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EthernetNetIf/LPC2368/lwip/include/lwip/netbuf.h@0:10bcaa7c2253, 2010-10-26 (annotated)
- Committer:
- okini3939
- Date:
- Tue Oct 26 17:19:28 2010 +0000
- Revision:
- 0:10bcaa7c2253
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| okini3939 | 0:10bcaa7c2253 | 1 | /* |
| okini3939 | 0:10bcaa7c2253 | 2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
| okini3939 | 0:10bcaa7c2253 | 3 | * All rights reserved. |
| okini3939 | 0:10bcaa7c2253 | 4 | * |
| okini3939 | 0:10bcaa7c2253 | 5 | * Redistribution and use in source and binary forms, with or without modification, |
| okini3939 | 0:10bcaa7c2253 | 6 | * are permitted provided that the following conditions are met: |
| okini3939 | 0:10bcaa7c2253 | 7 | * |
| okini3939 | 0:10bcaa7c2253 | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| okini3939 | 0:10bcaa7c2253 | 9 | * this list of conditions and the following disclaimer. |
| okini3939 | 0:10bcaa7c2253 | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| okini3939 | 0:10bcaa7c2253 | 11 | * this list of conditions and the following disclaimer in the documentation |
| okini3939 | 0:10bcaa7c2253 | 12 | * and/or other materials provided with the distribution. |
| okini3939 | 0:10bcaa7c2253 | 13 | * 3. The name of the author may not be used to endorse or promote products |
| okini3939 | 0:10bcaa7c2253 | 14 | * derived from this software without specific prior written permission. |
| okini3939 | 0:10bcaa7c2253 | 15 | * |
| okini3939 | 0:10bcaa7c2253 | 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| okini3939 | 0:10bcaa7c2253 | 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| okini3939 | 0:10bcaa7c2253 | 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| okini3939 | 0:10bcaa7c2253 | 19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| okini3939 | 0:10bcaa7c2253 | 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| okini3939 | 0:10bcaa7c2253 | 21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| okini3939 | 0:10bcaa7c2253 | 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| okini3939 | 0:10bcaa7c2253 | 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| okini3939 | 0:10bcaa7c2253 | 24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
| okini3939 | 0:10bcaa7c2253 | 25 | * OF SUCH DAMAGE. |
| okini3939 | 0:10bcaa7c2253 | 26 | * |
| okini3939 | 0:10bcaa7c2253 | 27 | * This file is part of the lwIP TCP/IP stack. |
| okini3939 | 0:10bcaa7c2253 | 28 | * |
| okini3939 | 0:10bcaa7c2253 | 29 | * Author: Adam Dunkels <adam@sics.se> |
| okini3939 | 0:10bcaa7c2253 | 30 | * |
| okini3939 | 0:10bcaa7c2253 | 31 | */ |
| okini3939 | 0:10bcaa7c2253 | 32 | #ifndef __LWIP_NETBUF_H__ |
| okini3939 | 0:10bcaa7c2253 | 33 | #define __LWIP_NETBUF_H__ |
| okini3939 | 0:10bcaa7c2253 | 34 | |
| okini3939 | 0:10bcaa7c2253 | 35 | #include "lwip/opt.h" |
| okini3939 | 0:10bcaa7c2253 | 36 | #include "lwip/pbuf.h" |
| okini3939 | 0:10bcaa7c2253 | 37 | #include "lwip/ip_addr.h" |
| okini3939 | 0:10bcaa7c2253 | 38 | |
| okini3939 | 0:10bcaa7c2253 | 39 | #ifdef __cplusplus |
| okini3939 | 0:10bcaa7c2253 | 40 | extern "C" { |
| okini3939 | 0:10bcaa7c2253 | 41 | #endif |
| okini3939 | 0:10bcaa7c2253 | 42 | |
| okini3939 | 0:10bcaa7c2253 | 43 | /** This netbuf has dest-addr/port set */ |
| okini3939 | 0:10bcaa7c2253 | 44 | #define NETBUF_FLAG_DESTADDR 0x01 |
| okini3939 | 0:10bcaa7c2253 | 45 | /** This netbuf includes a checksum */ |
| okini3939 | 0:10bcaa7c2253 | 46 | #define NETBUF_FLAG_CHKSUM 0x02 |
| okini3939 | 0:10bcaa7c2253 | 47 | |
| okini3939 | 0:10bcaa7c2253 | 48 | struct netbuf { |
| okini3939 | 0:10bcaa7c2253 | 49 | struct pbuf *p, *ptr; |
| okini3939 | 0:10bcaa7c2253 | 50 | ip_addr_t addr; |
| okini3939 | 0:10bcaa7c2253 | 51 | u16_t port; |
| okini3939 | 0:10bcaa7c2253 | 52 | #if LWIP_NETBUF_RECVINFO || LWIP_CHECKSUM_ON_COPY |
| okini3939 | 0:10bcaa7c2253 | 53 | #if LWIP_CHECKSUM_ON_COPY |
| okini3939 | 0:10bcaa7c2253 | 54 | u8_t flags; |
| okini3939 | 0:10bcaa7c2253 | 55 | #endif /* LWIP_CHECKSUM_ON_COPY */ |
| okini3939 | 0:10bcaa7c2253 | 56 | u16_t toport_chksum; |
| okini3939 | 0:10bcaa7c2253 | 57 | #if LWIP_NETBUF_RECVINFO |
| okini3939 | 0:10bcaa7c2253 | 58 | ip_addr_t toaddr; |
| okini3939 | 0:10bcaa7c2253 | 59 | #endif /* LWIP_NETBUF_RECVINFO */ |
| okini3939 | 0:10bcaa7c2253 | 60 | #endif /* LWIP_NETBUF_RECVINFO || LWIP_CHECKSUM_ON_COPY */ |
| okini3939 | 0:10bcaa7c2253 | 61 | }; |
| okini3939 | 0:10bcaa7c2253 | 62 | |
| okini3939 | 0:10bcaa7c2253 | 63 | /* Network buffer functions: */ |
| okini3939 | 0:10bcaa7c2253 | 64 | struct netbuf * netbuf_new (void); |
| okini3939 | 0:10bcaa7c2253 | 65 | void netbuf_delete (struct netbuf *buf); |
| okini3939 | 0:10bcaa7c2253 | 66 | void * netbuf_alloc (struct netbuf *buf, u16_t size); |
| okini3939 | 0:10bcaa7c2253 | 67 | void netbuf_free (struct netbuf *buf); |
| okini3939 | 0:10bcaa7c2253 | 68 | err_t netbuf_ref (struct netbuf *buf, |
| okini3939 | 0:10bcaa7c2253 | 69 | const void *dataptr, u16_t size); |
| okini3939 | 0:10bcaa7c2253 | 70 | void netbuf_chain (struct netbuf *head, |
| okini3939 | 0:10bcaa7c2253 | 71 | struct netbuf *tail); |
| okini3939 | 0:10bcaa7c2253 | 72 | |
| okini3939 | 0:10bcaa7c2253 | 73 | err_t netbuf_data (struct netbuf *buf, |
| okini3939 | 0:10bcaa7c2253 | 74 | void **dataptr, u16_t *len); |
| okini3939 | 0:10bcaa7c2253 | 75 | s8_t netbuf_next (struct netbuf *buf); |
| okini3939 | 0:10bcaa7c2253 | 76 | void netbuf_first (struct netbuf *buf); |
| okini3939 | 0:10bcaa7c2253 | 77 | |
| okini3939 | 0:10bcaa7c2253 | 78 | |
| okini3939 | 0:10bcaa7c2253 | 79 | #define netbuf_copy_partial(buf, dataptr, len, offset) \ |
| okini3939 | 0:10bcaa7c2253 | 80 | pbuf_copy_partial((buf)->p, (dataptr), (len), (offset)) |
| okini3939 | 0:10bcaa7c2253 | 81 | #define netbuf_copy(buf,dataptr,len) netbuf_copy_partial(buf, dataptr, len, 0) |
| okini3939 | 0:10bcaa7c2253 | 82 | #define netbuf_take(buf, dataptr, len) pbuf_take((buf)->p, dataptr, len) |
| okini3939 | 0:10bcaa7c2253 | 83 | #define netbuf_len(buf) ((buf)->p->tot_len) |
| okini3939 | 0:10bcaa7c2253 | 84 | #define netbuf_fromaddr(buf) (&((buf)->addr)) |
| okini3939 | 0:10bcaa7c2253 | 85 | #define netbuf_set_fromaddr(buf, fromaddr) ip_addr_set((&(buf)->addr), fromaddr) |
| okini3939 | 0:10bcaa7c2253 | 86 | #define netbuf_fromport(buf) ((buf)->port) |
| okini3939 | 0:10bcaa7c2253 | 87 | #if LWIP_NETBUF_RECVINFO |
| okini3939 | 0:10bcaa7c2253 | 88 | #define netbuf_destaddr(buf) (&((buf)->toaddr)) |
| okini3939 | 0:10bcaa7c2253 | 89 | #define netbuf_set_destaddr(buf, destaddr) ip_addr_set((&(buf)->addr), destaddr) |
| okini3939 | 0:10bcaa7c2253 | 90 | #define netbuf_destport(buf) (((buf)->flags & NETBUF_FLAG_DESTADDR) ? (buf)->toport_chksum : 0) |
| okini3939 | 0:10bcaa7c2253 | 91 | #endif /* LWIP_NETBUF_RECVINFO */ |
| okini3939 | 0:10bcaa7c2253 | 92 | #if LWIP_CHECKSUM_ON_COPY |
| okini3939 | 0:10bcaa7c2253 | 93 | #define netbuf_set_chksum(buf, chksum) do { (buf)->flags = NETBUF_FLAG_CHKSUM; \ |
| okini3939 | 0:10bcaa7c2253 | 94 | (buf)->toport_chksum = chksum; } while(0) |
| okini3939 | 0:10bcaa7c2253 | 95 | #endif /* LWIP_CHECKSUM_ON_COPY */ |
| okini3939 | 0:10bcaa7c2253 | 96 | |
| okini3939 | 0:10bcaa7c2253 | 97 | #ifdef __cplusplus |
| okini3939 | 0:10bcaa7c2253 | 98 | } |
| okini3939 | 0:10bcaa7c2253 | 99 | #endif |
| okini3939 | 0:10bcaa7c2253 | 100 | |
| okini3939 | 0:10bcaa7c2253 | 101 | #endif /* __LWIP_NETBUF_H__ */ |