/home/aaron/olsrd-current/olsrd/lib/bmf/src/NetworkInterfaces.c File Reference

#include "NetworkInterfaces.h"
#include <stddef.h>
#include <syslog.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <assert.h>
#include <net/if.h>
#include <netinet/in.h>
#include <linux/if_ether.h>
#include <linux/if_packet.h>
#include <linux/if_tun.h>
#include <netinet/ip.h>
#include <netinet/udp.h>
#include <stdlib.h>
#include <stdio.h>
#include "olsr.h"
#include "ipcalc.h"
#include "defs.h"
#include "link_set.h"
#include "tc_set.h"
#include "net_olsr.h"
#include "lq_plugin.h"
#include "olsr_ip_prefix_list.h"
#include "olsr_logging.h"
#include "Packet.h"
#include "Bmf.h"
#include "Address.h"

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Defines
#define	ETHERTUNTAPIPNOTSET 0
#define	IPV4_MAX_ADDRLEN 16
#define	IPV4_MAX_PREFIXLEN 32
#define	MAX_NON_OLSR_IFS 32
Functions
int	SetBmfInterfaceName (const char ifname, void data __attribute__((unused)), set_plugin_parameter_addon addon __attribute__((unused)))
int	SetBmfInterfaceIp (const char ip, void data __attribute__((unused)), set_plugin_parameter_addon addon __attribute__((unused)))
int	SetCapturePacketsOnOlsrInterfaces (const char enable, void data __attribute__((unused)), set_plugin_parameter_addon addon __attribute__((unused)))
int	SetBmfMechanism (const char mechanism, void data __attribute__((unused)), set_plugin_parameter_addon addon __attribute__((unused)))
static void	AddDescriptorToInputSet (int skfd)
int	DeactivateSpoofFilter (void)
void	RestoreSpoofFilter (void)
void	FindNeighbors (struct TBestNeighbors neighbors, struct link_entry bestNeighbor, struct TBmfInterface intf, union olsr_ip_addr source, union olsr_ip_addr forwardedBy, union olsr_ip_addr forwardedTo, int nPossibleNeighbors)
static int	CreateCaptureSocket (const char *ifName)
static int	CreateListeningSocket (const char *ifName)
static int	CreateEncapsulateSocket (const char *ifName)
static int	CreateLocalEtherTunTap (void)
static int	CreateInterface (const char ifName, struct interface olsrIntf)
int	CreateBmfNetworkInterfaces (struct interface *skipThisIntf)
void	AddInterface (struct interface *newIntf)
void	CloseBmfNetworkInterfaces (void)
int	AddNonOlsrBmfIf (const char ifName, void data __attribute__((unused)), set_plugin_parameter_addon addon __attribute__((unused)))
int	IsNonOlsrBmfIf (const char *ifName)
void	CheckAndUpdateLocalBroadcast (unsigned char ipPacket, union olsr_ip_addr broadAddr)
void	AddMulticastRoute (void)
void	DeleteMulticastRoute (void)
Variables
struct TBmfInterface *	BmfInterfaces = NULL
struct TBmfInterface *	LastBmfInterface = NULL
int	HighestSkfd = -1
fd_set	InputSet
int	EtherTunTapFd = -1
char	EtherTunTapIfName [IFNAMSIZ] = "bmf0"
enum TBmfMechanism	BmfMechanism = BM_BROADCAST
u_int32_t	EtherTunTapIp = ETHERTUNTAPIPNOTSET
u_int32_t	EtherTunTapIpMask = 0xFFFFFFFF
u_int32_t	EtherTunTapIpBroadcast = ETHERTUNTAPIPNOTSET
int	TunTapIpOverruled = 0
int	CapturePacketsOnOlsrInterfaces = 0
static char	EthTapSpoofState = '1'
static char	NonOlsrIfNames [MAX_NON_OLSR_IFS][IFNAMSIZ]
static int	nNonOlsrIfs = 0

Define Documentation

#define ETHERTUNTAPIPNOTSET 0

Definition at line 102 of file NetworkInterfaces.c.

Referenced by CreateLocalEtherTunTap().

#define IPV4_MAX_ADDRLEN 16

Referenced by SetBmfInterfaceIp().

#define IPV4_MAX_PREFIXLEN 32

Referenced by SetBmfInterfaceIp().

#define MAX_NON_OLSR_IFS 32

Definition at line 1292 of file NetworkInterfaces.c.

Referenced by AddNonOlsrBmfIf().

Function Documentation

static void AddDescriptorToInputSet ( int skfd ) [static]

Definition at line 276 of file NetworkInterfaces.c.

References HighestSkfd, and InputSet.

Referenced by CreateCaptureSocket(), CreateEncapsulateSocket(), CreateListeningSocket(), and CreateLocalEtherTunTap().

void AddInterface ( struct interface * newIntf )

Definition at line 1199 of file NetworkInterfaces.c.

Referenced by InterfaceChange().

void AddMulticastRoute ( void )

Definition at line 1419 of file NetworkInterfaces.c.

References ARM_NOWARN_ALIGN, EtherTunTapIfName, LOG_PLUGINS, OLSR_WARN, and RTF_UP.

Referenced by InitBmf().

int AddNonOlsrBmfIf	(	const char *	ifName,
		void *data	__attribute__(unused),
		set_plugin_parameter_addon addon	__attribute__(unused)
	)

Definition at line 1308 of file NetworkInterfaces.c.

References LOG_PLUGINS, MAX_NON_OLSR_IFS, and OLSR_WARN.

void CheckAndUpdateLocalBroadcast	(	unsigned char *	ipPacket,
		union olsr_ip_addr *	broadAddr
	)

Definition at line 1359 of file NetworkInterfaces.c.

References ARM_NOWARN_ALIGN, GetIpHeaderLength(), IsMulticast(), and olsr_ip_addr::v4.

Referenced by BmfEncapsulationPacketReceived(), BmfPacketCaptured(), and BmfTunPacketCaptured().

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void CloseBmfNetworkInterfaces ( void )

Definition at line 1227 of file NetworkInterfaces.c.

Referenced by CloseBmf(), and CloseMDNS().

int CreateBmfNetworkInterfaces ( struct interface * skipThisIntf )

Definition at line 1102 of file NetworkInterfaces.c.

Referenced by InitBmf(), and InitMDNS().

static int CreateCaptureSocket ( const char * ifName ) [static]

Definition at line 585 of file NetworkInterfaces.c.

References AddDescriptorToInputSet(), LOG_PLUGINS, and OLSR_WARN.

Referenced by CreateInterface().

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static int CreateEncapsulateSocket ( const char * ifName ) [static]

Definition at line 729 of file NetworkInterfaces.c.

References AddDescriptorToInputSet(), BMF_ENCAP_PORT, LOG_PLUGINS, and OLSR_WARN.

Referenced by CreateInterface().

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static int CreateInterface	(	const char *	ifName,
		struct interface *	olsrIntf
	)			`[static]`

Definition at line 948 of file NetworkInterfaces.c.

References ARM_NOWARN_ALIGN, BM_UNICAST_PROMISCUOUS, BmfMechanism, TBmfInterface::broadAddr, CapturePacketsOnOlsrInterfaces, TBmfInterface::capturingSkfd, CreateCaptureSocket(), CreateEncapsulateSocket(), CreateListeningSocket(), TBmfInterface::encapsulatingSkfd, TBmfInterface::fragmentHistory, TBmfInterface::ifName, interface::int_multicast, interface::int_src, TBmfInterface::intAddr, TBmfInterface::listeningSkfd, LOG_PLUGINS, TBmfInterface::macAddr, TBmfInterface::nBmfPacketsRx, TBmfInterface::nBmfPacketsRxDup, TBmfInterface::nBmfPacketsTx, TBmfInterface::next, TBmfInterface::nextFragmentHistoryEntry, OLSR_DEBUG, OLSR_WARN, TBmfInterface::olsrIntf, olsr_sockaddr::v4, and olsr_ip_addr::v4.

Referenced by AddInterface(), and CreateBmfNetworkInterfaces().

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static int CreateListeningSocket ( const char * ifName ) [static]

Definition at line 657 of file NetworkInterfaces.c.

References AddDescriptorToInputSet(), LOG_PLUGINS, and OLSR_WARN.

Referenced by CreateInterface().

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static int CreateLocalEtherTunTap ( void ) [static]

Definition at line 796 of file NetworkInterfaces.c.

References AddDescriptorToInputSet(), ARM_NOWARN_ALIGN, ETHERTUNTAPDEFAULTIP, EtherTunTapIfName, EtherTunTapIp, EtherTunTapIpBroadcast, EtherTunTapIpMask, ETHERTUNTAPIPNOTSET, olsr_config::hna_entries, TBmfInterface::intAddr, ip_prefix_list_add(), LOG_PLUGINS, TBmfInterface::next, olsr_cnf, OLSR_DEBUG, OLSR_WARN, TBmfInterface::olsrIntf, TunTapIpOverruled, and olsr_ip_addr::v4.

Referenced by CreateBmfNetworkInterfaces().

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int DeactivateSpoofFilter ( void )

Definition at line 301 of file NetworkInterfaces.c.

References EtherTunTapIfName, LOG_PLUGINS, and OLSR_WARN.

Referenced by InitBmf().

void DeleteMulticastRoute ( void )

Definition at line 1461 of file NetworkInterfaces.c.

References ARM_NOWARN_ALIGN, ETHERTUNTAPDEFAULTIP, EtherTunTapIfName, EtherTunTapIp, LOG_PLUGINS, OLSR_WARN, and RTF_UP.

Referenced by CloseBmf().

void FindNeighbors	(	struct TBestNeighbors *	neighbors,
		struct link_entry **	bestNeighbor,
		struct TBmfInterface *	intf,
		union olsr_ip_addr *	source,
		union olsr_ip_addr *	forwardedBy,
		union olsr_ip_addr *	forwardedTo,
		int *	nPossibleNeighbors
	)