| alias_sctp.h (186543) | alias_sctp.h (188294) |
|---|---|
| 1/*/* $Id$ */ 2//#ifndef lint 3//static char vcid[] = "$Id$"; 4//#endif /* lint */ | |
| 5/** 6 * @file alias_sctp.h 7 * Copyright (c) 2008, Centre for Advanced Internet Architectures 8 * Swinburne University of Technology, Melbourne, Australia 9 * (CRICOS number 00111D). 10 * | 1/** 2 * @file alias_sctp.h 3 * Copyright (c) 2008, Centre for Advanced Internet Architectures 4 * Swinburne University of Technology, Melbourne, Australia 5 * (CRICOS number 00111D). 6 * |
| 11 * Alias_sctp forms part of the libalias kernel module to handle 12 * Network Address Translation (NAT) for the SCTP protocol. 13 * 14 * This software was developed by David A. Hayes 15 * with leadership and advice from Jason But 16 * 17 * The design is outlined in CAIA technical report number 080618A 18 * (D. Hayes and J. But, "Alias_sctp Version 0.1: SCTP NAT implementation in IPFW") 19 * 20 * Development is part of the CAIA SONATA project, 21 * proposed by Jason But and Grenville Armitage: 22 * http://caia.swin.edu.au/urp/sonata/ 23 * 24 * 25 * This project has been made possible in part by a grant from 26 * the Cisco University Research Program Fund at Community 27 * Foundation Silicon Valley. 28 * 29 * 30 * All rights reserved. 31 * | |
| 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. --- 9 unchanged lines hidden (view full) --- 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 * | 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. --- 9 unchanged lines hidden (view full) --- 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * |
| 32 * Alias_sctp forms part of the libalias kernel module to handle 33 * Network Address Translation (NAT) for the SCTP protocol. 34 * 35 * This software was developed by David A. Hayes 36 * with leadership and advice from Jason But 37 * 38 * The design is outlined in CAIA technical report number 080618A 39 * (D. Hayes and J. But, "Alias_sctp Version 0.1: SCTP NAT implementation in IPFW") 40 * 41 * Development is part of the CAIA SONATA project, 42 * proposed by Jason But and Grenville Armitage: 43 * http://caia.swin.edu.au/urp/sonata/ 44 * 45 * 46 * This project has been made possible in part by a grant from 47 * the Cisco University Research Program Fund at Community 48 * Foundation Silicon Valley. 49 * |
|
| 57 */ | 50 */ |
| 51 52/* $FreeBSD: head/sys/netinet/libalias/alias_sctp.h 188294 2009-02-07 18:49:42Z piso $ */ 53 |
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| 58#ifndef _ALIAS_SCTP_H_ 59#define _ALIAS_SCTP_H_ 60 61#include <sys/param.h> 62#ifdef _KERNEL 63#include <sys/malloc.h> 64#include <sys/module.h> 65#include <sys/kernel.h> --- 65 unchanged lines hidden (view full) --- 131/** 132 * @brief sctp association information 133 * 134 * Structure that contains information about a particular sctp association 135 * currently under Network Address Translation. 136 * Information is stored in network byte order (as is libalias)*** 137 */ 138struct sctp_nat_assoc { | 54#ifndef _ALIAS_SCTP_H_ 55#define _ALIAS_SCTP_H_ 56 57#include <sys/param.h> 58#ifdef _KERNEL 59#include <sys/malloc.h> 60#include <sys/module.h> 61#include <sys/kernel.h> --- 65 unchanged lines hidden (view full) --- 127/** 128 * @brief sctp association information 129 * 130 * Structure that contains information about a particular sctp association 131 * currently under Network Address Translation. 132 * Information is stored in network byte order (as is libalias)*** 133 */ 134struct sctp_nat_assoc { |
| 139 uint32_t l_vtag; /**< local side verification tag */ 140 uint16_t l_port; /**< local side port number */ 141 uint32_t g_vtag; /**< global side verification tag */ 142 uint16_t g_port; /**< global side port number */ 143 struct in_addr l_addr; /**< local ip address */ 144 struct in_addr a_addr; /**< alias ip address */ 145 int state; /**< current state of NAT association */ 146 int TableRegister; /**< stores which look up tables association is registered in */ 147 int exp; /**< timer expiration in seconds from uptime */ 148 int exp_loc; /**< current location in timer_Q */ 149 int num_Gaddr; /**< number of global IP addresses in the list */ 150 LIST_HEAD(sctpGlobalAddresshead,sctp_GlobalAddress) Gaddr; /**< List of global addresses */ 151 LIST_ENTRY (sctp_nat_assoc) list_L; /**< Linked list of pointers for Local table*/ 152 LIST_ENTRY (sctp_nat_assoc) list_G; /**< Linked list of pointers for Global table */ 153 LIST_ENTRY (sctp_nat_assoc) timer_Q; /**< Linked list of pointers for timer Q */ | 135 uint32_t l_vtag; /**< local side verification tag */ 136 uint16_t l_port; /**< local side port number */ 137 uint32_t g_vtag; /**< global side verification tag */ 138 uint16_t g_port; /**< global side port number */ 139 struct in_addr l_addr; /**< local ip address */ 140 struct in_addr a_addr; /**< alias ip address */ 141 int state; /**< current state of NAT association */ 142 int TableRegister; /**< stores which look up tables association is registered in */ 143 int exp; /**< timer expiration in seconds from uptime */ 144 int exp_loc; /**< current location in timer_Q */ 145 int num_Gaddr; /**< number of global IP addresses in the list */ 146 LIST_HEAD(sctpGlobalAddresshead,sctp_GlobalAddress) Gaddr; /**< List of global addresses */ 147 LIST_ENTRY (sctp_nat_assoc) list_L; /**< Linked list of pointers for Local table*/ 148 LIST_ENTRY (sctp_nat_assoc) list_G; /**< Linked list of pointers for Global table */ 149 LIST_ENTRY (sctp_nat_assoc) timer_Q; /**< Linked list of pointers for timer Q */ |
| 154//Using libalias locking 155}; 156 157struct sctp_GlobalAddress { | 150//Using libalias locking 151}; 152 153struct sctp_GlobalAddress { |
| 158 struct in_addr g_addr; 159 LIST_ENTRY (sctp_GlobalAddress) list_Gaddr; /**< Linked list of pointers for Global table */ | 154 struct in_addr g_addr; 155 LIST_ENTRY (sctp_GlobalAddress) list_Gaddr; /**< Linked list of pointers for Global table */ |
| 160}; 161 162/** 163 * @brief SCTP chunk of interest 164 * 165 * The only chunks whose contents are of any interest are the INIT and ASCONF_AddIP 166 */ 167union sctpChunkOfInt { | 156}; 157 158/** 159 * @brief SCTP chunk of interest 160 * 161 * The only chunks whose contents are of any interest are the INIT and ASCONF_AddIP 162 */ 163union sctpChunkOfInt { |
| 168 struct sctp_init *Init; /**< Pointer to Init Chunk */ 169 struct sctp_init_ack *InitAck; /**< Pointer to Init Chunk */ 170 struct sctp_paramhdr *Asconf; /**< Pointer to ASCONF chunk */ | 164 struct sctp_init *Init; /**< Pointer to Init Chunk */ 165 struct sctp_init_ack *InitAck; /**< Pointer to Init Chunk */ 166 struct sctp_paramhdr *Asconf; /**< Pointer to ASCONF chunk */ |
| 171}; 172 173 174/** 175 * @brief SCTP message 176 * 177 * Structure containing the relevant information from the SCTP message 178 */ 179struct sctp_nat_msg { | 167}; 168 169 170/** 171 * @brief SCTP message 172 * 173 * Structure containing the relevant information from the SCTP message 174 */ 175struct sctp_nat_msg { |
| 180 uint16_t msg; /**< one of the key messages defined above */ | 176 uint16_t msg; /**< one of the key messages defined above */ |
| 181#ifdef INET6 | 177#ifdef INET6 |
| 182 // struct ip6_hdr *ip_hdr; /**< pointer to ip packet header */ /*no inet6 support yet*/ | 178 // struct ip6_hdr *ip_hdr; /**< pointer to ip packet header */ /*no inet6 support yet*/ |
| 183#else | 179#else |
| 184 struct ip *ip_hdr; /**< pointer to ip packet header */ | 180 struct ip *ip_hdr; /**< pointer to ip packet header */ |
| 185#endif //#ifdef INET6 | 181#endif //#ifdef INET6 |
| 186 struct sctphdr *sctp_hdr; /**< pointer to sctp common header */ 187 union sctpChunkOfInt sctpchnk; /**< union of pointers to the chunk of interest */ 188 int chunk_length; /**< length of chunk of interest */ | 182 struct sctphdr *sctp_hdr; /**< pointer to sctp common header */ 183 union sctpChunkOfInt sctpchnk; /**< union of pointers to the chunk of interest */ 184 int chunk_length; /**< length of chunk of interest */ |
| 189}; 190 191 192/** 193 * @brief sctp nat timer queue structure 194 * 195 */ 196 197struct sctp_nat_timer { | 185}; 186 187 188/** 189 * @brief sctp nat timer queue structure 190 * 191 */ 192 193struct sctp_nat_timer { |
| 198 int loc_time; /**< time in seconds for the current location in the queue */ 199 int cur_loc; /**< index of the current location in the circular queue */ 200 LIST_HEAD(sctpTimerQ,sctp_nat_assoc) *TimerQ; /**< List of associations at this position in the timer Q */ | 194 int loc_time; /**< time in seconds for the current location in the queue */ 195 int cur_loc; /**< index of the current location in the circular queue */ 196 LIST_HEAD(sctpTimerQ,sctp_nat_assoc) *TimerQ; /**< List of associations at this position in the timer Q */ |
| 201}; 202 203 204 205#endif //#ifndef _ALIAS_SCTP_H | 197}; 198 199 200 201#endif //#ifndef _ALIAS_SCTP_H |