1 // SPDX-License-Identifier: GPL-2.0 2 #include <test_progs.h> 3 #include <network_helpers.h> 4 5 #include "test_pkt_access.skel.h" 6 7 static const __u32 duration; 8 9 static void check_run_cnt(int prog_fd, __u64 run_cnt) 10 { 11 struct bpf_prog_info info = {}; 12 __u32 info_len = sizeof(info); 13 int err; 14 15 err = bpf_prog_get_info_by_fd(prog_fd, &info, &info_len); 16 if (CHECK(err, "get_prog_info", "failed to get bpf_prog_info for fd %d\n", prog_fd)) 17 return; 18 19 CHECK(run_cnt != info.run_cnt, "run_cnt", 20 "incorrect number of repetitions, want %llu have %llu\n", run_cnt, info.run_cnt); 21 } 22 23 void test_prog_run_opts(void) 24 { 25 struct test_pkt_access *skel; 26 int err, stats_fd = -1, prog_fd; 27 char buf[10] = {}; 28 __u64 run_cnt = 0; 29 30 LIBBPF_OPTS(bpf_test_run_opts, topts, 31 .repeat = 1, 32 .data_in = &pkt_v4, 33 .data_size_in = sizeof(pkt_v4), 34 .data_out = buf, 35 .data_size_out = 5, 36 ); 37 38 stats_fd = bpf_enable_stats(BPF_STATS_RUN_TIME); 39 if (!ASSERT_GE(stats_fd, 0, "enable_stats good fd")) 40 return; 41 42 skel = test_pkt_access__open_and_load(); 43 if (!ASSERT_OK_PTR(skel, "open_and_load")) 44 goto cleanup; 45 46 prog_fd = bpf_program__fd(skel->progs.test_pkt_access); 47 48 err = bpf_prog_test_run_opts(prog_fd, &topts); 49 ASSERT_EQ(errno, ENOSPC, "test_run errno"); 50 ASSERT_ERR(err, "test_run"); 51 ASSERT_OK(topts.retval, "test_run retval"); 52 53 ASSERT_EQ(topts.data_size_out, sizeof(pkt_v4), "test_run data_size_out"); 54 ASSERT_EQ(buf[5], 0, "overflow, BPF_PROG_TEST_RUN ignored size hint"); 55 56 run_cnt += topts.repeat; 57 check_run_cnt(prog_fd, run_cnt); 58 59 topts.data_out = NULL; 60 topts.data_size_out = 0; 61 topts.repeat = 2; 62 errno = 0; 63 64 err = bpf_prog_test_run_opts(prog_fd, &topts); 65 ASSERT_OK(errno, "run_no_output errno"); 66 ASSERT_OK(err, "run_no_output err"); 67 ASSERT_OK(topts.retval, "run_no_output retval"); 68 69 run_cnt += topts.repeat; 70 check_run_cnt(prog_fd, run_cnt); 71 72 cleanup: 73 if (skel) 74 test_pkt_access__destroy(skel); 75 if (stats_fd >= 0) 76 close(stats_fd); 77 } 78