/**************************************************************************** * net/inet/inet.h * * Copyright (C) 2007-2009, 2011-2014 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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_INET_INET_H #define __NET_INET_INET_H /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* Configuration */ #undef HAVE_INET_SOCKETS #undef HAVE_PFINET_SOCKETS #undef HAVE_PFINET6_SOCKETS #if defined(CONFIG_NET_IPv4) || defined(CONFIG_NET_IPv6) # define HAVE_INET_SOCKETS # if defined(CONFIG_NET_IPv4) # define HAVE_PFINET_SOCKETS # endif # if defined(CONFIG_NET_IPv6) # define HAVE_PFINET6_SOCKETS # endif #endif /**************************************************************************** * Public Data ****************************************************************************/ #undef EXTERN #if defined(__cplusplus) #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif #ifdef CONFIG_NET_IPv4 /* Increasing number used for the IP ID field. */ EXTERN uint16_t g_ipid; #endif /* CONFIG_NET_IPv4 */ /* Well-known IPv6 addresses */ #ifdef CONFIG_NET_IPv6 EXTERN const net_ipv6addr_t g_ipv6_unspecaddr; /* An address of all zeroes */ EXTERN const net_ipv6addr_t g_ipv6_allnodes; /* All link local nodes */ #if defined(CONFIG_NET_ICMPv6_AUTOCONF) || defined(CONFIG_NET_ICMPv6_ROUTER) EXTERN const net_ipv6addr_t g_ipv6_allrouters; /* All link local routers */ #ifdef CONFIG_NET_ICMPv6_AUTOCONF EXTERN const net_ipv6addr_t g_ipv6_llnetmask; /* Netmask for local link address */ #endif #endif #endif /* CONFIG_NET_IPv6 */ /**************************************************************************** * Public Function Prototypes ****************************************************************************/ #if defined(CONFIG_NET_TCP) && !defined(CONFIG_NET_TCP_NO_STACK) struct tcp_conn_s; /* Forward reference */ #endif struct socket; /* Forward reference */ /**************************************************************************** * Name: inet_setipid * * Description: * This function may be used at boot time to set the initial ip_id. * * Assumptions: * ****************************************************************************/ void inet_setipid(uint16_t id); /**************************************************************************** * Name: inet_sockif * * Description: * Return the socket interface associated with the inet address family. * * Input Parameters: * family - Socket address family * type - Socket type * protocol - Socket protocol * * Returned Value: * On success, a non-NULL instance of struct sock_intf_s is returned. NULL * is returned only if the address family is not supported. * ****************************************************************************/ FAR const struct sock_intf_s * inet_sockif(sa_family_t family, int type, int protocol); /**************************************************************************** * Name: ipv4_getsockname and ipv6_sockname * * Description: * The ipv4_getsockname() and ipv6_getsocknam() function retrieve the * locally-bound name of the specified INET socket. * * Input Parameters: * psock Point to the socket structure instance [in] * addr sockaddr structure to receive data [out] * addrlen Length of sockaddr structure [in/out] * * Returned Value: * On success, 0 is returned, the 'addr' argument points to the address * of the socket, and the 'addrlen' argument points to the length of the * address. Otherwise, a negated errno value is returned. See * getsockname() for the list of returned error values. * ****************************************************************************/ #ifdef CONFIG_NET_IPv4 int ipv4_getsockname(FAR struct socket *psock, FAR struct sockaddr *addr, FAR socklen_t *addrlen); #endif #ifdef CONFIG_NET_IPv6 int ipv6_getsockname(FAR struct socket *psock, FAR struct sockaddr *addr, FAR socklen_t *addrlen); #endif /**************************************************************************** * Name: ipv4_getpeername and ipv6_peername * * Description: * The ipv4_getpeername() and ipv6_getsocknam() function retrieve the * remote-connected name of the specified INET socket. * * Parameters: * psock Point to the socket structure instance [in] * addr sockaddr structure to receive data [out] * addrlen Length of sockaddr structure [in/out] * * Returned Value: * On success, 0 is returned, the 'addr' argument points to the address * of the socket, and the 'addrlen' argument points to the length of the * address. Otherwise, a negated errno value is returned. See * getpeername() for the list of returned error values. * ****************************************************************************/ #ifdef CONFIG_NET_IPv4 int ipv4_getpeername(FAR struct socket *psock, FAR struct sockaddr *addr, FAR socklen_t *addrlen); #endif #ifdef CONFIG_NET_IPv6 int ipv6_getpeername(FAR struct socket *psock, FAR struct sockaddr *addr, FAR socklen_t *addrlen); #endif /**************************************************************************** * Name: inet_recvfrom * * Description: * Implements the socket recvfrom interface for the case of the AF_INET * and AF_INET6 address families. inet_recvfrom() receives messages from * a socket, and may be used to receive data on a socket whether or not it * is connection-oriented. * * If 'from' is not NULL, and the underlying protocol provides the source * address, this source address is filled in. The argument 'fromlen' is * initialized to the size of the buffer associated with from, and * modified on return to indicate the actual size of the address stored * there. * * Input Parameters: * psock A pointer to a NuttX-specific, internal socket structure * buf Buffer to receive data * len Length of buffer * flags Receive flags * from Address of source (may be NULL) * fromlen The length of the address structure * * Returned Value: * On success, returns the number of characters received. If no data is * available to be received and the peer has performed an orderly shutdown, * recv() will return 0. Otherwise, on errors, a negated errno value is * returned (see recvfrom() for the list of appropriate error values). * ****************************************************************************/ ssize_t inet_recvfrom(FAR struct socket *psock, FAR void *buf, size_t len, int flags, FAR struct sockaddr *from, FAR socklen_t *fromlen); /**************************************************************************** * Name: inet_close * * Description: * Performs the close operation on an AF_INET or AF_INET6 socket instance * * Input Parameters: * psock Socket instance * * Returned Value: * 0 on success; -1 on error with errno set appropriately. * * Assumptions: * ****************************************************************************/ int inet_close(FAR struct socket *psock); #undef EXTERN #if defined(__cplusplus) } #endif #endif /* __NET_INET_INET_H */