incubator-nuttx/include/netinet/tcp.h

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/****************************************************************************
* include/netinet/tcp.h
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 __INCLUDE_NETINET_TCP_H
#define __INCLUDE_NETINET_TCP_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/socket.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Per OpenGroup.org:
*
* "The netinet/tcp.h header shall define the following macro for use as a
* socket option at the IPPROTO_TCP level:" -- OpenGroup.org
*/
#define TCP_NODELAY (__SO_PROTOCOL + 0) /* Avoid coalescing of small segments. */
/* "The macro shall be defined in the header. The implementation need not
* allow the value of the option to be set via setsockopt() or retrieved
* via getsockopt()."
*/
/* Additional TCP protocol socket operations not specified at OpenGroup.org */
/* TCP protocol socket operations needed to support TCP Keep-Alive: */
#define TCP_KEEPIDLE (__SO_PROTOCOL + 1) /* Start keeplives after this IDLE period
* Argument: struct timeval */
#define TCP_KEEPINTVL (__SO_PROTOCOL + 2) /* Interval between keepalives
* Argument: struct timeval */
#define TCP_KEEPCNT (__SO_PROTOCOL + 3) /* Number of keepalives before death
* Argument: max retry count */
#define TCP_MAXSEG (__SO_PROTOCOL + 4) /* The maximum segment size */
#endif /* __INCLUDE_NETINET_TCP_H */