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incubator-nuttx/include/nuttx/net/icmpv6.h

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/****************************************************************************
* include/nuttx/net/icmpv6.h
* Header file for the NuttX ICMPv6 stack.
*
* Copyright (C) 2007-2009, 2012, 2014, 2017 Gregory Nutt.
* All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* This logic was leveraged from uIP which also has a BSD-style license:
*
* Author Adam Dunkels <adam@dunkels.com>
* Copyright (c) 2001-2003, Adam Dunkels.
* 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.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_NET_ICMPV6_H
#define __INCLUDE_NUTTX_NET_ICMPV6_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <nuttx/net/netconfig.h>
#include <nuttx/net/ip.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* ICMPv6 definitions */
/* ICMPv6 Message Types */
#define ICMPv6_RESERVED 0 /* RFC 4443 */
#define ICMPv6_DEST_UNREACHABLE 1
#define ICMPv6_PACKET_TOO_BIG 2
#define ICMPv6_PACKET_TIME_EXCEEDED 3
#define ICMPv6_PACKET_PARAM_PROBLEM 4
#define ICMPv6_PRIVATE_ERR_MSG_1 100
#define ICMPv6_PRIVATE_ERR_MSG_2 101
#define ICMPv6_RESERVED_ERROR_MSG 127
#define ICMPv6_ECHO_REQUEST 128
#define ICMPv6_ECHO_REPLY 129
#define ICMPV6_MCAST_LISTEN_QUERY 130 /* RFC 2710 and 3810 */
#define ICMPV6_MCAST_LISTEN_REPORT_V1 131 /* RFC 2710 */
#define ICMPV6_MCAST_LISTEN_DONE 132 /* RFC 2710 */
#define ICMPV6_ROUTER_SOLICIT 133 /* RFC 4861 */
#define ICMPV6_ROUTER_ADVERTISE 134
#define ICMPv6_NEIGHBOR_SOLICIT 135
#define ICMPv6_NEIGHBOR_ADVERTISE 136
#define ICMPv6_REDIRECT 137
#define ICMPV6_ROUTER_RENUMBERING 138 /* Matt Crawford */
#define ICMPV6_NODE_INFO_QUERY 139 /* RFC 4620 */
#define ICMPV6_NODE_INFO_REPLY 140
#define ICMPV6_INV_NEIGHBOR_DISCOVERY 141 /* RFC 3122 */
#define ICMPV6_INV_NEIGHBOR_ADVERTISE 142
#define ICMPV6_MCAST_LISTEN_REPORT_V2 143 /* RFC 3810 */
#define ICMPV6_HOME_AGENT_DISCOVERY 144 /* RFC 3775 */
#define ICMPV6_HOME_AGENT_REPLY 145
#define ICMPV6_MOBILE_PREFIX_SOLICIT 146
#define ICMPV6_MOBILE_PREFIX_ADVERTISE 147
#define ICMPv6_PRIVATE_INFO_MSG_1 200 /* RFC 4443 */
#define ICMPv6_PRIVATE_INFO_MSG_2 201
#define ICMPv6_RESERVED_INFO_MSG 255
#define ICMPv6_FLAG_S (1 << 6)
/* Header sizes */
#define ICMPv6_HDRLEN 4 /* Size of ICMPv6 header */
#define IPICMPv6_HDRLEN (ICMPv6_HDRLEN + IPv6_HDRLEN) /* Size of IPv6 + ICMPv6 header */
/* Option types */
#define ICMPv6_OPT_SRCLLADDR 1 /* Source Link-Layer Address */
#define ICMPv6_OPT_TGTLLADDR 2 /* Target Link-Layer Address */
#define ICMPv6_OPT_PREFIX 3 /* Prefix Information */
#define ICMPv6_OPT_REDIRECT 4 /* Redirected Header */
#define ICMPv6_OPT_MTU 5 /* MTU */
#define ICMPv6_OPT_RDNSS 25 /* DNS */
/* ICMPv6 Neighbor Advertisement message flags */
#define ICMPv6_NADV_FLAG_R (1 << 7) /* Router flag */
#define ICMPv6_NADV_FLAG_S (1 << 6) /* Solicited flag */
#define ICMPv6_NADV_FLAG_O (1 << 5) /* Override flag */
/* ICMPv6 Router Advertisement message flags */
#define ICMPv6_RADV_FLAG_M (1 << 7) /* Managed address configuration flag */
#define ICMPv6_RADV_FLAG_O (1 << 6) /* Other configuration flag */
/* Prefix option flags */
#define ICMPv6_PRFX_FLAG_L (1 << 7) /* On-link flag */
#define ICMPv6_PRFX_FLAG_A (1 << 6) /* Autonomous address-configuration flag */
/* Return with size of an option (in full octects) using the size of a link
* layer address taking into account a header of the two-bytes.
*/
#define ICMPv6_OPT_SIZE(a) ((a) > 0 ? ((a) + 2 + 7) & ~7 : 0)
#define ICMPv6_OPT_OCTECTS(a) ((a) > 0 ? ((a) + 2 + 7) >> 3 : 0)
/* Codes for Destination Unreachable */
#define ICMPv6_NOROUTE 0
#define ICMPv6_ADM_PROHIBITED 1
#define ICMPv6_NOT_NEIGHBOUR 2
#define ICMPv6_ADDR_UNREACH 3
#define ICMPv6_PORT_UNREACH 4
#define ICMPv6_POLICY_FAIL 5
#define ICMPv6_REJECT_ROUTE 6
/* Codes for Time Exceeded */
#define ICMPV6_EXC_HOPLIMIT 0
#define ICMPV6_EXC_FRAGTIME 1
/****************************************************************************
* Public Type Definitions
****************************************************************************/
/* The ICMPv6 header */
struct icmpv6_hdr_s
{
uint8_t type; /* Defines the format of the ICMP message */
uint8_t code; /* Further qualifies the ICMP messages */
uint16_t chksum; /* Checksum of ICMP header and data */
/* Data following the ICMP header contains the data specific to the
* message type indicated by the Type and Code fields.
*/
uint16_t data[2];
};
/* The ICMPv6 and IPv6 headers */
struct icmpv6_iphdr_s
{
/* 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), 4-bits: 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) */
net_ipv6addr_t srcipaddr; /* 128-bit Source address */
net_ipv6addr_t destipaddr; /* 128-bit Destination address */
/* ICMPv6 header */
uint8_t type; /* Defines the format of the ICMP message */
uint8_t code; /* Further qualifies the ICMP messages */
uint16_t chksum; /* Checksum of ICMP header and data */
/* Data following the ICMP header contains the data specific to the
* message type indicated by the Type and Code fields.
*/
};
/* This the message format for the ICMPv6 Neighbor Solicitation message */
struct icmpv6_neighbor_solicit_s
{
uint8_t type; /* Message Type: ICMPv6_NEIGHBOR_SOLICIT */
uint8_t code; /* Further qualifies the ICMP messages */
uint16_t chksum; /* Checksum of ICMP header and data */
uint8_t flags[4]; /* See ICMPv6_FLAG_ definitions */
net_ipv6addr_t tgtaddr; /* 128-bit Target IPv6 address */
uint8_t opttype; /* Option Type: ICMPv6_OPT_SRCLLADDR */
uint8_t optlen; /* Option length: 1 octet */
uint8_t srclladdr[6]; /* Options: Source link layer address */
};
#define SIZEOF_ICMPV6_NEIGHBOR_SOLICIT_S(n) \
(sizeof(struct icmpv6_neighbor_solicit_s) + ICMPv6_OPT_SIZE(n) - 8)
/* This the message format for the ICMPv6 Neighbor Advertisement message */
struct icmpv6_neighbor_advertise_s
{
uint8_t type; /* Message Type: ICMPv6_NEIGHBOR_ADVERTISE */
uint8_t code; /* Further qualifies the ICMP messages */
uint16_t chksum; /* Checksum of ICMP header and data */
uint8_t flags[4]; /* See ICMPv6_NADV_FLAG_ definitions */
net_ipv6addr_t tgtaddr; /* Target IPv6 address */
uint8_t opttype; /* Option Type: ICMPv6_OPT_TGTLLADDR */
uint8_t optlen; /* Option length in octets */
uint8_t tgtlladdr[6]; /* Options: Target link layer address */
/* Actual size determined by optlen */
};
#define SIZEOF_ICMPV6_NEIGHBOR_ADVERTISE_S(n) \
(sizeof(struct icmpv6_neighbor_advertise_s) + ICMPv6_OPT_SIZE(n) - 8)
/* This the message format for the ICMPv6 Router Solicitation message */
struct icmpv6_router_solicit_s
{
uint8_t type; /* Message Type: ICMPV6_ROUTER_SOLICIT */
uint8_t code; /* Further qualifies the ICMP messages */
uint16_t chksum; /* Checksum of ICMP header and data */
uint8_t flags[4]; /* See ICMPv6_RADV_FLAG_ definitions (must be zero) */
uint8_t opttype; /* Option Type: ICMPv6_OPT_SRCLLADDR */
uint8_t optlen; /* Option length in octets */
uint8_t srclladdr[6]; /* Options: Source link layer address */
};
#define SIZEOF_ICMPV6_ROUTER_SOLICIT_S(n) \
(sizeof(struct icmpv6_router_solicit_s) + ICMPv6_OPT_SIZE(n) - 8)
/* This the message format for the ICMPv6 Router Advertisement message:
* Options may include: ICMPv6_OPT_SRCLLADDR, ICMPv6_OPT_MTU, and/or
* ICMPv6_OPT_PREFIX
*/
struct icmpv6_router_advertise_s
{
uint8_t type; /* Message Type: ICMPV6_ROUTER_ADVERTISE */
uint8_t code; /* Further qualifies the ICMP messages */
uint16_t chksum; /* Checksum of ICMP header and data */
uint8_t hoplimit; /* Current hop limit */
uint8_t flags; /* See ICMPv6_RADV_FLAG_* definitions */
uint16_t lifetime; /* Router lifetime */
uint16_t reachable[2]; /* Reachable time */
uint16_t retrans[2]; /* Retransmission timer */
/* Options begin here */
};
#define ICMPv6_RADV_MINLEN (16)
#define ICMPv6_RADV_OPTLEN(n) ((n) - ICMPv6_RADV_MINLEN)
/* This the message format for the ICMPv6 Echo Request message */
begin_packed_struct struct icmpv6_echo_request_s
{
uint8_t type; /* Message Type: ICMPv6_ECHO_REQUEST */
uint8_t code; /* Further qualifies the ICMP messages */
uint16_t chksum; /* Checksum of ICMP header and data */
uint16_t id; /* Identifier */
uint16_t seqno; /* Sequence Number */
uint8_t data[1]; /* Data follows */
} end_packed_struct;
#define SIZEOF_ICMPV6_ECHO_REQUEST_S(n) \
(sizeof(struct icmpv6_echo_request_s) - 1 + (n))
/* This the message format for the ICMPv6 Echo Reply message */
begin_packed_struct struct icmpv6_echo_reply_s
{
uint8_t type; /* Message Type: ICMPv6_ECHO_REQUEST */
uint8_t code; /* Further qualifies the ICMP messages */
uint16_t chksum; /* Checksum of ICMP header and data */
uint16_t id; /* Identifier */
uint16_t seqno; /* Sequence Number */
uint8_t data[1]; /* Data follows */
} end_packed_struct;
#define SIZEOF_ICMPV6_ECHO_REPLY_S(n) \
(sizeof(struct icmpv6_echo_reply_s) - 1 + (n))
/* Option types */
struct icmpv6_generic_s
{
uint8_t opttype; /* Octet 1: Option Type */
uint8_t optlen; /* " " ": Option length (in octets) */
uint16_t pad; /* " " ": The rest depends on the option */
};
struct icmpv6_srclladdr_s
{
uint8_t opttype; /* Octet 1: Option Type: ICMPv6_OPT_SRCLLADDR */
uint8_t optlen; /* " " ": Option length: 1 octet */
uint8_t srclladdr[6]; /* " " ": Options: Source link layer address */
};
#define SIZEOF_ICMPV6_SRCLLADDR_S(n) ICMPv6_OPT_SIZE(n)
struct icmpv6_tgrlladdr_s
{
uint8_t opttype; /* Octet 1: Option Type: ICMPv6_OPT_TGTLLADDR */
uint8_t optlen; /* " " ": Option length in octets */
uint8_t tgtlladdr[6]; /* " " ": Options: Target link layer address */
};
#define SIZEOF_ICMPV6_TGRLLADDR_S(n) ICMPv6_OPT_SIZE(n)
struct icmpv6_prefixinfo_s
{
uint8_t opttype; /* Octet 1: Option Type: ICMPv6_OPT_PREFIX */
uint8_t optlen; /* " " ": Option length: 4 octets */
uint8_t preflen; /* " " ": Prefix length */
uint8_t flags; /* " " ": Flags */
uint16_t vlifetime[2]; /* " " ": Valid lifetime */
uint16_t plifetime[2]; /* Octet 2: Preferred lifetime */
uint16_t reserved[2]; /* " " ": Reserved */
uint16_t prefix[8]; /* Octets 3-4: Prefix */
};
struct icmpv6_redirect_s
{
uint8_t opttype; /* Octet 1: Option Type: ICMPv6_OPT_REDIRECT */
uint8_t optlen; /* " " ": Option length: 1 octet */
uint16_t reserved[3]; /* " " ": Reserved */
uint8_t header[1]; /* Octets 2-: Beginning of the IP header */
};
struct icmpv6_mtu_s
{
uint8_t opttype; /* Octet 1: Option Type: ICMPv6_OPT_MTU */
uint8_t optlen; /* " " ": Option length: 1 octet */
uint16_t reserved; /* " " ": Reserved */
uint16_t mtu[2]; /* " " ": MTU */
};
struct icmpv6_rdnss_s
{
uint8_t opttype; /* Octet 1: Option Type: ICMPv6_OPT_RNDSS */
uint8_t optlen; /* " " ": Option length: 1 octet */
uint16_t reserved; /* " " ": Reserved */
uint16_t lifetime[2]; /* " " ": lifetime */
uint8_t servers[1]; /* Octets 2-: Beginning of the DNS Servers */
};
/* The structure holding the ICMP statistics that are gathered if
* CONFIG_NET_STATISTICS is defined.
*/
#ifdef CONFIG_NET_STATISTICS
struct icmpv6_stats_s
{
net_stats_t drop; /* Number of dropped ICMP packets */
net_stats_t recv; /* Number of received ICMP packets */
net_stats_t sent; /* Number of sent ICMP packets */
net_stats_t typeerr; /* Number of ICMP packets with a wrong type */
};
#endif
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_NUTTX_NET_ICMPV6_H */
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