| ip6_id.c (120652) | ip6_id.c (133720) |
|---|---|
| 1/* $KAME: ip6_id.c,v 1.13 2003/09/16 09:11:19 itojun Exp $ */ 2/* $OpenBSD: ip_id.c,v 1.6 2002/03/15 18:19:52 millert Exp $ */ | 1/* $KAME: ip6_id.c,v 1.13 2003/09/16 09:11:19 itojun Exp $ */ 2/* $OpenBSD: ip_id.c,v 1.6 2002/03/15 18:19:52 millert Exp $ */ |
| 3/* $FreeBSD: head/sys/netinet6/ip6_id.c 120652 2003-10-01 21:45:57Z ume $ */ | 3/* $FreeBSD: head/sys/netinet6/ip6_id.c 133720 2004-08-14 15:32:40Z dwmalone $ */ |
| 4 5/* 6 * Copyright (C) 2003 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: --- 69 unchanged lines hidden (view full) --- 81 * The transaction id is determined by: 82 * id[n] = seed xor (g^X[n] mod n) 83 * 84 * Effectivly the id is restricted to the lower (bits - 1) bits, thus 85 * yielding two different cycles by toggling the msb on and off. 86 * This avoids reuse issues caused by reseeding. 87 */ 88 | 4 5/* 6 * Copyright (C) 2003 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: --- 69 unchanged lines hidden (view full) --- 81 * The transaction id is determined by: 82 * id[n] = seed xor (g^X[n] mod n) 83 * 84 * Effectivly the id is restricted to the lower (bits - 1) bits, thus 85 * yielding two different cycles by toggling the msb on and off. 86 * This avoids reuse issues caused by reseeding. 87 */ 88 |
| 89#include "opt_random_ip_id.h" 90 | |
| 91#include <sys/types.h> 92#include <sys/param.h> 93#include <sys/kernel.h> 94#include <sys/socket.h> 95#include <sys/libkern.h> 96 97#include <net/if.h> 98#include <net/route.h> 99#include <netinet/in.h> 100#include <netinet/ip6.h> 101#include <netinet6/ip6_var.h> 102 | 89#include <sys/types.h> 90#include <sys/param.h> 91#include <sys/kernel.h> 92#include <sys/socket.h> 93#include <sys/libkern.h> 94 95#include <net/if.h> 96#include <net/route.h> 97#include <netinet/in.h> 98#include <netinet/ip6.h> 99#include <netinet6/ip6_var.h> 100 |
| 103#ifdef RANDOM_IP_ID 104 | |
| 105#ifndef INT32_MAX 106#define INT32_MAX 0x7fffffffU 107#endif 108 109struct randomtab { 110 const int ru_bits; /* resulting bits */ 111 const long ru_out; /* Time after wich will be reseeded */ 112 const u_int32_t ru_max; /* Uniq cycle, avoid blackjack prediction */ --- 149 unchanged lines hidden (view full) --- 262} 263 264u_int32_t 265ip6_randomflowlabel(void) 266{ 267 268 return randomid(&randomtab_20) & 0xfffff; 269} | 101#ifndef INT32_MAX 102#define INT32_MAX 0x7fffffffU 103#endif 104 105struct randomtab { 106 const int ru_bits; /* resulting bits */ 107 const long ru_out; /* Time after wich will be reseeded */ 108 const u_int32_t ru_max; /* Uniq cycle, avoid blackjack prediction */ --- 149 unchanged lines hidden (view full) --- 258} 259 260u_int32_t 261ip6_randomflowlabel(void) 262{ 263 264 return randomid(&randomtab_20) & 0xfffff; 265} |
| 270 271#endif /* RANDOM_IP_ID */ | |