/************************************************************************************************************ * net/uip/uip-ipopt.h * * Defines values for the IP header options * * Copyright (C) 2010 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 NuttX 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 THE COPYRIGHT HOLDERS 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 THE * COPYRIGHT OWNER 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_IPOPT_H #define __NET_UIP_IPOPT_H /************************************************************************************************************ * Included Files ************************************************************************************************************/ #include /************************************************************************************************************ * Pre-processor Definitions ************************************************************************************************************/ /* IP Header Options: * * The basic 20-byte IP header can be extended by up to another 40 bytes * (in units of 4 bytes) to provide IP options. The format of a single IP * option is as follows: * * Single byte options: * * Type: 8-bits * * Multi-byte options: * * Type: 8-bits * Length: 8-bits * Pointer: 8-bits: * Option Data: (depends on Length) * * The IP Option Type byte consists of the following subfields: */ #define IPOPT_TYPE_OPTION_SHIFT (0) /* Bits 0-5: Option number*/ #define IPOPT_TYPE_OPTION_MASK (0x1f << IPOPT_TYPE_OPTION_SHIFT) # define IPOPT_TYPE_OPTION_END (0 << IPOPT_TYPE_OPTION_SHIFT) /* End of options list (RFC 791) */ # define IPOPT_TYPE_OPTION_NOOP (1 << IPOPT_TYPE_OPTION_SHIFT) /* No operation (RFC 791) */ # define IPOPT_TYPE_OPTION_SEC (2 << IPOPT_TYPE_OPTION_SHIFT) /* Security (RFC 791, 1108) */ # define IPOPT_TYPE_OPTION_LSRR (3 << IPOPT_TYPE_OPTION_SHIFT) /* Loose source and record route (RFC 791) */ # define IPOPT_TYPE_OPTION_TIMESTAMP (4 << IPOPT_TYPE_OPTION_SHIFT) /* Timestamp (RFC 781, 791) */ # define IPORT_TYPE_OPTION_EXTSEC (5 << IPOPT_TYPE_OPTION_SHIFT) /* Extended security (RFC 1108) */ # define IPORT_TYPE_OPTION_COMMSEC (6 << IPOPT_TYPE_OPTION_SHIFT) /* Commercial security */ # define IPOPT_TYPE_OPTION_RR (7 << IPOPT_TYPE_OPTION_SHIFT) /* Record route (RFC 791) */ # define IPOPT_TYPE_OPTION_SSID (8 << IPOPT_TYPE_OPTION_SHIFT) /* Stream ID (RFC 791, 1122) */ # define IPOPT_TYPE_OPTION_SSRR (9 << IPOPT_TYPE_OPTION_SHIFT) /* Strict source and record route (RFC 791) */ # define IPOPT_TYPE_OPTION_EXPMEAS (10 << IPOPT_TYPE_OPTION_SHIFT) /* Experimental measurement */ # define IPOPT_TYPE_OPTION_MTUPROBE (11 << IPOPT_TYPE_OPTION_SHIFT) /* MTU Probe (RFC 1063) */ # define IPOPT_TYPE_OPTION_MTUREPLY (12 << IPOPT_TYPE_OPTION_SHIFT) /* MTU Reply (RFC 1063) */ # define IPOPT_TYPE_OPTION_EXPFC (13 << IPOPT_TYPE_OPTION_SHIFT) /* Experimental flow control */ # define IPOPT_TYPE_OPTION_EXPAC (14 << IPOPT_TYPE_OPTION_SHIFT) /* Experimental access control */ # define IPOPT_TYPE_OPTION_ENCODE (15 << IPOPT_TYPE_OPTION_SHIFT) /* ENCODE */ # define IPOPT_TYPE_OPTION_IMITD (16 << IPOPT_TYPE_OPTION_SHIFT) /* IMI traffic descriptor */ # define IPOPT_TYPE_OPTION_EXTIP (17 << IPOPT_TYPE_OPTION_SHIFT) /* Extended IP (RFC 1385) */ # define IPOPT_TYPE_OPTION_TR (18 << IPOPT_TYPE_OPTION_SHIFT) /* Traceroute (RFC 1393) */ # define IPOPT_TYPE_OPTION_ADDREXT (19 << IPOPT_TYPE_OPTION_SHIFT) /* Address extension (RFC 1475) */ # define IPOPT_TYPE_OPTION_RA (20 << IPOPT_TYPE_OPTION_SHIFT) /* Router alert (RFC 2113) */ # define IPOPT_TYPE_OPTION_SDBM (21 << IPOPT_TYPE_OPTION_SHIFT) /* Selective direct broadcast mode (RFC 1770) */ # define IPOPT_TYPE_OPTION_DPS (23 << IPOPT_TYPE_OPTION_SHIFT) /* Dynamic packet state */ # define IPOPT_TYPE_OPTION_UMP (24 << IPOPT_TYPE_OPTION_SHIFT) /* Upstream multicast packet */ # define IPOPT_TYPE_OPTION_QS (25 << IPOPT_TYPE_OPTION_SHIFT) /* Quick start (RFC 4782) */ # define IPOPT_TYPE_OPTION_EXP3692 (30 << IPOPT_TYPE_OPTION_SHIFT) /* RFC 3692-style experiment (RFC 4782) */ #define IPOPT_TYPE_CLASS_SHIFT (5) /* Bits 5-6: Class */ #define IPOPT_TYPE_CLASS_MASK (3 << IPOPT_TYPE_CLASS_SHIFT) # define IPOPT_TYPE_CLASS_CTRL (0 << IPOPT_TYPE_CLASS_SHIFT) /* Control */ # define IPOPT_TYPE_CLASS_MEASURE (2 << IPOPT_TYPE_CLASS_SHIFT) /* Debugging and measurement */ #define IPOPT_TYPE_COPIED (1 << 7) /* Bit 7: IP layer must copy option to each fragment */ #define IPOPT_TYPE_NOTCOPIED (0) /* IP Option encoding macros */ #define IPOPT_MKTYPE(copied,class,option) (copied|class|option) #define IPOPT_MKOPTION8(copied,class,option) \ ((uint8_t)IPOPT_MKTYPE(copied,class,option)) #define IPOPT_MKOPTION32(type,len,ptr,data) \ ((uint32_t)(type) << 24 | (uint32_t)(len) << 16) | \ (uint32_t)(ptr) << 8 | (uint32_t)(data)) /* Option Copy Class Length Description References * ------ ---- ----- --------- ------------------------------------------------ * 0 0 0 1 End of options list. RFC 791 * 1 0 0 1 NOP. RFC 791 * 2 1 0 11 Security. RFC 791, RFC 1108 * 3 1 0 variable Loose Source Route. RFC 791 * 4 0 2 variable Time stamp. RFC 781, RFC 791 * 5 1 0 3-31 Extended Security. RFC 1108 * 6 1 0 Commercial Security. * 7 0 0 variable Record Route. RFC 791 * 8 1 0 4 Stream Identifier. RFC 791, RFC 1122 * 9 1 0 variable Strict Source Route. RFC 791 * 10 0 0 Experimental Measurement. * 11 0 0 4 MTU Probe. (obsolete). RFC 1063 * 12 0 0 4 MTU Reply. (obsolete). RFC 1063 * 13 1 2 Experimental Flow Control. * 14 1 0 Expermental Access Control. * 15 0 0 ENCODE. * 16 1 0 IMI Traffic Descriptor. * 17 1 0 variable Extended Internet Protocol. RFC 1385 * 18 0 2 12 Traceroute. RFC 1393 * 19 1 0 10 Address Extension. RFC 1475 * 20 1 0 4 Router Alert. RFC 2113 * 21 1 0 6-38 Selective Directed Broadcast Mode. RFC 1770 * 22 1 0 * 23 1 0 Dynamic Packet State. * 24 1 0 Upstream Multicast Packet. * 25 0 0 QS, Quick-Start. RFC 4782 * 26 * - * 29 * 30 0 0 EXP - RFC3692-style Experiment. RFC 4727 * 30 0 2 EXP - RFC3692-style Experiment. RFC 4727 * 30 1 0 EXP - RFC3692-style Experiment RFC 4727 * 30 1 2 EXP - RFC3692-style Experiment. RFC 4727 * 31 */ #define IPOTR_END_LEN 1 #define IPOPT_END_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_END) #define IPOTR_NOOP_LEN 1 #define IPOPT_NOOP_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_NOOP) #define IPOPT_SEC_LEN 11 #define IPOPT_SEC_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_SEC) #define IPOPT_LSRR_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_LSRR) #define IPOPT_TIMESTAMP_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_MEASURE, IPOPT_TYPE_OPTION_TIMESTAMP) #define IPORT_EXTSEC_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPORT_TYPE_OPTION_EXTSEC) #define IPORT_COMMSEC_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPORT_TYPE_OPTION_COMMSEC) #define IPOPT_RR_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_RR) #define IPOPT_SSID_LEN 4 #define IPOPT_SSID_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_SSID) #define IPOPT_SSRR_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_SSRR) #define IPOPT_EXPMEAS_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_EXPMEAS) #define IPOPT_MTUPROBE_LEN 4 #define IPOPT_MTUPROBE_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_MTUPROBE) #define IPOPT_MTUREPLY_LEN 4 #define IPOPT_MTUREPLY_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_MTUREPLY) #define IPOPT_EXPFC_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_MEASURE, IPOPT_TYPE_OPTION_EXPFC) #define IPOPT_EXPAC_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_EXPAC) #define IPOPT_ENCODE_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_ENCODE) #define IPOPT_IMITD_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_IMITD) #define IPOPT_EXTIP_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_EXTIP) #define IPOPT_TR_LEN 12 #define IPOPT_TR_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_MEASURE, IPOPT_TYPE_OPTION_TR) #define IPOPT_ADDREXT_LEN 10 #define IPOPT_ADDREXT_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_ADDREXT) #define IPOPT_RA_LEN 4 #define IPOPT_RA_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_RA) #define IPOPT_RA \ IPOPT_MKOPTION32(IPORT_RA_TYPE, 4, 0, 0) #define IPOPT_SDBM_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_SDBM) #define IPOPT_DPS_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_DPS) #define IPOPT_UMP_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_COPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_UMP) #define IPOPT_QS_TYPE \ IPOPT_MKTYPE(IPOPT_TYPE_NOTCOPIED, IPOPT_TYPE_CLASS_CTRL, IPOPT_TYPE_OPTION_QS) /************************************************************************************************************ * Public Type Definitions ************************************************************************************************************/ /************************************************************************************************************ * Public Data ************************************************************************************************************/ /************************************************************************************************************ * Public Function Prototypes ************************************************************************************************************/ #endif /* __NET_UIP_IPOPT_H */