diff options
Diffstat (limited to 'lwip/src/include/lwip/ip4_frag.h')
-rw-r--r-- | lwip/src/include/lwip/ip4_frag.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/lwip/src/include/lwip/ip4_frag.h b/lwip/src/include/lwip/ip4_frag.h new file mode 100644 index 0000000..ed5bf14 --- /dev/null +++ b/lwip/src/include/lwip/ip4_frag.h @@ -0,0 +1,100 @@ +/** + * @file + * IP fragmentation/reassembly + */ + +/* + * 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: Jani Monoses <jani@iv.ro> + * + */ + +#ifndef LWIP_HDR_IP4_FRAG_H +#define LWIP_HDR_IP4_FRAG_H + +#include "lwip/opt.h" +#include "lwip/err.h" +#include "lwip/pbuf.h" +#include "lwip/netif.h" +#include "lwip/ip_addr.h" +#include "lwip/ip.h" + +#if LWIP_IPV4 + +#ifdef __cplusplus +extern "C" { +#endif + +#if IP_REASSEMBLY +/* The IP reassembly timer interval in milliseconds. */ +#define IP_TMR_INTERVAL 1000 + +/** IP reassembly helper struct. + * This is exported because memp needs to know the size. + */ +struct ip_reassdata { + struct ip_reassdata *next; + struct pbuf *p; + struct ip_hdr iphdr; + u16_t datagram_len; + u8_t flags; + u8_t timer; +}; + +void ip_reass_init(void); +void ip_reass_tmr(void); +struct pbuf * ip4_reass(struct pbuf *p); +#endif /* IP_REASSEMBLY */ + +#if IP_FRAG +#if !LWIP_NETIF_TX_SINGLE_PBUF +#ifndef LWIP_PBUF_CUSTOM_REF_DEFINED +#define LWIP_PBUF_CUSTOM_REF_DEFINED +/** A custom pbuf that holds a reference to another pbuf, which is freed + * when this custom pbuf is freed. This is used to create a custom PBUF_REF + * that points into the original pbuf. */ +struct pbuf_custom_ref { + /** 'base class' */ + struct pbuf_custom pc; + /** pointer to the original pbuf that is referenced */ + struct pbuf *original; +}; +#endif /* LWIP_PBUF_CUSTOM_REF_DEFINED */ +#endif /* !LWIP_NETIF_TX_SINGLE_PBUF */ + +err_t ip4_frag(struct pbuf *p, struct netif *netif, const ip4_addr_t *dest); +#endif /* IP_FRAG */ + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_IPV4 */ + +#endif /* LWIP_HDR_IP4_FRAG_H */ |