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/****************************************************************************
* include/nuttx/net/pkt.h
* Definitions for use with AF_PACKET sockets
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Daniel Laszlo Sitzer <dlsitzer@gmail.com>
*
* Includes some definitions that a compatible with the LGPL GNU C Library
* header file of the same name.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_NET_PKT_H
#define __INCLUDE_NUTTX_NET_PKT_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <nuttx/net/netconfig.h>
/****************************************************************************
* Public Type Definitions
****************************************************************************/
/* Representation of a uIP packet socket connection */
struct pkt_conn_s
{
dq_entry_t node; /* Supports a double linked list */
uint8_t lmac[6]; /* The local Ethernet address in network byte order */
uint8_t ifindex;
uint16_t proto;
uint8_t crefs; /* Reference counts on this instance */
/* Defines the list of packet callbacks */
struct uip_callback_s *list;
};
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/* uIP application functions
*
* Functions used by an application running of top of uIP. This includes
* functions for opening and closing connections, sending and receiving
* data, etc.
*
* Find a free connection structure and allocate it for use. This is
* normally something done by the implementation of the socket() API
*/
FAR struct pkt_conn_s *pkt_alloc(void);
/* Allocate a new packet socket data callback */
#define pkt_callbackalloc(conn) uip_callbackalloc(&conn->list)
#define pkt_callbackfree(conn,cb) uip_callbackfree(cb, &conn->list)
/* Free a connection structure that is no longer in use. This should
* be done by the implementation of close()
*/
void pkt_free(FAR struct pkt_conn_s *conn);
void pkt_poll(FAR struct uip_driver_s *dev, FAR struct pkt_conn_s *conn);
int pkt_input(FAR struct uip_driver_s *dev);
#endif /* __INCLUDE_NUTTX_NET_PKT_H */
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