| /**************************************************************************** |
| * include/netinet/tcp.h |
| * |
| * Copyright (C) 2017-2018 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. |
| * |
| ****************************************************************************/ |
| |
| #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 */ |
