| // 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__data_dyn *data_dyn; |
| struct test_skeleton__rodata *rodata; |
| struct test_skeleton__rodata_dyn *rodata_dyn; |
| struct test_skeleton__kconfig *kcfg; |
| const void *elf_bytes; |
| size_t elf_bytes_sz = 0; |
| int i; |
| |
| 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; |
| data_dyn = skel->data_dyn; |
| rodata = skel->rodata; |
| rodata_dyn = skel->rodata_dyn; |
| |
| ASSERT_STREQ(bpf_map__name(skel->maps.rodata_dyn), ".rodata.dyn", "rodata_dyn_name"); |
| ASSERT_STREQ(bpf_map__name(skel->maps.data_dyn), ".data.dyn", "data_dyn_name"); |
| |
| /* 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); |
| |
| ASSERT_EQ(rodata_dyn->in_dynarr_sz, 0, "in_dynarr_sz"); |
| for (i = 0; i < 4; i++) |
| ASSERT_EQ(rodata_dyn->in_dynarr[i], -(i + 1), "in_dynarr"); |
| for (i = 0; i < 4; i++) |
| ASSERT_EQ(data_dyn->out_dynarr[i], i + 1, "out_dynarr"); |
| |
| /* 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; |
| |
| rodata_dyn->in_dynarr_sz = 4; |
| for (i = 0; i < 4; i++) |
| rodata_dyn->in_dynarr[i] = i + 10; |
| |
| 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); |
| |
| ASSERT_EQ(rodata_dyn->in_dynarr_sz, 4, "in_dynarr_sz"); |
| for (i = 0; i < 4; i++) |
| ASSERT_EQ(rodata_dyn->in_dynarr[i], i + 10, "in_dynarr"); |
| |
| /* 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; |
| |
| skel->data_read_mostly->read_mostly_var = 123; |
| |
| 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->out5.a != 5, "res5", "got %d != exp %d\n", bss->out5.a, 5); |
| CHECK(bss->out5.b != 6, "res6", "got %lld != exp %d\n", bss->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); |
| |
| for (i = 0; i < 4; i++) |
| ASSERT_EQ(data_dyn->out_dynarr[i], i + 10, "out_dynarr"); |
| |
| ASSERT_EQ(skel->bss->out_mostly_var, 123, "out_mostly_var"); |
| |
| ASSERT_EQ(bss->huge_arr[ARRAY_SIZE(bss->huge_arr) - 1], 123, "huge_arr"); |
| |
| elf_bytes = test_skeleton__elf_bytes(&elf_bytes_sz); |
| ASSERT_OK_PTR(elf_bytes, "elf_bytes"); |
| ASSERT_GE(elf_bytes_sz, 0, "elf_bytes_sz"); |
| |
| cleanup: |
| test_skeleton__destroy(skel); |
| } |