1 /** 2 * @file 3 * Sockets API internal implementations (do not use in application code) 4 */ 5 6 /* 7 * Copyright (c) 2017 Joel Cunningham, Garmin International, Inc. <joel.cunningham@garmin.com> 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without modification, 11 * are permitted provided that the following conditions are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright notice, 14 * this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 24 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 30 * OF SUCH DAMAGE. 31 * 32 * This file is part of the lwIP TCP/IP stack. 33 * 34 * Author: Joel Cunningham <joel.cunningham@me.com> 35 * 36 */ 37 #ifndef LWIP_HDR_SOCKETS_PRIV_H 38 #define LWIP_HDR_SOCKETS_PRIV_H 39 40 #include "lwip/opt.h" 41 42 #if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ 43 44 #include "lwip/err.h" 45 #include "lwip/sockets.h" 46 47 #ifdef __cplusplus 48 extern "C" { 49 #endif 50 51 #if LWIP_SOCKET_SET_ERRNO 52 #ifndef set_errno 53 #define set_errno(err) do { if (err) { errno = (err); } } while(0) 54 #endif 55 #else /* LWIP_SOCKET_SET_ERRNO */ 56 #define set_errno(err) 57 #endif /* LWIP_SOCKET_SET_ERRNO */ 58 59 #if !LWIP_TCPIP_CORE_LOCKING 60 /** Maximum optlen used by setsockopt/getsockopt */ 61 #define LWIP_SETGETSOCKOPT_MAXOPTLEN 16 62 63 /** This struct is used to pass data to the set/getsockopt_internal 64 * functions running in tcpip_thread context (only a void* is allowed) */ 65 struct lwip_setgetsockopt_data { 66 /** socket index for which to change options */ 67 int s; 68 /** level of the option to process */ 69 int level; 70 /** name of the option to process */ 71 int optname; 72 /** set: value to set the option to 73 * get: value of the option is stored here */ 74 #if LWIP_MPU_COMPATIBLE 75 u8_t optval[LWIP_SETGETSOCKOPT_MAXOPTLEN]; 76 #else 77 union { 78 void *p; 79 const void *pc; 80 } optval; 81 #endif 82 /** size of *optval */ 83 socklen_t optlen; 84 /** if an error occurs, it is temporarily stored here */ 85 int err; 86 /** semaphore to wake up the calling task */ 87 void* completed_sem; 88 }; 89 #endif /* !LWIP_TCPIP_CORE_LOCKING */ 90 91 #ifdef __cplusplus 92 } 93 #endif 94 95 #endif /* LWIP_SOCKET */ 96 97 #endif /* LWIP_HDR_SOCKETS_PRIV_H */ 98