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incubator-nuttx/net/inet/inet.h

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/****************************************************************************
* net/inet/inet.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __NET_INET_INET_H
#define __NET_INET_INET_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <nuttx/net/net.h>
#include <nuttx/net/ip.h>
/****************************************************************************
* 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
/* 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_loopback; /* An address of loopback */
EXTERN const net_ipv6addr_t g_ipv6_allnodes; /* All link local nodes */
#if defined(CONFIG_NET_ICMPv6_AUTOCONF) || defined(CONFIG_NET_ICMPv6_ROUTER) || \
defined(CONFIG_NET_MLD)
/* IPv6 Multi-cast IP addresses. See RFC 2375 */
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
#ifdef CONFIG_NET_MLD
EXTERN const net_ipv6addr_t g_ipv6_allmldv2routers; /* All MLDv2 link local routers */
#endif
#ifdef CONFIG_NET_ETHERNET
/* IPv6 Multi-cast Ethernet addresses. Formed from the 16-bit prefix:
*
* 0x33:0x33:xx:xx:xx:xx:
*
* and the last 32-bits of the IPv6 IP address
*/
EXTERN const struct ether_addr g_ipv6_ethallnodes; /* All link local nodes */
EXTERN const struct ether_addr g_ipv6_ethallrouters; /* All link local routers */
#endif /* CONFIG_NET_ETHERNET */
#endif /* CONFIG_NET_ICMPv6_AUTOCONF || CONFIG_NET_ICMPv6_ROUTER || CONFIG_NET_MLD */
#endif /* CONFIG_NET_IPv6 */
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
struct socket; /* Forward reference */
/****************************************************************************
* 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_setsockopt and ipv6_setsockopt
*
* Description:
* ipv4/6_setsockopt() sets the IPv4- or IPv6-protocol socket option
* specified by the 'option' argument to the value pointed to by the
* 'value' argument for the socket specified by the 'psock' argument.
*
* See <netinet/in.h> for the a complete list of values of IPv4 and IPv6
* protocol socket options.
*
* Input Parameters:
* psock Socket structure of socket to operate on
* option identifies the option to set
* value Points to the argument value
* value_len The length of the argument value
*
* Returned Value:
* Returns zero (OK) on success. On failure, it returns a negated errno
* value to indicate the nature of the error. See psock_setcockopt() for
* the list of possible error values.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv4
int ipv4_setsockopt(FAR struct socket *psock, int option,
FAR const void *value, socklen_t value_len);
#endif
#ifdef CONFIG_NET_IPv6
int ipv6_setsockopt(FAR struct socket *psock, int option,
FAR const void *value, socklen_t value_len);
#endif
/****************************************************************************
* Name: ipv4_getsockopt
*
* Description:
* ipv4_getsockopt() retrieve the value for the option specified by the
* 'option' argument for the socket specified by the 'psock' argument. If
* the size of the option value is greater than 'value_len', the value
* stored in the object pointed to by the 'value' argument will be silently
* truncated. Otherwise, the length pointed to by the 'value_len' argument
* will be modified to indicate the actual length of the 'value'.
*
* See <netinet/in.h> for the a complete list of values of IPv4 protocol
* socket options.
*
* Input Parameters:
* psock Socket structure of the socket to query
* option identifies the option to get
* value Points to the argument value
* value_len The length of the argument value
*
* Returned Value:
* Returns zero (OK) on success. On failure, it returns a negated errno
* value to indicate the nature of the error. See psock_getsockopt() for
* the list of possible error values.
*
****************************************************************************/
#ifdef CONFIG_NET_IPv4
int ipv4_getsockopt(FAR struct socket *psock, int option,
FAR void *value, FAR socklen_t *value_len);
#endif
#ifdef CONFIG_NET_IPv6
int ipv6_getsockopt(FAR struct socket *psock, int option,
FAR void *value, FAR socklen_t *value_len);
#endif
/****************************************************************************
* Name: ipv4_getsockname and ipv6_sockname
*
* Description:
* The ipv4_getsockname() and ipv6_getsockname() 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_peername() 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_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);
/****************************************************************************
* Name: inet_txdrain
*
* Description:
* Wait for any buffered Tx data to be sent from the socket.
*
* Parameters:
* psock - Pointer to the socket structure instance
* timeout - The relative time when the timeout will occur
*
* Returned Value:
* Zero (OK) is returned on success; a negated error value is returned on
* any failure.
*
****************************************************************************/
int inet_txdrain(FAR struct socket *psock, unsigned int timeout);
/****************************************************************************
* Name: ipv4_build_header
*
* Description:
* build IPv4 header
*
* Input Parameters:
* ipv4 Pointer to IPv4 header's buffer
* total_len total length of the IPv4 packet
* prot the next level protocol used in IPv4 packet
* src_ip Source IPv4 address
* dst_ip Destination IPv4 address
* ttl Time to live(IPv4)
* tos Type of Service(IPv4)
* opt IPv4 options
*
* Returned Value:
* length of IPv4 header
*
****************************************************************************/
#ifdef CONFIG_NET_IPv4
uint16_t ipv4_build_header(FAR struct ipv4_hdr_s *ipv4, uint16_t total_len,
uint16_t prot, FAR const in_addr_t *src_ip,
FAR const in_addr_t *dst_ip, uint8_t ttl,
uint8_t tos, FAR struct ipv4_opt_s *opt);
#endif
/****************************************************************************
* Name: ipv6_build_header
*
* Description:
* build IPv6 header
*
* Input Parameters:
* ipv6 Pointer to IPv6 header's buffer
* payload_len Length of the IPv6 payload(without IPv6 header length)
* prot Type of header immediately following the IPv6 header
* src_ip Source IPv6 address
* dst_ip Destination IPv6 address
* ttl hop limit(IPv6)
* tclass traffic class(IPv6)
*
* Returned Value:
* length of IPv6 header
*
****************************************************************************/
#ifdef CONFIG_NET_IPv6
uint16_t ipv6_build_header(FAR struct ipv6_hdr_s *ipv6, uint16_t payload_len,
uint16_t prot, const net_ipv6addr_t src_ip,
const net_ipv6addr_t dst_ip, uint8_t ttl,
uint8_t tclass);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __NET_INET_INET_H */
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