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

void test_xdp(void)
{
        struct vip key4 = {.protocol = 6, .family = AF_INET};
        struct vip key6 = {.protocol = 6, .family = AF_INET6};
        struct iptnl_info value4 = {.family = AF_INET};
        struct iptnl_info value6 = {.family = AF_INET6};
        const char *file = "./test_xdp.bpf.o";
        struct bpf_object *obj;
        char buf[128];
        struct ipv6hdr iph6;
        struct iphdr iph;
        int err, prog_fd, map_fd;
        LIBBPF_OPTS(bpf_test_run_opts, topts,
                .data_in = &pkt_v4,
                .data_size_in = sizeof(pkt_v4),
                .data_out = buf,
                .data_size_out = sizeof(buf),
                .repeat = 1,
        );

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

        map_fd = bpf_find_map(__func__, obj, "vip2tnl");
        if (map_fd < 0)
                goto out;
        bpf_map_update_elem(map_fd, &key4, &value4, 0);
        bpf_map_update_elem(map_fd, &key6, &value6, 0);

        err = bpf_prog_test_run_opts(prog_fd, &topts);
        memcpy(&iph, buf + sizeof(struct ethhdr), sizeof(iph));
        ASSERT_OK(err, "test_run");
        ASSERT_EQ(topts.retval, XDP_TX, "ipv4 test_run retval");
        ASSERT_EQ(topts.data_size_out, 74, "ipv4 test_run data_size_out");
        ASSERT_EQ(iph.protocol, IPPROTO_IPIP, "ipv4 test_run iph.protocol");

        topts.data_in = &pkt_v6;
        topts.data_size_in = sizeof(pkt_v6);
        topts.data_size_out = sizeof(buf);

        err = bpf_prog_test_run_opts(prog_fd, &topts);
        memcpy(&iph6, buf + sizeof(struct ethhdr), sizeof(iph6));
        ASSERT_OK(err, "test_run");
        ASSERT_EQ(topts.retval, XDP_TX, "ipv6 test_run retval");
        ASSERT_EQ(topts.data_size_out, 114, "ipv6 test_run data_size_out");
        ASSERT_EQ(iph6.nexthdr, IPPROTO_IPV6, "ipv6 test_run iph6.nexthdr");
out:
        bpf_object__close(obj);
}