1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/lib/mdns/src/NetworkInterfaces.h Thu Mar 26 01:25:34 2009 +0100
1.3 @@ -0,0 +1,145 @@
1.4 +/*
1.5 +OLSR MDNS plugin.
1.6 +Written by Saverio Proto <zioproto@gmail.com> and Claudio Pisa <clauz@ninux.org>.
1.7 +
1.8 + This file is part of OLSR MDNS PLUGIN.
1.9 +
1.10 + The OLSR MDNS PLUGIN is free software: you can redistribute it and/or modify
1.11 + it under the terms of the GNU General Public License as published by
1.12 + the Free Software Foundation, either version 3 of the License, or
1.13 + (at your option) any later version.
1.14 +
1.15 + The OLSR MDNS PLUGIN is distributed in the hope that it will be useful,
1.16 + but WITHOUT ANY WARRANTY; without even the implied warranty of
1.17 + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.18 + GNU General Public License for more details.
1.19 +
1.20 + You should have received a copy of the GNU General Public License
1.21 + along with Foobar. If not, see <http://www.gnu.org/licenses/>.
1.22 +
1.23 +
1.24 + */
1.25 +
1.26 +
1.27 +#ifndef _BMF_NETWORKINTERFACES_H
1.28 +#define _BMF_NETWORKINTERFACES_H
1.29 +
1.30 +/* System includes */
1.31 +#include <netinet/in.h> /* struct in_addr */
1.32 +
1.33 +/* OLSR includes */
1.34 +#include "olsr_types.h" /* olsr_ip_addr */
1.35 +#include "plugin.h" /* union set_plugin_parameter_addon */
1.36 +
1.37 +/* Plugin includes */
1.38 +#include "Packet.h" /* IFHWADDRLEN */
1.39 +#include "mdns.h"
1.40 +/* Size of buffer in which packets are received */
1.41 +#define BMF_BUFFER_SIZE 2048
1.42 +
1.43 +struct TBmfInterface
1.44 +{
1.45 + /* File descriptor of raw packet socket, used for capturing multicast packets */
1.46 + int capturingSkfd;
1.47 +
1.48 + /* File descriptor of UDP (datagram) socket for encapsulated multicast packets.
1.49 + * Only used for OLSR-enabled interfaces; set to -1 if interface is not OLSR-enabled. */
1.50 + int encapsulatingSkfd;
1.51 +
1.52 + /* File descriptor of UDP packet socket, used for listening to encapsulation packets.
1.53 + * Used only when PlParam "BmfMechanism" is set to "UnicastPromiscuous". */
1.54 + int listeningSkfd;
1.55 +
1.56 + unsigned char macAddr[IFHWADDRLEN];
1.57 +
1.58 + char ifName[IFNAMSIZ];
1.59 +
1.60 + /* OLSRs idea of this network interface. NULL if this interface is not
1.61 + * OLSR-enabled. */
1.62 + struct interface* olsrIntf;
1.63 +
1.64 + /* IP address of this network interface */
1.65 + union olsr_ip_addr intAddr;
1.66 +
1.67 + /* Broadcast address of this network interface */
1.68 + union olsr_ip_addr broadAddr;
1.69 +
1.70 + #define FRAGMENT_HISTORY_SIZE 10
1.71 + struct TFragmentHistory
1.72 + {
1.73 + u_int16_t ipId;
1.74 + u_int8_t ipProto;
1.75 + struct in_addr ipSrc;
1.76 + struct in_addr ipDst;
1.77 + } fragmentHistory [FRAGMENT_HISTORY_SIZE];
1.78 +
1.79 + int nextFragmentHistoryEntry;
1.80 +
1.81 + /* Number of received and transmitted BMF packets on this interface */
1.82 + u_int32_t nBmfPacketsRx;
1.83 + u_int32_t nBmfPacketsRxDup;
1.84 + u_int32_t nBmfPacketsTx;
1.85 +
1.86 + /* Next element in list */
1.87 + struct TBmfInterface* next;
1.88 +};
1.89 +
1.90 +extern struct TBmfInterface* BmfInterfaces;
1.91 +
1.92 +extern int HighestSkfd;
1.93 +extern fd_set InputSet;
1.94 +
1.95 +extern int EtherTunTapFd;
1.96 +
1.97 +extern char EtherTunTapIfName[];
1.98 +
1.99 +/* 10.255.255.253 in host byte order */
1.100 +#define ETHERTUNTAPDEFAULTIP 0x0AFFFFFD
1.101 +
1.102 +extern u_int32_t EtherTunTapIp;
1.103 +extern u_int32_t EtherTunTapIpMask;
1.104 +extern u_int32_t EtherTunTapIpBroadcast;
1.105 +
1.106 +
1.107 +enum TBmfMechanism { BM_BROADCAST = 0, BM_UNICAST_PROMISCUOUS };
1.108 +extern enum TBmfMechanism BmfMechanism;
1.109 +
1.110 +int SetBmfInterfaceName(const char* ifname, void* data, set_plugin_parameter_addon addon);
1.111 +int SetBmfInterfaceIp(const char* ip, void* data, set_plugin_parameter_addon addon);
1.112 +int SetCapturePacketsOnOlsrInterfaces(const char* enable, void* data, set_plugin_parameter_addon addon);
1.113 +int SetBmfMechanism(const char* mechanism, void* data, set_plugin_parameter_addon addon);
1.114 +int DeactivateSpoofFilter(void);
1.115 +void RestoreSpoofFilter(void);
1.116 +
1.117 +#define MAX_UNICAST_NEIGHBORS 10
1.118 +struct TBestNeighbors
1.119 +{
1.120 + struct link_entry* links[MAX_UNICAST_NEIGHBORS];
1.121 +};
1.122 +
1.123 +void FindNeighbors(
1.124 + struct TBestNeighbors* neighbors,
1.125 + struct link_entry** bestNeighbor,
1.126 + struct TBmfInterface* intf,
1.127 + union olsr_ip_addr* source,
1.128 + union olsr_ip_addr* forwardedBy,
1.129 + union olsr_ip_addr* forwardedTo,
1.130 + int* nPossibleNeighbors);
1.131 +
1.132 +int CreateBmfNetworkInterfaces(struct interface* skipThisIntf);
1.133 +void AddInterface(struct interface* newIntf);
1.134 +void CloseBmfNetworkInterfaces(void);
1.135 +int AddNonOlsrBmfIf(const char* ifName, void* data, set_plugin_parameter_addon addon);
1.136 +int IsNonOlsrBmfIf(const char* ifName);
1.137 +void CheckAndUpdateLocalBroadcast(unsigned char* ipPacket, union olsr_ip_addr* broadAddr);
1.138 +void AddMulticastRoute(void);
1.139 +void DeleteMulticastRoute(void);
1.140 +
1.141 +#endif /* _BMF_NETWORKINTERFACES_H */
1.142 +
1.143 +/*
1.144 + * Local Variables:
1.145 + * c-basic-offset: 2
1.146 + * indent-tabs-mode: nil
1.147 + * End:
1.148 + */