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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <OffloadControlTestUtils.h>
#include <android-base/unique_fd.h>
using android::base::unique_fd;
inline const sockaddr* asSockaddr(const sockaddr_nl* nladdr) {
return reinterpret_cast<const sockaddr*>(nladdr);
}
int conntrackSocket(unsigned groups) {
unique_fd s(socket(AF_NETLINK, SOCK_DGRAM, NETLINK_NETFILTER));
if (s.get() < 0) {
return -errno;
}
const struct sockaddr_nl bind_addr = {
.nl_family = AF_NETLINK,
.nl_pad = 0,
.nl_pid = 0,
.nl_groups = groups,
};
if (::bind(s.get(), asSockaddr(&bind_addr), sizeof(bind_addr)) < 0) {
return -errno;
}
const struct sockaddr_nl kernel_addr = {
.nl_family = AF_NETLINK,
.nl_pad = 0,
.nl_pid = 0,
.nl_groups = groups,
};
if (connect(s.get(), asSockaddr(&kernel_addr), sizeof(kernel_addr)) != 0) {
return -errno;
}
return s.release();
}
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