63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_
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#define GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_
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#include <sys/socket.h>
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// socket.h has to be included before if_arp.h.
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#include <linux/if_arp.h>
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#include <linux/netlink.h>
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#include <linux/rtnetlink.h>
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#include "test/util/file_descriptor.h"
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#include "test/util/posix_error.h"
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namespace gvisor {
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namespace testing {
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// Returns a bound netlink socket.
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PosixErrorOr<FileDescriptor> NetlinkBoundSocket(int protocol);
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// Returns the port ID of the passed socket.
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PosixErrorOr<uint32_t> NetlinkPortID(int fd);
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// Send the passed request and call fn on all response netlink messages.
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//
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// To be used on requests with NLM_F_MULTI reponses.
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PosixError NetlinkRequestResponse(
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const FileDescriptor& fd, void* request, size_t len,
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const std::function<void(const struct nlmsghdr* hdr)>& fn,
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bool expect_nlmsgerr);
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// Send the passed request and call fn on all response netlink messages.
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//
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// To be used on requests without NLM_F_MULTI reponses.
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PosixError NetlinkRequestResponseSingle(
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const FileDescriptor& fd, void* request, size_t len,
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const std::function<void(const struct nlmsghdr* hdr)>& fn);
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// Send the passed request then expect and return an ack or error.
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PosixError NetlinkRequestAckOrError(const FileDescriptor& fd, uint32_t seq,
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void* request, size_t len);
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// Find rtnetlink attribute in message.
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const struct rtattr* FindRtAttr(const struct nlmsghdr* hdr,
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const struct ifinfomsg* msg, int16_t attr);
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} // namespace testing
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} // namespace gvisor
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#endif // GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_
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