1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
3 #include <network_helpers.h>
4 
5 static void sigalrm_handler(int s) {}
6 static struct sigaction sigalrm_action = {
7 	.sa_handler = sigalrm_handler,
8 };
9 
10 static void test_signal_pending_by_type(enum bpf_prog_type prog_type)
11 {
12 	struct bpf_insn prog[4096];
13 	struct itimerval timeo = {
14 		.it_value.tv_usec = 100000, /* 100ms */
15 	};
16 	int prog_fd;
17 	int err;
18 	int i;
19 	LIBBPF_OPTS(bpf_test_run_opts, topts,
20 		.data_in = &pkt_v4,
21 		.data_size_in = sizeof(pkt_v4),
22 		.repeat = 0xffffffff,
23 	);
24 
25 	for (i = 0; i < ARRAY_SIZE(prog); i++)
26 		prog[i] = BPF_ALU64_IMM(BPF_MOV, BPF_REG_0, 0);
27 	prog[ARRAY_SIZE(prog) - 1] = BPF_EXIT_INSN();
28 
29 	prog_fd = bpf_test_load_program(prog_type, prog, ARRAY_SIZE(prog),
30 				   "GPL", 0, NULL, 0);
31 	ASSERT_GE(prog_fd, 0, "test-run load");
32 
33 	err = sigaction(SIGALRM, &sigalrm_action, NULL);
34 	ASSERT_OK(err, "test-run-signal-sigaction");
35 
36 	err = setitimer(ITIMER_REAL, &timeo, NULL);
37 	ASSERT_OK(err, "test-run-signal-timer");
38 
39 	err = bpf_prog_test_run_opts(prog_fd, &topts);
40 	ASSERT_LE(topts.duration, 500000000 /* 500ms */,
41 		  "test-run-signal-duration");
42 
43 	signal(SIGALRM, SIG_DFL);
44 }
45 
46 void test_signal_pending(void)
47 {
48 	test_signal_pending_by_type(BPF_PROG_TYPE_SOCKET_FILTER);
49 	test_signal_pending_by_type(BPF_PROG_TYPE_FLOW_DISSECTOR);
50 }
51