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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2022 Facebook */
#include <test_progs.h>
#include <network_helpers.h>
#include "dynptr_fail.skel.h"
#include "dynptr_success.skel.h"
enum test_setup_type {
SETUP_SYSCALL_SLEEP,
SETUP_SKB_PROG,
SETUP_SKB_PROG_TP,
SETUP_XDP_PROG,
};
static struct {
const char *prog_name;
enum test_setup_type type;
} success_tests[] = {
{"test_read_write", SETUP_SYSCALL_SLEEP},
{"test_dynptr_data", SETUP_SYSCALL_SLEEP},
{"test_dynptr_copy", SETUP_SYSCALL_SLEEP},
{"test_dynptr_copy_xdp", SETUP_XDP_PROG},
{"test_ringbuf", SETUP_SYSCALL_SLEEP},
{"test_skb_readonly", SETUP_SKB_PROG},
{"test_dynptr_skb_data", SETUP_SKB_PROG},
{"test_adjust", SETUP_SYSCALL_SLEEP},
{"test_adjust_err", SETUP_SYSCALL_SLEEP},
{"test_zero_size_dynptr", SETUP_SYSCALL_SLEEP},
{"test_dynptr_is_null", SETUP_SYSCALL_SLEEP},
{"test_dynptr_is_rdonly", SETUP_SKB_PROG},
{"test_dynptr_clone", SETUP_SKB_PROG},
{"test_dynptr_skb_no_buff", SETUP_SKB_PROG},
{"test_dynptr_skb_strcmp", SETUP_SKB_PROG},
{"test_dynptr_skb_tp_btf", SETUP_SKB_PROG_TP},
{"test_probe_read_user_dynptr", SETUP_XDP_PROG},
{"test_probe_read_kernel_dynptr", SETUP_XDP_PROG},
{"test_probe_read_user_str_dynptr", SETUP_XDP_PROG},
{"test_probe_read_kernel_str_dynptr", SETUP_XDP_PROG},
{"test_copy_from_user_dynptr", SETUP_SYSCALL_SLEEP},
{"test_copy_from_user_str_dynptr", SETUP_SYSCALL_SLEEP},
{"test_copy_from_user_task_dynptr", SETUP_SYSCALL_SLEEP},
{"test_copy_from_user_task_str_dynptr", SETUP_SYSCALL_SLEEP},
};
static void verify_success(const char *prog_name, enum test_setup_type setup_type)
{
char user_data[384] = {[0 ... 382] = 'a', '\0'};
struct dynptr_success *skel;
struct bpf_program *prog;
struct bpf_link *link;
int err;
skel = dynptr_success__open();
if (!ASSERT_OK_PTR(skel, "dynptr_success__open"))
return;
skel->bss->pid = getpid();
prog = bpf_object__find_program_by_name(skel->obj, prog_name);
if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
goto cleanup;
bpf_program__set_autoload(prog, true);
err = dynptr_success__load(skel);
if (!ASSERT_OK(err, "dynptr_success__load"))
goto cleanup;
skel->bss->user_ptr = user_data;
skel->data->test_len[0] = sizeof(user_data);
memcpy(skel->bss->expected_str, user_data, sizeof(user_data));
switch (setup_type) {
case SETUP_SYSCALL_SLEEP:
link = bpf_program__attach(prog);
if (!ASSERT_OK_PTR(link, "bpf_program__attach"))
goto cleanup;
usleep(1);
bpf_link__destroy(link);
break;
case SETUP_SKB_PROG:
{
int prog_fd;
char buf[64];
LIBBPF_OPTS(bpf_test_run_opts, topts,
.data_in = &pkt_v4,
.data_size_in = sizeof(pkt_v4),
.data_out = buf,
.data_size_out = sizeof(buf),
.repeat = 1,
);
prog_fd = bpf_program__fd(prog);
if (!ASSERT_GE(prog_fd, 0, "prog_fd"))
goto cleanup;
err = bpf_prog_test_run_opts(prog_fd, &topts);
if (!ASSERT_OK(err, "test_run"))
goto cleanup;
break;
}
case SETUP_SKB_PROG_TP:
{
struct __sk_buff skb = {};
struct bpf_object *obj;
int aux_prog_fd;
/* Just use its test_run to trigger kfree_skb tracepoint */
err = bpf_prog_test_load("./test_pkt_access.bpf.o", BPF_PROG_TYPE_SCHED_CLS,
&obj, &aux_prog_fd);
if (!ASSERT_OK(err, "prog_load sched cls"))
goto cleanup;
LIBBPF_OPTS(bpf_test_run_opts, topts,
.data_in = &pkt_v4,
.data_size_in = sizeof(pkt_v4),
.ctx_in = &skb,
.ctx_size_in = sizeof(skb),
);
link = bpf_program__attach(prog);
if (!ASSERT_OK_PTR(link, "bpf_program__attach"))
goto cleanup;
err = bpf_prog_test_run_opts(aux_prog_fd, &topts);
bpf_link__destroy(link);
if (!ASSERT_OK(err, "test_run"))
goto cleanup;
break;
}
case SETUP_XDP_PROG:
{
char data[5000];
int err, prog_fd;
LIBBPF_OPTS(bpf_test_run_opts, opts,
.data_in = &data,
.data_size_in = sizeof(data),
.repeat = 1,
);
prog_fd = bpf_program__fd(prog);
err = bpf_prog_test_run_opts(prog_fd, &opts);
if (!ASSERT_OK(err, "test_run"))
goto cleanup;
break;
}
}
ASSERT_EQ(skel->bss->err, 0, "err");
cleanup:
dynptr_success__destroy(skel);
}
void test_dynptr(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(success_tests); i++) {
if (!test__start_subtest(success_tests[i].prog_name))
continue;
verify_success(success_tests[i].prog_name, success_tests[i].type);
}
RUN_TESTS(dynptr_fail);
}
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