diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/skeleton.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/skeleton.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/skeleton.c b/tools/testing/selftests/bpf/prog_tests/skeleton.c new file mode 100644 index 000000000..fe87b77af --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/skeleton.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 Facebook */ + +#include <test_progs.h> + +struct s { + int a; + long long b; +} __attribute__((packed)); + +#include "test_skeleton.skel.h" + +void test_skeleton(void) +{ + int duration = 0, err; + struct test_skeleton* skel; + struct test_skeleton__bss *bss; + struct test_skeleton__data *data; + struct test_skeleton__rodata *rodata; + struct test_skeleton__kconfig *kcfg; + + skel = test_skeleton__open(); + if (CHECK(!skel, "skel_open", "failed to open skeleton\n")) + return; + + if (CHECK(skel->kconfig, "skel_kconfig", "kconfig is mmaped()!\n")) + goto cleanup; + + bss = skel->bss; + data = skel->data; + rodata = skel->rodata; + + /* validate values are pre-initialized correctly */ + CHECK(data->in1 != -1, "in1", "got %d != exp %d\n", data->in1, -1); + CHECK(data->out1 != -1, "out1", "got %d != exp %d\n", data->out1, -1); + CHECK(data->in2 != -1, "in2", "got %lld != exp %lld\n", data->in2, -1LL); + CHECK(data->out2 != -1, "out2", "got %lld != exp %lld\n", data->out2, -1LL); + + CHECK(bss->in3 != 0, "in3", "got %d != exp %d\n", bss->in3, 0); + CHECK(bss->out3 != 0, "out3", "got %d != exp %d\n", bss->out3, 0); + CHECK(bss->in4 != 0, "in4", "got %lld != exp %lld\n", bss->in4, 0LL); + CHECK(bss->out4 != 0, "out4", "got %lld != exp %lld\n", bss->out4, 0LL); + + CHECK(rodata->in.in6 != 0, "in6", "got %d != exp %d\n", rodata->in.in6, 0); + CHECK(bss->out6 != 0, "out6", "got %d != exp %d\n", bss->out6, 0); + + /* validate we can pre-setup global variables, even in .bss */ + data->in1 = 10; + data->in2 = 11; + bss->in3 = 12; + bss->in4 = 13; + rodata->in.in6 = 14; + + err = test_skeleton__load(skel); + if (CHECK(err, "skel_load", "failed to load skeleton: %d\n", err)) + goto cleanup; + + /* validate pre-setup values are still there */ + CHECK(data->in1 != 10, "in1", "got %d != exp %d\n", data->in1, 10); + CHECK(data->in2 != 11, "in2", "got %lld != exp %lld\n", data->in2, 11LL); + CHECK(bss->in3 != 12, "in3", "got %d != exp %d\n", bss->in3, 12); + CHECK(bss->in4 != 13, "in4", "got %lld != exp %lld\n", bss->in4, 13LL); + CHECK(rodata->in.in6 != 14, "in6", "got %d != exp %d\n", rodata->in.in6, 14); + + /* now set new values and attach to get them into outX variables */ + data->in1 = 1; + data->in2 = 2; + bss->in3 = 3; + bss->in4 = 4; + bss->in5.a = 5; + bss->in5.b = 6; + kcfg = skel->kconfig; + + err = test_skeleton__attach(skel); + if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err)) + goto cleanup; + + /* trigger tracepoint */ + usleep(1); + + CHECK(data->out1 != 1, "res1", "got %d != exp %d\n", data->out1, 1); + CHECK(data->out2 != 2, "res2", "got %lld != exp %d\n", data->out2, 2); + CHECK(bss->out3 != 3, "res3", "got %d != exp %d\n", (int)bss->out3, 3); + CHECK(bss->out4 != 4, "res4", "got %lld != exp %d\n", bss->out4, 4); + CHECK(bss->handler_out5.a != 5, "res5", "got %d != exp %d\n", + bss->handler_out5.a, 5); + CHECK(bss->handler_out5.b != 6, "res6", "got %lld != exp %d\n", + bss->handler_out5.b, 6); + CHECK(bss->out6 != 14, "res7", "got %d != exp %d\n", bss->out6, 14); + + CHECK(bss->bpf_syscall != kcfg->CONFIG_BPF_SYSCALL, "ext1", + "got %d != exp %d\n", bss->bpf_syscall, kcfg->CONFIG_BPF_SYSCALL); + CHECK(bss->kern_ver != kcfg->LINUX_KERNEL_VERSION, "ext2", + "got %d != exp %d\n", bss->kern_ver, kcfg->LINUX_KERNEL_VERSION); + +cleanup: + test_skeleton__destroy(skel); +} |