forked from xuos/xiuos
modify nuttx bug of lack of files
This commit is contained in:
TangYiwen123
@@ -0,0 +1,251 @@
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/****************************************************************************
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* net/tcp/tcp_setsockopt.c
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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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/time.h>
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#include <stdint.h>
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#include <errno.h>
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#include <assert.h>
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#include <debug.h>
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#include <netinet/tcp.h>
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#include <nuttx/net/net.h>
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#include <nuttx/net/tcp.h>
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#include "socket/socket.h"
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#include "utils/utils.h"
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#include "tcp/tcp.h"
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#ifdef CONFIG_NET_TCPPROTO_OPTIONS
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: tcp_setsockopt
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*
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* Description:
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* tcp_setsockopt() sets the TCP-protocol option specified by the
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* 'option' argument to the value pointed to by the 'value' argument for
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* the socket specified by the 'psock' argument.
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*
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* See <netinet/tcp.h> for the a complete list of values of TCP protocol
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* 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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int tcp_setsockopt(FAR struct socket *psock, int option,
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FAR const void *value, socklen_t value_len)
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{
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#ifdef CONFIG_NET_TCP_KEEPALIVE
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/* Keep alive options are the only TCP protocol socket option currently
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* supported.
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*/
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FAR struct tcp_conn_s *conn;
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int ret;
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DEBUGASSERT(psock != NULL && value != NULL && psock->s_conn != NULL);
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conn = (FAR struct tcp_conn_s *)psock->s_conn;
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/* All of the TCP protocol options apply only TCP sockets. The sockets
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* do not have to be connected.. that might occur later with the KeepAlive
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* already configured.
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*/
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if (psock->s_type != SOCK_STREAM)
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{
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nerr("ERROR: Not a TCP socket\n");
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return -ENOTCONN;
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}
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/* Handle the Keep-Alive option */
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switch (option)
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{
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/* Handle the SO_KEEPALIVE socket-level option.
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*
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* NOTE: SO_KEEPALIVE is not really a socket-level option; it is a
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* protocol-level option. A given TCP connection may service multiple
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* sockets (via dup'ing of the socket). There is, however, still only
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* one connection to be monitored and that is a global attribute across
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* all of the clones that may use the underlying connection.
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*/
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case SO_KEEPALIVE: /* Verifies TCP connections active by enabling the
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* periodic transmission of probes */
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if (value_len != sizeof(int))
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{
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ret = -EDOM;
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}
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else
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{
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int keepalive = *(FAR int *)value;
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if (keepalive != 0 && keepalive != 1)
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{
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nerr("ERROR: SO_KEEPALIVE value out of range: %d\n",
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keepalive);
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return -EDOM;
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}
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else
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{
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conn->keepalive = (bool)keepalive;
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conn->keeptime = clock_systime_ticks(); /* Reset start time */
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ret = OK;
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}
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}
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break;
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case TCP_NODELAY: /* Avoid coalescing of small segments. */
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nerr("ERROR: TCP_NODELAY not supported\n");
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ret = -ENOSYS;
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break;
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case TCP_KEEPIDLE: /* Start keepalives after this IDLE period */
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if (value_len != sizeof(struct timeval))
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{
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ret = -EDOM;
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}
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else
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{
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FAR struct timeval *tv = (FAR struct timeval *)value;
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if (tv == NULL)
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{
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ret = -EINVAL;
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}
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else
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{
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unsigned int dsecs;
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/* Get the IDLE time value. Any microsecond remainder will
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* be forced to the next larger, whole decisecond value.
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*/
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dsecs = (socktimeo_t)net_timeval2dsec(tv, TV2DS_CEIL);
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if (dsecs > UINT16_MAX)
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{
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nwarn("WARNING: TCP_KEEPIDLE value out of range: %u\n",
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dsecs);
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ret = -EDOM;
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}
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else
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{
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conn->keepidle = (uint16_t)dsecs;
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conn->keeptime = clock_systime_ticks(); /* Reset start time */
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ret = OK;
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}
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}
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}
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break;
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case TCP_KEEPINTVL: /* Interval between keepalives */
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if (value_len != sizeof(struct timeval))
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{
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ret = -EDOM;
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}
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else
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{
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FAR struct timeval *tv = (FAR struct timeval *)value;
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if (tv == NULL)
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{
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ret = -EINVAL;
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}
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else
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{
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unsigned int dsecs;
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/* Get the IDLE time value. Any microsecond remainder will
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* be forced to the next larger, whole decisecond value.
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*/
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dsecs = (socktimeo_t)net_timeval2dsec(tv, TV2DS_CEIL);
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if (dsecs > UINT16_MAX)
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{
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nwarn("WARNING: TCP_KEEPINTVL value out of range: %u\n",
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dsecs);
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ret = -EDOM;
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}
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else
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{
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conn->keepintvl = (uint16_t)dsecs;
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conn->keeptime = clock_systime_ticks(); /* Reset start time */
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ret = OK;
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}
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}
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}
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break;
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case TCP_KEEPCNT: /* Number of keepalives before death */
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if (value_len != sizeof(int))
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{
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ret = -EDOM;
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}
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else
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{
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int keepcnt = *(FAR int *)value;
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if (keepcnt < 0 || keepcnt > UINT8_MAX)
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{
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nerr("ERROR: TCP_KEEPCNT value out of range: %d\n", keepcnt);
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return -EDOM;
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}
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else
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{
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conn->keepcnt = (uint8_t)keepcnt;
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conn->keeptime = clock_systime_ticks(); /* Reset start time */
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ret = OK;
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}
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}
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break;
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default:
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nerr("ERROR: Unrecognized TCP option: %d\n", option);
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ret = -ENOPROTOOPT;
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break;
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}
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return ret;
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#else
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return -ENOPROTOOPT;
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#endif /* CONFIG_NET_TCP_KEEPALIVE */
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}
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#endif /* CONFIG_NET_TCPPROTO_OPTIONS */
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