// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
#include <network_helpers.h>

#include "test_pkt_access.skel.h"

static const __u32 duration;

static void check_run_cnt(int prog_fd, __u64 run_cnt)
{
        struct bpf_prog_info info = {};
        __u32 info_len = sizeof(info);
        int err;

        err = bpf_prog_get_info_by_fd(prog_fd, &info, &info_len);
        if (CHECK(err, "get_prog_info", "failed to get bpf_prog_info for fd %d\n", prog_fd))
                return;

        CHECK(run_cnt != info.run_cnt, "run_cnt",
              "incorrect number of repetitions, want %llu have %llu\n", run_cnt, info.run_cnt);
}

void test_prog_run_opts(void)
{
        struct test_pkt_access *skel;
        int err, stats_fd = -1, prog_fd;
        char buf[10] = {};
        __u64 run_cnt = 0;

        LIBBPF_OPTS(bpf_test_run_opts, topts,
                .repeat = 1,
                .data_in = &pkt_v4,
                .data_size_in = sizeof(pkt_v4),
                .data_out = buf,
                .data_size_out = 5,
        );

        stats_fd = bpf_enable_stats(BPF_STATS_RUN_TIME);
        if (!ASSERT_GE(stats_fd, 0, "enable_stats good fd"))
                return;

        skel = test_pkt_access__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                goto cleanup;

        prog_fd = bpf_program__fd(skel->progs.test_pkt_access);

        err = bpf_prog_test_run_opts(prog_fd, &topts);
        ASSERT_EQ(errno, ENOSPC, "test_run errno");
        ASSERT_ERR(err, "test_run");
        ASSERT_OK(topts.retval, "test_run retval");

        ASSERT_EQ(topts.data_size_out, sizeof(pkt_v4), "test_run data_size_out");
        ASSERT_EQ(buf[5], 0, "overflow, BPF_PROG_TEST_RUN ignored size hint");

        run_cnt += topts.repeat;
        check_run_cnt(prog_fd, run_cnt);

        topts.data_out = NULL;
        topts.data_size_out = 0;
        topts.repeat = 2;
        errno = 0;

        err = bpf_prog_test_run_opts(prog_fd, &topts);
        ASSERT_OK(errno, "run_no_output errno");
        ASSERT_OK(err, "run_no_output err");
        ASSERT_OK(topts.retval, "run_no_output retval");

        run_cnt += topts.repeat;
        check_run_cnt(prog_fd, run_cnt);

cleanup:
        if (skel)
                test_pkt_access__destroy(skel);
        if (stats_fd >= 0)
                close(stats_fd);
}