LwIP
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Outline
#define LWIP_HDR_NETBUF_H
#include "lwip/opt.h"
#include "lwip/pbuf.h"
#include "lwip/ip_addr.h"
#include "lwip/ip6_addr.h"
#define NETBUF_FLAG_DESTADDR
#define NETBUF_FLAG_CHKSUM
netbuf
netbuf_new();
netbuf_delete(struct netbuf *);
netbuf_alloc(struct netbuf *, u16_t);
netbuf_free(struct netbuf *);
netbuf_ref(struct netbuf *, const void *, u16_t);
netbuf_chain(struct netbuf *, struct netbuf *);
netbuf_data(struct netbuf *, void **, u16_t *);
netbuf_next(struct netbuf *);
netbuf_first(struct netbuf *);
#define netbuf_copy
#define netbuf_take
#define netbuf_len
#define netbuf_fromaddr
#define netbuf_set_fromaddr
#define netbuf_fromport
#define netbuf_destaddr
#define netbuf_set_destaddr
#define netbuf_destport
#define netbuf_destport
Files
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SourceVuSTM32 Libraries and SamplesLwIPsrc/include/lwip/netbuf.h
 
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/** * @file * netbuf API (for netconn API) *//* ... */ /* * 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_HDR_NETBUF_H #define LWIP_HDR_NETBUF_H #include "lwip/opt.h" #if LWIP_NETCONN || LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ /* Note: Netconn API is always available when sockets are enabled - * sockets are implemented on top of them *//* ... */ #include "lwip/pbuf.h" #include "lwip/ip_addr.h" #include "lwip/ip6_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 /** "Network buffer" - contains data and addressing info */ struct netbuf { struct pbuf *p, *ptr; ip_addr_t addr; u16_t port; #if LWIP_NETBUF_RECVINFO || LWIP_CHECKSUM_ON_COPY u8_t flags; 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); void netbuf_delete (struct netbuf *buf); void * netbuf_alloc (struct netbuf *buf, u16_t size); void netbuf_free (struct netbuf *buf); err_t netbuf_ref (struct netbuf *buf, const void *dataptr, u16_t size); void netbuf_chain (struct netbuf *head, struct netbuf *tail); err_t netbuf_data (struct netbuf *buf, void **dataptr, u16_t *len); s8_t netbuf_next (struct netbuf *buf); void netbuf_first (struct netbuf *buf); #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) 7 defines#if LWIP_NETBUF_RECVINFO #define netbuf_destaddr(buf) (&((buf)->toaddr)) #define netbuf_set_destaddr(buf, destaddr) ip_addr_set(&((buf)->toaddr), destaddr) #if LWIP_CHECKSUM_ON_COPY #define netbuf_destport(buf) (((buf)->flags & NETBUF_FLAG_DESTADDR) ? (buf)->toport_chksum : 0) #else /* LWIP_CHECKSUM_ON_COPY */ #define netbuf_destport(buf) ((buf)->toport_chksum) #endif /* LWIP_CHECKSUM_ON_COPY *//* ... */ #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 }extern "C" { ... } #endif /* ... */ #endif /* LWIP_NETCONN || LWIP_SOCKET */ /* ... */ #endif /* LWIP_HDR_NETBUF_H */
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