140 lines
5.0 KiB
C
140 lines
5.0 KiB
C
/****************************************************************************
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* net/uip/uip-icmp.h
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* Header file for the uIP ICMP stack.
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*
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* Copyright (C) 2007 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* This logic was leveraged from uIP which also has a BSD-style license:
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*
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* Author Adam Dunkels <adam@dunkels.com>
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* Copyright (c) 2001-2003, Adam Dunkels.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __NET_UIP_UIP_ICMP_H
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#define __NET_UIP_UIP_ICMP_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <net/uip/uipopt.h>
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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/* The ICMP and IP headers */
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struct uip_icmpip_hdr
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{
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#ifdef CONFIG_NET_IPv6
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/* IPv6 Ip header */
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uint8 vtc; /* Bits 0-3: version, bits 4-7: traffic class (MS) */
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uint8 tcf; /* Bits 0-3: traffic class (LS), bits 4-7: flow label (MS) */
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uint16 flow; /* 16-bit flow label (LS) */
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uint8 len[2]; /* 16-bit Payload length */
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uint8 proto; /* 8-bit Next header (same as IPv4 protocol field) */
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uint8 ttl; /* 8-bit Hop limit (like IPv4 TTL field) */
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uip_ip6addr_t srcipaddr; /* 128-bit Source address */
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uip_ip6addr_t destipaddr; /* 128-bit Destination address */
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#else /* CONFIG_NET_IPv6 */
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/* IPv4 IP header */
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uint8 vhl; /* 8-bit Version (4) and header length (5 or 6) */
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uint8 tos; /* 8-bit Type of service (e.g., 6=TCP) */
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uint8 len[2]; /* 16-bit Total length */
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uint8 ipid[2]; /* 16-bit Identification */
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uint8 ipoffset[2]; /* 16-bit IP flags + fragment offset */
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uint8 ttl; /* 8-bit Time to Live */
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uint8 proto; /* 8-bit Protocol */
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uint16 ipchksum; /* 16-bit Header checksum */
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uint16 srcipaddr[2]; /* 32-bit Source IP address */
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uint16 destipaddr[2]; /* 32-bit Destination IP address */
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#endif /* CONFIG_NET_IPv6 */
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/* ICMP (echo) header */
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uint8 type;
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uint8 icode;
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uint16 icmpchksum;
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#ifndef CONFIG_NET_IPv6
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uint16 id;
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uint16 seqno;
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#else /* !CONFIG_NET_IPv6 */
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uint8 flags;
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uint8 reserved1;
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uint8 reserved2;
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uint8 reserved3;
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uint8 icmp6data[16];
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uint8 options[1];
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#endif /* !CONFIG_NET_IPv6 */
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};
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/* The structure holding the ICMP statistics that are gathered if
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* CONFIG_NET_STATISTICS is defined.
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*/
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#ifdef CONFIG_NET_STATISTICS
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struct uip_icmp_stats_s
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{
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uip_stats_t drop; /* Number of dropped ICMP packets */
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uip_stats_t recv; /* Number of received ICMP packets */
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uip_stats_t sent; /* Number of sent ICMP packets */
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uip_stats_t typeerr; /* Number of ICMP packets with a wrong type */
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};
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#endif
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#endif /* __NET_UIP_UIP_ICMP_H */
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