b7a09886e7
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2776 42af7a65-404d-4744-a932-0658087f49c3
151 lines
5.8 KiB
C
Executable File
151 lines
5.8 KiB
C
Executable File
/****************************************************************************
|
|
* net/uip/uip-igmp.h
|
|
* The definitions in this header file are intended only for internal use
|
|
* by the NuttX port of the uIP stack.
|
|
*
|
|
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* The NuttX implementation of IGMP was inspired by the IGMP add-on for the
|
|
* lwIP TCP/IP stack by Steve Reynolds:
|
|
*
|
|
* Copyright (c) 2002 CITEL Technologies Ltd.
|
|
* 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. Neither the name of CITEL Technologies Ltd nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY CITEL TECHNOLOGIES AND CONTRIBUTORS ``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 CITEL TECHNOLOGIES OR CONTRIBUTORS 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __NET_UIP_IGMP_H
|
|
#define __NET_UIP_IGMP_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <netinet/in.h>
|
|
|
|
#ifdef CONFIG_NET_IGMP
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_IPv6
|
|
# error "IGMP for IPv6 not supported"
|
|
#endif
|
|
|
|
/* IGMP packet types */
|
|
|
|
#define IGMP_MEMBERSHIP_QUERY 0x11 /* Membership Query */
|
|
#define IGMPv1_MEMBERSHIP_REPORT 0x12 /* IGMP Ver. 1 Membership Report */
|
|
#define IGMPv2_MEMBERSHIP_REPORT 0x16 /* IGMP Ver. 2 Membership Report */
|
|
#define IGMPv3_MEMBERSHIP_REPORT 0x22 /* IGMP Ver. 3 Membership Report */
|
|
#define IGMP_LEAVE_GROUP 0x17 /* Leave Group */
|
|
|
|
/* Header sizes */
|
|
|
|
#define UIP_IGMPH_LEN 4 /* Size of IGMP header */
|
|
#define UIP_IPIGMPH_LEN (UIP_IGMPH_LEN + UIP_IPH_LEN) /* Size of IP + IGMP header */
|
|
|
|
/****************************************************************************
|
|
* Public Types
|
|
****************************************************************************/
|
|
|
|
/* IGMPv2 packet structure as defined by RFC 2236.
|
|
*
|
|
* The Max Respone Time (maxresp) specifies the time limit for the
|
|
* corresponding report. The field has a resolution of 100 miliseconds, the
|
|
* value is taken directly. This field is meaningful only in Membership Query
|
|
* (0x11); in other messages it is set to 0 and ignored by the receiver.
|
|
*/
|
|
|
|
struct uip_igmphdr_s
|
|
{
|
|
#ifdef CONFIG_NET_IPv6
|
|
|
|
/* IPv6 Ip header */
|
|
|
|
uint8_t vtc; /* Bits 0-3: version, bits 4-7: traffic class (MS) */
|
|
uint8_t tcf; /* Bits 0-3: traffic class (LS), bits 4-7: flow label (MS) */
|
|
uint16_t flow; /* 16-bit flow label (LS) */
|
|
uint8_t len[2]; /* 16-bit Payload length */
|
|
uint8_t proto; /* 8-bit Next header (same as IPv4 protocol field) */
|
|
uint8_t ttl; /* 8-bit Hop limit (like IPv4 TTL field) */
|
|
uip_ip6addr_t srcipaddr; /* 128-bit Source address */
|
|
uip_ip6addr_t destipaddr; /* 128-bit Destination address */
|
|
|
|
#else /* CONFIG_NET_IPv6 */
|
|
|
|
/* IPv4 IP header */
|
|
|
|
uint8_t vhl; /* 8-bit Version (4) and header length (5 or 6) */
|
|
uint8_t tos; /* 8-bit Type of service (e.g., 6=TCP) */
|
|
uint8_t len[2]; /* 16-bit Total length */
|
|
uint8_t ipid[2]; /* 16-bit Identification */
|
|
uint8_t ipoffset[2]; /* 16-bit IP flags + fragment offset */
|
|
uint8_t ttl; /* 8-bit Time to Live */
|
|
uint8_t proto; /* 8-bit Protocol */
|
|
uint16_t ipchksum; /* 16-bit Header checksum */
|
|
uint16_t srcipaddr[2]; /* 32-bit Source IP address */
|
|
uint16_t destipaddr[2]; /* 32-bit Destination IP address */
|
|
|
|
#endif /* CONFIG_NET_IPv6 */
|
|
|
|
/* IGMP header */
|
|
|
|
uint8_t type; /* 8-bit IGMP packet type */
|
|
uint8_t maxresp; /* 8-bit Max response time */
|
|
uint16_t chksum; /* 16-bit Checksum */
|
|
uint16_t grpaddr[2]; /* 32-bit Group address */
|
|
};
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
#undef EXTERN
|
|
#if defined(__cplusplus)
|
|
#define EXTERN extern "C"
|
|
extern "C" {
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
|
|
#undef EXTERN
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif /* CONFIG_NET_IGMP */
|
|
#endif /* __NET_UIP_IGMP_H */
|