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