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

#define IFINDEX_LO 1

void serial_test_xdp_info(void)
{
        __u32 len = sizeof(struct bpf_prog_info), duration = 0, prog_id;
        const char *file = "./xdp_dummy.bpf.o";
        LIBBPF_OPTS(bpf_xdp_query_opts, opts);
        struct bpf_prog_info info = {};
        struct bpf_object *obj;
        int err, prog_fd;

        /* Get prog_id for XDP_ATTACHED_NONE mode */

        err = bpf_xdp_query_id(IFINDEX_LO, 0, &prog_id);
        if (CHECK(err, "get_xdp_none", "errno=%d\n", errno))
                return;
        if (CHECK(prog_id, "prog_id_none", "unexpected prog_id=%u\n", prog_id))
                return;

        err = bpf_xdp_query_id(IFINDEX_LO, XDP_FLAGS_SKB_MODE, &prog_id);
        if (CHECK(err, "get_xdp_none_skb", "errno=%d\n", errno))
                return;
        if (CHECK(prog_id, "prog_id_none_skb", "unexpected prog_id=%u\n",
                  prog_id))
                return;

        /* Setup prog */

        err = bpf_prog_test_load(file, BPF_PROG_TYPE_XDP, &obj, &prog_fd);
        if (CHECK_FAIL(err))
                return;

        err = bpf_prog_get_info_by_fd(prog_fd, &info, &len);
        if (CHECK(err, "get_prog_info", "errno=%d\n", errno))
                goto out_close;

        err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL);
        if (CHECK(err, "set_xdp_skb", "errno=%d\n", errno))
                goto out_close;

        /* Get prog_id for single prog mode */

        err = bpf_xdp_query_id(IFINDEX_LO, 0, &prog_id);
        if (CHECK(err, "get_xdp", "errno=%d\n", errno))
                goto out;
        if (CHECK(prog_id != info.id, "prog_id", "prog_id not available\n"))
                goto out;

        err = bpf_xdp_query_id(IFINDEX_LO, XDP_FLAGS_SKB_MODE, &prog_id);
        if (CHECK(err, "get_xdp_skb", "errno=%d\n", errno))
                goto out;
        if (CHECK(prog_id != info.id, "prog_id_skb", "prog_id not available\n"))
                goto out;

        err = bpf_xdp_query_id(IFINDEX_LO, XDP_FLAGS_DRV_MODE, &prog_id);
        if (CHECK(err, "get_xdp_drv", "errno=%d\n", errno))
                goto out;
        if (CHECK(prog_id, "prog_id_drv", "unexpected prog_id=%u\n", prog_id))
                goto out;

        /* Check xdp features supported by lo device */
        opts.feature_flags = ~0;
        err = bpf_xdp_query(IFINDEX_LO, XDP_FLAGS_DRV_MODE, &opts);
        if (!ASSERT_OK(err, "bpf_xdp_query"))
                goto out;

        ASSERT_EQ(opts.feature_flags, 0, "opts.feature_flags");
out:
        bpf_xdp_detach(IFINDEX_LO, 0, NULL);
out_close:
        bpf_object__close(obj);
}