You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
101 lines
4.1 KiB
101 lines
4.1 KiB
/*
|
|
* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
|
|
* All rights reserved.
|
|
*
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
* This file is part of the lwIP TCP/IP stack.
|
|
*
|
|
* Author: Adam Dunkels <adam@sics.se>
|
|
*
|
|
*/
|
|
#ifndef __LWIP_NETBUF_H__
|
|
#define __LWIP_NETBUF_H__
|
|
|
|
#include "lwip/opt.h"
|
|
#include "lwip/pbuf.h"
|
|
#include "lwip/ip_addr.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/** This netbuf has dest-addr/port set */
|
|
#define NETBUF_FLAG_DESTADDR 0x01
|
|
/** This netbuf includes a checksum */
|
|
#define NETBUF_FLAG_CHKSUM 0x02
|
|
|
|
struct netbuf {
|
|
struct pbuf *p, *ptr;
|
|
ip_addr_t addr;
|
|
u16_t port;
|
|
#if LWIP_NETBUF_RECVINFO || LWIP_CHECKSUM_ON_COPY
|
|
#if LWIP_CHECKSUM_ON_COPY
|
|
u8_t flags;
|
|
#endif /* LWIP_CHECKSUM_ON_COPY */
|
|
u16_t toport_chksum;
|
|
#if LWIP_NETBUF_RECVINFO
|
|
ip_addr_t toaddr;
|
|
#endif /* LWIP_NETBUF_RECVINFO */
|
|
#endif /* LWIP_NETBUF_RECVINFO || LWIP_CHECKSUM_ON_COPY */
|
|
};
|
|
|
|
/* Network buffer functions: */
|
|
struct netbuf * netbuf_new (void)ICACHE_FLASH_ATTR;
|
|
void netbuf_delete (struct netbuf *buf)ICACHE_FLASH_ATTR;
|
|
void * netbuf_alloc (struct netbuf *buf, u16_t size)ICACHE_FLASH_ATTR;
|
|
void netbuf_free (struct netbuf *buf)ICACHE_FLASH_ATTR;
|
|
err_t netbuf_ref (struct netbuf *buf,
|
|
const void *dataptr, u16_t size)ICACHE_FLASH_ATTR;
|
|
void netbuf_chain (struct netbuf *head,
|
|
struct netbuf *tail)ICACHE_FLASH_ATTR;
|
|
|
|
err_t netbuf_data (struct netbuf *buf,
|
|
void **dataptr, u16_t *len)ICACHE_FLASH_ATTR;
|
|
s8_t netbuf_next (struct netbuf *buf)ICACHE_FLASH_ATTR;
|
|
void netbuf_first (struct netbuf *buf)ICACHE_FLASH_ATTR;
|
|
|
|
|
|
#define netbuf_copy_partial(buf, dataptr, len, offset) \
|
|
pbuf_copy_partial((buf)->p, (dataptr), (len), (offset))
|
|
#define netbuf_copy(buf,dataptr,len) netbuf_copy_partial(buf, dataptr, len, 0)
|
|
#define netbuf_take(buf, dataptr, len) pbuf_take((buf)->p, dataptr, len)
|
|
#define netbuf_len(buf) ((buf)->p->tot_len)
|
|
#define netbuf_fromaddr(buf) (&((buf)->addr))
|
|
#define netbuf_set_fromaddr(buf, fromaddr) ip_addr_set((&(buf)->addr), fromaddr)
|
|
#define netbuf_fromport(buf) ((buf)->port)
|
|
#if LWIP_NETBUF_RECVINFO
|
|
#define netbuf_destaddr(buf) (&((buf)->toaddr))
|
|
#define netbuf_set_destaddr(buf, destaddr) ip_addr_set((&(buf)->addr), destaddr)
|
|
#define netbuf_destport(buf) (((buf)->flags & NETBUF_FLAG_DESTADDR) ? (buf)->toport_chksum : 0)
|
|
#endif /* LWIP_NETBUF_RECVINFO */
|
|
#if LWIP_CHECKSUM_ON_COPY
|
|
#define netbuf_set_chksum(buf, chksum) do { (buf)->flags = NETBUF_FLAG_CHKSUM; \
|
|
(buf)->toport_chksum = chksum; } while(0)
|
|
#endif /* LWIP_CHECKSUM_ON_COPY */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __LWIP_NETBUF_H__ */
|
|
|