355 lines
12 KiB
C
355 lines
12 KiB
C
/****************************************************************************
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* net/inet/inet.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_INET_INET_H
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#define __NET_INET_INET_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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#include <stdint.h>
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#include <nuttx/net/net.h>
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#include <nuttx/net/ip.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration */
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#undef HAVE_INET_SOCKETS
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#undef HAVE_PFINET_SOCKETS
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#undef HAVE_PFINET6_SOCKETS
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#if defined(CONFIG_NET_IPv4) || defined(CONFIG_NET_IPv6)
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# define HAVE_INET_SOCKETS
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# if defined(CONFIG_NET_IPv4)
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# define HAVE_PFINET_SOCKETS
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# endif
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# if defined(CONFIG_NET_IPv6)
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# define HAVE_PFINET6_SOCKETS
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# endif
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#endif
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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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/* Well-known IPv6 addresses */
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#ifdef CONFIG_NET_IPv6
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EXTERN const net_ipv6addr_t g_ipv6_unspecaddr; /* An address of all zeroes */
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EXTERN const net_ipv6addr_t g_ipv6_allnodes; /* All link local nodes */
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#if defined(CONFIG_NET_ICMPv6_AUTOCONF) || defined(CONFIG_NET_ICMPv6_ROUTER) || \
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defined(CONFIG_NET_MLD)
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/* IPv6 Multi-cast IP addresses. See RFC 2375 */
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EXTERN const net_ipv6addr_t g_ipv6_allrouters; /* All link local routers */
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#ifdef CONFIG_NET_ICMPv6_AUTOCONF
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EXTERN const net_ipv6addr_t g_ipv6_llnetmask; /* Netmask for local link address */
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#endif
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#ifdef CONFIG_NET_MLD
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EXTERN const net_ipv6addr_t g_ipv6_allmldv2routers; /* All MLDv2 link local routers */
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#endif
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#ifdef CONFIG_NET_ETHERNET
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/* IPv6 Multi-cast Ethernet addresses. Formed from the 16-bit prefix:
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*
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* 0x33:0x33:xx:xx:xx:xx:
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*
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* and the last 32-bits of the IPv6 IP address
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*/
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EXTERN const struct ether_addr g_ipv6_ethallnodes; /* All link local nodes */
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EXTERN const struct ether_addr g_ipv6_ethallrouters; /* All link local routers */
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#endif /* CONFIG_NET_ETHERNET */
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#endif /* CONFIG_NET_ICMPv6_AUTOCONF || CONFIG_NET_ICMPv6_ROUTER || CONFIG_NET_MLD */
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#endif /* CONFIG_NET_IPv6 */
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#if defined(CONFIG_NET_TCP) && !defined(CONFIG_NET_TCP_NO_STACK)
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struct tcp_conn_s; /* Forward reference */
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#endif
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struct socket; /* Forward reference */
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/****************************************************************************
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* Name: inet_sockif
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*
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* Description:
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* Return the socket interface associated with the inet 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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inet_sockif(sa_family_t family, int type, int protocol);
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/****************************************************************************
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* Name: ipv4_setsockopt and ipv6_setsockopt
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*
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* Description:
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* ipv4/6_setsockopt() sets the IPv4- or IPv6-protocol socket option
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* specified by the 'option' argument to the value pointed to by the
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* 'value' argument for the socket specified by the 'psock' argument.
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*
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* See <netinet/in.h> for the a complete list of values of IPv4 and IPv6
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* protocol socket options.
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*
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* Input Parameters:
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* psock Socket structure of socket to operate on
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* option identifies the option to set
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* value Points to the argument value
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* value_len The length of the argument value
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*
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* Returned Value:
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* Returns zero (OK) on success. On failure, it returns a negated errno
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* value to indicate the nature of the error. See psock_setcockopt() for
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* the list of possible error values.
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*
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****************************************************************************/
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#ifdef CONFIG_NET_IPv4
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int ipv4_setsockopt(FAR struct socket *psock, int option,
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FAR const void *value, socklen_t value_len);
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#endif
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#ifdef CONFIG_NET_IPv6
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int ipv6_setsockopt(FAR struct socket *psock, int option,
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FAR const void *value, socklen_t value_len);
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#endif
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/****************************************************************************
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* Name: ipv4_getsockopt
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*
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* Description:
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* ipv4_getsockopt() retrieve the value for the option specified by the
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* 'option' argument for the socket specified by the 'psock' argument. If
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* the size of the option value is greater than 'value_len', the value
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* stored in the object pointed to by the 'value' argument will be silently
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* truncated. Otherwise, the length pointed to by the 'value_len' argument
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* will be modified to indicate the actual length of the 'value'.
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*
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* See <netinet/in.h> for the a complete list of values of IPv4 protocol
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* socket options.
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*
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* Input Parameters:
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* psock Socket structure of the socket to query
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* option identifies the option to get
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* value Points to the argument value
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* value_len The length of the argument value
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*
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* Returned Value:
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* Returns zero (OK) on success. On failure, it returns a negated errno
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* value to indicate the nature of the error. See psock_getsockopt() for
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* the list of possible error values.
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*
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****************************************************************************/
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#ifdef CONFIG_NET_IPv4
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int ipv4_getsockopt(FAR struct socket *psock, int option,
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FAR void *value, FAR socklen_t *value_len);
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#endif
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#ifdef CONFIG_NET_IPv6
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int ipv6_getsockopt(FAR struct socket *psock, int option,
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FAR void *value, FAR socklen_t *value_len);
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#endif
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/****************************************************************************
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* Name: ipv4_getsockname and ipv6_sockname
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*
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* Description:
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* The ipv4_getsockname() and ipv6_getsockname() function retrieve the
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* locally-bound name of the specified INET socket.
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*
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* Input Parameters:
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* psock Point to the socket structure instance [in]
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* addr sockaddr structure to receive data [out]
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* addrlen Length of sockaddr structure [in/out]
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*
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* Returned Value:
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* On success, 0 is returned, the 'addr' argument points to the address
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* of the socket, and the 'addrlen' argument points to the length of the
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* address. Otherwise, a negated errno value is returned. See
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* getsockname() for the list of returned error values.
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*
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****************************************************************************/
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#ifdef CONFIG_NET_IPv4
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int ipv4_getsockname(FAR struct socket *psock, FAR struct sockaddr *addr,
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FAR socklen_t *addrlen);
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#endif
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#ifdef CONFIG_NET_IPv6
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int ipv6_getsockname(FAR struct socket *psock, FAR struct sockaddr *addr,
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FAR socklen_t *addrlen);
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#endif
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/****************************************************************************
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* Name: ipv4_getpeername and ipv6_peername
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*
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* Description:
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* The ipv4_getpeername() and ipv6_peername() function retrieve the
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* remote-connected name of the specified INET socket.
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*
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* Parameters:
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* psock Point to the socket structure instance [in]
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* addr sockaddr structure to receive data [out]
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* addrlen Length of sockaddr structure [in/out]
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*
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* Returned Value:
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* On success, 0 is returned, the 'addr' argument points to the address
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* of the socket, and the 'addrlen' argument points to the length of the
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* address. Otherwise, a negated errno value is returned. See
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* getpeername() for the list of returned error values.
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*
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****************************************************************************/
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#ifdef CONFIG_NET_IPv4
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int ipv4_getpeername(FAR struct socket *psock, FAR struct sockaddr *addr,
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FAR socklen_t *addrlen);
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#endif
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#ifdef CONFIG_NET_IPv6
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int ipv6_getpeername(FAR struct socket *psock, FAR struct sockaddr *addr,
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FAR socklen_t *addrlen);
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#endif
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/****************************************************************************
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* Name: inet_close
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*
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* Description:
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* Performs the close operation on an AF_INET or AF_INET6 socket instance
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*
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* Input Parameters:
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* psock Socket instance
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*
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* Returned Value:
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* 0 on success; -1 on error with errno set appropriately.
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*
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* Assumptions:
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*
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****************************************************************************/
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int inet_close(FAR struct socket *psock);
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/****************************************************************************
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* Name: inet_txdrain
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*
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* Description:
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* Wait for any buffered Tx data to be sent from the socket.
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*
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* Parameters:
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* psock - Pointer to the socket structure instance
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* timeout - The relative time when the timeout will occur
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*
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* Returned Value:
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* Zero (OK) is returned on success; a negated error value is returned on
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* any failure.
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*
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****************************************************************************/
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int inet_txdrain(FAR struct socket *psock, unsigned int timeout);
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/****************************************************************************
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* Name: ipv4_build_header
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*
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* Description:
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* build IPv4 header
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*
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* Input Parameters:
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* ipv4 Pointer to IPv4 header's buffer
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* total_len total length of the IPv4 packet
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* prot the next level protocol used in IPv4 packet
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* src_ip Source IPv4 address
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* dst_ip Destination IPv4 address
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* ttl Time to live(IPv4)
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* tos Type of Service(IPv4)
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* opt IPv4 options
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*
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* Returned Value:
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* length of IPv4 header
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*
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****************************************************************************/
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#ifdef CONFIG_NET_IPv4
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uint16_t ipv4_build_header(FAR struct ipv4_hdr_s *ipv4, uint16_t total_len,
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uint16_t prot, FAR const in_addr_t *src_ip,
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FAR const in_addr_t *dst_ip, uint8_t ttl,
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uint8_t tos, FAR struct ipv4_opt_s *opt);
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#endif
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/****************************************************************************
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* Name: ipv6_build_header
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*
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* Description:
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* build IPv6 header
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*
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* Input Parameters:
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* ipv6 Pointer to IPv6 header's buffer
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* payload_len Length of the IPv6 payload(without IPv6 header length)
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* prot Type of header immediately following the IPv6 header
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* src_ip Source IPv6 address
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* dst_ip Destination IPv6 address
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* ttl hop limit(IPv6)
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* tclass traffic class(IPv6)
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*
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* Returned Value:
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* length of IPv6 header
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*
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****************************************************************************/
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#ifdef CONFIG_NET_IPv6
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uint16_t ipv6_build_header(FAR struct ipv6_hdr_s *ipv6, uint16_t payload_len,
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uint16_t prot, const net_ipv6addr_t src_ip,
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const net_ipv6addr_t dst_ip, uint8_t ttl,
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uint8_t tclass);
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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 /* __NET_INET_INET_H */
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