249 lines
12 KiB
C
249 lines
12 KiB
C
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/************************************************************************************************************
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* net/uip/uip-ipopt.h
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*
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* Defines values for the IP header options
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*
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* Copyright (C) 2010 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************************************/
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#ifndef __NET_UIP_IPOPT_H
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#define __NET_UIP_IPOPT_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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/************************************************************************************************************
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* Pre-processor Definitions
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************************************************************************************************************/
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/* IP Header Options:
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*
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* The basic 20-byte IP header can be extended by up to another 40 bytes
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* (in units of 4 bytes) to provide IP options. The format of a single IP
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* option is as follows:
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*
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* Single byte options:
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*
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* Type: 8-bits
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*
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* Multi-byte options:
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*
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* Type: 8-bits
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* Length: 8-bits
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* Pointer: 8-bits:
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* Option Data: (depends on Length)
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*
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* The IP Option Type byte consists of the following subfields:
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*/
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#define IPOPT_TYPE_OPTION_SHIFT (0) /* Bits 0-5: Option number*/
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#define IPOPT_TYPE_OPTION_MASK (0x1f << IPOPT_TYPE_OPTION_SHIFT)
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# define IPOPT_TYPE_OPTION_END (0 << IPOPT_TYPE_OPTION_SHIFT) /* End of options list (RFC 791) */
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# define IPOPT_TYPE_OPTION_NOOP (1 << IPOPT_TYPE_OPTION_SHIFT) /* No operation (RFC 791) */
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# define IPOPT_TYPE_OPTION_SEC (2 << IPOPT_TYPE_OPTION_SHIFT) /* Security (RFC 791, 1108) */
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# define IPOPT_TYPE_OPTION_LSRR (3 << IPOPT_TYPE_OPTION_SHIFT) /* Loose source and record route (RFC 791) */
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# define IPOPT_TYPE_OPTION_TIMESTAMP (4 << IPOPT_TYPE_OPTION_SHIFT) /* Timestamp (RFC 781, 791) */
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# define IPORT_TYPE_OPTION_EXTSEC (5 << IPOPT_TYPE_OPTION_SHIFT) /* Extended security (RFC 1108) */
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# define IPORT_TYPE_OPTION_COMMSEC (6 << IPOPT_TYPE_OPTION_SHIFT) /* Commercial security */
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# define IPOPT_TYPE_OPTION_RR (7 << IPOPT_TYPE_OPTION_SHIFT) /* Record route (RFC 791) */
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# define IPOPT_TYPE_OPTION_SSID (8 << IPOPT_TYPE_OPTION_SHIFT) /* Stream ID (RFC 791, 1122) */
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# define IPOPT_TYPE_OPTION_SSRR (9 << IPOPT_TYPE_OPTION_SHIFT) /* Strict source and record route (RFC 791) */
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# define IPOPT_TYPE_OPTION_EXPMEAS (10 << IPOPT_TYPE_OPTION_SHIFT) /* Experimental measurement */
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# define IPOPT_TYPE_OPTION_MTUPROBE (11 << IPOPT_TYPE_OPTION_SHIFT) /* MTU Probe (RFC 1063) */
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# define IPOPT_TYPE_OPTION_MTUREPLY (12 << IPOPT_TYPE_OPTION_SHIFT) /* MTU Reply (RFC 1063) */
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# define IPOPT_TYPE_OPTION_EXPFC (13 << IPOPT_TYPE_OPTION_SHIFT) /* Experimental flow control */
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# define IPOPT_TYPE_OPTION_EXPAC (14 << IPOPT_TYPE_OPTION_SHIFT) /* Experimental access control */
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# define IPOPT_TYPE_OPTION_ENCODE (15 << IPOPT_TYPE_OPTION_SHIFT) /* ENCODE */
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# define IPOPT_TYPE_OPTION_IMITD (16 << IPOPT_TYPE_OPTION_SHIFT) /* IMI traffic descriptor */
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# define IPOPT_TYPE_OPTION_EXTIP (17 << IPOPT_TYPE_OPTION_SHIFT) /* Extended IP (RFC 1385) */
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# define IPOPT_TYPE_OPTION_TR (18 << IPOPT_TYPE_OPTION_SHIFT) /* Traceroute (RFC 1393) */
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# define IPOPT_TYPE_OPTION_ADDREXT (19 << IPOPT_TYPE_OPTION_SHIFT) /* Address extension (RFC 1475) */
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# define IPOPT_TYPE_OPTION_RA (20 << IPOPT_TYPE_OPTION_SHIFT) /* Router alert (RFC 2113) */
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# define IPOPT_TYPE_OPTION_SDBM (21 << IPOPT_TYPE_OPTION_SHIFT) /* Selective direct broadcast mode (RFC 1770) */
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# define IPOPT_TYPE_OPTION_DPS (23 << IPOPT_TYPE_OPTION_SHIFT) /* Dynamic packet state */
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# define IPOPT_TYPE_OPTION_UMP (24 << IPOPT_TYPE_OPTION_SHIFT) /* Upstream multicast packet */
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# define IPOPT_TYPE_OPTION_QS (25 << IPOPT_TYPE_OPTION_SHIFT) /* Quick start (RFC 4782) */
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# define IPOPT_TYPE_OPTION_EXP3692 (30 << IPOPT_TYPE_OPTION_SHIFT) /* RFC 3692-style experiment (RFC 4782) */
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#define IPOPT_TYPE_CLASS_SHIFT (5) /* Bits 5-6: Class */
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#define IPOPT_TYPE_CLASS_MASK (3 << IPOPT_TYPE_CLASS_SHIFT)
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# define IPOPT_TYPE_CLASS_CTRL (0 << IPOPT_TYPE_CLASS_SHIFT) /* Control */
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# define IPOPT_TYPE_CLASS_MEASURE (2 << IPOPT_TYPE_CLASS_SHIFT) /* Debugging and measurement */
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#define IPOPT_TYPE_COPIED (1 << 7) /* Bit 7: IP layer must copy option to each fragment */
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#define IPOPT_TYPE_NOTCOPIED (0)
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/* IP Option encoding macros */
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#define IPOPT_MKTYPE(copied,class,option) (copied|class|option)
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#define IPOPT_MKOPTION8(copied,class,option) \
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((uint8_t)IPOPT_MKTYPE(copied,class,option))
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#define IPOPT_MKOPTION32(type,len,ptr,data) \
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((uint32_t)(type) << 24 | (uint32_t)(len) << 16) | \
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(uint32_t)(ptr) << 8 | (uint32_t)(data))
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/* Option Copy Class Length Description References
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* ------ ---- ----- --------- ------------------------------------------------
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* 0 0 0 1 End of options list. RFC 791
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* 1 0 0 1 NOP. RFC 791
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* 2 1 0 11 Security. RFC 791, RFC 1108
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* 3 1 0 variable Loose Source Route. RFC 791
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* 4 0 2 variable Time stamp. RFC 781, RFC 791
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* 5 1 0 3-31 Extended Security. RFC 1108
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* 6 1 0 Commercial Security.
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* 7 0 0 variable Record Route. RFC 791
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* 8 1 0 4 Stream Identifier. RFC 791, RFC 1122
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* 9 1 0 variable Strict Source Route. RFC 791
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* 10 0 0 Experimental Measurement.
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* 11 0 0 4 MTU Probe. (obsolete). RFC 1063
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* 12 0 0 4 MTU Reply. (obsolete). RFC 1063
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* 13 1 2 Experimental Flow Control.
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* 14 1 0 Expermental Access Control.
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* 15 0 0 ENCODE.
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* 16 1 0 IMI Traffic Descriptor.
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* 17 1 0 variable Extended Internet Protocol. RFC 1385
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* 18 0 2 12 Traceroute. RFC 1393
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* 19 1 0 10 Address Extension. RFC 1475
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* 20 1 0 4 Router Alert. RFC 2113
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* 21 1 0 6-38 Selective Directed Broadcast Mode. RFC 1770
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* 22 1 0
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* 23 1 0 Dynamic Packet State.
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* 24 1 0 Upstream Multicast Packet.
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* 25 0 0 QS, Quick-Start. RFC 4782
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* 26
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* -
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* 29
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* 30 0 0 EXP - RFC3692-style Experiment. RFC 4727
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* 30 0 2 EXP - RFC3692-style Experiment. RFC 4727
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* 30 1 0 EXP - RFC3692-style Experiment RFC 4727
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* 30 1 2 EXP - RFC3692-style Experiment. RFC 4727
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* 31
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*/
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#define IPOTR_END_LEN 1
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#define IPOPT_END_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_END)
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#define IPOTR_NOOP_LEN 1
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#define IPOPT_NOOP_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_NOOP)
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#define IPOPT_SEC_LEN 11
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#define IPOPT_SEC_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_SEC)
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#define IPOPT_LSRR_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_LSRR)
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#define IPOPT_TIMESTAMP_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_MEASURE, IPOPT_TYPE_OPTION_TIMESTAMP)
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#define IPORT_EXTSEC_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPORT_TYPE_OPTION_EXTSEC)
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#define IPORT_COMMSEC_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPORT_TYPE_OPTION_COMMSEC)
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#define IPOPT_RR_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_RR)
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#define IPOPT_SSID_LEN 4
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#define IPOPT_SSID_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_SSID)
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#define IPOPT_SSRR_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_SSRR)
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#define IPOPT_EXPMEAS_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_EXPMEAS)
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#define IPOPT_MTUPROBE_LEN 4
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#define IPOPT_MTUPROBE_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_MTUPROBE)
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#define IPOPT_MTUREPLY_LEN 4
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#define IPOPT_MTUREPLY_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_MTUREPLY)
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#define IPOPT_EXPFC_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_MEASURE, IPOPT_TYPE_OPTION_EXPFC)
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#define IPOPT_EXPAC_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_EXPAC)
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#define IPOPT_ENCODE_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_ENCODE)
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#define IPOPT_IMITD_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_IMITD)
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#define IPOPT_EXTIP_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_EXTIP)
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#define IPOPT_TR_LEN 12
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#define IPOPT_TR_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_MEASURE, IPOPT_TYPE_OPTION_TR)
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#define IPOPT_ADDREXT_LEN 10
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#define IPOPT_ADDREXT_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_ADDREXT)
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#define IPOPT_RA_LEN 4
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#define IPOPT_RA_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_RA)
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#define IPOPT_RA \
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IPOPT_MKOPTION32(IPORT_RA_TYPE, 4, 0, 0)
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#define IPOPT_SDBM_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_SDBM)
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#define IPOPT_DPS_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_DPS)
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#define IPOPT_UMP_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_UMP)
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#define IPOPT_QS_TYPE \
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IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_QS)
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/************************************************************************************************************
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* Public Type Definitions
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************************************************************************************************************/
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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_IPOPT_H */
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