l2_packet_pcap.c File Reference

#include "includes.h"
#include <sys/ioctl.h>
#include <pcap.h>
#include <dnet.h>
#include "common.h"
#include "eloop.h"
#include "l2_packet.h"

Include dependency graph for l2_packet_pcap.c:

Go to the source code of this file.

Classes
struct	l2_packet_data
Functions
void	l2_packet_deinit (struct l2_packet_data *l2)
int	l2_packet_get_ip_addr (struct l2_packet_data *l2, char *buf, size_t len)
int	l2_packet_get_own_addr (struct l2_packet_data *l2, u8 *addr)
struct l2_packet_data *	l2_packet_init (const char *ifname, const u8 *own_addr, unsigned short protocol, void(*rx_callback)(void *ctx, const u8 *src_addr, const u8 *buf, size_t len), void *rx_callback_ctx, int l2_hdr)
static int	l2_packet_init_libdnet (struct l2_packet_data *l2)
static int	l2_packet_init_libpcap (struct l2_packet_data *l2, unsigned short protocol)
void	l2_packet_notify_auth_start (struct l2_packet_data *l2)
static void	l2_packet_receive (int sock, void *eloop_ctx, void *sock_ctx)
int	l2_packet_send (struct l2_packet_data *l2, const u8 *dst_addr, u16 proto, const u8 *buf, size_t len)
Variables
static const u8	pae_group_addr [ETH_ALEN]

---

Function Documentation

void l2_packet_deinit

(

struct l2_packet_data *

l2

)

l2_packet_deinit - Deinitialize l2_packet interface : Pointer to internal l2_packet data from l2_packet_init()

Definition at line 320 of file l2_packet_pcap.c.

int l2_packet_get_ip_addr	(	struct l2_packet_data *	l2,
		char *	buf,
		size_t	len
	)

l2_packet_get_ip_addr - Get the current IP address from the interface : Pointer to internal l2_packet data from l2_packet_init() : Buffer for the IP address in text format : Maximum buffer length Returns: 0 on success, -1 on failure

This function can be used to get the current IP address from the interface bound to the l2_packet. This is mainly for status information and the IP address will be stored as an ASCII string. This function is not essential for wpa_supplicant operation, so full implementation is not required. l2_packet implementation will need to define the function, but it can return -1 if the IP address information is not available.

Definition at line 338 of file l2_packet_pcap.c.

int l2_packet_get_own_addr	(	struct l2_packet_data *	l2,
		u8 *	addr
	)

l2_packet_get_own_addr - Get own layer 2 address : Pointer to internal l2_packet data from l2_packet_init() : Buffer for the own address (6 bytes) Returns: 0 on success, -1 on failure

Definition at line 49 of file l2_packet_pcap.c.

struct l2_packet_data* l2_packet_init	(	const char *	ifname,
		const u8 *	own_addr,
		unsigned short	protocol,
		void(*)(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)	rx_callback,
		void *	rx_callback_ctx,
		int	l2_hdr
	)			[read]

Definition at line 284 of file l2_packet_pcap.c.

static int l2_packet_init_libdnet

(

struct l2_packet_data *

l2

)

[static]

Definition at line 57 of file l2_packet_pcap.c.

static int l2_packet_init_libpcap	(	struct l2_packet_data *	l2,
		unsigned short	protocol
	)			[static]

Definition at line 202 of file l2_packet_pcap.c.

void l2_packet_notify_auth_start

(

struct l2_packet_data *

l2

)

l2_packet_notify_auth_start - Notify l2_packet about start of authentication : Pointer to internal l2_packet data from l2_packet_init()

This function is called when authentication is expected to start, e.g., when association has been completed, in order to prepare l2_packet implementation for EAPOL frames. This function is used mainly if the l2_packet code needs to do polling in which case it can increasing polling frequency. This can also be an empty function if the l2_packet implementation does not benefit from knowing about the starting authentication.

Definition at line 374 of file l2_packet_pcap.c.

static void l2_packet_receive	(	int	sock,
		void *	eloop_ctx,
		void *	sock_ctx
	)			[static]

Definition at line 123 of file l2_packet_pcap.c.

int l2_packet_send	(	struct l2_packet_data *	l2,
		const u8 *	dst_addr,
		u16	proto,
		const u8 *	buf,
		size_t	len
	)

l2_packet_send - Send a packet : Pointer to internal l2_packet data from l2_packet_init() : Destination address for the packet (only used if l2_hdr == 0) : Protocol/ethertype for the packet in host byte order (only used if l2_hdr == 0) : Packet contents to be sent; including layer 2 header if l2_hdr was set to 1 in l2_packet_init() call. Otherwise, only the payload of the packet is included. : Length of the buffer (including l2 header only if l2_hdr == 1) Returns: >=0 on success, <0 on failure

Definition at line 83 of file l2_packet_pcap.c.

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Variable Documentation

const u8 pae_group_addr[ETH_ALEN] [static]

Initial value:

{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03 }

Definition at line 29 of file l2_packet_pcap.c.