| // Copyright 2018 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "shill/net/netlink_fd.h" |
| |
| #include <linux/netlink.h> |
| #include <sys/socket.h> |
| |
| #include <base/logging.h> |
| |
| #include "shill/net/sockets.h" |
| |
| namespace shill { |
| |
| int OpenNetlinkSocketFD(Sockets* sockets, |
| int netlink_family, |
| int netlink_groups_mask) { |
| int sockfd = |
| sockets->Socket(PF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, netlink_family); |
| if (sockfd < 0) { |
| PLOG(ERROR) << "Failed to open netlink socket for family " |
| << netlink_family; |
| return Sockets::kInvalidFileDescriptor; |
| } |
| |
| if (sockets->SetReceiveBuffer(sockfd, kNetlinkReceiveBufferSize)) |
| PLOG(WARNING) << "Failed to increase receive buffer size to " |
| << kNetlinkReceiveBufferSize << "b"; |
| |
| struct sockaddr_nl addr; |
| memset(&addr, 0, sizeof(addr)); |
| addr.nl_family = AF_NETLINK; |
| addr.nl_groups = netlink_groups_mask; |
| |
| if (sockets->Bind(sockfd, reinterpret_cast<struct sockaddr*>(&addr), |
| sizeof(addr)) < 0) { |
| PLOG(ERROR) << "Netlink socket bind failed for family " << netlink_family; |
| sockets->Close(sockfd); |
| return Sockets::kInvalidFileDescriptor; |
| } |
| |
| return sockfd; |
| } |
| |
| } // namespace shill |