c65e1aa3df
syscalls/: Add syscall support for if_nametoindex() and if_indextoname()
net/: Update some comments.
142 lines
4.9 KiB
C
142 lines
4.9 KiB
C
/****************************************************************************
|
|
* net/udp/udp_setsockopt.c
|
|
*
|
|
* Copyright (C) 2018 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/time.h>
|
|
#include <stdint.h>
|
|
#include <errno.h>
|
|
#include <assert.h>
|
|
#include <debug.h>
|
|
|
|
#include <netinet/udp.h>
|
|
|
|
#include <nuttx/clock.h>
|
|
#include <nuttx/net/net.h>
|
|
#include <nuttx/net/udp.h>
|
|
|
|
#include "socket/socket.h"
|
|
#include "utils/utils.h"
|
|
#include "udp/udp.h"
|
|
|
|
#ifdef CONFIG_NET_UDPPROTO_OPTIONS
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: udp_setsockopt
|
|
*
|
|
* Description:
|
|
* udp_setsockopt() sets the UDP-protocol 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/udp.h> for the a complete list of values of UDP protocol
|
|
* 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int udp_setsockopt(FAR struct socket *psock, int option,
|
|
FAR const void *value, socklen_t value_len)
|
|
{
|
|
#ifdef CONFIG_NET_UDP_BINDTODEVICE
|
|
/* Keep alive options are the only UDP protocol socket option currently
|
|
* supported.
|
|
*/
|
|
|
|
FAR struct udp_conn_s *conn;
|
|
int ret;
|
|
|
|
DEBUGASSERT(psock != NULL && value != NULL && psock->s_conn != NULL);
|
|
conn = (FAR struct udp_conn_s *)psock->s_conn;
|
|
|
|
/* All of the UDP protocol options apply only UDP sockets. The sockets
|
|
* do not have to be connected.. that might occur later with the KeepAlive
|
|
* already configured.
|
|
*/
|
|
|
|
if (psock->s_type != SOCK_STREAM)
|
|
{
|
|
nerr("ERROR: Not a UDP socket\n");
|
|
return -ENOTCONN;
|
|
}
|
|
|
|
/* Handle the Keep-Alive option */
|
|
|
|
switch (option)
|
|
{
|
|
/* Handle the SO_KEEPALIVE socket-level option.
|
|
*
|
|
* NOTE: SO_KEEPALIVE is not really a socket-level option; it is a
|
|
* protocol-level option. A given UDP connection may service multiple
|
|
* sockets (via dup'ing of the socket). There is, however, still only
|
|
* one connection to be monitored and that is a global attribute across
|
|
* all of the clones that may use the underlying connection.
|
|
*/
|
|
|
|
case UDP_BINDTODEVICE: /* Bind socket to a specific network device */
|
|
break;
|
|
|
|
default:
|
|
nerr("ERROR: Unrecognized UDP option: %d\n", option);
|
|
ret = -ENOPROTOOPT;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
#else
|
|
return -ENOPROTOOPT;
|
|
#endif /* CONFIG_NET_UDP_BINDTODEVICE */
|
|
}
|
|
|
|
#endif /* CONFIG_NET_UDPPROTO_OPTIONS */
|