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/****************************************************************************
* nuttx/net.h
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 __NUTTX_NET_H
#define __NUTTX_NET_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifdef CONFIG_NET
#include <semaphore.h>
#include <net/uip/uip.h>
/****************************************************************************
* Definitions
****************************************************************************/
/* Socket descriptors are the index into the TCB sockets list, offset by the
* following amount. This offset is used to distinquish file descriptors from
* socket descriptors
*/
#ifdef CONFIG_NFILE_DESCRIPTORS
# define __SOCKFD_OFFSET CONFIG_NFILE_DESCRIPTORS
#else
# define __SOCKFD_OFFSET 0
#endif
/****************************************************************************
* Public Types
****************************************************************************/
/* This defines a bitmap big enough for one bit for each socket option */
typedef uint16 sockopt_t;
/* This defines the storage size of a timeout value. This effects only
* range of supported timeout values. With an LSB in seciseconds, the
* 16-bit maximum of 65535 corresponds to 1 hr 49 min 13.5 sec at decisecond
* resolution.
*/
typedef uint16 socktimeo_t;
/* This is the internal representation of a socket reference by a file
* descriptor.
*/
struct socket
{
int s_crefs; /* Reference count on the socket */
uint8 s_type; /* Protocol type: Only SOCK_STREAM or SOCK_DGRAM */
uint8 s_flags; /* See _SF_* definitions */
#ifdef CONFIG_NET_SOCKOPTS
sockopt_t s_options; /* Selected socket options */
#ifndef CONFIG_DISABLE_CLOCK
socktimeo_t s_rcvtimeo; /* Receive timeout value (in deciseconds) */
socktimeo_t s_sndtimeo; /* Send timeout value (in deciseconds) */
#endif
#endif
void *s_conn; /* Connection: struct uip_conn or uip_udp_conn */
};
/* This defines a list of sockets indexed by the socket descriptor */
#if CONFIG_NSOCKET_DESCRIPTORS > 0
struct socketlist
{
sem_t sl_sem; /* Manage access to the socket list */
sint16 sl_crefs; /* Reference count */
struct socket sl_sockets[CONFIG_NSOCKET_DESCRIPTORS];
};
#endif
/* This defines a bitmap big enough for one bit for each socket option */
typedef uint16 sockopt_t;
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/* net_sockets.c *************************************************************/
EXTERN void weak_function net_initialize(void);
EXTERN FAR struct socketlist *net_alloclist(void);
EXTERN int net_addreflist(FAR struct socketlist *list);
EXTERN int net_releaselist(FAR struct socketlist *list);
/* net-close.c ***************************************************************/
EXTERN int net_close(int sockfd);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* CONFIG_NET */
#endif /* __NUTTX_NET_H */
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