+++ /dev/null
-/*
- * WPA Supplicant - Layer2 packet interface definition
- * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
- *
- * This file defines an interface for layer 2 (link layer) packet sending and
- * receiving. l2_packet_linux.c is one implementation for such a layer 2
- * implementation using Linux packet sockets and l2_packet_pcap.c another one
- * using libpcap and libdnet. When porting %wpa_supplicant to other operating
- * systems, a new l2_packet implementation may need to be added.
- */
-
-#ifndef L2_PACKET_H
-#define L2_PACKET_H
-
-/**
- * struct l2_packet_data - Internal l2_packet data structure
- *
- * This structure is used by the l2_packet implementation to store its private
- * data. Other files use a pointer to this data when calling the l2_packet
- * functions, but the contents of this structure should not be used directly
- * outside l2_packet implementation.
- */
-struct l2_packet_data;
-
-#ifdef _MSC_VER
-#pragma pack(push, 1)
-#endif /* _MSC_VER */
-
-struct l2_ethhdr {
- u8 h_dest[ETH_ALEN];
- u8 h_source[ETH_ALEN];
- be16 h_proto;
-} STRUCT_PACKED;
-
-#ifdef _MSC_VER
-#pragma pack(pop)
-#endif /* _MSC_VER */
-
-/**
- * l2_packet_init - Initialize l2_packet interface
- * @ifname: Interface name
- * @own_addr: Optional own MAC address if available from driver interface or
- * %NULL if not available
- * @protocol: Ethernet protocol number in host byte order
- * @rx_callback: Callback function that will be called for each received packet
- * @rx_callback_ctx: Callback data (ctx) for calls to rx_callback()
- * @l2_hdr: 1 = include layer 2 header, 0 = do not include header
- * Returns: Pointer to internal data or %NULL on failure
- *
- * rx_callback function will be called with src_addr pointing to the source
- * address (MAC address) of the the packet. If l2_hdr is set to 0, buf
- * points to len bytes of the payload after the layer 2 header and similarly,
- * TX buffers start with payload. This behavior can be changed by setting
- * l2_hdr=1 to include the layer 2 header in the data buffer.
- */
-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);
-
-/**
- * l2_packet_deinit - Deinitialize l2_packet interface
- * @l2: Pointer to internal l2_packet data from l2_packet_init()
- */
-void l2_packet_deinit(struct l2_packet_data *l2);
-
-/**
- * l2_packet_get_own_addr - Get own layer 2 address
- * @l2: Pointer to internal l2_packet data from l2_packet_init()
- * @addr: Buffer for the own address (6 bytes)
- * Returns: 0 on success, -1 on failure
- */
-int l2_packet_get_own_addr(struct l2_packet_data *l2, u8 *addr);
-
-/**
- * l2_packet_send - Send a packet
- * @l2: Pointer to internal l2_packet data from l2_packet_init()
- * @dst_addr: Destination address for the packet (only used if l2_hdr == 0)
- * @proto: Protocol/ethertype for the packet in host byte order (only used if
- * l2_hdr == 0)
- * @buf: 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.
- * @len: Length of the buffer (including l2 header only if l2_hdr == 1)
- * Returns: >=0 on success, <0 on failure
- */
-int l2_packet_send(struct l2_packet_data *l2, const u8 *dst_addr, u16 proto,
- const u8 *buf, size_t len);
-
-/**
- * l2_packet_get_ip_addr - Get the current IP address from the interface
- * @l2: Pointer to internal l2_packet data from l2_packet_init()
- * @buf: Buffer for the IP address in text format
- * @len: 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.
- */
-int l2_packet_get_ip_addr(struct l2_packet_data *l2, char *buf, size_t len);
-
-
-/**
- * l2_packet_notify_auth_start - Notify l2_packet about start of authentication
- * @l2: 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.
- */
-void l2_packet_notify_auth_start(struct l2_packet_data *l2);
-
-#endif /* L2_PACKET_H */
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