176 lines
5.5 KiB
C
176 lines
5.5 KiB
C
/****************************************************************************
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* net/socket/socket.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __NET_SOCKET_SOCKET_H
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#define __NET_SOCKET_SOCKET_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#ifdef CONFIG_NET
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#include <sys/types.h>
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#include <stdint.h>
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#include <time.h>
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#include <nuttx/clock.h>
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#include <nuttx/net/net.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* This macro converts a socket option value into a bit setting */
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#define _SO_BIT(o) (1 << (o))
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/* These define bit positions for each socket option (see sys/socket.h) */
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#define _SO_ACCEPTCONN _SO_BIT(SO_ACCEPTCONN)
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#define _SO_BROADCAST _SO_BIT(SO_BROADCAST)
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#define _SO_DEBUG _SO_BIT(SO_DEBUG)
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#define _SO_DONTROUTE _SO_BIT(SO_DONTROUTE)
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#define _SO_ERROR _SO_BIT(SO_ERROR)
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#define _SO_KEEPALIVE _SO_BIT(SO_KEEPALIVE)
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#define _SO_LINGER _SO_BIT(SO_LINGER)
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#define _SO_OOBINLINE _SO_BIT(SO_OOBINLINE)
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#define _SO_RCVBUF _SO_BIT(SO_RCVBUF)
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#define _SO_RCVLOWAT _SO_BIT(SO_RCVLOWAT)
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#define _SO_RCVTIMEO _SO_BIT(SO_RCVTIMEO)
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#define _SO_REUSEADDR _SO_BIT(SO_REUSEADDR)
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#define _SO_SNDBUF _SO_BIT(SO_SNDBUF)
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#define _SO_SNDLOWAT _SO_BIT(SO_SNDLOWAT)
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#define _SO_SNDTIMEO _SO_BIT(SO_SNDTIMEO)
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#define _SO_TYPE _SO_BIT(SO_TYPE)
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/* This is the largest option value. REVISIT: belongs in sys/socket.h */
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#define _SO_MAXOPT (16)
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/* Macros to set, test, clear options */
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#define _SO_SETOPT(s,o) ((s) |= _SO_BIT(o))
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#define _SO_CLROPT(s,o) ((s) &= ~_SO_BIT(o))
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#define _SO_GETOPT(s,o) (((s) & _SO_BIT(o)) != 0)
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/* These are macros that can be used to determine if socket option code is
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* valid (in range) and supported by API.
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*/
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#define _SO_GETONLYSET (_SO_ACCEPTCONN|_SO_ERROR|_SO_TYPE)
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#define _SO_GETONLY(o) ((_SO_BIT(o) & _SO_GETONLYSET) != 0)
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#define _SO_GETVALID(o) (((unsigned int)(o)) <= _SO_MAXOPT)
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#define _SO_SETVALID(o) ((((unsigned int)(o)) <= _SO_MAXOPT) && !_SO_GETONLY(o))
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/* Macros to convert timeout value */
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#ifdef CONFIG_NET_SOCKOPTS
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# define _SO_TIMEOUT(t) ((t) ? (t) * MSEC_PER_DSEC : UINT_MAX)
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#else
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# define _SO_TIMEOUT(t) (UINT_MAX)
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#endif /* CONFIG_NET_SOCKOPTS */
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/* Macro to set socket errors */
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#ifdef CONFIG_NET_SOCKOPTS
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# define _SO_SETERRNO(s,e) \
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do \
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{ \
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if (s != NULL && (s)->s_conn != NULL) \
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{ \
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FAR struct socket_conn_s *_conn = (s)->s_conn; \
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_conn->s_error = (int16_t)e; \
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} \
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set_errno(e); \
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} \
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while (0)
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#else
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# define _SO_SETERRNO(s,e) set_errno(e)
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#endif /* CONFIG_NET_SOCKOPTS */
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: net_sockif
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*
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* Description:
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* Return the socket interface associated with this address family.
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*
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* Input Parameters:
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* family - Socket address family
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* type - Socket type
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* protocol - Socket protocol
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*
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* Returned Value:
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* On success, a non-NULL instance of struct sock_intf_s is returned. NULL
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* is returned only if the address family is not supported.
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*
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****************************************************************************/
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FAR const struct sock_intf_s *
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net_sockif(sa_family_t family, int type, int protocol);
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/****************************************************************************
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* Name: net_timeo
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*
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* Description:
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* Check if a timeout has elapsed. This can be called from a socket poll
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* function to determine if a timeout has occurred.
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*
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* Input Parameters:
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* start_time Timeout start time in system clock ticks
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* timeout Timeout value in deciseconds.
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*
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* Returned Value:
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* 0 (FALSE) if not timeout; 1 (TRUE) if timeout
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*
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* Assumptions:
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*
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****************************************************************************/
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#ifdef CONFIG_NET_SOCKOPTS
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int net_timeo(clock_t start_time, socktimeo_t timeo);
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* CONFIG_NET */
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#endif /* __NET_SOCKET_SOCKET_H */
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