1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
3
sigalrm_handler(int s)4 static void sigalrm_handler(int s) {}
5 static struct sigaction sigalrm_action = {
6 .sa_handler = sigalrm_handler,
7 };
8
test_signal_pending_by_type(enum bpf_prog_type prog_type)9 static void test_signal_pending_by_type(enum bpf_prog_type prog_type)
10 {
11 struct bpf_insn prog[4096];
12 struct itimerval timeo = {
13 .it_value.tv_usec = 100000, /* 100ms */
14 };
15 __u32 duration = 0, retval;
16 int prog_fd;
17 int err;
18 int i;
19
20 for (i = 0; i < ARRAY_SIZE(prog); i++)
21 prog[i] = BPF_ALU64_IMM(BPF_MOV, BPF_REG_0, 0);
22 prog[ARRAY_SIZE(prog) - 1] = BPF_EXIT_INSN();
23
24 prog_fd = bpf_load_program(prog_type, prog, ARRAY_SIZE(prog),
25 "GPL", 0, NULL, 0);
26 CHECK(prog_fd < 0, "test-run", "errno %d\n", errno);
27
28 err = sigaction(SIGALRM, &sigalrm_action, NULL);
29 CHECK(err, "test-run-signal-sigaction", "errno %d\n", errno);
30
31 err = setitimer(ITIMER_REAL, &timeo, NULL);
32 CHECK(err, "test-run-signal-timer", "errno %d\n", errno);
33
34 err = bpf_prog_test_run(prog_fd, 0xffffffff, &pkt_v4, sizeof(pkt_v4),
35 NULL, NULL, &retval, &duration);
36 CHECK(duration > 500000000, /* 500ms */
37 "test-run-signal-duration",
38 "duration %dns > 500ms\n",
39 duration);
40
41 signal(SIGALRM, SIG_DFL);
42 }
43
test_signal_pending(enum bpf_prog_type prog_type)44 void test_signal_pending(enum bpf_prog_type prog_type)
45 {
46 test_signal_pending_by_type(BPF_PROG_TYPE_SOCKET_FILTER);
47 test_signal_pending_by_type(BPF_PROG_TYPE_FLOW_DISSECTOR);
48 }
49
