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Diffstat (limited to 'tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c')
-rw-r--r--tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c140
1 files changed, 0 insertions, 140 deletions
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
deleted file mode 100644
index df3b292a8ffe..000000000000
--- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
+++ /dev/null
@@ -1,140 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* Copyright (c) 2020 Facebook */
-#include <linux/btf.h>
-#include <linux/btf_ids.h>
-#include <linux/error-injection.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/percpu-defs.h>
-#include <linux/sysfs.h>
-#include <linux/tracepoint.h>
-#include "bpf_testmod.h"
-
-#define CREATE_TRACE_POINTS
-#include "bpf_testmod-events.h"
-
-DEFINE_PER_CPU(int, bpf_testmod_ksym_percpu) = 123;
-
-noinline void
-bpf_testmod_test_mod_kfunc(int i)
-{
- *(int *)this_cpu_ptr(&bpf_testmod_ksym_percpu) = i;
-}
-
-noinline int bpf_testmod_loop_test(int n)
-{
- int i, sum = 0;
-
- /* the primary goal of this test is to test LBR. Create a lot of
- * branches in the function, so we can catch it easily.
- */
- for (i = 0; i < n; i++)
- sum += i;
- return sum;
-}
-
-__weak noinline struct file *bpf_testmod_return_ptr(int arg)
-{
- static struct file f = {};
-
- switch (arg) {
- case 1: return (void *)EINVAL; /* user addr */
- case 2: return (void *)0xcafe4a11; /* user addr */
- case 3: return (void *)-EINVAL; /* canonical, but invalid */
- case 4: return (void *)(1ull << 60); /* non-canonical and invalid */
- case 5: return (void *)~(1ull << 30); /* trigger extable */
- case 6: return &f; /* valid addr */
- case 7: return (void *)((long)&f | 1); /* kernel tricks */
- default: return NULL;
- }
-}
-
-noinline ssize_t
-bpf_testmod_test_read(struct file *file, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t off, size_t len)
-{
- struct bpf_testmod_test_read_ctx ctx = {
- .buf = buf,
- .off = off,
- .len = len,
- };
- int i = 1;
-
- while (bpf_testmod_return_ptr(i))
- i++;
-
- /* This is always true. Use the check to make sure the compiler
- * doesn't remove bpf_testmod_loop_test.
- */
- if (bpf_testmod_loop_test(101) > 100)
- trace_bpf_testmod_test_read(current, &ctx);
-
- /* Magic number to enable writable tp */
- if (len == 64) {
- struct bpf_testmod_test_writable_ctx writable = {
- .val = 1024,
- };
- trace_bpf_testmod_test_writable_bare(&writable);
- if (writable.early_ret)
- return snprintf(buf, len, "%d\n", writable.val);
- }
-
- return -EIO; /* always fail */
-}
-EXPORT_SYMBOL(bpf_testmod_test_read);
-ALLOW_ERROR_INJECTION(bpf_testmod_test_read, ERRNO);
-
-noinline ssize_t
-bpf_testmod_test_write(struct file *file, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t off, size_t len)
-{
- struct bpf_testmod_test_write_ctx ctx = {
- .buf = buf,
- .off = off,
- .len = len,
- };
-
- trace_bpf_testmod_test_write_bare(current, &ctx);
-
- return -EIO; /* always fail */
-}
-EXPORT_SYMBOL(bpf_testmod_test_write);
-ALLOW_ERROR_INJECTION(bpf_testmod_test_write, ERRNO);
-
-static struct bin_attribute bin_attr_bpf_testmod_file __ro_after_init = {
- .attr = { .name = "bpf_testmod", .mode = 0666, },
- .read = bpf_testmod_test_read,
- .write = bpf_testmod_test_write,
-};
-
-BTF_SET_START(bpf_testmod_kfunc_ids)
-BTF_ID(func, bpf_testmod_test_mod_kfunc)
-BTF_SET_END(bpf_testmod_kfunc_ids)
-
-static DEFINE_KFUNC_BTF_ID_SET(&bpf_testmod_kfunc_ids, bpf_testmod_kfunc_btf_set);
-
-static int bpf_testmod_init(void)
-{
- int ret;
-
- ret = sysfs_create_bin_file(kernel_kobj, &bin_attr_bpf_testmod_file);
- if (ret)
- return ret;
- register_kfunc_btf_id_set(&prog_test_kfunc_list, &bpf_testmod_kfunc_btf_set);
- return 0;
-}
-
-static void bpf_testmod_exit(void)
-{
- unregister_kfunc_btf_id_set(&prog_test_kfunc_list, &bpf_testmod_kfunc_btf_set);
- return sysfs_remove_bin_file(kernel_kobj, &bin_attr_bpf_testmod_file);
-}
-
-module_init(bpf_testmod_init);
-module_exit(bpf_testmod_exit);
-
-MODULE_AUTHOR("Andrii Nakryiko");
-MODULE_DESCRIPTION("BPF selftests module");
-MODULE_LICENSE("Dual BSD/GPL");