1*10465441SEvalZero /* 2*10465441SEvalZero * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 3*10465441SEvalZero * All rights reserved. 4*10465441SEvalZero * 5*10465441SEvalZero * Redistribution and use in source and binary forms, with or without modification, 6*10465441SEvalZero * are permitted provided that the following conditions are met: 7*10465441SEvalZero * 8*10465441SEvalZero * 1. Redistributions of source code must retain the above copyright notice, 9*10465441SEvalZero * this list of conditions and the following disclaimer. 10*10465441SEvalZero * 2. Redistributions in binary form must reproduce the above copyright notice, 11*10465441SEvalZero * this list of conditions and the following disclaimer in the documentation 12*10465441SEvalZero * and/or other materials provided with the distribution. 13*10465441SEvalZero * 3. The name of the author may not be used to endorse or promote products 14*10465441SEvalZero * derived from this software without specific prior written permission. 15*10465441SEvalZero * 16*10465441SEvalZero * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17*10465441SEvalZero * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18*10465441SEvalZero * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 19*10465441SEvalZero * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20*10465441SEvalZero * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 21*10465441SEvalZero * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22*10465441SEvalZero * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23*10465441SEvalZero * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 24*10465441SEvalZero * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 25*10465441SEvalZero * OF SUCH DAMAGE. 26*10465441SEvalZero * 27*10465441SEvalZero * This file is part of the lwIP TCP/IP stack. 28*10465441SEvalZero * 29*10465441SEvalZero * Author: Adam Dunkels <[email protected]> 30*10465441SEvalZero * 31*10465441SEvalZero */ 32*10465441SEvalZero #ifndef __LWIP_NETBUF_H__ 33*10465441SEvalZero #define __LWIP_NETBUF_H__ 34*10465441SEvalZero 35*10465441SEvalZero #include "lwip/opt.h" 36*10465441SEvalZero #include "lwip/pbuf.h" 37*10465441SEvalZero #include "lwip/ip_addr.h" 38*10465441SEvalZero 39*10465441SEvalZero #ifdef __cplusplus 40*10465441SEvalZero extern "C" { 41*10465441SEvalZero #endif 42*10465441SEvalZero 43*10465441SEvalZero /** This netbuf has dest-addr/port set */ 44*10465441SEvalZero #define NETBUF_FLAG_DESTADDR 0x01 45*10465441SEvalZero /** This netbuf includes a checksum */ 46*10465441SEvalZero #define NETBUF_FLAG_CHKSUM 0x02 47*10465441SEvalZero 48*10465441SEvalZero struct netbuf { 49*10465441SEvalZero struct pbuf *p, *ptr; 50*10465441SEvalZero ip_addr_t addr; 51*10465441SEvalZero u16_t port; 52*10465441SEvalZero #if LWIP_NETBUF_RECVINFO || LWIP_CHECKSUM_ON_COPY 53*10465441SEvalZero #if LWIP_CHECKSUM_ON_COPY 54*10465441SEvalZero u8_t flags; 55*10465441SEvalZero #endif /* LWIP_CHECKSUM_ON_COPY */ 56*10465441SEvalZero u16_t toport_chksum; 57*10465441SEvalZero #if LWIP_NETBUF_RECVINFO 58*10465441SEvalZero ip_addr_t toaddr; 59*10465441SEvalZero #endif /* LWIP_NETBUF_RECVINFO */ 60*10465441SEvalZero #endif /* LWIP_NETBUF_RECVINFO || LWIP_CHECKSUM_ON_COPY */ 61*10465441SEvalZero }; 62*10465441SEvalZero 63*10465441SEvalZero /* Network buffer functions: */ 64*10465441SEvalZero struct netbuf * netbuf_new (void); 65*10465441SEvalZero void netbuf_delete (struct netbuf *buf); 66*10465441SEvalZero void * netbuf_alloc (struct netbuf *buf, u16_t size); 67*10465441SEvalZero void netbuf_free (struct netbuf *buf); 68*10465441SEvalZero err_t netbuf_ref (struct netbuf *buf, 69*10465441SEvalZero const void *dataptr, u16_t size); 70*10465441SEvalZero void netbuf_chain (struct netbuf *head, 71*10465441SEvalZero struct netbuf *tail); 72*10465441SEvalZero 73*10465441SEvalZero err_t netbuf_data (struct netbuf *buf, 74*10465441SEvalZero void **dataptr, u16_t *len); 75*10465441SEvalZero s8_t netbuf_next (struct netbuf *buf); 76*10465441SEvalZero void netbuf_first (struct netbuf *buf); 77*10465441SEvalZero 78*10465441SEvalZero 79*10465441SEvalZero #define netbuf_copy_partial(buf, dataptr, len, offset) \ 80*10465441SEvalZero pbuf_copy_partial((buf)->p, (dataptr), (len), (offset)) 81*10465441SEvalZero #define netbuf_copy(buf,dataptr,len) netbuf_copy_partial(buf, dataptr, len, 0) 82*10465441SEvalZero #define netbuf_take(buf, dataptr, len) pbuf_take((buf)->p, dataptr, len) 83*10465441SEvalZero #define netbuf_len(buf) ((buf)->p->tot_len) 84*10465441SEvalZero #define netbuf_fromaddr(buf) (&((buf)->addr)) 85*10465441SEvalZero #define netbuf_set_fromaddr(buf, fromaddr) ip_addr_set((&(buf)->addr), fromaddr) 86*10465441SEvalZero #define netbuf_fromport(buf) ((buf)->port) 87*10465441SEvalZero #if LWIP_NETBUF_RECVINFO 88*10465441SEvalZero #define netbuf_destaddr(buf) (&((buf)->toaddr)) 89*10465441SEvalZero #define netbuf_set_destaddr(buf, destaddr) ip_addr_set((&(buf)->addr), destaddr) 90*10465441SEvalZero #define netbuf_destport(buf) (((buf)->flags & NETBUF_FLAG_DESTADDR) ? (buf)->toport_chksum : 0) 91*10465441SEvalZero #endif /* LWIP_NETBUF_RECVINFO */ 92*10465441SEvalZero #if LWIP_CHECKSUM_ON_COPY 93*10465441SEvalZero #define netbuf_set_chksum(buf, chksum) do { (buf)->flags = NETBUF_FLAG_CHKSUM; \ 94*10465441SEvalZero (buf)->toport_chksum = chksum; } while(0) 95*10465441SEvalZero #endif /* LWIP_CHECKSUM_ON_COPY */ 96*10465441SEvalZero 97*10465441SEvalZero #ifdef __cplusplus 98*10465441SEvalZero } 99*10465441SEvalZero #endif 100*10465441SEvalZero 101*10465441SEvalZero #endif /* __LWIP_NETBUF_H__ */ 102