diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/skeleton.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/skeleton.c | 58 |
1 files changed, 51 insertions, 7 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/skeleton.c b/tools/testing/selftests/bpf/prog_tests/skeleton.c index fa153cf67b1b..bc6817aee9aa 100644 --- a/tools/testing/selftests/bpf/prog_tests/skeleton.c +++ b/tools/testing/selftests/bpf/prog_tests/skeleton.c @@ -2,6 +2,7 @@ /* Copyright (c) 2019 Facebook */ #include <test_progs.h> +#include <sys/mman.h> struct s { int a; @@ -16,8 +17,14 @@ void test_skeleton(void) 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; + void *m; + int i, fd; skel = test_skeleton__open(); if (CHECK(!skel, "skel_open", "failed to open skeleton\n")) @@ -28,7 +35,12 @@ void test_skeleton(void) 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); @@ -41,15 +53,25 @@ void test_skeleton(void) 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->in6 != 0, "in6", "got %d != exp %d\n", rodata->in6, 0); + 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->in6 = 14; + 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)) @@ -60,7 +82,11 @@ void test_skeleton(void) 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->in6 != 14, "in6", "got %d != exp %d\n", rodata->in6, 14); + 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; @@ -71,6 +97,8 @@ void test_skeleton(void) 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; @@ -82,10 +110,8 @@ void test_skeleton(void) 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->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", @@ -93,6 +119,24 @@ void test_skeleton(void) 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"); + + fd = bpf_map__fd(skel->maps.data_non_mmapable); + m = mmap(NULL, getpagesize(), PROT_READ, MAP_SHARED, fd, 0); + if (!ASSERT_EQ(m, MAP_FAILED, "unexpected_mmap_success")) + munmap(m, getpagesize()); + + ASSERT_EQ(bpf_map__map_flags(skel->maps.data_non_mmapable), 0, "non_mmap_flags"); + + 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); } |