git.joshuawise.com / netwatch.git / blame
| Commit | Line | Data |
|---|---|---|
| 6e6d4a8b JP |
1 | /* |
| 2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without modification, | |
| 6 | * are permitted provided that the following conditions are met: | |
| 7 | * | |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, | |
| 9 | * this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 11 | * this list of conditions and the following disclaimer in the documentation | |
| 12 | * and/or other materials provided with the distribution. | |
| 13 | * 3. The name of the author may not be used to endorse or promote products | |
| 14 | * derived from this software without specific prior written permission. | |
| 15 | * | |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT | |
| 19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT | |
| 21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
| 24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY | |
| 25 | * OF SUCH DAMAGE. | |
| 26 | * | |
| 27 | * This file is part of the lwIP TCP/IP stack. | |
| 28 | * | |
| 29 | * Author: Adam Dunkels <adam@sics.se> | |
| 30 | * | |
| 31 | */ | |
| 32 | #ifndef __LWIP_NETBUF_H__ | |
| 33 | #define __LWIP_NETBUF_H__ | |
| 34 | ||
| 35 | #include "lwip/opt.h" | |
| 36 | #include "lwip/pbuf.h" | |
| 37 | ||
| 38 | #ifdef __cplusplus | |
| 39 | extern "C" { | |
| 40 | #endif | |
| 41 | ||
| 42 | struct netbuf { | |
| 43 | struct pbuf *p, *ptr; | |
| 44 | struct ip_addr *addr; | |
| 45 | u16_t port; | |
| 46 | }; | |
| 47 | ||
| 48 | /* Network buffer functions: */ | |
| 49 | struct netbuf * netbuf_new (void); | |
| 50 | void netbuf_delete (struct netbuf *buf); | |
| 51 | void * netbuf_alloc (struct netbuf *buf, u16_t size); | |
| 52 | void netbuf_free (struct netbuf *buf); | |
| 53 | err_t netbuf_ref (struct netbuf *buf, | |
| 54 | const void *dataptr, u16_t size); | |
| 55 | void netbuf_chain (struct netbuf *head, | |
| 56 | struct netbuf *tail); | |
| 57 | ||
| 58 | u16_t netbuf_len (struct netbuf *buf); | |
| 59 | err_t netbuf_data (struct netbuf *buf, | |
| 60 | void **dataptr, u16_t *len); | |
| 61 | s8_t netbuf_next (struct netbuf *buf); | |
| 62 | void netbuf_first (struct netbuf *buf); | |
| 63 | ||
| 64 | ||
| 65 | #define netbuf_copy_partial(buf, dataptr, len, offset) \ | |
| 66 | pbuf_copy_partial((buf)->p, (dataptr), (len), (offset)) | |
| 67 | #define netbuf_copy(buf,dataptr,len) netbuf_copy_partial(buf, dataptr, len, 0) | |
| 68 | #define netbuf_len(buf) ((buf)->p->tot_len) | |
| 69 | #define netbuf_fromaddr(buf) ((buf)->addr) | |
| 70 | #define netbuf_fromport(buf) ((buf)->port) | |
| 71 | ||
| 72 | #ifdef __cplusplus | |
| 73 | } | |
| 74 | #endif | |
| 75 | ||
| 76 | #endif /* __LWIP_NETBUF_H__ */ |