Files
strongswan-ext/linux/net/ipsec/ipsec_init.c
T
Martin Willi 997358a6c4 - import of strongswan-2.7.0
- applied patch for charon
2006-04-28 07:14:48 +00:00

756 lines
23 KiB
C

/*
* @(#) Initialization code.
* Copyright (C) 1996, 1997 John Ioannidis.
* Copyright (C) 1998, 1999, 2000, 2001, 2002 Richard Guy Briggs <rgb@freeswan.org>
* 2001 Michael Richardson <mcr@freeswan.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* /proc system code was split out into ipsec_proc.c after rev. 1.70.
*
*/
char ipsec_init_c_version[] = "RCSID $Id: ipsec_init.c,v 1.3 2004/06/13 19:57:49 as Exp $";
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/kernel.h> /* printk() */
#include "freeswan/ipsec_param.h"
#ifdef MALLOC_SLAB
# include <linux/slab.h> /* kmalloc() */
#else /* MALLOC_SLAB */
# include <linux/malloc.h> /* kmalloc() */
#endif /* MALLOC_SLAB */
#include <linux/errno.h> /* error codes */
#include <linux/types.h> /* size_t */
#include <linux/interrupt.h> /* mark_bh */
#include <linux/netdevice.h> /* struct device, and other headers */
#include <linux/etherdevice.h> /* eth_type_trans */
#include <linux/ip.h> /* struct iphdr */
#include <linux/in.h> /* struct sockaddr_in */
#include <linux/skbuff.h>
#include <linux/random.h> /* get_random_bytes() */
#include <freeswan.h>
#ifdef SPINLOCK
# ifdef SPINLOCK_23
# include <linux/spinlock.h> /* *lock* */
# else /* 23_SPINLOCK */
# include <asm/spinlock.h> /* *lock* */
# endif /* 23_SPINLOCK */
#endif /* SPINLOCK */
#ifdef NET_21
# include <asm/uaccess.h>
# include <linux/in6.h>
#endif /* NET_21 */
#include <asm/checksum.h>
#include <net/ip.h>
#ifdef CONFIG_PROC_FS
# include <linux/proc_fs.h>
#endif /* CONFIG_PROC_FS */
#ifdef NETLINK_SOCK
# include <linux/netlink.h>
#else
# include <net/netlink.h>
#endif
#include "freeswan/radij.h"
#include "freeswan/ipsec_life.h"
#include "freeswan/ipsec_stats.h"
#include "freeswan/ipsec_sa.h"
#include "freeswan/ipsec_encap.h"
#include "freeswan/ipsec_radij.h"
#include "freeswan/ipsec_xform.h"
#include "freeswan/ipsec_tunnel.h"
#include "freeswan/ipsec_rcv.h"
#include "freeswan/ipsec_ah.h"
#include "freeswan/ipsec_esp.h"
#ifdef CONFIG_IPSEC_IPCOMP
# include "freeswan/ipcomp.h"
#endif /* CONFIG_IPSEC_IPCOMP */
#include "freeswan/ipsec_proto.h"
#include "freeswan/ipsec_alg.h"
#include <pfkeyv2.h>
#include <pfkey.h>
#if !defined(CONFIG_IPSEC_ESP) && !defined(CONFIG_IPSEC_AH)
#error "kernel configuration must include ESP or AH"
#endif
/*
* seems to be present in 2.4.10 (Linus), but also in some RH and other
* distro kernels of a lower number.
*/
#ifdef MODULE_LICENSE
MODULE_LICENSE("GPL");
#endif
#ifdef CONFIG_IPSEC_DEBUG
int debug_eroute = 0;
int debug_spi = 0;
int debug_netlink = 0;
#endif /* CONFIG_IPSEC_DEBUG */
struct prng ipsec_prng;
extern int ipsec_device_event(struct notifier_block *dnot, unsigned long event, void *ptr);
/*
* the following structure is required so that we receive
* event notifications when network devices are enabled and
* disabled (ifconfig up and down).
*/
static struct notifier_block ipsec_dev_notifier={
ipsec_device_event,
NULL,
0
};
#ifdef CONFIG_SYSCTL
extern int ipsec_sysctl_register(void);
extern void ipsec_sysctl_unregister(void);
#endif
static inline int
freeswan_inet_add_protocol(struct inet_protocol *prot, unsigned protocol)
{
#ifdef NETDEV_25
return inet_add_protocol(prot, protocol);
#else
inet_add_protocol(prot);
return 0;
#endif
}
static inline int
freeswan_inet_del_protocol(struct inet_protocol *prot, unsigned protocol)
{
#ifdef NETDEV_25
return inet_del_protocol(prot, protocol);
#else
inet_del_protocol(prot);
return 0;
#endif
}
/* void */
int
ipsec_init(void)
{
int error = 0;
unsigned char seed[256];
#ifdef CONFIG_IPSEC_ENC_3DES
extern int des_check_key;
/* turn off checking of keys */
des_check_key=0;
#endif /* CONFIG_IPSEC_ENC_3DES */
KLIPS_PRINT(1, "klips_info:ipsec_init: "
"KLIPS startup, FreeS/WAN IPSec version: %s\n",
ipsec_version_code());
error |= ipsec_proc_init();
#ifdef SPINLOCK
ipsec_sadb.sadb_lock = SPIN_LOCK_UNLOCKED;
#else /* SPINLOCK */
ipsec_sadb.sadb_lock = 0;
#endif /* SPINLOCK */
#ifndef SPINLOCK
tdb_lock.lock = 0;
eroute_lock.lock = 0;
#endif /* !SPINLOCK */
error |= ipsec_sadb_init();
error |= ipsec_radijinit();
error |= pfkey_init();
error |= register_netdevice_notifier(&ipsec_dev_notifier);
#ifdef CONFIG_IPSEC_ESP
freeswan_inet_add_protocol(&esp_protocol, IPPROTO_ESP);
#endif /* CONFIG_IPSEC_ESP */
#ifdef CONFIG_IPSEC_AH
freeswan_inet_add_protocol(&ah_protocol, IPPROTO_AH);
#endif /* CONFIG_IPSEC_AH */
/* we never actually link IPCOMP to the stack */
#ifdef IPCOMP_USED_ALONE
#ifdef CONFIG_IPSEC_IPCOMP
freeswan_inet_add_protocol(&comp_protocol, IPPROTO_COMP);
#endif /* CONFIG_IPSEC_IPCOMP */
#endif
error |= ipsec_tunnel_init_devices();
#ifdef CONFIG_SYSCTL
error |= ipsec_sysctl_register();
#endif
#ifdef CONFIG_IPSEC_ALG
ipsec_alg_init();
#endif
get_random_bytes((void *)seed, sizeof(seed));
prng_init(&ipsec_prng, seed, sizeof(seed));
return error;
}
/* void */
int
ipsec_cleanup(void)
{
int error = 0;
#ifdef CONFIG_SYSCTL
ipsec_sysctl_unregister();
#endif
KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
"klips_debug:ipsec_cleanup: "
"calling ipsec_tunnel_cleanup_devices.\n");
error |= ipsec_tunnel_cleanup_devices();
KLIPS_PRINT(debug_netlink, "called ipsec_tunnel_cleanup_devices");
/* we never actually link IPCOMP to the stack */
#ifdef IPCOMP_USED_ALONE
#ifdef CONFIG_IPSEC_IPCOMP
if (freeswan_inet_del_protocol(&comp_protocol, IPPROTO_COMP) < 0)
printk(KERN_INFO "klips_debug:ipsec_cleanup: "
"comp close: can't remove protocol\n");
#endif /* CONFIG_IPSEC_IPCOMP */
#endif /* IPCOMP_USED_ALONE */
#ifdef CONFIG_IPSEC_AH
if (freeswan_inet_del_protocol(&ah_protocol, IPPROTO_AH) < 0)
printk(KERN_INFO "klips_debug:ipsec_cleanup: "
"ah close: can't remove protocol\n");
#endif /* CONFIG_IPSEC_AH */
#ifdef CONFIG_IPSEC_ESP
if (freeswan_inet_del_protocol(&esp_protocol, IPPROTO_ESP) < 0)
printk(KERN_INFO "klips_debug:ipsec_cleanup: "
"esp close: can't remove protocol\n");
#endif /* CONFIG_IPSEC_ESP */
error |= unregister_netdevice_notifier(&ipsec_dev_notifier);
KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
"klips_debug:ipsec_cleanup: "
"calling ipsec_sadb_cleanup.\n");
error |= ipsec_sadb_cleanup(0);
error |= ipsec_sadb_free();
KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
"klips_debug:ipsec_cleanup: "
"calling ipsec_radijcleanup.\n");
error |= ipsec_radijcleanup();
KLIPS_PRINT(debug_pfkey, /* debug_tunnel & DB_TN_INIT, */
"klips_debug:ipsec_cleanup: "
"calling pfkey_cleanup.\n");
error |= pfkey_cleanup();
ipsec_proc_cleanup();
prng_final(&ipsec_prng);
return error;
}
#ifdef MODULE
int
init_module(void)
{
int error = 0;
error |= ipsec_init();
return error;
}
int
cleanup_module(void)
{
int error = 0;
KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
"klips_debug:cleanup_module: "
"calling ipsec_cleanup.\n");
error |= ipsec_cleanup();
KLIPS_PRINT(1, "klips_info:cleanup_module: "
"ipsec module unloaded.\n");
return error;
}
#endif /* MODULE */
/*
* $Log: ipsec_init.c,v $
* Revision 1.3 2004/06/13 19:57:49 as
* removed inclusion of ipsec_netlink.h
*
* Revision 1.2 2004/03/22 21:53:19 as
* merged alg-0.8.1 branch with HEAD
*
* Revision 1.1.4.1 2004/03/16 09:48:19 as
* alg-0.8.1rc12 patch merged
*
* Revision 1.1 2004/03/15 20:35:26 as
* added files from freeswan-2.04-x509-1.5.3
*
* Revision 1.89 2003/07/31 22:47:16 mcr
* preliminary (untested by FS-team) 2.5 patches.
*
* Revision 1.88 2003/06/22 20:05:36 mcr
* clarified why IPCOMP was not being registered, and put a new
* #ifdef in rather than #if 0.
*
* Revision 1.87 2002/09/20 15:40:51 rgb
* Added a lock to the global ipsec_sadb struct for future use.
* Split ipsec_sadb_cleanup from new funciton ipsec_sadb_free to avoid problem
* of freeing newly created structures when clearing the reftable upon startup
* to start from a known state.
*
* Revision 1.86 2002/08/15 18:39:15 rgb
* Move ipsec_prng outside debug code.
*
* Revision 1.85 2002/05/14 02:35:29 rgb
* Change reference to tdb to ipsa.
*
* Revision 1.84 2002/04/24 07:55:32 mcr
* #include patches and Makefiles for post-reorg compilation.
*
* Revision 1.83 2002/04/24 07:36:28 mcr
* Moved from ./klips/net/ipsec/ipsec_init.c,v
*
* Revision 1.82 2002/04/20 00:12:25 rgb
* Added esp IV CBC attack fix, disabled.
*
* Revision 1.81 2002/04/09 16:13:32 mcr
* switch license to straight GPL.
*
* Revision 1.80 2002/03/24 07:34:08 rgb
* Sanity check for at least one of AH or ESP configured.
*
* Revision 1.79 2002/02/05 22:55:15 mcr
* added MODULE_LICENSE declaration.
* This macro does not appear in all kernel versions (see comment).
*
* Revision 1.78 2002/01/29 17:17:55 mcr
* moved include of ipsec_param.h to after include of linux/kernel.h
* otherwise, it seems that some option that is set in ipsec_param.h
* screws up something subtle in the include path to kernel.h, and
* it complains on the snprintf() prototype.
*
* Revision 1.77 2002/01/29 04:00:51 mcr
* more excise of kversions.h header.
*
* Revision 1.76 2002/01/29 02:13:17 mcr
* introduction of ipsec_kversion.h means that include of
* ipsec_param.h must preceed any decisions about what files to
* include to deal with differences in kernel source.
*
* Revision 1.75 2001/11/26 09:23:48 rgb
* Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
*
* Revision 1.74 2001/11/22 05:44:11 henry
* new version stuff
*
* Revision 1.71.2.2 2001/10/22 20:51:00 mcr
* explicitely set des_check_key.
*
* Revision 1.71.2.1 2001/09/25 02:19:39 mcr
* /proc manipulation code moved to new ipsec_proc.c
*
* Revision 1.73 2001/11/06 19:47:17 rgb
* Changed lifetime_packets to uint32 from uint64.
*
* Revision 1.72 2001/10/18 04:45:19 rgb
* 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
* lib/freeswan.h version macros moved to lib/kversions.h.
* Other compiler directive cleanups.
*
* Revision 1.71 2001/09/20 15:32:45 rgb
* Minor pfkey lifetime fixes.
*
* Revision 1.70 2001/07/06 19:51:21 rgb
* Added inbound policy checking code for IPIP SAs.
*
* Revision 1.69 2001/06/14 19:33:26 rgb
* Silence startup message for console, but allow it to be logged.
* Update copyright date.
*
* Revision 1.68 2001/05/29 05:14:36 rgb
* Added PMTU to /proc/net/ipsec_tncfg output. See 'man 5 ipsec_tncfg'.
*
* Revision 1.67 2001/05/04 16:34:52 rgb
* Rremove erroneous checking of return codes for proc_net_* in 2.4.
*
* Revision 1.66 2001/05/03 19:40:34 rgb
* Check error return codes in startup and shutdown.
*
* Revision 1.65 2001/02/28 05:03:27 rgb
* Clean up and rationalise startup messages.
*
* Revision 1.64 2001/02/27 22:24:53 rgb
* Re-formatting debug output (line-splitting, joining, 1arg/line).
* Check for satoa() return codes.
*
* Revision 1.63 2000/11/29 20:14:06 rgb
* Add src= to the output of /proc/net/ipsec_spi and delete dst from IPIP.
*
* Revision 1.62 2000/11/06 04:31:24 rgb
* Ditched spin_lock_irqsave in favour of spin_lock_bh.
* Fixed longlong for pre-2.4 kernels (Svenning).
* Add Svenning's adaptive content compression.
* Disabled registration of ipcomp handler.
*
* Revision 1.61 2000/10/11 13:37:54 rgb
* #ifdef out debug print that causes proc/net/ipsec_version to oops.
*
* Revision 1.60 2000/09/20 03:59:01 rgb
* Change static info functions to DEBUG_NO_STATIC to reveal function names
* in oopsen.
*
* Revision 1.59 2000/09/16 01:06:26 rgb
* Added cast of var to silence compiler warning about long fed to int
* format.
*
* Revision 1.58 2000/09/15 11:37:01 rgb
* Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
* IPCOMP zlib deflate code.
*
* Revision 1.57 2000/09/12 03:21:50 rgb
* Moved radij_c_version printing to ipsec_version_get_info().
* Reformatted ipsec_version_get_info().
* Added sysctl_{,un}register() calls.
*
* Revision 1.56 2000/09/08 19:16:50 rgb
* Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
* Removed all references to CONFIG_IPSEC_PFKEYv2.
*
* Revision 1.55 2000/08/30 05:19:03 rgb
* Cleaned up no longer used spi_next, netlink register/unregister, other
* minor cleanup.
* Removed cruft replaced by TDB_XFORM_NAME.
* Removed all the rest of the references to tdb_spi, tdb_proto, tdb_dst.
* Moved debug version strings to printk when /proc/net/ipsec_version is
* called.
*
* Revision 1.54 2000/08/20 18:31:05 rgb
* Changed cosmetic alignment in spi_info.
* Changed addtime and usetime to use actual value which is relative
* anyways, as intended. (Momchil)
*
* Revision 1.53 2000/08/18 17:37:03 rgb
* Added an (int) cast to shut up the compiler...
*
* Revision 1.52 2000/08/01 14:51:50 rgb
* Removed _all_ remaining traces of DES.
*
* Revision 1.51 2000/07/25 20:41:22 rgb
* Removed duplicate parameter in spi_getinfo.
*
* Revision 1.50 2000/07/17 03:21:45 rgb
* Removed /proc/net/ipsec_spinew.
*
* Revision 1.49 2000/06/28 05:46:51 rgb
* Renamed ivlen to iv_bits for consistency.
* Changed output of add and use times to be relative to now.
*
* Revision 1.48 2000/05/11 18:26:10 rgb
* Commented out calls to netlink_attach/detach to avoid activating netlink
* in the kenrel config.
*
* Revision 1.47 2000/05/10 22:35:26 rgb
* Comment out most of the startup version information.
*
* Revision 1.46 2000/03/22 16:15:36 rgb
* Fixed renaming of dev_get (MB).
*
* Revision 1.45 2000/03/16 06:40:48 rgb
* Hardcode PF_KEYv2 support.
*
* Revision 1.44 2000/01/22 23:19:20 rgb
* Simplified code to use existing macro TDB_XFORM_NAME().
*
* Revision 1.43 2000/01/21 06:14:04 rgb
* Print individual stats only if non-zero.
* Removed 'bits' from each keylength for brevity.
* Shortened lifetimes legend for brevity.
* Changed wording from 'last_used' to the clearer 'idle'.
*
* Revision 1.42 1999/12/31 14:57:19 rgb
* MB fix for new dummy-less proc_get_info in 2.3.35.
*
* Revision 1.41 1999/11/23 23:04:03 rgb
* Use provided macro ADDRTOA_BUF instead of hardcoded value.
* Sort out pfkey and freeswan headers, putting them in a library path.
*
* Revision 1.40 1999/11/18 18:47:01 rgb
* Added dynamic proc registration for 2.3.25+.
* Changed all device registrations for static linking to
* dynamic to reduce the number and size of patches.
* Changed all protocol registrations for static linking to
* dynamic to reduce the number and size of patches.
*
* Revision 1.39 1999/11/18 04:12:07 rgb
* Replaced all kernel version macros to shorter, readable form.
* Added Marc Boucher's 2.3.25 proc patches.
* Converted all PROC_FS entries to dynamic to reduce kernel patching.
* Added CONFIG_PROC_FS compiler directives in case it is shut off.
*
* Revision 1.38 1999/11/17 15:53:38 rgb
* Changed all occurrences of #include "../../../lib/freeswan.h"
* to #include <freeswan.h> which works due to -Ilibfreeswan in the
* klips/net/ipsec/Makefile.
*
* Revision 1.37 1999/10/16 04:23:06 rgb
* Add stats for replaywin_errs, replaywin_max_sequence_difference,
* authentication errors, encryption size errors, encryption padding
* errors, and time since last packet.
*
* Revision 1.36 1999/10/16 00:30:47 rgb
* Added SA lifetime counting.
*
* Revision 1.35 1999/10/15 22:14:00 rgb
* Clean out cruft.
*
* Revision 1.34 1999/10/03 18:46:28 rgb
* Spinlock fixes for 2.0.xx and 2.3.xx.
*
* Revision 1.33 1999/10/01 17:08:10 rgb
* Disable spinlock init.
*
* Revision 1.32 1999/10/01 16:22:24 rgb
* Switch from assignment init. to functional init. of spinlocks.
*
* Revision 1.31 1999/10/01 15:44:52 rgb
* Move spinlock header include to 2.1> scope.
*
* Revision 1.30 1999/10/01 00:00:16 rgb
* Added eroute structure locking.
* Added tdb structure locking.
* Minor formatting changes.
* Add call to initialize tdb hash table.
*
* Revision 1.29 1999/09/23 20:22:40 rgb
* Enable, tidy and fix network notifier code.
*
* Revision 1.28 1999/09/18 11:39:56 rgb
* Start to add (disabled) netdevice notifier code.
*
* Revision 1.27 1999/08/28 08:24:47 rgb
* Add compiler directives to compile cleanly without debugging.
*
* Revision 1.26 1999/08/06 16:03:22 rgb
* Correct error messages on failure to unload /proc entries.
*
* Revision 1.25 1999/08/03 17:07:25 rgb
* Report device MTU, not private MTU.
*
* Revision 1.24 1999/05/25 22:24:37 rgb
* /PROC/NET/ipsec* init problem fix.
*
* Revision 1.23 1999/05/25 02:16:38 rgb
* Make modular proc_fs entries dynamic and fix for 2.2.x.
*
* Revision 1.22 1999/05/09 03:25:35 rgb
* Fix bug introduced by 2.2 quick-and-dirty patch.
*
* Revision 1.21 1999/05/05 22:02:30 rgb
* Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
*
* Revision 1.20 1999/04/29 15:15:50 rgb
* Fix undetected iv_len reporting bug.
* Add sanity checking for null pointer to private data space.
* Add return values to init and cleanup functions.
*
* Revision 1.19 1999/04/27 19:24:44 rgb
* Added /proc/net/ipsec_klipsdebug support for reading the current debug
* settings.
* Instrument module load/init/unload.
*
* Revision 1.18 1999/04/15 15:37:24 rgb
* Forward check changes from POST1_00 branch.
*
* Revision 1.15.2.3 1999/04/13 20:29:19 rgb
* /proc/net/ipsec_* cleanup.
*
* Revision 1.15.2.2 1999/04/02 04:28:23 rgb
* /proc/net/ipsec_* formatting enhancements.
*
* Revision 1.15.2.1 1999/03/30 17:08:33 rgb
* Add pfkey initialisation.
*
* Revision 1.17 1999/04/11 00:28:57 henry
* GPL boilerplate
*
* Revision 1.16 1999/04/06 04:54:25 rgb
* Fix/Add RCSID Id: and Log: bits to make PHMDs happy. This includes
* patch shell fixes.
*
* Revision 1.15 1999/02/24 20:15:07 rgb
* Update output format.
*
* Revision 1.14 1999/02/17 16:49:39 rgb
* Convert DEBUG_IPSEC to KLIPS_PRINT
* Ditch NET_IPIP dependancy.
*
* Revision 1.13 1999/01/26 02:06:37 rgb
* Remove ah/esp switching on include files.
* Removed CONFIG_IPSEC_ALGO_SWITCH macro.
* Removed dead code.
* Remove references to INET_GET_PROTOCOL.
*
* Revision 1.12 1999/01/22 06:19:18 rgb
* Cruft clean-out.
* 64-bit clean-up.
* Added algorithm switch code.
*
* Revision 1.11 1998/12/01 05:54:53 rgb
* Cleanup and order debug version output.
*
* Revision 1.10 1998/11/30 13:22:54 rgb
* Rationalised all the klips kernel file headers. They are much shorter
* now and won't conflict under RH5.2.
*
* Revision 1.9 1998/11/10 05:35:13 rgb
* Print direction in/out flag from /proc/net/ipsec_spi.
*
* Revision 1.8 1998/10/27 13:48:10 rgb
* Cleaned up /proc/net/ipsec_* filesystem for easy parsing by scripts.
* Fixed less(1) truncated output bug.
* Code clean-up.
*
* Revision 1.7 1998/10/22 06:43:16 rgb
* Convert to use satoa for printk.
*
* Revision 1.6 1998/10/19 14:24:35 rgb
* Added inclusion of freeswan.h.
*
* Revision 1.5 1998/10/09 04:43:35 rgb
* Added 'klips_debug' prefix to all klips printk debug statements.
*
* Revision 1.4 1998/07/27 21:50:22 rgb
* Not necessary to traverse mask tree for /proc/net/ipsec_eroute.
*
* Revision 1.3 1998/06/25 19:51:20 rgb
* Clean up #endif comments.
* Shift debugging comment control for procfs to debug_tunnel.
* Make proc_dir_entries visible to rest of kernel for static link.
* Replace hardwired fileperms with macros.
* Use macros for procfs inode numbers.
* Rearrange initialisations between ipsec_init and module_init as appropriate
* for static loading.
*
* Revision 1.2 1998/06/23 02:55:43 rgb
* Slightly quieted init-time messages.
* Re-introduced inet_add_protocol after it mysteriously disappeared...
* Check for and warn of absence of IPIP protocol on install of module.
* Move tdbcleanup to ipsec_xform.c.
*
* Revision 1.10 1998/06/18 21:29:04 henry
* move sources from klips/src to klips/net/ipsec, to keep stupid kernel
* build scripts happier in presence of symbolic links
*
* Revision 1.9 1998/06/14 23:49:40 rgb
* Clarify version reporting on module loading.
*
* Revision 1.8 1998/06/11 05:54:23 rgb
* Added /proc/net/ipsec_version to report freeswan and transform versions.
* Added /proc/net/ipsec_spinew to generate new and unique spi's..
* Fixed /proc/net/ipsec_tncfg bug.
*
* Revision 1.7 1998/05/25 20:23:13 rgb
* proc_register changed to dynamic registration to avoid arbitrary inode
* numbers.
*
* Implement memory recovery from tdb and eroute tables.
*
* Revision 1.6 1998/05/21 13:08:58 rgb
* Rewrote procinfo subroutines to avoid *bad things* when more that 3k of
* information is available for printout.
*
* Revision 1.5 1998/05/18 21:29:48 rgb
* Cleaned up /proc/net/ipsec_* output, including a title line, algorithm
* names instead of numbers, standard format for numerical output base,
* whitespace for legibility, and the names themselves for consistency.
*
* Added /proc/net/ipsec_spigrp and /proc/net/ipsec_tncfg.
*
* Revision 1.4 1998/04/30 15:42:24 rgb
* Silencing attach for normal operations with #ifdef IPSEC_DEBUG.
*
* Revision 1.3 1998/04/21 21:28:58 rgb
* Rearrange debug switches to change on the fly debug output from user
* space. Only kernel changes checked in at this time. radij.c was also
* changed to temporarily remove buggy debugging code in rj_delete causing
* an OOPS and hence, netlink device open errors.
*
* Revision 1.2 1998/04/12 22:03:22 rgb
* Updated ESP-3DES-HMAC-MD5-96,
* ESP-DES-HMAC-MD5-96,
* AH-HMAC-MD5-96,
* AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
* from old standards (RFC182[5-9] to new (as of March 1998) drafts.
*
* Fixed eroute references in /proc/net/ipsec*.
*
* Started to patch module unloading memory leaks in ipsec_netlink and
* radij tree unloading.
*
* Revision 1.1 1998/04/09 03:06:05 henry
* sources moved up from linux/net/ipsec
*
* Revision 1.1.1.1 1998/04/08 05:35:02 henry
* RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
*
* Revision 0.4 1997/01/15 01:28:15 ji
* No changes.
*
* Revision 0.3 1996/11/20 14:39:04 ji
* Fixed problem with node names of /proc/net entries.
* Other minor cleanups.
* Rationalized debugging code.
*
* Revision 0.2 1996/11/02 00:18:33 ji
* First limited release.
*
* Local variables:
* c-file-style: "linux"
* End:
*
*/