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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020, Tessares SA. */
/* Copyright (c) 2022, SUSE. */
#include <test_progs.h>
#include "cgroup_helpers.h"
#include "network_helpers.h"
#include "mptcp_sock.skel.h"
struct mptcp_storage {
__u32 invoked;
__u32 is_mptcp;
};
static int verify_sk(int map_fd, int client_fd, __u32 is_mptcp)
{
int err, cfd = client_fd;
struct mptcp_storage val;
if (is_mptcp == 1)
return 0;
err = bpf_map_lookup_elem(map_fd, &cfd, &val);
if (!ASSERT_OK(err, "bpf_map_lookup_elem"))
return err;
if (!ASSERT_EQ(val.invoked, 1, "unexpected invoked count"))
err++;
if (!ASSERT_EQ(val.is_mptcp, 0, "unexpected is_mptcp"))
err++;
return err;
}
static int run_test(int cgroup_fd, int server_fd, bool is_mptcp)
{
int client_fd, prog_fd, map_fd, err;
struct mptcp_sock *sock_skel;
sock_skel = mptcp_sock__open_and_load();
if (!ASSERT_OK_PTR(sock_skel, "skel_open_load"))
return -EIO;
prog_fd = bpf_program__fd(sock_skel->progs._sockops);
if (!ASSERT_GE(prog_fd, 0, "bpf_program__fd")) {
err = -EIO;
goto out;
}
map_fd = bpf_map__fd(sock_skel->maps.socket_storage_map);
if (!ASSERT_GE(map_fd, 0, "bpf_map__fd")) {
err = -EIO;
goto out;
}
err = bpf_prog_attach(prog_fd, cgroup_fd, BPF_CGROUP_SOCK_OPS, 0);
if (!ASSERT_OK(err, "bpf_prog_attach"))
goto out;
client_fd = connect_to_fd(server_fd, 0);
if (!ASSERT_GE(client_fd, 0, "connect to fd")) {
err = -EIO;
goto out;
}
err += is_mptcp ? verify_sk(map_fd, client_fd, 1) :
verify_sk(map_fd, client_fd, 0);
close(client_fd);
out:
mptcp_sock__destroy(sock_skel);
return err;
}
static void test_base(void)
{
int server_fd, cgroup_fd;
cgroup_fd = test__join_cgroup("/mptcp");
if (!ASSERT_GE(cgroup_fd, 0, "test__join_cgroup"))
return;
/* without MPTCP */
server_fd = start_server(AF_INET, SOCK_STREAM, NULL, 0, 0);
if (!ASSERT_GE(server_fd, 0, "start_server"))
goto with_mptcp;
ASSERT_OK(run_test(cgroup_fd, server_fd, false), "run_test tcp");
close(server_fd);
with_mptcp:
/* with MPTCP */
server_fd = start_mptcp_server(AF_INET, NULL, 0, 0);
if (!ASSERT_GE(server_fd, 0, "start_mptcp_server"))
goto close_cgroup_fd;
ASSERT_OK(run_test(cgroup_fd, server_fd, true), "run_test mptcp");
close(server_fd);
close_cgroup_fd:
close(cgroup_fd);
}
void test_mptcp(void)
{
if (test__start_subtest("base"))
test_base();
}
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