2 != 2, "res2", "got %lld != exp %d\n", data->out2, 2); 83 CHECK(bss->out3 != 3, "res3", "got %d != exp %d\n", (int)bss->out3, 3); 84 CHECK(bss->out4 != 4, "res4", "got %lld != exp %d\n", bss->out4, 4); 85 CHECK(bss->out5.a != 5, "res5", "got %d != exp %d\n", bss->out5.a, 5); 86 CHECK(bss->out5.b != 6, "res6", "got %lld != exp %d\n", bss->out5.b, 6); 87 CHECK(bss->out6 != 14, "res7", "got %d != exp %d\n", bss->out6, 14); 88 89 CHECK(bss->bpf_syscall != kcfg->CONFIG_BPF_SYSCALL, "ext1", 90 "got %d != exp %d\n", bss->bpf_syscall, kcfg->CONFIG_BPF_SYSCALL); 91 CHECK(bss->kern_ver != kcfg->LINUX_KERNEL_VERSION, "ext2", 92 "got %d != exp %d\n", bss->kern_ver, kcfg->LINUX_KERNEL_VERSION); 93 94 cleanup: 95 test_skeleton__destroy(skel); 96 } 97