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| /* |
| * Copyright (c) 2008 Lukas Mejdrech |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - 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. |
| */ |
| |
| /** @addtogroup net |
| * @{ |
| */ |
| |
| /** |
| * @file |
| * Interent protocol header and options definitions. |
| * Names according to the linux src/include/linux/ip.h header file. |
| */ |
| |
| #ifndef __NET_IP_HEADER_H__ |
| #define __NET_IP_HEADER_H__ |
| |
| #include <byteorder.h> |
| #include <types.h> |
| |
| typedef struct ip_header ip_header_t; |
| typedef ip_header_t * ip_header_ref; |
| |
| /** Internet header. |
| * The variable options should be included after the header itself and indicated by the increased header length value. |
| */ |
| struct ip_header{ |
| #ifdef ARCH_IS_BIG_ENDIAN |
| /** The Version field indicates the format of the internet header. |
| */ |
| uint8_t:4 version; |
| /** Internet Header Length is the length of the internet header in 32~bit words, and thus points to the beginning of the data. |
| * Note that the minimum value for a~correct header is~5. |
| */ |
| uint8_t:4 ihl; |
| #else |
| /** Internet Header Length is the length of the internet header in 32~bit words, and thus points to the beginning of the data. |
| * Note that the minimum value for a~correct header is~5. |
| */ |
| uint8_t:4 ihl; |
| /** The Version field indicates the format of the internet header. |
| */ |
| uint8_t:4 version; |
| #endif |
| /** The Type of Service provides an indication of the abstract parameters of the quality of service desired. |
| * These parameters are to be used to guide the selection of the actual service parameters when transmitting a~datagram through a~particular network. |
| * Several networks offer service precedence, which somehow treats high precedence traffic as more important than other traffic (generally by accepting only traffic above a~certain precedence at time of high load). |
| * The major choice is a~three way tradeoff between low-delay, high-reliability, and high-throughput. |
| */ |
| uint8_t tos; |
| /** Total Length is the length of the datagram, measured in octets, including internet header and data. |
| * This field allows the length of a~datagram to be up to 65,535~octets. |
| */ |
| uint16_t total_length; |
| /** An identifying value assigned by the sender to aid in assembling the fragments of a~datagram. |
| */ |
| unit16_t identification; |
| #ifdef ARCH_IS_BIG_ENDIAN |
| /** Various control flags. |
| */ |
| uint_16:3 flags; |
| /** This field indicates where in the datagram this fragment belongs. |
| */ |
| uint_16:13 fragment_offset; |
| #else |
| /** This field indicates where in the datagram this fragment belongs. |
| */ |
| uint_16:13 fragment_offset; |
| /** Various control flags. |
| */ |
| uint_16:3 flags; |
| #endif |
| /** This field indicates the maximum time the datagram is allowed to remain in the internet system. |
| * If this field contains the value zero, then the datagram must be destroyed. |
| * This field is modified in internet header processing. |
| * The time is measured in units of seconds, but since every module that processes a~datagram must decrease the TTL by at least one even if it process the datagram in less than a~second, the TTL must be thought of only as an upper bound on the time a~datagram may exist. |
| * The intention is to cause undeliverable datagrams to be discarded, and to bound the maximum datagram lifetime. |
| */ |
| uint8_t ttl; |
| /** This field indicates the next level protocol used in the data portion of the internet datagram. |
| */ |
| uint8_t protocol; |
| /** A checksum on the header only. |
| * Since some header fields change (e.g., time to live), this is recomputed and verified at each point that the internet header is processed. |
| * The checksum algorithm is: The checksum field is the 16~bit one's complement of the one's complement sum of all 16~bit words in the header. |
| * For purposes of computing the checksum, the value of the checksum field is zero. |
| */ |
| uint16_t header_checksum; |
| /** The source address. |
| */ |
| uint32_t source_address; |
| /** The destination address. |
| */ |
| uint32_t destination_address; |
| }; |
| |
| typedef struct ip_option ip_option_t; |
| typedef ip_option * ip_option_ref; |
| |
| /** Internet option header. |
| * Only type field is always valid. |
| * Other fields' validity depends on the option type. |
| */ |
| struct ip_option{ |
| /** A single octet of option-type. |
| */ |
| uint8_t type; |
| /** An option length octet. |
| */ |
| uint8_t length; |
| /** A~pointer. |
| */ |
| uint8_t pointer; |
| #ifdef ARCH_IS_BIG_ENDIAN |
| /** The number of IP modules that cannot register timestamps due to lack of space. |
| */ |
| uint8_t:4 overflow; |
| /** Various internet timestamp control flags. |
| */ |
| uint8_t:4 flags; |
| #else |
| /** Various internet timestamp control flags. |
| */ |
| uint8_t:4 flags; |
| /** The number of IP modules that cannot register timestamps due to lack of space. |
| */ |
| uint8_t:4 overflow; |
| #endif |
| }; |
| |
| #define IPTOS_TOS_MASK 0x1E |
| #define IPTOS_PRECEDENCE_SHIFT 5 |
| #define IPTOS_DELAY_SHIFT 4 |
| #define IPTOS_TROUGHPUT_SHIFT 3 |
| #define IPTOS_RELIABILITY_SHIFT 2 |
| #define IPTOS_COST_SHIFT 1 |
| |
| #define IPTOS_NORMALDELAY ( 0x0 << IPTOS_DELAY_SHIFT ) |
| #define IPTOS_LOWDELAY ( 0x1 << IPTOS_DELAY_SHIFT ) |
| |
| #define IPTOS_NORMALTHROUGHPUT ( 0x0 << IPTOS_THROUGHPUT_SHIFT ) |
| #define IPTOS_THROUGHPUT ( 0x1 << IPTOS_THROUGHPUT_SHIFT ) |
| |
| #define IPTOS_NORMALRELIABILITY ( 0x0 << IPTOS_RELIABILITY_SHIFT ) |
| #define IPTOS_RELIABILITY ( 0x1 << IPTOS_RELIABILITY_SHIFT ) |
| |
| #define IPTOS_NORMALCOST ( 0x0 << IPTOS_COST_SHIFT ) |
| #define IPTOS_MICNCOST ( 0x1 << IPTOS_COST_SHIFT ) |
| |
| #define IPTOS_PREC_MASK 0xE0 |
| #define IPTOS_PREC_ROUTINE ( 0x0 << IPTOS_PRECEDENCE_SHIFT ) |
| #define IPTOS_PREC_PRIORITY ( 0x1 << IPTOS_PRECEDENCE_SHIFT ) |
| #define IPTOS_PREC_IMMEDIATE ( 0x2 << IPTOS_PRECEDENCE_SHIFT ) |
| #define IPTOS_PREC_FLASH ( 0x3 << IPTOS_PRECEDENCE_SHIFT ) |
| #define IPTOS_PREC_FLASHOVERRIDE ( 0x4 << IPTOS_PRECEDENCE_SHIFT ) |
| #define IPTOS_PREC_CRITIC_ECP ( 0x5 << IPTOS_PRECEDENCE_SHIFT ) |
| #define IPTOS_PREC_INTERNETCONTROL ( 0x6 << IPTOS_PRECEDENCE_SHIFT ) |
| #define IPTOS_PREC_NETCONTROL ( 0x7 << IPTOS_PRECEDENCE_SHIFT ) |
| |
| #define IPFLAG_FRAGMENT_SHIFT 1 |
| #define IPFLAG_FRAGMENTED_SHIFT 0 |
| |
| #define IPFLAG_MAY_FRAGMENT ( 0x0 << IPFLAG_FRAGMENT_SHIFT ) |
| #define IPFLAG_DONT_FRAGMENT ( 0x1 << IPFLAG_FRAGMENT_SHIFT ) |
| |
| #define IPFLAG_LAST_FRAGMENT ( 0x0 << IPFLAG_FRAGMENTED_SHIFT ) |
| #define IPFLAG_MORE_FRAGMENTS ( 0x1 << IPFLAG_FRAGMENTED_SHIFT ) |
| |
| #define IPOPT_COPY_SHIFT 7 |
| #define IPOPT_CLASS_SHIFT 5 |
| #define IPOPT_NUMBER_SHIFT 0 |
| #define IPOPT_CLASS_MASK 0x60 |
| #define IPOPT_NUMBER_MASK 0x1F |
| |
| #define IPOPT_COPY ( 1 << IPOPT_COPY_SHIFT ) |
| |
| #define IPOPT_TYPE( copy, class, number ) ((( copy ) & IPOPT_COPY ) | (( class ) & IPOPT_CLASS_MASK ) | (( number << IPOPT_NUMBER_SHIFT ) & IPOPT_NUMBER_MASK )) |
| |
| #define IPOPT_COPIED( o ) (( o ) & IPOPT_COPY ) |
| #define IPOPT_CLASS( o ) (( o ) & IPOPT_CLASS_MASK ) |
| #define IPOPT_NUMBER( o ) (( o ) & IPOPT_NUMBER_MASK ) |
| |
| #define IPOPT_CONTROL ( 1 << IPOPT_CLASS_SHIFT ) |
| #define IPOPT_RESERVED1 ( 2 << IPOPT_CLASS_SHIFT ) |
| #define IPOPT_MEASUREMENT ( 3 << IPOPT_CLASS_SHIFT ) |
| #define IPOPT_RESERVED2 ( 4 << IPOPT_CLASS_SHIFT ) |
| |
| //#define IPOPT_END_OF_LIST 0x0 |
| #define IPOPT_END IPOPT_TYPE( 0, IPOPT_CONTROL, 0 ) |
| //#define IPOPT_NO_OPERATION 0x1 |
| #define IPOPT_NOOP IPOPT_TYPE( 0, IPOPT_CONTROL, 1 ) |
| //#define IPOPT_SECURITY 0x82 |
| #define IPOPT_SEC IPOPT_TYPE( IPOPT_COPY, IPOPT_CONTROL, 2 ) |
| #define IPOPT_SEC_LENGTH 11 |
| #define IPOPT_SEC_UNCLASIFIED 0x0 |
| #define IPOPT_SEC_CONFIDENTIAL 0xF035 |
| #define IPOPT_SEC_EFTO 0x789A |
| #define IPOPT_SEC_MMMM 0xBC4D |
| #define IPOPT_SEC_PROG 0x5E26 |
| #define IPOPT_SEC_RESTRICTED 0xAF13 |
| #define IPOPT_SEC_SECRET 0xD788 |
| #define IPOPT_SEC_TOP_SECRET 0x6BC5 |
| //#define IPOPT_LOOSE_SOURCE 0x83 |
| #define IPOPT_LSRR IPOPT_TYPE( IPOPT_COPY, IPOPT_CONTROL, 3 ) |
| //#define IPOPT_STRICT_SOURCE 0x89 |
| #define IPOPT_SSRR IPOPT_TYPE( IPOPT_COPY, IPOPT_CONTROL, 9 ) |
| //#define IPOPT_RECORD_ROUTE 0x07 |
| #define IPOPT_RR IPOPT_TYPE( IPOPT_COPY, IPOPT_CONTROL, 7 ) |
| //#define IPOPT_STREAM_IDENTIFIER 0x88 |
| #define IPOPT_SID IPOPT_TYPE( IPOPT_COPY, IPOPT_CONTROL, 8 ) |
| #define IPOPT_SID_LENGTH 4 |
| //#define IPOPT_INTERNET_TIMESTAMP 0x44 |
| #define IPOPT_TIMESTAMP IPOPT_TYPE( IPOPT_COPY, IPOPT_MEASUREMENT, 4 ) |
| #define IPOPT_CIPSO IPOPT_TYPE( IPOPT_COPY, IPOPT_CONTROL, 5 ) |
| |
| #define IPVERSION 4 |
| #define MAXTTL 255 |
| #define IPDEFTTL 64 |
| |
| #define IPOPT_OPTVAL 0 |
| #define IPOPT_OLEN 1 |
| #define IPOPT_OFFSET 2 |
| #define IPOPT_MINOFF 4 |
| #define MAX_IPOPTLEN 40 |
| #define IPOPT_NOP IPOPT_NOOP |
| #define IPOPT_EOL IPOPT_END |
| #define IPOPT_TS IPOPT_TIMESTAMP |
| |
| #define IPOPT_TS_TSONLY 0 /* timestamps only */ |
| #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */ |
| #define IPOPT_TS_PRESPEC 3 /* specified modules only */ |
| |
| #endif |
| |
| /** @} |
| */ |
| Property changes: |
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| Added: svn:eol-style |
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| +native |
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| \ No newline at end of property |
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