// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2023 Facebook */
#include <test_progs.h>
#include <bpf/libbpf.h>
#include <sys/types.h>
#include <sys/socket.h>
#include "sk_storage_omem_uncharge.skel.h"

void test_sk_storage_omem_uncharge(void)
{
        struct sk_storage_omem_uncharge *skel;
        int sk_fd = -1, map_fd, err, value;
        socklen_t optlen;

        skel = sk_storage_omem_uncharge__open_and_load();
        if (!ASSERT_OK_PTR(skel, "skel open_and_load"))
                return;
        map_fd = bpf_map__fd(skel->maps.sk_storage);

        /* A standalone socket not binding to addr:port,
         * so nentns is not needed.
         */
        sk_fd = socket(AF_INET6, SOCK_STREAM, 0);
        if (!ASSERT_GE(sk_fd, 0, "socket"))
                goto done;

        optlen = sizeof(skel->bss->cookie);
        err = getsockopt(sk_fd, SOL_SOCKET, SO_COOKIE, &skel->bss->cookie, &optlen);
        if (!ASSERT_OK(err, "getsockopt(SO_COOKIE)"))
                goto done;

        value = 0;
        err = bpf_map_update_elem(map_fd, &sk_fd, &value, 0);
        if (!ASSERT_OK(err, "bpf_map_update_elem(value=0)"))
                goto done;

        value = 0xdeadbeef;
        err = bpf_map_update_elem(map_fd, &sk_fd, &value, 0);
        if (!ASSERT_OK(err, "bpf_map_update_elem(value=0xdeadbeef)"))
                goto done;

        err = sk_storage_omem_uncharge__attach(skel);
        if (!ASSERT_OK(err, "attach"))
                goto done;

        close(sk_fd);
        sk_fd = -1;

        ASSERT_EQ(skel->bss->cookie_found, 2, "cookie_found");
        ASSERT_EQ(skel->bss->omem, 0, "omem");

done:
        sk_storage_omem_uncharge__destroy(skel);
        if (sk_fd != -1)
                close(sk_fd);
}