// Copyright 2018 The gVisor Authors. // // 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. #ifndef GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_ #define GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_ #include <sys/socket.h> // socket.h has to be included before if_arp.h. #include <linux/if_arp.h> #include <linux/netlink.h> #include <linux/rtnetlink.h> #include "test/util/file_descriptor.h" #include "test/util/posix_error.h" namespace gvisor { namespace testing { // Returns a bound netlink socket. PosixErrorOr<FileDescriptor> NetlinkBoundSocket(int protocol); // Returns the port ID of the passed socket. PosixErrorOr<uint32_t> NetlinkPortID(int fd); // Send the passed request and call fn on all response netlink messages. // // To be used on requests with NLM_F_MULTI reponses. PosixError NetlinkRequestResponse( const FileDescriptor& fd, void* request, size_t len, const std::function<void(const struct nlmsghdr* hdr)>& fn, bool expect_nlmsgerr); // Send the passed request and call fn on all response netlink messages. // // To be used on requests without NLM_F_MULTI reponses. PosixError NetlinkRequestResponseSingle( const FileDescriptor& fd, void* request, size_t len, const std::function<void(const struct nlmsghdr* hdr)>& fn); // Send the passed request then expect and return an ack or error. PosixError NetlinkRequestAckOrError(const FileDescriptor& fd, uint32_t seq, void* request, size_t len); // Find rtnetlink attribute in message. const struct rtattr* FindRtAttr(const struct nlmsghdr* hdr, const struct ifinfomsg* msg, int16_t attr); } // namespace testing } // namespace gvisor #endif // GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_