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nuttx/net/net.h

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/****************************************************************************
* net/net.h
*
* Copyright (C) 2007-2009, 2011-2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 _NET_NET_H
#define _NET_NET_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifdef CONFIG_NET
#include <sys/types.h>
#include <stdint.h>
#include <time.h>
#include <nuttx/net/net.h>
#include <nuttx/net/uip.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Definitions of 8-bit socket flags */
/* Bits 0-2: Socket state */
#define _SF_IDLE 0x00 /* - There is no socket activity */
#define _SF_ACCEPT 0x01 /* - Socket is waiting to accept a connection */
#define _SF_RECV 0x02 /* - Waiting for recv action to complete */
#define _SF_SEND 0x03 /* - Waiting for send action to complete */
#define _SF_MASK 0x03 /* - Mask to isolate the above actions */
#define _SF_NONBLOCK 0x08 /* Bit 3: Don't block if no data (TCP/READ only) */
#define _SF_LISTENING 0x10 /* Bit 4: SOCK_STREAM is listening */
#define _SF_BOUND 0x20 /* Bit 5: SOCK_STREAM is bound to an address */
/* Bits 6-7: Connection state */
#define _SF_CONNECTED 0x40 /* Bit 6: SOCK_STREAM is connected */
#define _SF_CLOSED 0x80 /* Bit 7: SOCK_STREAM was gracefully disconnected */
/* Connection state encoding:
*
* _SF_CONNECTED==1 && _SF_CLOSED==0 - the socket is connected
* _SF_CONNECTED==0 && _SF_CLOSED==1 - the socket was gracefully disconnected
* _SF_CONNECTED==0 && _SF_CLOSED==0 - the socket was rudely disconnected
*/
/* Macro to manage the socket state and flags */
#define _SS_SETSTATE(s,f) (((s) & ~_SF_MASK) | (f))
#define _SS_GETSTATE(s) ((s) & _SF_MASK)
#define _SS_ISBUSY(s) (_SS_GETSTATE(s) != _SF_IDLE)
#define _SS_ISNONBLOCK(s) (((s) & _SF_NONBLOCK) != 0)
#define _SS_ISLISTENING(s) (((s) & _SF_LISTENING) != 0)
#define _SS_ISBOUND(s) (((s) & _SF_CONNECTED) != 0)
#define _SS_ISCONNECTED(s) (((s) & _SF_CONNECTED) != 0)
#define _SS_ISCLOSED(s) (((s) & _SF_CLOSED) != 0)
/* This macro converts a socket option value into a bit setting */
#define _SO_BIT(o) (1 << (o))
/* These define bit positions for each socket option (see sys/socket.h) */
#define _SO_DEBUG _SO_BIT(SO_DEBUG)
#define _SO_ACCEPTCONN _SO_BIT(SO_ACCEPTCONN)
#define _SO_BROADCAST _SO_BIT(SO_BROADCAST)
#define _SO_REUSEADDR _SO_BIT(SO_REUSEADDR)
#define _SO_KEEPALIVE _SO_BIT(SO_KEEPALIVE)
#define _SO_LINGER _SO_BIT(SO_LINGER)
#define _SO_OOBINLINE _SO_BIT(SO_OOBINLINE)
#define _SO_SNDBUF _SO_BIT(SO_SNDBUF)
#define _SO_RCVBUF _SO_BIT(SO_RCVBUF)
#define _SO_ERROR _SO_BIT(SO_ERROR)
#define _SO_TYPE _SO_BIT(SO_TYPE)
#define _SO_DONTROUTE _SO_BIT(SO_DONTROUTE)
#define _SO_RCVLOWAT _SO_BIT(SO_RCVLOWAT)
#define _SO_RCVTIMEO _SO_BIT(SO_RCVTIMEO)
#define _SO_SNDLOWAT _SO_BIT(SO_SNDLOWAT)
#define _SO_SNDTIMEO _SO_BIT(SO_SNDTIMEO)
/* This is the larget option value */
#define _SO_MAXOPT (15)
/* Macros to set, test, clear options */
#define _SO_SETOPT(s,o) ((s) |= _SO_BIT(o))
#define _SO_CLROPT(s,o) ((s) &= ~_SO_BIT(o))
#define _SO_GETOPT(s,o) (((s) & _SO_BIT(o)) != 0)
/* These are macros that can be used to determine if socket option code is
* valid (in range) and supported by API.
*/
#define _SO_GETONLYSET (_SO_ACCEPTCONN|_SO_ERROR|_SO_TYPE)
#define _SO_GETONLY(o) ((_SO_BIT(o) & _SO_GETONLYSET) != 0)
#define _SO_GETVALID(o) (((unsigned int)(o)) <= _SO_MAXOPT)
#define _SO_SETVALID(o) ((((unsigned int)(o)) <= _SO_MAXOPT) && !_SO_GETONLY(o))
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/* List of registered ethernet device drivers */
#if CONFIG_NSOCKET_DESCRIPTORS > 0
EXTERN struct uip_driver_s *g_netdevices;
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/* net_sockets.c *************************************************************/
int sockfd_allocate(int minsd);
void sock_release(FAR struct socket *psock);
void sockfd_release(int sockfd);
FAR struct socket *sockfd_socket(int sockfd);
/* net_connect.c *************************************************************/
#ifdef CONFIG_NET_TCP
struct tcp_conn_s; /* Forward reference */
int net_startmonitor(FAR struct socket *psock);
void net_stopmonitor(FAR struct tcp_conn_s *conn);
void net_lostconnection(FAR struct socket *psock, uint16_t flags);
#endif
/* net_close.c ***************************************************************/
int psock_close(FAR struct socket *psock);
/* sockopt support ***********************************************************/
#if defined(CONFIG_NET_SOCKOPTS) && !defined(CONFIG_DISABLE_CLOCK)
int net_timeo(uint32_t start_time, socktimeo_t timeo);
socktimeo_t net_timeval2dsec(FAR struct timeval *tv);
void net_dsec2timeval(uint16_t dsec, FAR struct timeval *tv);
#endif
/* net_register.c ************************************************************/
#if CONFIG_NSOCKET_DESCRIPTORS > 0
void netdev_seminit(void);
void netdev_semtake(void);
void netdev_semgive(void);
#endif
/* net_findbyname.c **********************************************************/
#if CONFIG_NSOCKET_DESCRIPTORS > 0
FAR struct uip_driver_s *netdev_findbyname(FAR const char *ifname);
#endif
/* net_findbyaddr.c **********************************************************/
#if CONFIG_NSOCKET_DESCRIPTORS > 0
FAR struct uip_driver_s *netdev_findbyaddr(const uip_ipaddr_t addr);
#endif
/* net_txnotify.c ************************************************************/
#if CONFIG_NSOCKET_DESCRIPTORS > 0
void netdev_txnotify(const uip_ipaddr_t addr);
#endif
/* net_rxnotify.c ************************************************************/
#if CONFIG_NSOCKET_DESCRIPTORS > 0 && defined(CONFIG_NET_RXAVAIL)
void netdev_rxnotify(const uip_ipaddr_t addr);
#else
# define netdev_rxnotify(addr)
#endif
/* net_count.c ***************************************************************/
#if CONFIG_NSOCKET_DESCRIPTORS > 0
int netdev_count(void);
#endif
/* send.c ********************************************************************/
ssize_t psock_send(FAR struct socket *psock, FAR const void *buf, size_t len,
int flags);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* CONFIG_NET */
#endif /* _NET_NET_H */
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