xorp

ifconfig_get_netlink_socket.hh

00001 // -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-
00002 
00003 // Copyright (c) 2001-2011 XORP, Inc and Others
00004 //
00005 // This program is free software; you can redistribute it and/or modify
00006 // it under the terms of the GNU General Public License, Version 2, June
00007 // 1991 as published by the Free Software Foundation. Redistribution
00008 // and/or modification of this program under the terms of any other
00009 // version of the GNU General Public License is not permitted.
00010 // 
00011 // This program is distributed in the hope that it will be useful, but
00012 // WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For more details,
00014 // see the GNU General Public License, Version 2, a copy of which can be
00015 // found in the XORP LICENSE.gpl file.
00016 // 
00017 // XORP Inc, 2953 Bunker Hill Lane, Suite 204, Santa Clara, CA 95054, USA;
00018 // http://xorp.net
00019 
00020 // $XORP: xorp/fea/data_plane/ifconfig/ifconfig_get_netlink_socket.hh,v 1.11 2008/10/02 21:57:05 bms Exp $
00021 
00022 #ifndef __FEA_DATA_PLANE_IFCONFIG_IFCONFIG_GET_NETLINK_SOCKET_HH__
00023 #define __FEA_DATA_PLANE_IFCONFIG_IFCONFIG_GET_NETLINK_SOCKET_HH__
00024 
00025 #include <xorp_config.h>
00026 
00027 #ifdef HAVE_NETLINK_SOCKETS
00028 
00029 #include "fea/ifconfig_get.hh"
00030 #include "fea/data_plane/control_socket/netlink_socket.hh"
00031 
00032 
00033 class IfConfigGetNetlinkSocket : public IfConfigGet,
00034                  public NetlinkSocket {
00035 public:
00042     IfConfigGetNetlinkSocket(FeaDataPlaneManager& fea_data_plane_manager);
00043 
00047     virtual ~IfConfigGetNetlinkSocket();
00048 
00055     virtual int start(string& error_msg);
00056 
00063     virtual int stop(string& error_msg);
00064 
00071     virtual int pull_config(const IfTree* local_cfg, IfTree& iftree);
00072 
00073 
00074     virtual bool can_pull_one() { return can_get_single != 0; }
00075 
00078     virtual int pull_config_one(IfTree& iftree, const char* ifname, int if_index);
00079 
00093     static int parse_buffer_netlink_socket(IfConfig& ifconfig, IfTree& iftree,
00094                        const vector<uint8_t>& buffer) {
00095     bool modified = false;
00096     int nl_errno = 0;
00097     return parse_buffer_netlink_socket(ifconfig, iftree, buffer, modified, nl_errno);
00098     }
00099 
00102     static int parse_buffer_netlink_socket(IfConfig& ifconfig, IfTree& iftree,
00103                        const vector<uint8_t>& buffer,
00104                        bool& modified, int& nl_errno);
00105     
00106 private:
00107     int read_config(const IfTree* local_config, IfTree& iftree);
00108     int read_config_all(IfTree& iftree);
00109     int read_config_one(IfTree& iftree, const char* ifname, int if_index,
00110             int& nl_errno);
00111     int try_read_config_one(IfTree& iftree, const char* ifname, int if_index);
00112 
00113     int can_get_single;
00114 
00115     NetlinkSocketReader _ns_reader;
00116 };
00117 
00118 #endif
00119 #endif // __FEA_DATA_PLANE_IFCONFIG_IFCONFIG_GET_NETLINK_SOCKET_HH__
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