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// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
#include <linux/nbd.h>
void test_raw_tp_writable_test_run(void)
{
__u32 duration = 0;
char error[4096];
const struct bpf_insn trace_program[] = {
BPF_LDX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_6, 0),
BPF_MOV64_IMM(BPF_REG_0, 42),
BPF_STX_MEM(BPF_W, BPF_REG_6, BPF_REG_0, 0),
BPF_EXIT_INSN(),
};
struct bpf_load_program_attr load_attr = {
.prog_type = BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE,
.license = "GPL v2",
.insns = trace_program,
.insns_cnt = sizeof(trace_program) / sizeof(struct bpf_insn),
.log_level = 2,
};
int bpf_fd = bpf_load_program_xattr(&load_attr, error, sizeof(error));
if (CHECK(bpf_fd < 0, "bpf_raw_tracepoint_writable loaded",
"failed: %d errno %d\n", bpf_fd, errno))
return;
const struct bpf_insn skb_program[] = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
};
struct bpf_load_program_attr skb_load_attr = {
.prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
.license = "GPL v2",
.insns = skb_program,
.insns_cnt = sizeof(skb_program) / sizeof(struct bpf_insn),
};
int filter_fd =
bpf_load_program_xattr(&skb_load_attr, error, sizeof(error));
if (CHECK(filter_fd < 0, "test_program_loaded", "failed: %d errno %d\n",
filter_fd, errno))
goto out_bpffd;
int tp_fd = bpf_raw_tracepoint_open("bpf_test_finish", bpf_fd);
if (CHECK(tp_fd < 0, "bpf_raw_tracepoint_writable opened",
"failed: %d errno %d\n", tp_fd, errno))
goto out_filterfd;
char test_skb[128] = {
0,
};
__u32 prog_ret;
int err = bpf_prog_test_run(filter_fd, 1, test_skb, sizeof(test_skb), 0,
0, &prog_ret, 0);
CHECK(err != 42, "test_run",
"tracepoint did not modify return value\n");
CHECK(prog_ret != 0, "test_run_ret",
"socket_filter did not return 0\n");
close(tp_fd);
err = bpf_prog_test_run(filter_fd, 1, test_skb, sizeof(test_skb), 0, 0,
&prog_ret, 0);
CHECK(err != 0, "test_run_notrace",
"test_run failed with %d errno %d\n", err, errno);
CHECK(prog_ret != 0, "test_run_ret_notrace",
"socket_filter did not return 0\n");
out_filterfd:
close(filter_fd);
out_bpffd:
close(bpf_fd);
}
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