| 1 |
/*
|
| 2 |
* IPSEC Tunneling code. Heavily based on drivers/net/new_tunnel.c
|
| 3 |
* Copyright (C) 1996, 1997 John Ioannidis.
|
| 4 |
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Richard Guy Briggs.
|
| 5 |
*
|
| 6 |
* OCF/receive state machine written by
|
| 7 |
* David McCullough <dmccullough@cyberguard.com>
|
| 8 |
* Copyright (C) 2004-2005 Intel Corporation. All Rights Reserved.
|
| 9 |
*
|
| 10 |
* This program is free software; you can redistribute it and/or modify it
|
| 11 |
* under the terms of the GNU General Public License as published by the
|
| 12 |
* Free Software Foundation; either version 2 of the License, or (at your
|
| 13 |
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
|
| 14 |
*
|
| 15 |
* This program is distributed in the hope that it will be useful, but
|
| 16 |
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
| 17 |
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
| 18 |
* for more details.
|
| 19 |
*/
|
| 20 |
|
| 21 |
#define __NO_VERSION__
|
| 22 |
#include <linux/module.h>
|
| 23 |
#ifndef AUTOCONF_INCLUDED
|
| 24 |
#include <linux/config.h>
|
| 25 |
#endif /* for CONFIG_IP_FORWARD */
|
| 26 |
#include <linux/version.h>
|
| 27 |
#include <linux/kernel.h> /* printk() */
|
| 28 |
|
| 29 |
#include "openswan/ipsec_param.h"
|
| 30 |
|
| 31 |
#ifdef MALLOC_SLAB
|
| 32 |
# include <linux/slab.h> /* kmalloc() */
|
| 33 |
#else /* MALLOC_SLAB */
|
| 34 |
# include <linux/malloc.h> /* kmalloc() */
|
| 35 |
#endif /* MALLOC_SLAB */
|
| 36 |
#include <linux/errno.h> /* error codes */
|
| 37 |
#include <linux/types.h> /* size_t */
|
| 38 |
#include <linux/file.h>
|
| 39 |
#include <linux/interrupt.h> /* mark_bh */
|
| 40 |
|
| 41 |
#include <net/tcp.h>
|
| 42 |
#include <net/udp.h>
|
| 43 |
#include <linux/skbuff.h>
|
| 44 |
|
| 45 |
#include <linux/netdevice.h> /* struct device, struct net_device_stats, dev_queue_xmit() and other headers */
|
| 46 |
#include <linux/etherdevice.h> /* eth_type_trans */
|
| 47 |
#include <linux/ip.h> /* struct iphdr */
|
| 48 |
#include <net/arp.h>
|
| 49 |
#include <linux/skbuff.h>
|
| 50 |
|
| 51 |
#include <openswan.h>
|
| 52 |
|
| 53 |
# include <linux/in6.h>
|
| 54 |
# define IS_MYADDR RTN_LOCAL
|
| 55 |
# include <net/dst.h>
|
| 56 |
# define PHYSDEV_TYPE
|
| 57 |
|
| 58 |
#ifndef NETDEV_TX_BUSY
|
| 59 |
# ifdef NETDEV_XMIT_CN
|
| 60 |
# define NETDEV_TX_BUSY NETDEV_XMIT_CN
|
| 61 |
# else
|
| 62 |
# define NETDEV_TX_BUSY 1
|
| 63 |
# endif
|
| 64 |
#endif
|
| 65 |
|
| 66 |
#include <net/icmp.h> /* icmp_send() */
|
| 67 |
#include <net/ip.h>
|
| 68 |
#include <net/arp.h>
|
| 69 |
#ifdef NETDEV_23
|
| 70 |
# include <linux/netfilter_ipv4.h>
|
| 71 |
#endif /* NETDEV_23 */
|
| 72 |
|
| 73 |
#include <linux/if_arp.h>
|
| 74 |
#include <net/arp.h>
|
| 75 |
|
| 76 |
#include "openswan/ipsec_kversion.h"
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| 77 |
#include "openswan/radij.h"
|
| 78 |
#include "openswan/ipsec_life.h"
|
| 79 |
#include "openswan/ipsec_xform.h"
|
| 80 |
#include "openswan/ipsec_eroute.h"
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| 81 |
#include "openswan/ipsec_encap.h"
|
| 82 |
#include "openswan/ipsec_radij.h"
|
| 83 |
#include "openswan/ipsec_sa.h"
|
| 84 |
#include "openswan/ipsec_tunnel.h"
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| 85 |
#include "openswan/ipsec_xmit.h"
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| 86 |
#include "openswan/ipsec_rcv.h"
|
| 87 |
#include "openswan/ipsec_ipe4.h"
|
| 88 |
#include "openswan/ipsec_ah.h"
|
| 89 |
#include "openswan/ipsec_esp.h"
|
| 90 |
#include "openswan/ipsec_kern24.h"
|
| 91 |
|
| 92 |
#include <openswan/pfkeyv2.h>
|
| 93 |
#include <openswan/pfkey.h>
|
| 94 |
|
| 95 |
#include "openswan/ipsec_proto.h"
|
| 96 |
#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
|
| 97 |
#include <linux/udp.h>
|
| 98 |
#endif
|
| 99 |
|
| 100 |
static __u32 zeroes[64];
|
| 101 |
|
| 102 |
/* forward references */
|
| 103 |
DEBUG_NO_STATIC int ipsec_tunnel_attach(struct net_device *dev, struct net_device *physdev);
|
| 104 |
DEBUG_NO_STATIC int ipsec_tunnel_detach(struct net_device *dev);
|
| 105 |
extern const struct net_device_ops klips_device_ops;
|
| 106 |
|
| 107 |
#ifdef CONFIG_KLIPS_DEBUG
|
| 108 |
int debug_tunnel = 0;
|
| 109 |
#endif /* CONFIG_KLIPS_DEBUG */
|
| 110 |
|
| 111 |
DEBUG_NO_STATIC int
|
| 112 |
ipsec_tunnel_open(struct net_device *dev)
|
| 113 |
{
|
| 114 |
struct ipsecpriv *prv = netdev_priv(dev);
|
| 115 |
|
| 116 |
/*
|
| 117 |
* Can't open until attached.
|
| 118 |
*/
|
| 119 |
|
| 120 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 121 |
"klips_debug:ipsec_tunnel_open: "
|
| 122 |
"dev = %s, prv->dev = %s\n",
|
| 123 |
dev->name, prv->dev?prv->dev->name:"NONE");
|
| 124 |
|
| 125 |
if (prv->dev == NULL)
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| 126 |
return -ENODEV;
|
| 127 |
|
| 128 |
KLIPS_INC_USE;
|
| 129 |
return 0;
|
| 130 |
}
|
| 131 |
|
| 132 |
DEBUG_NO_STATIC int
|
| 133 |
ipsec_tunnel_close(struct net_device *dev)
|
| 134 |
{
|
| 135 |
KLIPS_DEC_USE;
|
| 136 |
return 0;
|
| 137 |
}
|
| 138 |
|
| 139 |
static inline int ipsec_tunnel_xmit2(struct sk_buff *skb)
|
| 140 |
{
|
| 141 |
|
| 142 |
#ifdef NETDEV_25 /* 2.6 kernels */
|
| 143 |
return dst_output(skb);
|
| 144 |
#else
|
| 145 |
return ip_send(skb);
|
| 146 |
#endif
|
| 147 |
}
|
| 148 |
|
| 149 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 150 |
|
| 151 |
int klips_header(struct sk_buff *skb, struct net_device *dev,
|
| 152 |
unsigned short type,
|
| 153 |
const void *daddr, const void *saddr, unsigned len)
|
| 154 |
{
|
| 155 |
struct ipsecpriv *prv = netdev_priv(dev);
|
| 156 |
struct net_device *tmp;
|
| 157 |
int ret;
|
| 158 |
struct net_device_stats *stats; /* This device's statistics */
|
| 159 |
|
| 160 |
if(skb == NULL) {
|
| 161 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
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| 162 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 163 |
"no skb...\n");
|
| 164 |
return -ENODATA;
|
| 165 |
}
|
| 166 |
|
| 167 |
if(dev == NULL) {
|
| 168 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
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"klips_debug:ipsec_tunnel_hard_header: "
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| 170 |
"no device...\n");
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| 171 |
return -ENODEV;
|
| 172 |
}
|
| 173 |
|
| 174 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
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"klips_debug:ipsec_tunnel_hard_header: "
|
| 176 |
"skb->dev=%s dev=%s.\n",
|
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skb->dev ? skb->dev->name : "NULL",
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dev->name);
|
| 179 |
|
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if(prv == NULL) {
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KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
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"klips_debug:ipsec_tunnel_hard_header: "
|
| 183 |
"no private space associated with dev=%s\n",
|
| 184 |
dev->name ? dev->name : "NULL");
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| 185 |
return -ENODEV;
|
| 186 |
}
|
| 187 |
|
| 188 |
stats = (struct net_device_stats *) &(prv->mystats);
|
| 189 |
|
| 190 |
if(prv->dev == NULL) {
|
| 191 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 192 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 193 |
"no physical device associated with dev=%s\n",
|
| 194 |
dev->name ? dev->name : "NULL");
|
| 195 |
stats->tx_dropped++;
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return -ENODEV;
|
| 197 |
}
|
| 198 |
|
| 199 |
if(prv->dev->header_ops == NULL ||
|
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prv->dev->header_ops->create == NULL) {
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| 201 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
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| 202 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 203 |
"cannot revector dev=%s op=%p func=%p",
|
| 204 |
dev->name ? dev->name : "NULL",
|
| 205 |
prv->dev->header_ops, prv->dev->header_ops ?
|
| 206 |
prv->dev->header_ops->create : 0);
|
| 207 |
stats->tx_dropped++;
|
| 208 |
return -ENODEV;
|
| 209 |
}
|
| 210 |
|
| 211 |
/* check if we have to send a IPv6 packet. It might be a Router
|
| 212 |
Solicitation, where the building of the packet happens in
|
| 213 |
reverse order:
|
| 214 |
1. ll hdr,
|
| 215 |
2. IPv6 hdr,
|
| 216 |
3. ICMPv6 hdr
|
| 217 |
-> skb->nh.raw is still uninitialized when this function is
|
| 218 |
called!! If this is no IPv6 packet, we can print debugging
|
| 219 |
messages, otherwise we skip all debugging messages and just
|
| 220 |
build the ll header */
|
| 221 |
if(type != ETH_P_IPV6) {
|
| 222 |
/* execute this only, if we don't have to build the
|
| 223 |
header for a IPv6 packet */
|
| 224 |
if(!prv->dev) {
|
| 225 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 226 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 227 |
"physical device has been detached, packet dropped 0p%p->0p%p len=%d type=%d dev=%s->NULL ",
|
| 228 |
saddr,
|
| 229 |
daddr,
|
| 230 |
len,
|
| 231 |
type,
|
| 232 |
dev->name);
|
| 233 |
KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
|
| 234 |
"ip=%08x->%08x\n",
|
| 235 |
(__u32)ntohl(ip_hdr(skb)->saddr),
|
| 236 |
(__u32)ntohl(ip_hdr(skb)->daddr) );
|
| 237 |
stats->tx_dropped++;
|
| 238 |
return -ENODEV;
|
| 239 |
}
|
| 240 |
|
| 241 |
#define da ((struct net_device *)(prv->dev))->dev_addr
|
| 242 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 243 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 244 |
"Revectored 0p%p->0p%p len=%d type=%d dev=%s->%s dev_addr=%02x:%02x:%02x:%02x:%02x:%02x ",
|
| 245 |
saddr,
|
| 246 |
daddr,
|
| 247 |
len,
|
| 248 |
type,
|
| 249 |
dev->name,
|
| 250 |
prv->dev->name,
|
| 251 |
da[0], da[1], da[2], da[3], da[4], da[5]);
|
| 252 |
KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
|
| 253 |
"ip=%08x->%08x\n",
|
| 254 |
(__u32)ntohl(ip_hdr(skb)->saddr),
|
| 255 |
(__u32)ntohl(ip_hdr(skb)->daddr) );
|
| 256 |
} else {
|
| 257 |
KLIPS_PRINT(debug_tunnel,
|
| 258 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 259 |
"is IPv6 packet, skip debugging messages, only revector and build linklocal header.\n");
|
| 260 |
}
|
| 261 |
tmp = skb->dev;
|
| 262 |
skb->dev = prv->dev;
|
| 263 |
ret = prv->dev->header_ops->create(skb, prv->dev, type,
|
| 264 |
(void *)daddr, (void *)saddr, len);
|
| 265 |
skb->dev = tmp;
|
| 266 |
return ret;
|
| 267 |
}
|
| 268 |
|
| 269 |
int klips_header_parse(const struct sk_buff *skb, unsigned char *haddr)
|
| 270 |
{
|
| 271 |
struct ipsecpriv *prv = netdev_priv(skb->dev);
|
| 272 |
struct net_device_stats *stats; /* This device's statistics */
|
| 273 |
int ret;
|
| 274 |
|
| 275 |
stats = (struct net_device_stats *) &(prv->mystats);
|
| 276 |
if(prv->dev == NULL) {
|
| 277 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 278 |
"klips_debug:klips_header_parse: "
|
| 279 |
"no physical device associated with dev=%s",
|
| 280 |
skb->dev->name ? skb->dev->name : "NULL");
|
| 281 |
stats->tx_dropped++;
|
| 282 |
return -ENODEV;
|
| 283 |
}
|
| 284 |
|
| 285 |
if(prv->dev->header_ops == NULL ||
|
| 286 |
prv->dev->header_ops->parse == NULL) {
|
| 287 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 288 |
"klips_debug:klips_header_parse: "
|
| 289 |
"cannot revector dev=%s op=%p func=%p",
|
| 290 |
skb->dev->name ? skb->dev->name : "NULL",
|
| 291 |
prv->dev->header_ops, prv->dev->header_ops ?
|
| 292 |
prv->dev->header_ops->parse : 0);
|
| 293 |
stats->tx_dropped++;
|
| 294 |
return -ENODEV;
|
| 295 |
}
|
| 296 |
|
| 297 |
|
| 298 |
{
|
| 299 |
#if 0
|
| 300 |
struct net_device *tmp;
|
| 301 |
tmp = skb->dev;
|
| 302 |
skb->dev = prv->dev;
|
| 303 |
#endif
|
| 304 |
ret = prv->dev->header_ops->parse(skb, haddr);
|
| 305 |
#if 0
|
| 306 |
skb->dev = tmp;
|
| 307 |
#endif
|
| 308 |
}
|
| 309 |
return ret;
|
| 310 |
}
|
| 311 |
|
| 312 |
DEBUG_NO_STATIC int
|
| 313 |
klips_rebuild_header(struct sk_buff *skb)
|
| 314 |
{
|
| 315 |
struct ipsecpriv *prv = netdev_priv(skb->dev);
|
| 316 |
struct net_device *tmp;
|
| 317 |
int ret;
|
| 318 |
struct net_device_stats *stats; /* This device's statistics */
|
| 319 |
|
| 320 |
if(skb->dev == NULL) {
|
| 321 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 322 |
"klips_debug:ipsec_tunnel_rebuild_header: "
|
| 323 |
"no device...");
|
| 324 |
return -ENODEV;
|
| 325 |
}
|
| 326 |
|
| 327 |
if(prv == NULL) {
|
| 328 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 329 |
"klips_debug:ipsec_tunnel_rebuild_header: "
|
| 330 |
"no private space associated with dev=%s",
|
| 331 |
skb->dev->name ? skb->dev->name : "NULL");
|
| 332 |
return -ENODEV;
|
| 333 |
}
|
| 334 |
|
| 335 |
stats = (struct net_device_stats *) &(prv->mystats);
|
| 336 |
|
| 337 |
if(prv->dev == NULL) {
|
| 338 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 339 |
"klips_debug:ipsec_tunnel_rebuild_header: "
|
| 340 |
"no physical device associated with dev=%s",
|
| 341 |
skb->dev->name ? skb->dev->name : "NULL");
|
| 342 |
stats->tx_dropped++;
|
| 343 |
return -ENODEV;
|
| 344 |
}
|
| 345 |
|
| 346 |
if(prv->dev->header_ops == NULL ||
|
| 347 |
prv->dev->header_ops->rebuild == NULL) {
|
| 348 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 349 |
"klips_debug:ipsec_tunnel_rebuild_header: "
|
| 350 |
"cannot revector dev=%s op=%p func=%p",
|
| 351 |
skb->dev->name ? skb->dev->name : "NULL",
|
| 352 |
prv->dev->header_ops, prv->dev->header_ops ?
|
| 353 |
prv->dev->header_ops->rebuild : 0);
|
| 354 |
stats->tx_dropped++;
|
| 355 |
return -ENODEV;
|
| 356 |
}
|
| 357 |
|
| 358 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 359 |
"klips_debug:ipsec_tunnel: "
|
| 360 |
"Revectored rebuild_header dev=%s->%s ",
|
| 361 |
skb->dev->name, prv->dev->name);
|
| 362 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 363 |
"ip=%08x->%08x\n",
|
| 364 |
(__u32)ntohl(ip_hdr(skb)->saddr),
|
| 365 |
(__u32)ntohl(ip_hdr(skb)->daddr) );
|
| 366 |
tmp = skb->dev;
|
| 367 |
skb->dev = prv->dev;
|
| 368 |
|
| 369 |
ret = prv->dev->header_ops->rebuild(skb);
|
| 370 |
skb->dev = tmp;
|
| 371 |
return ret;
|
| 372 |
}
|
| 373 |
|
| 374 |
int klips_header_cache(const struct neighbour *neigh, struct hh_cache *hh)
|
| 375 |
{
|
| 376 |
const struct net_device *dev = neigh->dev;
|
| 377 |
struct ipsecpriv *prv = netdev_priv(dev);
|
| 378 |
struct net_device_stats *stats;
|
| 379 |
|
| 380 |
stats = (struct net_device_stats *) &(prv->mystats);
|
| 381 |
if(prv->dev == NULL) {
|
| 382 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 383 |
"klips_debug:klips_header_cache: "
|
| 384 |
"no physical device associated with dev=%s",
|
| 385 |
dev->name ? dev->name : "NULL");
|
| 386 |
stats->tx_dropped++;
|
| 387 |
return -1;
|
| 388 |
}
|
| 389 |
|
| 390 |
if(prv->dev->header_ops == NULL ||
|
| 391 |
prv->dev->header_ops->cache == NULL) {
|
| 392 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 393 |
"klips_debug:klips_header_cache: "
|
| 394 |
"cannot revector dev=%s op=%p func=%p",
|
| 395 |
dev->name ? dev->name : "NULL",
|
| 396 |
prv->dev->header_ops, prv->dev->header_ops ?
|
| 397 |
prv->dev->header_ops->cache : 0);
|
| 398 |
stats->tx_dropped++;
|
| 399 |
return -1;
|
| 400 |
}
|
| 401 |
|
| 402 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 403 |
"klips_debug:ipsec_tunnel: "
|
| 404 |
"Revectored cache_update\n");
|
| 405 |
return prv->dev->header_ops->cache(neigh, hh);
|
| 406 |
}
|
| 407 |
|
| 408 |
DEBUG_NO_STATIC void
|
| 409 |
klips_header_cache_update(struct hh_cache *hh,
|
| 410 |
const struct net_device *dev,
|
| 411 |
const unsigned char * haddr)
|
| 412 |
{
|
| 413 |
struct ipsecpriv *prv = netdev_priv(dev);
|
| 414 |
|
| 415 |
struct net_device_stats *stats; /* This device's statistics */
|
| 416 |
|
| 417 |
if(dev == NULL) {
|
| 418 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 419 |
"klips_debug:ipsec_tunnel_cache_update: "
|
| 420 |
"no device...");
|
| 421 |
return;
|
| 422 |
}
|
| 423 |
|
| 424 |
if(prv == NULL) {
|
| 425 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 426 |
"klips_debug:ipsec_tunnel_cache_update: "
|
| 427 |
"no private space associated with dev=%s",
|
| 428 |
dev->name ? dev->name : "NULL");
|
| 429 |
return;
|
| 430 |
}
|
| 431 |
|
| 432 |
stats = (struct net_device_stats *) &(prv->mystats);
|
| 433 |
|
| 434 |
if(prv->dev == NULL) {
|
| 435 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 436 |
"klips_debug:ipsec_tunnel_cache_update: "
|
| 437 |
"no physical device associated with dev=%s",
|
| 438 |
dev->name ? dev->name : "NULL");
|
| 439 |
stats->tx_dropped++;
|
| 440 |
return;
|
| 441 |
}
|
| 442 |
|
| 443 |
if(prv->dev->header_ops == NULL ||
|
| 444 |
prv->dev->header_ops->cache_update == NULL) {
|
| 445 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 446 |
"klips_debug:ipsec_tunnel_cache_update: "
|
| 447 |
"cannot revector dev=%s op=%p func=%p",
|
| 448 |
dev->name ? dev->name : "NULL",
|
| 449 |
prv->dev->header_ops, prv->dev->header_ops ?
|
| 450 |
prv->dev->header_ops->cache_update : 0);
|
| 451 |
stats->tx_dropped++;
|
| 452 |
return;
|
| 453 |
}
|
| 454 |
|
| 455 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 456 |
"klips_debug:ipsec_tunnel: "
|
| 457 |
"Revectored cache_update\n");
|
| 458 |
prv->dev->header_ops->cache_update(hh, prv->dev, haddr);
|
| 459 |
return;
|
| 460 |
}
|
| 461 |
|
| 462 |
|
| 463 |
const struct header_ops klips_header_ops ____cacheline_aligned = {
|
| 464 |
.create = klips_header,
|
| 465 |
.parse = klips_header_parse,
|
| 466 |
.rebuild = klips_rebuild_header,
|
| 467 |
.cache = klips_header_cache,
|
| 468 |
.cache_update = klips_header_cache_update,
|
| 469 |
};
|
| 470 |
|
| 471 |
#endif /* HAVE_NETDEV_HEADER_OPS */
|
| 472 |
|
| 473 |
enum ipsec_xmit_value
|
| 474 |
ipsec_tunnel_strip_hard_header(struct ipsec_xmit_state *ixs)
|
| 475 |
{
|
| 476 |
/* ixs->physdev->hard_header_len is unreliable and should not be used */
|
| 477 |
ixs->hard_header_len = (unsigned char *)(ixs->iph) - ixs->skb->data;
|
| 478 |
|
| 479 |
if(ixs->hard_header_len < 0) {
|
| 480 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 481 |
"klips_error:ipsec_xmit_strip_hard_header: "
|
| 482 |
"Negative hard_header_len (%d)?!\n", ixs->hard_header_len);
|
| 483 |
ixs->stats->tx_dropped++;
|
| 484 |
return IPSEC_XMIT_BADHHLEN;
|
| 485 |
}
|
| 486 |
|
| 487 |
/* while ixs->physdev->hard_header_len is unreliable and
|
| 488 |
* should not be trusted, it accurate and required for ATM, GRE and
|
| 489 |
* some other interfaces to work. Thanks to Willy Tarreau
|
| 490 |
* <willy@w.ods.org>.
|
| 491 |
*/
|
| 492 |
if(ixs->hard_header_len == 0) { /* no hard header present */
|
| 493 |
ixs->hard_header_stripped = 1;
|
| 494 |
ixs->hard_header_len = ixs->physdev->hard_header_len;
|
| 495 |
}
|
| 496 |
|
| 497 |
if (debug_tunnel & DB_TN_XMIT) {
|
| 498 |
int i;
|
| 499 |
char c;
|
| 500 |
|
| 501 |
printk(KERN_INFO "klips_debug:ipsec_xmit_strip_hard_header: "
|
| 502 |
">>> skb->len=%ld hard_header_len:%d",
|
| 503 |
(unsigned long int)ixs->skb->len, ixs->hard_header_len);
|
| 504 |
c = ' ';
|
| 505 |
for (i=0; i < ixs->hard_header_len; i++) {
|
| 506 |
printk("%c%02x", c, ixs->skb->data[i]);
|
| 507 |
c = ':';
|
| 508 |
}
|
| 509 |
printk(" \n");
|
| 510 |
}
|
| 511 |
|
| 512 |
KLIPS_IP_PRINT(debug_tunnel & DB_TN_XMIT, ixs->iph);
|
| 513 |
|
| 514 |
KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
|
| 515 |
"klips_debug:ipsec_xmit_strip_hard_header: "
|
| 516 |
"Original head,tailroom: %d,%d\n",
|
| 517 |
skb_headroom(ixs->skb), skb_tailroom(ixs->skb));
|
| 518 |
|
| 519 |
return IPSEC_XMIT_OK;
|
| 520 |
}
|
| 521 |
|
| 522 |
enum ipsec_xmit_value
|
| 523 |
ipsec_tunnel_SAlookup(struct ipsec_xmit_state *ixs)
|
| 524 |
{
|
| 525 |
unsigned int bypass;
|
| 526 |
|
| 527 |
bypass = FALSE;
|
| 528 |
|
| 529 |
/*
|
| 530 |
* First things first -- look us up in the erouting tables.
|
| 531 |
*/
|
| 532 |
ixs->matcher.sen_len = sizeof (struct sockaddr_encap);
|
| 533 |
ixs->matcher.sen_family = AF_ENCAP;
|
| 534 |
ixs->matcher.sen_type = SENT_IP4;
|
| 535 |
ixs->matcher.sen_ip_src.s_addr = ixs->iph->saddr;
|
| 536 |
ixs->matcher.sen_ip_dst.s_addr = ixs->iph->daddr;
|
| 537 |
ixs->matcher.sen_proto = ixs->iph->protocol;
|
| 538 |
ipsec_extract_ports(ixs->iph, &ixs->matcher);
|
| 539 |
|
| 540 |
/*
|
| 541 |
* The spinlock is to prevent any other process from accessing or deleting
|
| 542 |
* the eroute while we are using and updating it.
|
| 543 |
*/
|
| 544 |
spin_lock_bh(&eroute_lock);
|
| 545 |
|
| 546 |
ixs->eroute = ipsec_findroute(&ixs->matcher);
|
| 547 |
|
| 548 |
if(ixs->iph->protocol == IPPROTO_UDP) {
|
| 549 |
struct udphdr *t = NULL;
|
| 550 |
|
| 551 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 552 |
"klips_debug:udp port check: "
|
| 553 |
"fragoff: %d len: %d>%ld \n",
|
| 554 |
ntohs(ixs->iph->frag_off) & IP_OFFSET,
|
| 555 |
(ixs->skb->len - ixs->hard_header_len),
|
| 556 |
(unsigned long int) ((ixs->iph->ihl << 2) + sizeof(struct udphdr)));
|
| 557 |
|
| 558 |
if((ntohs(ixs->iph->frag_off) & IP_OFFSET) == 0 &&
|
| 559 |
((ixs->skb->len - ixs->hard_header_len) >=
|
| 560 |
((ixs->iph->ihl << 2) + sizeof(struct udphdr))))
|
| 561 |
{
|
| 562 |
t =((struct udphdr*)((caddr_t)ixs->iph+(ixs->iph->ihl<<2)));
|
| 563 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 564 |
"klips_debug:udp port in packet: "
|
| 565 |
"port %d -> %d\n",
|
| 566 |
ntohs(t->source), ntohs(t->dest));
|
| 567 |
}
|
| 568 |
|
| 569 |
ixs->sport=0; ixs->dport=0;
|
| 570 |
|
| 571 |
if(ixs->skb->sk) {
|
| 572 |
#ifdef NET_26
|
| 573 |
#ifdef HAVE_INET_SK_SPORT
|
| 574 |
ixs->sport = ntohs(inet_sk(ixs->skb->sk)->sport);
|
| 575 |
ixs->dport = ntohs(inet_sk(ixs->skb->sk)->dport);
|
| 576 |
#else
|
| 577 |
struct udp_sock *us;
|
| 578 |
|
| 579 |
us = (struct udp_sock *)ixs->skb->sk;
|
| 580 |
|
| 581 |
ixs->sport = ntohs(us->inet.sport);
|
| 582 |
ixs->dport = ntohs(us->inet.dport);
|
| 583 |
#endif
|
| 584 |
#else
|
| 585 |
ixs->sport = ntohs(ixs->skb->sk->sport);
|
| 586 |
ixs->dport = ntohs(ixs->skb->sk->dport);
|
| 587 |
#endif
|
| 588 |
|
| 589 |
}
|
| 590 |
|
| 591 |
if(t != NULL) {
|
| 592 |
if(ixs->sport == 0) {
|
| 593 |
ixs->sport = ntohs(t->source);
|
| 594 |
}
|
| 595 |
if(ixs->dport == 0) {
|
| 596 |
ixs->dport = ntohs(t->dest);
|
| 597 |
}
|
| 598 |
}
|
| 599 |
}
|
| 600 |
|
| 601 |
/*
|
| 602 |
* practically identical to above, but let's be careful about
|
| 603 |
* tcp vs udp headers
|
| 604 |
*/
|
| 605 |
if(ixs->iph->protocol == IPPROTO_TCP) {
|
| 606 |
struct tcphdr *t = NULL;
|
| 607 |
|
| 608 |
if((ntohs(ixs->iph->frag_off) & IP_OFFSET) == 0 &&
|
| 609 |
((ixs->skb->len - ixs->hard_header_len) >=
|
| 610 |
((ixs->iph->ihl << 2) + sizeof(struct tcphdr)))) {
|
| 611 |
t =((struct tcphdr*)((caddr_t)ixs->iph+(ixs->iph->ihl<<2)));
|
| 612 |
}
|
| 613 |
|
| 614 |
ixs->sport=0; ixs->dport=0;
|
| 615 |
|
| 616 |
if(ixs->skb->sk) {
|
| 617 |
#ifdef NET_26
|
| 618 |
#ifdef HAVE_INET_SK_SPORT
|
| 619 |
ixs->sport = ntohs(inet_sk(ixs->skb->sk)->sport);
|
| 620 |
ixs->dport = ntohs(inet_sk(ixs->skb->sk)->dport);
|
| 621 |
#else
|
| 622 |
struct tcp_tw_bucket *tw;
|
| 623 |
tw = (struct tcp_tw_bucket *)ixs->skb->sk;
|
| 624 |
ixs->sport = ntohs(tw->tw_sport);
|
| 625 |
ixs->dport = ntohs(tw->tw_dport);
|
| 626 |
#endif
|
| 627 |
#else
|
| 628 |
ixs->sport = ntohs(ixs->skb->sk->sport);
|
| 629 |
ixs->dport = ntohs(ixs->skb->sk->dport);
|
| 630 |
#endif
|
| 631 |
}
|
| 632 |
|
| 633 |
if(t != NULL) {
|
| 634 |
if(ixs->sport == 0) {
|
| 635 |
ixs->sport = ntohs(t->source);
|
| 636 |
}
|
| 637 |
if(ixs->dport == 0) {
|
| 638 |
ixs->dport = ntohs(t->dest);
|
| 639 |
}
|
| 640 |
}
|
| 641 |
}
|
| 642 |
|
| 643 |
/* default to a %drop eroute */
|
| 644 |
ixs->outgoing_said.proto = IPPROTO_INT;
|
| 645 |
ixs->outgoing_said.spi = htonl(SPI_DROP);
|
| 646 |
ixs->outgoing_said.dst.u.v4.sin_addr.s_addr = INADDR_ANY;
|
| 647 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 648 |
"klips_debug:ipsec_xmit_SAlookup: "
|
| 649 |
"checking for local udp/500 IKE packet "
|
| 650 |
"saddr=%x, er=0p%p, daddr=%x, er_dst=%x, proto=%d sport=%d dport=%d\n",
|
| 651 |
ntohl((unsigned int)ixs->iph->saddr),
|
| 652 |
ixs->eroute,
|
| 653 |
ntohl((unsigned int)ixs->iph->daddr),
|
| 654 |
ixs->eroute ? ntohl((unsigned int)ixs->eroute->er_said.dst.u.v4.sin_addr.s_addr) : 0,
|
| 655 |
ixs->iph->protocol,
|
| 656 |
ixs->sport,
|
| 657 |
ixs->dport);
|
| 658 |
|
| 659 |
/*
|
| 660 |
* cheat for now...are we udp/500? If so, let it through
|
| 661 |
* without interference since it is most likely an IKE packet.
|
| 662 |
*/
|
| 663 |
|
| 664 |
if (ip_chk_addr((unsigned long)ixs->iph->saddr) == IS_MYADDR
|
| 665 |
&& (ixs->eroute==NULL
|
| 666 |
|| ixs->iph->daddr == ixs->eroute->er_said.dst.u.v4.sin_addr.s_addr
|
| 667 |
|| INADDR_ANY == ixs->eroute->er_said.dst.u.v4.sin_addr.s_addr)
|
| 668 |
&& (ixs->iph->protocol == IPPROTO_UDP &&
|
| 669 |
(ixs->sport == 500 || ixs->sport == 4500))) {
|
| 670 |
/* Whatever the eroute, this is an IKE message
|
| 671 |
* from us (i.e. not being forwarded).
|
| 672 |
* Furthermore, if there is a tunnel eroute,
|
| 673 |
* the destination is the peer for this eroute.
|
| 674 |
* So %pass the packet: modify the default %drop.
|
| 675 |
*/
|
| 676 |
|
| 677 |
ixs->outgoing_said.spi = htonl(SPI_PASS);
|
| 678 |
if(!(ixs->skb->sk) && ((ntohs(ixs->iph->frag_off) & IP_MF) != 0)) {
|
| 679 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 680 |
"klips_debug:ipsec_xmit_SAlookup: "
|
| 681 |
"local UDP/500 (probably IKE) passthrough: base fragment, rest of fragments will probably get filtered.\n");
|
| 682 |
}
|
| 683 |
bypass = TRUE;
|
| 684 |
}
|
| 685 |
|
| 686 |
#ifdef KLIPS_EXCEPT_DNS53
|
| 687 |
/*
|
| 688 |
*
|
| 689 |
* if we are udp/53 or tcp/53, also let it through a %trap or %hold,
|
| 690 |
* since it is DNS, but *also* follow the %trap.
|
| 691 |
*
|
| 692 |
* we do not do this for tunnels, only %trap's and %hold's.
|
| 693 |
*
|
| 694 |
*/
|
| 695 |
|
| 696 |
if (ip_chk_addr((unsigned long)ixs->iph->saddr) == IS_MYADDR
|
| 697 |
&& (ixs->eroute==NULL
|
| 698 |
|| ixs->iph->daddr == ixs->eroute->er_said.dst.u.v4.sin_addr.s_addr
|
| 699 |
|| INADDR_ANY == ixs->eroute->er_said.dst.u.v4.sin_addr.s_addr)
|
| 700 |
&& ((ixs->iph->protocol == IPPROTO_UDP
|
| 701 |
|| ixs->iph->protocol == IPPROTO_TCP)
|
| 702 |
&& ixs->dport == 53)) {
|
| 703 |
|
| 704 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 705 |
"klips_debug:ipsec_xmit_SAlookup: "
|
| 706 |
"possible DNS packet\n");
|
| 707 |
|
| 708 |
if(ixs->eroute)
|
| 709 |
{
|
| 710 |
if(ixs->eroute->er_said.spi == htonl(SPI_TRAP)
|
| 711 |
|| ixs->eroute->er_said.spi == htonl(SPI_HOLD))
|
| 712 |
{
|
| 713 |
ixs->outgoing_said.spi = htonl(SPI_PASSTRAP);
|
| 714 |
bypass = TRUE;
|
| 715 |
}
|
| 716 |
}
|
| 717 |
else
|
| 718 |
{
|
| 719 |
ixs->outgoing_said.spi = htonl(SPI_PASSTRAP);
|
| 720 |
bypass = TRUE;
|
| 721 |
}
|
| 722 |
|
| 723 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 724 |
"klips_debug:ipsec_xmit_SAlookup: "
|
| 725 |
"bypass = %d\n", bypass);
|
| 726 |
|
| 727 |
if(bypass
|
| 728 |
&& !(ixs->skb->sk)
|
| 729 |
&& ((ntohs(ixs->iph->frag_off) & IP_MF) != 0))
|
| 730 |
{
|
| 731 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 732 |
"klips_debug:ipsec_xmit_SAlookup: "
|
| 733 |
"local port 53 (probably DNS) passthrough:"
|
| 734 |
"base fragment, rest of fragments will "
|
| 735 |
"probably get filtered.\n");
|
| 736 |
}
|
| 737 |
}
|
| 738 |
#endif
|
| 739 |
|
| 740 |
if (bypass==FALSE && ixs->eroute) {
|
| 741 |
ixs->eroute->er_count++;
|
| 742 |
ixs->eroute->er_lasttime = jiffies/HZ;
|
| 743 |
if(ixs->eroute->er_said.proto==IPPROTO_INT
|
| 744 |
&& ixs->eroute->er_said.spi==htonl(SPI_HOLD))
|
| 745 |
{
|
| 746 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 747 |
"klips_debug:ipsec_xmit_SAlookup: "
|
| 748 |
"shunt SA of HOLD: skb stored in HOLD.\n");
|
| 749 |
if(ixs->eroute->er_last != NULL) {
|
| 750 |
ipsec_kfree_skb(ixs->eroute->er_last);
|
| 751 |
ixs->stats->tx_dropped++;
|
| 752 |
}
|
| 753 |
ixs->eroute->er_last = ixs->skb;
|
| 754 |
ixs->skb = NULL;
|
| 755 |
spin_unlock_bh(&eroute_lock);
|
| 756 |
return IPSEC_XMIT_STOLEN;
|
| 757 |
}
|
| 758 |
ixs->outgoing_said = ixs->eroute->er_said;
|
| 759 |
ixs->eroute_pid = ixs->eroute->er_pid;
|
| 760 |
|
| 761 |
/* Copy of the ident for the TRAP/TRAPSUBNET eroutes */
|
| 762 |
if(ixs->outgoing_said.proto==IPPROTO_INT
|
| 763 |
&& (ixs->outgoing_said.spi==htonl(SPI_TRAP)
|
| 764 |
|| (ixs->outgoing_said.spi==htonl(SPI_TRAPSUBNET)))) {
|
| 765 |
int len;
|
| 766 |
|
| 767 |
ixs->ips.ips_ident_s.type = ixs->eroute->er_ident_s.type;
|
| 768 |
ixs->ips.ips_ident_s.id = ixs->eroute->er_ident_s.id;
|
| 769 |
ixs->ips.ips_ident_s.len = ixs->eroute->er_ident_s.len;
|
| 770 |
if (ixs->ips.ips_ident_s.len)
|
| 771 |
{
|
| 772 |
len = ixs->ips.ips_ident_s.len * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident);
|
| 773 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 774 |
"klips_debug:ipsec_xmit_SAlookup: "
|
| 775 |
"allocating %d bytes for ident_s shunt SA of HOLD: skb stored in HOLD.\n",
|
| 776 |
len);
|
| 777 |
if ((ixs->ips.ips_ident_s.data = kmalloc(len, GFP_ATOMIC)) == NULL) {
|
| 778 |
printk(KERN_WARNING "klips_debug:ipsec_xmit_SAlookup: "
|
| 779 |
"Failed, tried to allocate %d bytes for source ident.\n",
|
| 780 |
len);
|
| 781 |
ixs->stats->tx_dropped++;
|
| 782 |
spin_unlock_bh(&eroute_lock);
|
| 783 |
return IPSEC_XMIT_ERRMEMALLOC;
|
| 784 |
}
|
| 785 |
memcpy(ixs->ips.ips_ident_s.data, ixs->eroute->er_ident_s.data, len);
|
| 786 |
}
|
| 787 |
ixs->ips.ips_ident_d.type = ixs->eroute->er_ident_d.type;
|
| 788 |
ixs->ips.ips_ident_d.id = ixs->eroute->er_ident_d.id;
|
| 789 |
ixs->ips.ips_ident_d.len = ixs->eroute->er_ident_d.len;
|
| 790 |
if (ixs->ips.ips_ident_d.len)
|
| 791 |
{
|
| 792 |
len = ixs->ips.ips_ident_d.len * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident);
|
| 793 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 794 |
"klips_debug:ipsec_xmit_SAlookup: "
|
| 795 |
"allocating %d bytes for ident_d shunt SA of HOLD: skb stored in HOLD.\n",
|
| 796 |
len);
|
| 797 |
if ((ixs->ips.ips_ident_d.data = kmalloc(len, GFP_ATOMIC)) == NULL) {
|
| 798 |
printk(KERN_WARNING "klips_debug:ipsec_xmit_SAlookup: "
|
| 799 |
"Failed, tried to allocate %d bytes for dest ident.\n",
|
| 800 |
len);
|
| 801 |
ixs->stats->tx_dropped++;
|
| 802 |
spin_unlock_bh(&eroute_lock);
|
| 803 |
return IPSEC_XMIT_ERRMEMALLOC;
|
| 804 |
}
|
| 805 |
memcpy(ixs->ips.ips_ident_d.data, ixs->eroute->er_ident_d.data, len);
|
| 806 |
}
|
| 807 |
}
|
| 808 |
}
|
| 809 |
|
| 810 |
spin_unlock_bh(&eroute_lock);
|
| 811 |
return IPSEC_XMIT_OK;
|
| 812 |
}
|
| 813 |
|
| 814 |
|
| 815 |
enum ipsec_xmit_value
|
| 816 |
ipsec_tunnel_restore_hard_header(struct ipsec_xmit_state*ixs)
|
| 817 |
{
|
| 818 |
KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
|
| 819 |
"klips_debug:ipsec_xmit_restore_hard_header: "
|
| 820 |
"After recursive xforms -- head,tailroom: %d,%d\n",
|
| 821 |
skb_headroom(ixs->skb),
|
| 822 |
skb_tailroom(ixs->skb));
|
| 823 |
|
| 824 |
if(ixs->saved_header) {
|
| 825 |
if(skb_headroom(ixs->skb) < ixs->hard_header_len) {
|
| 826 |
printk(KERN_WARNING
|
| 827 |
"klips_error:ipsec_xmit_restore_hard_header: "
|
| 828 |
"tried to skb_push hhlen=%d, %d available. This should never happen, please report.\n",
|
| 829 |
ixs->hard_header_len,
|
| 830 |
skb_headroom(ixs->skb));
|
| 831 |
ixs->stats->tx_errors++;
|
| 832 |
return IPSEC_XMIT_PUSHPULLERR;
|
| 833 |
|
| 834 |
}
|
| 835 |
skb_push(ixs->skb, ixs->hard_header_len);
|
| 836 |
{
|
| 837 |
int i;
|
| 838 |
for (i = 0; i < ixs->hard_header_len; i++) {
|
| 839 |
ixs->skb->data[i] = ixs->saved_header[i];
|
| 840 |
}
|
| 841 |
}
|
| 842 |
}
|
| 843 |
|
| 844 |
KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
|
| 845 |
"klips_debug:ipsec_xmit_restore_hard_header: "
|
| 846 |
"With hard_header, final head,tailroom: %d,%d\n",
|
| 847 |
skb_headroom(ixs->skb),
|
| 848 |
skb_tailroom(ixs->skb));
|
| 849 |
|
| 850 |
return IPSEC_XMIT_OK;
|
| 851 |
}
|
| 852 |
|
| 853 |
|
| 854 |
/*
|
| 855 |
* when encap processing is complete it call this for us to continue
|
| 856 |
*/
|
| 857 |
|
| 858 |
void
|
| 859 |
ipsec_tunnel_xsm_complete(
|
| 860 |
struct ipsec_xmit_state *ixs,
|
| 861 |
enum ipsec_xmit_value stat)
|
| 862 |
{
|
| 863 |
if(stat != IPSEC_XMIT_OK) {
|
| 864 |
if(stat == IPSEC_XMIT_PASS) {
|
| 865 |
goto bypass;
|
| 866 |
}
|
| 867 |
|
| 868 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 869 |
"klips_debug:ipsec_tunnel_start_xmit: encap_bundle failed: %d\n",
|
| 870 |
stat);
|
| 871 |
goto cleanup;
|
| 872 |
}
|
| 873 |
|
| 874 |
ixs->matcher.sen_ip_src.s_addr = ixs->iph->saddr;
|
| 875 |
ixs->matcher.sen_ip_dst.s_addr = ixs->iph->daddr;
|
| 876 |
ixs->matcher.sen_proto = ixs->iph->protocol;
|
| 877 |
ipsec_extract_ports(ixs->iph, &ixs->matcher);
|
| 878 |
|
| 879 |
spin_lock_bh(&eroute_lock);
|
| 880 |
ixs->eroute = ipsec_findroute(&ixs->matcher);
|
| 881 |
if(ixs->eroute) {
|
| 882 |
ixs->outgoing_said = ixs->eroute->er_said;
|
| 883 |
ixs->eroute_pid = ixs->eroute->er_pid;
|
| 884 |
ixs->eroute->er_count++;
|
| 885 |
ixs->eroute->er_lasttime = jiffies/HZ;
|
| 886 |
}
|
| 887 |
spin_unlock_bh(&eroute_lock);
|
| 888 |
|
| 889 |
KLIPS_PRINT((debug_tunnel & DB_TN_XMIT) &&
|
| 890 |
/* ((ixs->orgdst != ixs->newdst) || (ixs->orgsrc != ixs->newsrc)) */
|
| 891 |
(ixs->orgedst != ixs->outgoing_said.dst.u.v4.sin_addr.s_addr) &&
|
| 892 |
ixs->outgoing_said.dst.u.v4.sin_addr.s_addr &&
|
| 893 |
ixs->eroute,
|
| 894 |
"klips_debug:ipsec_tunnel_start_xmit: "
|
| 895 |
"We are recursing here.\n");
|
| 896 |
|
| 897 |
if (/*((ixs->orgdst != ixs->newdst) || (ixs->orgsrc != ixs->newsrc))*/
|
| 898 |
(ixs->orgedst != ixs->outgoing_said.dst.u.v4.sin_addr.s_addr) &&
|
| 899 |
ixs->outgoing_said.dst.u.v4.sin_addr.s_addr &&
|
| 900 |
ixs->eroute) {
|
| 901 |
ipsec_xsm(ixs);
|
| 902 |
return;
|
| 903 |
}
|
| 904 |
|
| 905 |
#ifdef NAT_TRAVERSAL
|
| 906 |
stat = ipsec_nat_encap(ixs);
|
| 907 |
if(stat != IPSEC_XMIT_OK) {
|
| 908 |
goto cleanup;
|
| 909 |
}
|
| 910 |
#endif
|
| 911 |
|
| 912 |
stat = ipsec_tunnel_restore_hard_header(ixs);
|
| 913 |
if(stat != IPSEC_XMIT_OK) {
|
| 914 |
goto cleanup;
|
| 915 |
}
|
| 916 |
|
| 917 |
bypass:
|
| 918 |
stat = ipsec_tunnel_send(ixs);
|
| 919 |
|
| 920 |
cleanup:
|
| 921 |
ipsec_xmit_cleanup(ixs);
|
| 922 |
ipsec_xmit_state_delete(ixs);
|
| 923 |
}
|
| 924 |
|
| 925 |
|
| 926 |
/*
|
| 927 |
* This function assumes it is being called from dev_queue_xmit()
|
| 928 |
* and that skb is filled properly by that function.
|
| 929 |
*/
|
| 930 |
int
|
| 931 |
ipsec_tunnel_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
| 932 |
{
|
| 933 |
struct ipsec_xmit_state *ixs = NULL;
|
| 934 |
enum ipsec_xmit_value stat;
|
| 935 |
|
| 936 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 937 |
"\n\nipsec_tunnel_start_xmit: STARTING");
|
| 938 |
|
| 939 |
stat = IPSEC_XMIT_ERRMEMALLOC;
|
| 940 |
ixs = ipsec_xmit_state_new();
|
| 941 |
if (! ixs) {
|
| 942 |
netif_stop_queue(dev);
|
| 943 |
return NETDEV_TX_BUSY;
|
| 944 |
}
|
| 945 |
|
| 946 |
ixs->dev = dev;
|
| 947 |
ixs->skb = skb;
|
| 948 |
|
| 949 |
stat = ipsec_xmit_sanity_check_dev(ixs);
|
| 950 |
if(stat != IPSEC_XMIT_OK) {
|
| 951 |
goto cleanup;
|
| 952 |
}
|
| 953 |
|
| 954 |
stat = ipsec_xmit_sanity_check_skb(ixs);
|
| 955 |
if(stat != IPSEC_XMIT_OK) {
|
| 956 |
goto cleanup;
|
| 957 |
}
|
| 958 |
|
| 959 |
stat = ipsec_tunnel_strip_hard_header(ixs);
|
| 960 |
if(stat != IPSEC_XMIT_OK) {
|
| 961 |
goto cleanup;
|
| 962 |
}
|
| 963 |
|
| 964 |
stat = ipsec_tunnel_SAlookup(ixs);
|
| 965 |
if(stat != IPSEC_XMIT_OK) {
|
| 966 |
KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
|
| 967 |
"klips_debug:ipsec_tunnel_start_xmit: SAlookup failed: %d\n",
|
| 968 |
stat);
|
| 969 |
goto cleanup;
|
| 970 |
}
|
| 971 |
|
| 972 |
ixs->innersrc = ixs->iph->saddr;
|
| 973 |
|
| 974 |
ixs->xsm_complete = ipsec_tunnel_xsm_complete;
|
| 975 |
|
| 976 |
ipsec_xsm(ixs);
|
| 977 |
return 0;
|
| 978 |
|
| 979 |
cleanup:
|
| 980 |
ipsec_xmit_cleanup(ixs);
|
| 981 |
ipsec_xmit_state_delete(ixs);
|
| 982 |
return 0;
|
| 983 |
}
|
| 984 |
|
| 985 |
DEBUG_NO_STATIC struct net_device_stats *
|
| 986 |
ipsec_tunnel_get_stats(struct net_device *dev)
|
| 987 |
{
|
| 988 |
return &(((struct ipsecpriv *)netdev_priv(dev))->mystats);
|
| 989 |
}
|
| 990 |
|
| 991 |
/*
|
| 992 |
* Revectored calls.
|
| 993 |
* For each of these calls, a field exists in our private structure.
|
| 994 |
*/
|
| 995 |
|
| 996 |
DEBUG_NO_STATIC int
|
| 997 |
ipsec_tunnel_hard_header(struct sk_buff *skb, struct net_device *dev,
|
| 998 |
unsigned short type, const void *daddr, const void *saddr, unsigned len)
|
| 999 |
{
|
| 1000 |
struct ipsecpriv *prv = netdev_priv(dev);
|
| 1001 |
struct net_device *tmp;
|
| 1002 |
int ret;
|
| 1003 |
struct net_device_stats *stats; /* This device's statistics */
|
| 1004 |
|
| 1005 |
if(skb == NULL) {
|
| 1006 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1007 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 1008 |
"no skb...\n");
|
| 1009 |
return -ENODATA;
|
| 1010 |
}
|
| 1011 |
|
| 1012 |
if(dev == NULL) {
|
| 1013 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1014 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 1015 |
"no device...\n");
|
| 1016 |
return -ENODEV;
|
| 1017 |
}
|
| 1018 |
|
| 1019 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1020 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 1021 |
"skb->dev=%s dev=%s.\n",
|
| 1022 |
skb->dev ? skb->dev->name : "NULL",
|
| 1023 |
dev->name);
|
| 1024 |
|
| 1025 |
if(prv == NULL) {
|
| 1026 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1027 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 1028 |
"no private space associated with dev=%s\n",
|
| 1029 |
dev->name ? dev->name : "NULL");
|
| 1030 |
return -ENODEV;
|
| 1031 |
}
|
| 1032 |
|
| 1033 |
stats = (struct net_device_stats *) &(prv->mystats);
|
| 1034 |
|
| 1035 |
if(prv->dev == NULL) {
|
| 1036 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1037 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 1038 |
"no physical device associated with dev=%s\n",
|
| 1039 |
dev->name ? dev->name : "NULL");
|
| 1040 |
stats->tx_dropped++;
|
| 1041 |
return -ENODEV;
|
| 1042 |
}
|
| 1043 |
|
| 1044 |
/* check if we have to send a IPv6 packet. It might be a Router
|
| 1045 |
Solicitation, where the building of the packet happens in
|
| 1046 |
reverse order:
|
| 1047 |
1. ll hdr,
|
| 1048 |
2. IPv6 hdr,
|
| 1049 |
3. ICMPv6 hdr
|
| 1050 |
-> skb->nh.raw is still uninitialized when this function is
|
| 1051 |
called!! If this is no IPv6 packet, we can print debugging
|
| 1052 |
messages, otherwise we skip all debugging messages and just
|
| 1053 |
build the ll header */
|
| 1054 |
if(type != ETH_P_IPV6) {
|
| 1055 |
/* execute this only, if we don't have to build the
|
| 1056 |
header for a IPv6 packet */
|
| 1057 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 1058 |
if(!prv->header_ops->create)
|
| 1059 |
#else
|
| 1060 |
if(!prv->hard_header)
|
| 1061 |
#endif
|
| 1062 |
{
|
| 1063 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1064 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 1065 |
"physical device has been detached, packet dropped 0p%p->0p%p len=%d type=%d dev=%s->NULL ",
|
| 1066 |
saddr,
|
| 1067 |
daddr,
|
| 1068 |
len,
|
| 1069 |
type,
|
| 1070 |
dev->name);
|
| 1071 |
#ifdef NET_21
|
| 1072 |
KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
|
| 1073 |
"ip=%08x->%08x\n",
|
| 1074 |
(__u32)ntohl(ip_hdr(skb)->saddr),
|
| 1075 |
(__u32)ntohl(ip_hdr(skb)->daddr) );
|
| 1076 |
#else /* NET_21 */
|
| 1077 |
KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
|
| 1078 |
"ip=%08x->%08x\n",
|
| 1079 |
(__u32)ntohl(skb->ip_hdr->saddr),
|
| 1080 |
(__u32)ntohl(skb->ip_hdr->daddr) );
|
| 1081 |
#endif /* NET_21 */
|
| 1082 |
stats->tx_dropped++;
|
| 1083 |
return -ENODEV;
|
| 1084 |
}
|
| 1085 |
|
| 1086 |
#define da ((struct net_device *)(prv->dev))->dev_addr
|
| 1087 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1088 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 1089 |
"Revectored 0p%p->0p%p len=%d type=%d dev=%s->%s dev_addr=%02x:%02x:%02x:%02x:%02x:%02x ",
|
| 1090 |
saddr,
|
| 1091 |
daddr,
|
| 1092 |
len,
|
| 1093 |
type,
|
| 1094 |
dev->name,
|
| 1095 |
prv->dev->name,
|
| 1096 |
da[0], da[1], da[2], da[3], da[4], da[5]);
|
| 1097 |
#ifdef NET_21
|
| 1098 |
KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
|
| 1099 |
"ip=%08x->%08x\n",
|
| 1100 |
(__u32)ntohl(ip_hdr(skb)->saddr),
|
| 1101 |
(__u32)ntohl(ip_hdr(skb)->daddr) );
|
| 1102 |
#else /* NET_21 */
|
| 1103 |
KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
|
| 1104 |
"ip=%08x->%08x\n",
|
| 1105 |
(__u32)ntohl(skb->ip_hdr->saddr),
|
| 1106 |
(__u32)ntohl(skb->ip_hdr->daddr) );
|
| 1107 |
#endif /* NET_21 */
|
| 1108 |
} else {
|
| 1109 |
KLIPS_PRINT(debug_tunnel,
|
| 1110 |
"klips_debug:ipsec_tunnel_hard_header: "
|
| 1111 |
"is IPv6 packet, skip debugging messages, only revector and build linklocal header.\n");
|
| 1112 |
}
|
| 1113 |
tmp = skb->dev;
|
| 1114 |
skb->dev = prv->dev;
|
| 1115 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 1116 |
ret = prv->header_ops->create(skb, prv->dev, type, (void *)daddr, (void *)saddr, len);
|
| 1117 |
#else
|
| 1118 |
ret = prv->hard_header(skb, prv->dev, type, (void *)daddr, (void *)saddr, len);
|
| 1119 |
#endif
|
| 1120 |
skb->dev = tmp;
|
| 1121 |
return ret;
|
| 1122 |
}
|
| 1123 |
|
| 1124 |
DEBUG_NO_STATIC int
|
| 1125 |
#ifdef NET_21
|
| 1126 |
ipsec_tunnel_rebuild_header(struct sk_buff *skb)
|
| 1127 |
#else /* NET_21 */
|
| 1128 |
ipsec_tunnel_rebuild_header(void *buff, struct net_device *dev,
|
| 1129 |
unsigned long raddr, struct sk_buff *skb)
|
| 1130 |
#endif /* NET_21 */
|
| 1131 |
{
|
| 1132 |
struct ipsecpriv *prv = netdev_priv(skb->dev);
|
| 1133 |
struct net_device *tmp;
|
| 1134 |
int ret;
|
| 1135 |
struct net_device_stats *stats; /* This device's statistics */
|
| 1136 |
|
| 1137 |
if(skb->dev == NULL) {
|
| 1138 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1139 |
"klips_debug:ipsec_tunnel_rebuild_header: "
|
| 1140 |
"no device...");
|
| 1141 |
return -ENODEV;
|
| 1142 |
}
|
| 1143 |
|
| 1144 |
if(prv == NULL) {
|
| 1145 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1146 |
"klips_debug:ipsec_tunnel_rebuild_header: "
|
| 1147 |
"no private space associated with dev=%s",
|
| 1148 |
skb->dev->name ? skb->dev->name : "NULL");
|
| 1149 |
return -ENODEV;
|
| 1150 |
}
|
| 1151 |
|
| 1152 |
stats = (struct net_device_stats *) &(prv->mystats);
|
| 1153 |
|
| 1154 |
if(prv->dev == NULL) {
|
| 1155 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1156 |
"klips_debug:ipsec_tunnel_rebuild_header: "
|
| 1157 |
"no physical device associated with dev=%s",
|
| 1158 |
skb->dev->name ? skb->dev->name : "NULL");
|
| 1159 |
stats->tx_dropped++;
|
| 1160 |
return -ENODEV;
|
| 1161 |
}
|
| 1162 |
|
| 1163 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 1164 |
if(!prv->header_ops->rebuild)
|
| 1165 |
#else
|
| 1166 |
if(!prv->rebuild_header)
|
| 1167 |
#endif
|
| 1168 |
{
|
| 1169 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1170 |
"klips_debug:ipsec_tunnel_rebuild_header: "
|
| 1171 |
"physical device has been detached, packet dropped skb->dev=%s->NULL ",
|
| 1172 |
skb->dev->name);
|
| 1173 |
#ifdef NET_21
|
| 1174 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1175 |
"ip=%08x->%08x\n",
|
| 1176 |
(__u32)ntohl(ip_hdr(skb)->saddr),
|
| 1177 |
(__u32)ntohl(ip_hdr(skb)->daddr) );
|
| 1178 |
#else /* NET_21 */
|
| 1179 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1180 |
"ip=%08x->%08x\n",
|
| 1181 |
(__u32)ntohl(skb->ip_hdr->saddr),
|
| 1182 |
(__u32)ntohl(skb->ip_hdr->daddr) );
|
| 1183 |
#endif /* NET_21 */
|
| 1184 |
stats->tx_dropped++;
|
| 1185 |
return -ENODEV;
|
| 1186 |
}
|
| 1187 |
|
| 1188 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1189 |
"klips_debug:ipsec_tunnel: "
|
| 1190 |
"Revectored rebuild_header dev=%s->%s ",
|
| 1191 |
skb->dev->name, prv->dev->name);
|
| 1192 |
#ifdef NET_21
|
| 1193 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1194 |
"ip=%08x->%08x\n",
|
| 1195 |
(__u32)ntohl(ip_hdr(skb)->saddr),
|
| 1196 |
(__u32)ntohl(ip_hdr(skb)->daddr) );
|
| 1197 |
#else /* NET_21 */
|
| 1198 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1199 |
"ip=%08x->%08x\n",
|
| 1200 |
(__u32)ntohl(skb->ip_hdr->saddr),
|
| 1201 |
(__u32)ntohl(skb->ip_hdr->daddr) );
|
| 1202 |
#endif /* NET_21 */
|
| 1203 |
tmp = skb->dev;
|
| 1204 |
skb->dev = prv->dev;
|
| 1205 |
|
| 1206 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 1207 |
ret = prv->header_ops->rebuild(skb);
|
| 1208 |
#else
|
| 1209 |
#ifdef NET_21
|
| 1210 |
ret = prv->rebuild_header(skb);
|
| 1211 |
#else /* NET_21 */
|
| 1212 |
ret = prv->rebuild_header(buff, prv->dev, raddr, skb);
|
| 1213 |
#endif /* NET_21 */
|
| 1214 |
#endif
|
| 1215 |
skb->dev = tmp;
|
| 1216 |
return ret;
|
| 1217 |
}
|
| 1218 |
|
| 1219 |
#ifdef HAVE_SET_MAC_ADDR
|
| 1220 |
DEBUG_NO_STATIC int
|
| 1221 |
ipsec_tunnel_set_mac_address(struct net_device *dev, void *addr)
|
| 1222 |
{
|
| 1223 |
struct ipsecpriv *prv = netdev_priv(dev);
|
| 1224 |
|
| 1225 |
struct net_device_stats *stats; /* This device's statistics */
|
| 1226 |
|
| 1227 |
if(dev == NULL) {
|
| 1228 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1229 |
"klips_debug:ipsec_tunnel_set_mac_address: "
|
| 1230 |
"no device...");
|
| 1231 |
return -ENODEV;
|
| 1232 |
}
|
| 1233 |
|
| 1234 |
if(prv == NULL) {
|
| 1235 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1236 |
"klips_debug:ipsec_tunnel_set_mac_address: "
|
| 1237 |
"no private space associated with dev=%s",
|
| 1238 |
dev->name ? dev->name : "NULL");
|
| 1239 |
return -ENODEV;
|
| 1240 |
}
|
| 1241 |
|
| 1242 |
stats = (struct net_device_stats *) &(prv->mystats);
|
| 1243 |
|
| 1244 |
if(prv->dev == NULL) {
|
| 1245 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1246 |
"klips_debug:ipsec_tunnel_set_mac_address: "
|
| 1247 |
"no physical device associated with dev=%s",
|
| 1248 |
dev->name ? dev->name : "NULL");
|
| 1249 |
stats->tx_dropped++;
|
| 1250 |
return -ENODEV;
|
| 1251 |
}
|
| 1252 |
|
| 1253 |
if(!prv->dev) {
|
| 1254 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1255 |
"klips_debug:ipsec_tunnel_set_mac_address: "
|
| 1256 |
"physical device has been detached, cannot set - skb->dev=%s->NULL\n",
|
| 1257 |
dev->name);
|
| 1258 |
return -ENODEV;
|
| 1259 |
}
|
| 1260 |
|
| 1261 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1262 |
"klips_debug:ipsec_tunnel_set_mac_address: "
|
| 1263 |
"Revectored dev=%s->%s addr=0p%p\n",
|
| 1264 |
dev->name, prv->dev->name, addr);
|
| 1265 |
return prv->set_mac_address(prv->dev, addr);
|
| 1266 |
|
| 1267 |
}
|
| 1268 |
#endif /* HAVE_SET_MAC_ADDR */
|
| 1269 |
|
| 1270 |
#ifndef NET_21
|
| 1271 |
DEBUG_NO_STATIC void
|
| 1272 |
ipsec_tunnel_cache_bind(struct hh_cache **hhp, struct net_device *dev,
|
| 1273 |
unsigned short htype, __u32 daddr)
|
| 1274 |
{
|
| 1275 |
struct ipsecpriv *prv = (struct ipsecpriv *) netdev_priv(dev);
|
| 1276 |
|
| 1277 |
struct net_device_stats *stats; /* This device's statistics */
|
| 1278 |
|
| 1279 |
if(dev == NULL) {
|
| 1280 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1281 |
"klips_debug:ipsec_tunnel_cache_bind: "
|
| 1282 |
"no device...");
|
| 1283 |
return;
|
| 1284 |
}
|
| 1285 |
|
| 1286 |
if(prv == NULL) {
|
| 1287 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1288 |
"klips_debug:ipsec_tunnel_cache_bind: "
|
| 1289 |
"no private space associated with dev=%s",
|
| 1290 |
dev->name ? dev->name : "NULL");
|
| 1291 |
return;
|
| 1292 |
}
|
| 1293 |
|
| 1294 |
stats = (struct net_device_stats *) &(prv->mystats);
|
| 1295 |
|
| 1296 |
if(prv->dev == NULL) {
|
| 1297 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1298 |
"klips_debug:ipsec_tunnel_cache_bind: "
|
| 1299 |
"no physical device associated with dev=%s",
|
| 1300 |
dev->name ? dev->name : "NULL");
|
| 1301 |
stats->tx_dropped++;
|
| 1302 |
return;
|
| 1303 |
}
|
| 1304 |
|
| 1305 |
if(!prv->header_cache_bind) {
|
| 1306 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1307 |
"klips_debug:ipsec_tunnel_cache_bind: "
|
| 1308 |
"physical device has been detached, cannot set - skb->dev=%s->NULL\n",
|
| 1309 |
dev->name);
|
| 1310 |
stats->tx_dropped++;
|
| 1311 |
return;
|
| 1312 |
}
|
| 1313 |
|
| 1314 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1315 |
"klips_debug:ipsec_tunnel_cache_bind: "
|
| 1316 |
"Revectored \n");
|
| 1317 |
prv->header_cache_bind(hhp, prv->dev, htype, daddr);
|
| 1318 |
return;
|
| 1319 |
}
|
| 1320 |
#endif /* !NET_21 */
|
| 1321 |
|
| 1322 |
|
| 1323 |
DEBUG_NO_STATIC void
|
| 1324 |
ipsec_tunnel_cache_update(struct hh_cache *hh, const struct net_device *dev,
|
| 1325 |
const unsigned char * haddr)
|
| 1326 |
{
|
| 1327 |
struct ipsecpriv *prv = netdev_priv(dev);
|
| 1328 |
|
| 1329 |
struct net_device_stats *stats; /* This device's statistics */
|
| 1330 |
|
| 1331 |
if(dev == NULL) {
|
| 1332 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1333 |
"klips_debug:ipsec_tunnel_cache_update: "
|
| 1334 |
"no device...");
|
| 1335 |
return;
|
| 1336 |
}
|
| 1337 |
|
| 1338 |
if(prv == NULL) {
|
| 1339 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1340 |
"klips_debug:ipsec_tunnel_cache_update: "
|
| 1341 |
"no private space associated with dev=%s",
|
| 1342 |
dev->name ? dev->name : "NULL");
|
| 1343 |
return;
|
| 1344 |
}
|
| 1345 |
|
| 1346 |
stats = (struct net_device_stats *) &(prv->mystats);
|
| 1347 |
|
| 1348 |
if(prv->dev == NULL) {
|
| 1349 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1350 |
"klips_debug:ipsec_tunnel_cache_update: "
|
| 1351 |
"no physical device associated with dev=%s",
|
| 1352 |
dev->name ? dev->name : "NULL");
|
| 1353 |
stats->tx_dropped++;
|
| 1354 |
return;
|
| 1355 |
}
|
| 1356 |
|
| 1357 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 1358 |
if(!prv->header_ops->cache_update)
|
| 1359 |
#else
|
| 1360 |
if(!prv->header_cache_update)
|
| 1361 |
#endif
|
| 1362 |
{
|
| 1363 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1364 |
"klips_debug:ipsec_tunnel_cache_update: "
|
| 1365 |
"physical device has been detached, cannot set - skb->dev=%s->NULL\n",
|
| 1366 |
dev->name);
|
| 1367 |
return;
|
| 1368 |
}
|
| 1369 |
|
| 1370 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1371 |
"klips_debug:ipsec_tunnel: "
|
| 1372 |
"Revectored cache_update\n");
|
| 1373 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 1374 |
prv->header_ops->cache_update(hh, prv->dev, haddr);
|
| 1375 |
#else
|
| 1376 |
prv->header_cache_update(hh, prv->dev, haddr);
|
| 1377 |
#endif
|
| 1378 |
return;
|
| 1379 |
}
|
| 1380 |
|
| 1381 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 1382 |
const struct header_ops ipsec_tunnel_header_ops = {
|
| 1383 |
.create = ipsec_tunnel_hard_header,
|
| 1384 |
.rebuild = ipsec_tunnel_rebuild_header,
|
| 1385 |
.cache_update = ipsec_tunnel_cache_update,
|
| 1386 |
};
|
| 1387 |
#endif
|
| 1388 |
|
| 1389 |
#ifdef NET_21
|
| 1390 |
DEBUG_NO_STATIC int
|
| 1391 |
ipsec_tunnel_neigh_setup(struct neighbour *n)
|
| 1392 |
{
|
| 1393 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1394 |
"klips_debug:ipsec_tunnel_neigh_setup:\n");
|
| 1395 |
|
| 1396 |
if (n->nud_state == NUD_NONE) {
|
| 1397 |
n->ops = &arp_broken_ops;
|
| 1398 |
n->output = n->ops->output;
|
| 1399 |
}
|
| 1400 |
return 0;
|
| 1401 |
}
|
| 1402 |
|
| 1403 |
DEBUG_NO_STATIC int
|
| 1404 |
ipsec_tunnel_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p)
|
| 1405 |
{
|
| 1406 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1407 |
"klips_debug:ipsec_tunnel_neigh_setup_dev: "
|
| 1408 |
"setting up %s\n",
|
| 1409 |
dev ? dev->name : "NULL");
|
| 1410 |
|
| 1411 |
if (p->tbl->family == AF_INET) {
|
| 1412 |
p->neigh_setup = ipsec_tunnel_neigh_setup;
|
| 1413 |
p->ucast_probes = 0;
|
| 1414 |
p->mcast_probes = 0;
|
| 1415 |
}
|
| 1416 |
return 0;
|
| 1417 |
}
|
| 1418 |
#endif /* NET_21 */
|
| 1419 |
|
| 1420 |
/*
|
| 1421 |
* We call the detach routine to detach the ipsec tunnel from another device.
|
| 1422 |
*/
|
| 1423 |
|
| 1424 |
DEBUG_NO_STATIC int
|
| 1425 |
ipsec_tunnel_detach(struct net_device *dev)
|
| 1426 |
{
|
| 1427 |
int i;
|
| 1428 |
struct ipsecpriv *prv = netdev_priv(dev);
|
| 1429 |
|
| 1430 |
if(dev == NULL) {
|
| 1431 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1432 |
"klips_debug:ipsec_tunnel_detach: "
|
| 1433 |
"no device...");
|
| 1434 |
return -ENODEV;
|
| 1435 |
}
|
| 1436 |
|
| 1437 |
if(prv == NULL) {
|
| 1438 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 1439 |
"klips_debug:ipsec_tunnel_detach: "
|
| 1440 |
"no private space associated with dev=%s",
|
| 1441 |
dev->name ? dev->name : "NULL");
|
| 1442 |
return -ENODATA;
|
| 1443 |
}
|
| 1444 |
|
| 1445 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1446 |
"klips_debug:ipsec_tunnel_detach: "
|
| 1447 |
"physical device %s being detached from virtual device %s\n",
|
| 1448 |
prv->dev ? prv->dev->name : "NULL",
|
| 1449 |
dev->name);
|
| 1450 |
|
| 1451 |
ipsec_dev_put(prv->dev);
|
| 1452 |
prv->dev = NULL;
|
| 1453 |
prv->hard_start_xmit = NULL;
|
| 1454 |
prv->get_stats = NULL;
|
| 1455 |
|
| 1456 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 1457 |
prv->header_ops = NULL;
|
| 1458 |
#else
|
| 1459 |
prv->hard_header = NULL;
|
| 1460 |
prv->rebuild_header = NULL;
|
| 1461 |
prv->header_cache_update = NULL;
|
| 1462 |
#ifndef NET_21
|
| 1463 |
prv->header_cache_bind = NULL;
|
| 1464 |
#else
|
| 1465 |
/* prv->neigh_setup = NULL; */
|
| 1466 |
#endif
|
| 1467 |
#endif
|
| 1468 |
prv->set_mac_address = NULL;
|
| 1469 |
dev->hard_header_len = 0;
|
| 1470 |
|
| 1471 |
#ifdef DETACH_AND_DOWN
|
| 1472 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 1473 |
dev->header_ops = NULL;
|
| 1474 |
#else
|
| 1475 |
dev->hard_header = NULL;
|
| 1476 |
dev->rebuild_header = NULL;
|
| 1477 |
dev->header_cache_update = NULL;
|
| 1478 |
#ifndef NET_21
|
| 1479 |
dev->header_cache_bind = NULL;
|
| 1480 |
#else
|
| 1481 |
dev->neigh_setup = NULL;
|
| 1482 |
#endif
|
| 1483 |
#endif
|
| 1484 |
#ifdef HAVE_SET_MAC_ADDR
|
| 1485 |
dev->set_mac_address = NULL;
|
| 1486 |
#endif
|
| 1487 |
dev->mtu = 0;
|
| 1488 |
#endif /* DETACH_AND_DOWN */
|
| 1489 |
|
| 1490 |
prv->mtu = 0;
|
| 1491 |
for (i=0; i<MAX_ADDR_LEN; i++) {
|
| 1492 |
dev->dev_addr[i] = 0;
|
| 1493 |
}
|
| 1494 |
dev->addr_len = 0;
|
| 1495 |
#ifdef PHYSDEV_TYPE
|
| 1496 |
dev->type = ARPHRD_VOID; /* ARPHRD_TUNNEL; */
|
| 1497 |
#endif /* PHYSDEV_TYPE */
|
| 1498 |
|
| 1499 |
return 0;
|
| 1500 |
}
|
| 1501 |
|
| 1502 |
/*
|
| 1503 |
* We call the clear routine to detach all ipsec tunnels from other devices.
|
| 1504 |
*/
|
| 1505 |
DEBUG_NO_STATIC int
|
| 1506 |
ipsec_tunnel_clear(void)
|
| 1507 |
{
|
| 1508 |
int i;
|
| 1509 |
struct net_device *ipsecdev = NULL, *prvdev;
|
| 1510 |
struct ipsecpriv *prv;
|
| 1511 |
int ret;
|
| 1512 |
|
| 1513 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1514 |
"klips_debug:ipsec_tunnel_clear: .\n");
|
| 1515 |
|
| 1516 |
for(i = 0; i < IPSEC_NUM_IF; i++) {
|
| 1517 |
ipsecdev = ipsecdevices[i];
|
| 1518 |
if(ipsecdev != NULL) {
|
| 1519 |
if((prv = (struct ipsecpriv *)netdev_priv(ipsecdev))) {
|
| 1520 |
prvdev = (struct net_device *)(prv->dev);
|
| 1521 |
if(prvdev) {
|
| 1522 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1523 |
"klips_debug:ipsec_tunnel_clear: "
|
| 1524 |
"physical device for device %s is %s\n",
|
| 1525 |
ipsecdev->name, prvdev->name);
|
| 1526 |
if((ret = ipsec_tunnel_detach(ipsecdev))) {
|
| 1527 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1528 |
"klips_debug:ipsec_tunnel_clear: "
|
| 1529 |
"error %d detatching device %s from device %s.\n",
|
| 1530 |
ret, ipsecdev->name, prvdev->name);
|
| 1531 |
return ret;
|
| 1532 |
}
|
| 1533 |
}
|
| 1534 |
}
|
| 1535 |
}
|
| 1536 |
}
|
| 1537 |
return 0;
|
| 1538 |
}
|
| 1539 |
|
| 1540 |
/*
|
| 1541 |
* Used mostly for KLIPS to setup interface, for also with NETKEY when using
|
| 1542 |
* 2.6.23+ UDP XFRM code to mark sockets UDP_ENCAP_ESPINUDP_NON_IKE
|
| 1543 |
*/
|
| 1544 |
DEBUG_NO_STATIC int
|
| 1545 |
ipsec_tunnel_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
| 1546 |
{
|
| 1547 |
/* struct ipsectunnelconf *cf = (struct ipsectunnelconf *)&ifr->ifr_data;*/
|
| 1548 |
/* overlay our struct ipsectunnel onto ifr.ifr_ifru union (hope it fits!) */
|
| 1549 |
struct ipsectunnelconf *cf=(struct ipsectunnelconf *)ifr->ifr_ifru.ifru_newname;
|
| 1550 |
struct ipsecpriv *prv = netdev_priv(dev);
|
| 1551 |
struct net_device *them; /* physical device */
|
| 1552 |
#ifdef CONFIG_IP_ALIAS
|
| 1553 |
char *colon;
|
| 1554 |
char realphysname[IFNAMSIZ];
|
| 1555 |
#endif /* CONFIG_IP_ALIAS */
|
| 1556 |
|
| 1557 |
if(dev == NULL) {
|
| 1558 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1559 |
"klips_debug:ipsec_tunnel_ioctl: "
|
| 1560 |
"device not supplied.\n");
|
| 1561 |
return -ENODEV;
|
| 1562 |
}
|
| 1563 |
|
| 1564 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1565 |
"klips_debug:ipsec_tunnel_ioctl: "
|
| 1566 |
"tncfg service call #%d for dev=%s\n",
|
| 1567 |
cmd,
|
| 1568 |
dev->name ? dev->name : "NULL");
|
| 1569 |
switch (cmd) {
|
| 1570 |
#if defined(KLIPS)
|
| 1571 |
/* attach a virtual ipsec? device to a physical device */
|
| 1572 |
case IPSEC_SET_DEV:
|
| 1573 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1574 |
"klips_debug:ipsec_tunnel_ioctl: "
|
| 1575 |
"calling ipsec_tunnel_attatch...\n");
|
| 1576 |
#ifdef CONFIG_IP_ALIAS
|
| 1577 |
/* If this is an IP alias interface, get its real physical name */
|
| 1578 |
strncpy(realphysname, cf->cf_name, IFNAMSIZ);
|
| 1579 |
realphysname[IFNAMSIZ-1] = 0;
|
| 1580 |
colon = strchr(realphysname, ':');
|
| 1581 |
if (colon) *colon = 0;
|
| 1582 |
them = ipsec_dev_get(realphysname);
|
| 1583 |
#else /* CONFIG_IP_ALIAS */
|
| 1584 |
them = ipsec_dev_get(cf->cf_name);
|
| 1585 |
#endif /* CONFIG_IP_ALIAS */
|
| 1586 |
|
| 1587 |
if (them == NULL) {
|
| 1588 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1589 |
"klips_debug:ipsec_tunnel_ioctl: "
|
| 1590 |
"physical device %s requested is null\n",
|
| 1591 |
cf->cf_name);
|
| 1592 |
return -ENXIO;
|
| 1593 |
}
|
| 1594 |
|
| 1595 |
#if 0
|
| 1596 |
if (them->flags & IFF_UP) {
|
| 1597 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1598 |
"klips_debug:ipsec_tunnel_ioctl: "
|
| 1599 |
"physical device %s requested is not up.\n",
|
| 1600 |
cf->cf_name);
|
| 1601 |
ipsec_dev_put(them);
|
| 1602 |
return -ENXIO;
|
| 1603 |
}
|
| 1604 |
#endif
|
| 1605 |
|
| 1606 |
if (prv && prv->dev) {
|
| 1607 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1608 |
"klips_debug:ipsec_tunnel_ioctl: "
|
| 1609 |
"virtual device is already connected to %s.\n",
|
| 1610 |
prv->dev->name ? prv->dev->name : "NULL");
|
| 1611 |
ipsec_dev_put(them);
|
| 1612 |
return -EBUSY;
|
| 1613 |
}
|
| 1614 |
return ipsec_tunnel_attach(dev, them);
|
| 1615 |
|
| 1616 |
case IPSEC_DEL_DEV:
|
| 1617 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1618 |
"klips_debug:ipsec_tunnel_ioctl: "
|
| 1619 |
"calling ipsec_tunnel_detatch.\n");
|
| 1620 |
if (! prv->dev) {
|
| 1621 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1622 |
"klips_debug:ipsec_tunnel_ioctl: "
|
| 1623 |
"physical device not connected.\n");
|
| 1624 |
return -ENODEV;
|
| 1625 |
}
|
| 1626 |
return ipsec_tunnel_detach(dev);
|
| 1627 |
|
| 1628 |
case IPSEC_CLR_DEV:
|
| 1629 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1630 |
"klips_debug:ipsec_tunnel_ioctl: "
|
| 1631 |
"calling ipsec_tunnel_clear.\n");
|
| 1632 |
return ipsec_tunnel_clear();
|
| 1633 |
#endif /* KLIPS */
|
| 1634 |
|
| 1635 |
#ifdef HAVE_UDP_ENCAP_CONVERT
|
| 1636 |
/*
|
| 1637 |
* we get two int args in ifr_data, the socket fd (0)
|
| 1638 |
* and the type of encapsulation needed (1).
|
| 1639 |
*/
|
| 1640 |
case IPSEC_UDP_ENCAP_CONVERT:
|
| 1641 |
{
|
| 1642 |
/*unsigned int *ifp =(unsigned int *)&ifr->ifr_data;*/
|
| 1643 |
/* overlay our struct ipsectunnel onto ifr.ifr_ifru union (hope it fits!) */
|
| 1644 |
unsigned int *ifp =(unsigned int *)ifr->ifr_ifru.ifru_newname;
|
| 1645 |
const struct socket *sock;
|
| 1646 |
int err = 0;
|
| 1647 |
|
| 1648 |
/* translate # to socket structure */
|
| 1649 |
sock = sockfd_lookup(ifp[0], &err);
|
| 1650 |
if (!sock)
|
| 1651 |
goto encap_out;
|
| 1652 |
|
| 1653 |
/* check that it's a UDP socket */
|
| 1654 |
udp_sk(sock->sk)->encap_type = ifp[1];
|
| 1655 |
udp_sk(sock->sk)->encap_rcv = klips26_udp_encap_rcv;
|
| 1656 |
|
| 1657 |
KLIPS_PRINT(debug_tunnel
|
| 1658 |
, "UDP socket: %u set to %s (0x%x) encap mode\n"
|
| 1659 |
, ifp[0]
|
| 1660 |
, ifp[1] == UDP_ENCAP_ESPINUDP_NON_IKE ?
|
| 1661 |
"UDP_ENCAP_ESPINUDP_NON_IKE" : "UDP_ENCAP_ESPINUDP_NON_ESP"
|
| 1662 |
, ifp[1]
|
| 1663 |
);
|
| 1664 |
|
| 1665 |
err = 0;
|
| 1666 |
|
| 1667 |
encap_out:
|
| 1668 |
return err;
|
| 1669 |
}
|
| 1670 |
#endif /* HAVE_UDP_ENCAP_CONVERT */
|
| 1671 |
|
| 1672 |
default:
|
| 1673 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1674 |
"klips_debug:ipsec_tunnel_ioctl: "
|
| 1675 |
"unknown command %d.\n",
|
| 1676 |
cmd);
|
| 1677 |
return -EOPNOTSUPP;
|
| 1678 |
|
| 1679 |
}
|
| 1680 |
}
|
| 1681 |
|
| 1682 |
struct net_device *ipsec_get_device(int inst)
|
| 1683 |
{
|
| 1684 |
struct net_device *ipsec_dev;
|
| 1685 |
|
| 1686 |
ipsec_dev = NULL;
|
| 1687 |
|
| 1688 |
if(inst < IPSEC_NUM_IF) {
|
| 1689 |
ipsec_dev = ipsecdevices[inst];
|
| 1690 |
}
|
| 1691 |
|
| 1692 |
return ipsec_dev;
|
| 1693 |
}
|
| 1694 |
|
| 1695 |
int
|
| 1696 |
ipsec_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
|
| 1697 |
{
|
| 1698 |
struct net_device *dev = ptr;
|
| 1699 |
struct net_device *ipsec_dev;
|
| 1700 |
struct ipsecpriv *priv;
|
| 1701 |
int i;
|
| 1702 |
|
| 1703 |
if (dev == NULL) {
|
| 1704 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1705 |
"klips_debug:ipsec_device_event: "
|
| 1706 |
"dev=NULL for event type %ld.\n",
|
| 1707 |
event);
|
| 1708 |
return(NOTIFY_DONE);
|
| 1709 |
}
|
| 1710 |
|
| 1711 |
/* check for loopback devices */
|
| 1712 |
if (dev && (dev->flags & IFF_LOOPBACK)) {
|
| 1713 |
return(NOTIFY_DONE);
|
| 1714 |
}
|
| 1715 |
|
| 1716 |
switch (event) {
|
| 1717 |
case NETDEV_DOWN:
|
| 1718 |
/* look very carefully at the scope of these compiler
|
| 1719 |
directives before changing anything... -- RGB */
|
| 1720 |
#ifdef NET_21
|
| 1721 |
case NETDEV_UNREGISTER:
|
| 1722 |
switch (event) {
|
| 1723 |
case NETDEV_DOWN:
|
| 1724 |
#endif /* NET_21 */
|
| 1725 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1726 |
"klips_debug:ipsec_device_event: "
|
| 1727 |
"NETDEV_DOWN dev=%s flags=%x\n",
|
| 1728 |
dev->name,
|
| 1729 |
dev->flags);
|
| 1730 |
if(strncmp(dev->name, "ipsec", strlen("ipsec")) == 0) {
|
| 1731 |
printk(KERN_CRIT "IPSEC EVENT: KLIPS device %s shut down.\n",
|
| 1732 |
dev->name);
|
| 1733 |
}
|
| 1734 |
#ifdef NET_21
|
| 1735 |
break;
|
| 1736 |
case NETDEV_UNREGISTER:
|
| 1737 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1738 |
"klips_debug:ipsec_device_event: "
|
| 1739 |
"NETDEV_UNREGISTER dev=%s flags=%x\n",
|
| 1740 |
dev->name,
|
| 1741 |
dev->flags);
|
| 1742 |
break;
|
| 1743 |
}
|
| 1744 |
#endif /* NET_21 */
|
| 1745 |
|
| 1746 |
/* find the attached physical device and detach it. */
|
| 1747 |
for(i = 0; i < IPSEC_NUM_IF; i++) {
|
| 1748 |
ipsec_dev = ipsecdevices[i];
|
| 1749 |
|
| 1750 |
if(ipsec_dev) {
|
| 1751 |
priv = (struct ipsecpriv *)netdev_priv(ipsec_dev);
|
| 1752 |
if(priv) {
|
| 1753 |
;
|
| 1754 |
if(((struct net_device *)(priv->dev)) == dev) {
|
| 1755 |
/* dev_close(ipsec_dev); */
|
| 1756 |
/* return */ ipsec_tunnel_detach(ipsec_dev);
|
| 1757 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1758 |
"klips_debug:ipsec_device_event: "
|
| 1759 |
"device '%s' has been detached.\n",
|
| 1760 |
ipsec_dev->name);
|
| 1761 |
break;
|
| 1762 |
}
|
| 1763 |
} else {
|
| 1764 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1765 |
"klips_debug:ipsec_device_event: "
|
| 1766 |
"device '%s' has no private data space!\n",
|
| 1767 |
ipsec_dev->name);
|
| 1768 |
}
|
| 1769 |
}
|
| 1770 |
}
|
| 1771 |
break;
|
| 1772 |
case NETDEV_UP:
|
| 1773 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1774 |
"klips_debug:ipsec_device_event: "
|
| 1775 |
"NETDEV_UP dev=%s\n",
|
| 1776 |
dev->name);
|
| 1777 |
break;
|
| 1778 |
#ifdef NET_21
|
| 1779 |
case NETDEV_REBOOT:
|
| 1780 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1781 |
"klips_debug:ipsec_device_event: "
|
| 1782 |
"NETDEV_REBOOT dev=%s\n",
|
| 1783 |
dev->name);
|
| 1784 |
break;
|
| 1785 |
case NETDEV_CHANGE:
|
| 1786 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1787 |
"klips_debug:ipsec_device_event: "
|
| 1788 |
"NETDEV_CHANGE dev=%s flags=%x\n",
|
| 1789 |
dev->name,
|
| 1790 |
dev->flags);
|
| 1791 |
break;
|
| 1792 |
case NETDEV_REGISTER:
|
| 1793 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1794 |
"klips_debug:ipsec_device_event: "
|
| 1795 |
"NETDEV_REGISTER dev=%s\n",
|
| 1796 |
dev->name);
|
| 1797 |
break;
|
| 1798 |
case NETDEV_CHANGEMTU:
|
| 1799 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1800 |
"klips_debug:ipsec_device_event: "
|
| 1801 |
"NETDEV_CHANGEMTU dev=%s to mtu=%d\n",
|
| 1802 |
dev->name,
|
| 1803 |
dev->mtu);
|
| 1804 |
break;
|
| 1805 |
case NETDEV_CHANGEADDR:
|
| 1806 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1807 |
"klips_debug:ipsec_device_event: "
|
| 1808 |
"NETDEV_CHANGEADDR dev=%s\n",
|
| 1809 |
dev->name);
|
| 1810 |
break;
|
| 1811 |
case NETDEV_GOING_DOWN:
|
| 1812 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1813 |
"klips_debug:ipsec_device_event: "
|
| 1814 |
"NETDEV_GOING_DOWN dev=%s\n",
|
| 1815 |
dev->name);
|
| 1816 |
break;
|
| 1817 |
case NETDEV_CHANGENAME:
|
| 1818 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1819 |
"klips_debug:ipsec_device_event: "
|
| 1820 |
"NETDEV_CHANGENAME dev=%s\n",
|
| 1821 |
dev->name);
|
| 1822 |
break;
|
| 1823 |
#endif /* NET_21 */
|
| 1824 |
default:
|
| 1825 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1826 |
"klips_debug:ipsec_device_event: "
|
| 1827 |
"event type %ld unrecognised for dev=%s\n",
|
| 1828 |
event,
|
| 1829 |
dev->name);
|
| 1830 |
break;
|
| 1831 |
}
|
| 1832 |
return NOTIFY_DONE;
|
| 1833 |
}
|
| 1834 |
|
| 1835 |
/*
|
| 1836 |
* Called when an ipsec tunnel device is initialized.
|
| 1837 |
* The ipsec tunnel device structure is passed to us.
|
| 1838 |
*/
|
| 1839 |
|
| 1840 |
int
|
| 1841 |
ipsec_tunnel_init(struct net_device *dev)
|
| 1842 |
{
|
| 1843 |
int i;
|
| 1844 |
|
| 1845 |
KLIPS_PRINT(debug_tunnel,
|
| 1846 |
"klips_debug:ipsec_tunnel_init: "
|
| 1847 |
"allocating %lu bytes initialising device: %s\n",
|
| 1848 |
(unsigned long) sizeof(struct ipsecpriv),
|
| 1849 |
dev->name ? dev->name : "NULL");
|
| 1850 |
|
| 1851 |
#ifdef alloc_netdev
|
| 1852 |
dev->destructor = free_netdev;
|
| 1853 |
#endif
|
| 1854 |
|
| 1855 |
#ifndef HAVE_NETDEV_PRIV
|
| 1856 |
{
|
| 1857 |
struct ipsecpriv *priv_dev;
|
| 1858 |
priv_dev = kmalloc(sizeof(struct ipsecpriv), GFP_KERNEL);
|
| 1859 |
if (priv_dev == NULL)
|
| 1860 |
return;
|
| 1861 |
dev->priv = priv_net;
|
| 1862 |
}
|
| 1863 |
#endif
|
| 1864 |
memset((caddr_t)netdev_priv(dev), 0, sizeof(struct ipsecpriv));
|
| 1865 |
|
| 1866 |
for(i = 0; i < sizeof(zeroes); i++) {
|
| 1867 |
((__u8*)(zeroes))[i] = 0;
|
| 1868 |
}
|
| 1869 |
|
| 1870 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 1871 |
dev->header_ops = NULL;
|
| 1872 |
#else
|
| 1873 |
dev->hard_header = NULL;
|
| 1874 |
dev->rebuild_header = NULL;
|
| 1875 |
#ifndef NET_21
|
| 1876 |
dev->header_cache_bind = NULL;
|
| 1877 |
#endif /* !NET_21 */
|
| 1878 |
dev->header_cache_update= NULL;
|
| 1879 |
#endif
|
| 1880 |
#ifdef HAVE_NET_DEVICE_OPS
|
| 1881 |
dev->netdev_ops = &klips_device_ops;
|
| 1882 |
#else
|
| 1883 |
dev->open = ipsec_tunnel_open;
|
| 1884 |
dev->stop = ipsec_tunnel_close;
|
| 1885 |
dev->hard_start_xmit = ipsec_tunnel_start_xmit;
|
| 1886 |
dev->get_stats = ipsec_tunnel_get_stats;
|
| 1887 |
#ifdef HAVE_SET_MAC_ADDR
|
| 1888 |
dev->set_mac_address = NULL;
|
| 1889 |
#endif
|
| 1890 |
dev->do_ioctl = ipsec_tunnel_ioctl;
|
| 1891 |
dev->neigh_setup = ipsec_tunnel_neigh_setup_dev;
|
| 1892 |
#endif
|
| 1893 |
|
| 1894 |
#ifdef NET_21
|
| 1895 |
/* prv->neigh_setup = NULL; */
|
| 1896 |
#endif /* NET_21 */
|
| 1897 |
dev->hard_header_len = 0;
|
| 1898 |
dev->mtu = 0;
|
| 1899 |
dev->addr_len = 0;
|
| 1900 |
dev->type = ARPHRD_VOID; /* ARPHRD_TUNNEL; */ /* ARPHRD_ETHER; */
|
| 1901 |
dev->tx_queue_len = 10; /* Small queue */
|
| 1902 |
#ifdef IFF_XMIT_DST_RELEASE
|
| 1903 |
dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
|
| 1904 |
#endif
|
| 1905 |
memset((caddr_t)(dev->broadcast),0xFF, ETH_ALEN); /* what if this is not attached to ethernet? */
|
| 1906 |
|
| 1907 |
/* New-style flags. */
|
| 1908 |
dev->flags = IFF_NOARP /* 0 */ /* Petr Novak */;
|
| 1909 |
|
| 1910 |
/* We're done. Have I forgotten anything? */
|
| 1911 |
return 0;
|
| 1912 |
}
|
| 1913 |
|
| 1914 |
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
|
| 1915 |
/* Module specific interface (but it links with the rest of IPSEC) */
|
| 1916 |
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
|
| 1917 |
|
| 1918 |
int
|
| 1919 |
ipsec_tunnel_probe(struct net_device *dev)
|
| 1920 |
{
|
| 1921 |
ipsec_tunnel_init(dev);
|
| 1922 |
return 0;
|
| 1923 |
}
|
| 1924 |
|
| 1925 |
#ifdef alloc_netdev
|
| 1926 |
static void ipsec_tunnel_netdev_setup(struct net_device *dev)
|
| 1927 |
{
|
| 1928 |
}
|
| 1929 |
#endif
|
| 1930 |
|
| 1931 |
struct net_device *ipsecdevices[IPSEC_NUM_IFMAX];
|
| 1932 |
int ipsecdevices_max=-1;
|
| 1933 |
|
| 1934 |
int
|
| 1935 |
ipsec_tunnel_createnum(int ifnum)
|
| 1936 |
{
|
| 1937 |
char name[IFNAMSIZ];
|
| 1938 |
struct net_device *dev_ipsec;
|
| 1939 |
int vifentry;
|
| 1940 |
|
| 1941 |
if(ifnum > IPSEC_NUM_IFMAX) {
|
| 1942 |
return -ENOENT;
|
| 1943 |
}
|
| 1944 |
|
| 1945 |
if(ipsecdevices[ifnum]!=NULL) {
|
| 1946 |
return -EEXIST;
|
| 1947 |
}
|
| 1948 |
|
| 1949 |
/* no identical device */
|
| 1950 |
if(ifnum > ipsecdevices_max) {
|
| 1951 |
ipsecdevices_max=ifnum;
|
| 1952 |
}
|
| 1953 |
vifentry = ifnum;
|
| 1954 |
|
| 1955 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1956 |
"klips_debug:ipsec_tunnel_init_devices: "
|
| 1957 |
"creating and registering IPSEC_NUM_IF=%u device\n",
|
| 1958 |
ifnum);
|
| 1959 |
|
| 1960 |
sprintf(name, IPSEC_DEV_FORMAT, ifnum);
|
| 1961 |
#ifdef alloc_netdev
|
| 1962 |
dev_ipsec = alloc_netdev(sizeof(struct ipsecpriv), name, ipsec_tunnel_netdev_setup);
|
| 1963 |
#else
|
| 1964 |
dev_ipsec = (struct net_device*)kmalloc(sizeof(struct net_device), GFP_KERNEL);
|
| 1965 |
#endif
|
| 1966 |
if (dev_ipsec == NULL) {
|
| 1967 |
printk(KERN_ERR "klips_debug:ipsec_tunnel_init_devices: "
|
| 1968 |
"failed to allocate memory for device %s, quitting device init.\n",
|
| 1969 |
name);
|
| 1970 |
return -ENOMEM;
|
| 1971 |
}
|
| 1972 |
#ifndef alloc_netdev
|
| 1973 |
memset((caddr_t)dev_ipsec, 0, sizeof(struct net_device));
|
| 1974 |
#ifdef NETDEV_23
|
| 1975 |
strncpy(dev_ipsec->name, name, sizeof(dev_ipsec->name));
|
| 1976 |
#else /* NETDEV_23 */
|
| 1977 |
dev_ipsec->name = (char*)kmalloc(IFNAMSIZ, GFP_KERNEL);
|
| 1978 |
if (dev_ipsec->name == NULL) {
|
| 1979 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1980 |
"klips_debug:ipsec_tunnel_init_devices: "
|
| 1981 |
"failed to allocate memory for device %s name, quitting device init.\n",
|
| 1982 |
name);
|
| 1983 |
return -ENOMEM;
|
| 1984 |
}
|
| 1985 |
memset((caddr_t)dev_ipsec->name, 0, IFNAMSIZ);
|
| 1986 |
strncpy(dev_ipsec->name, name, IFNAMSIZ);
|
| 1987 |
#endif /* NETDEV_23 */
|
| 1988 |
#ifdef PAUL_FIXME
|
| 1989 |
dev_ipsec->next = NULL;
|
| 1990 |
#endif
|
| 1991 |
#endif /* alloc_netdev */
|
| 1992 |
#ifndef USE_NETDEV_OPS
|
| 1993 |
dev_ipsec->init = &ipsec_tunnel_probe;
|
| 1994 |
#else
|
| 1995 |
dev_ipsec->netdev_ops = &klips_device_ops;
|
| 1996 |
#endif
|
| 1997 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 1998 |
"klips_debug:ipsec_tunnel_init_devices: "
|
| 1999 |
"registering device %s\n",
|
| 2000 |
dev_ipsec->name);
|
| 2001 |
|
| 2002 |
/* reference and hold the device reference */
|
| 2003 |
dev_hold(dev_ipsec);
|
| 2004 |
ipsecdevices[vifentry]=dev_ipsec;
|
| 2005 |
|
| 2006 |
if (register_netdev(dev_ipsec) != 0) {
|
| 2007 |
KLIPS_PRINT(1 || debug_tunnel & DB_TN_INIT,
|
| 2008 |
"klips_debug:ipsec_tunnel_init_devices: "
|
| 2009 |
"registering device %s failed, quitting device init.\n",
|
| 2010 |
dev_ipsec->name);
|
| 2011 |
return -EIO;
|
| 2012 |
} else {
|
| 2013 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 2014 |
"klips_debug:ipsec_tunnel_init_devices: "
|
| 2015 |
"registering device %s succeeded, continuing...\n",
|
| 2016 |
dev_ipsec->name);
|
| 2017 |
}
|
| 2018 |
return 0;
|
| 2019 |
}
|
| 2020 |
|
| 2021 |
|
| 2022 |
int
|
| 2023 |
ipsec_tunnel_init_devices(void)
|
| 2024 |
{
|
| 2025 |
int i;
|
| 2026 |
int error;
|
| 2027 |
|
| 2028 |
KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
|
| 2029 |
"klips_debug:ipsec_tunnel_init_devices: "
|
| 2030 |
"creating and registering IPSEC_NUM_IF=%u devices, allocating %lu per device, IFNAMSIZ=%u.\n",
|
| 2031 |
IPSEC_NUM_IF,
|
| 2032 |
(unsigned long) (sizeof(struct net_device) + IFNAMSIZ),
|
| 2033 |
IFNAMSIZ);
|
| 2034 |
|
| 2035 |
for(i = 0; i < IPSEC_NUM_IF; i++) {
|
| 2036 |
error = ipsec_tunnel_createnum(i);
|
| 2037 |
|
| 2038 |
if(error) break;
|
| 2039 |
}
|
| 2040 |
return 0;
|
| 2041 |
}
|
| 2042 |
|
| 2043 |
int
|
| 2044 |
ipsec_tunnel_deletenum(int vifnum)
|
| 2045 |
{
|
| 2046 |
struct net_device *dev_ipsec;
|
| 2047 |
|
| 2048 |
if(vifnum > IPSEC_NUM_IFMAX) {
|
| 2049 |
return -ENOENT;
|
| 2050 |
}
|
| 2051 |
|
| 2052 |
dev_ipsec = ipsecdevices[vifnum];
|
| 2053 |
if(dev_ipsec == NULL) {
|
| 2054 |
return -ENOENT;
|
| 2055 |
}
|
| 2056 |
|
| 2057 |
/* release reference */
|
| 2058 |
ipsecdevices[vifnum]=NULL;
|
| 2059 |
ipsec_dev_put(dev_ipsec);
|
| 2060 |
|
| 2061 |
KLIPS_PRINT(debug_tunnel, "Unregistering %s (refcnt=%d)\n",
|
| 2062 |
dev_ipsec->name,
|
| 2063 |
atomic_read(&dev_ipsec->refcnt));
|
| 2064 |
unregister_netdev(dev_ipsec);
|
| 2065 |
KLIPS_PRINT(debug_tunnel, "Unregisted %s\n", dev_ipsec->name);
|
| 2066 |
#ifndef NETDEV_23
|
| 2067 |
kfree(dev_ipsec->name);
|
| 2068 |
dev_ipsec->name=NULL;
|
| 2069 |
#endif /* !NETDEV_23 */
|
| 2070 |
#ifndef alloc_netdev
|
| 2071 |
kfree(dev_ipsec->priv);
|
| 2072 |
dev_ipsec->priv=NULL;
|
| 2073 |
#endif /* alloc_netdev */
|
| 2074 |
|
| 2075 |
return 0;
|
| 2076 |
}
|
| 2077 |
|
| 2078 |
|
| 2079 |
struct net_device *
|
| 2080 |
ipsec_tunnel_get_device(int vifnum)
|
| 2081 |
{
|
| 2082 |
struct net_device *nd;
|
| 2083 |
|
| 2084 |
if(vifnum < ipsecdevices_max) {
|
| 2085 |
nd = ipsecdevices[vifnum];
|
| 2086 |
|
| 2087 |
if(nd) dev_hold(nd);
|
| 2088 |
return nd;
|
| 2089 |
} else {
|
| 2090 |
return NULL;
|
| 2091 |
}
|
| 2092 |
}
|
| 2093 |
|
| 2094 |
/* void */
|
| 2095 |
int
|
| 2096 |
ipsec_tunnel_cleanup_devices(void)
|
| 2097 |
{
|
| 2098 |
int error = 0;
|
| 2099 |
int i;
|
| 2100 |
struct net_device *dev_ipsec;
|
| 2101 |
|
| 2102 |
for(i = 0; i < IPSEC_NUM_IF; i++) {
|
| 2103 |
dev_ipsec = ipsecdevices[i];
|
| 2104 |
if(dev_ipsec == NULL) {
|
| 2105 |
continue;
|
| 2106 |
}
|
| 2107 |
|
| 2108 |
/* release reference */
|
| 2109 |
ipsecdevices[i]=NULL;
|
| 2110 |
ipsec_dev_put(dev_ipsec);
|
| 2111 |
|
| 2112 |
KLIPS_PRINT(debug_tunnel, "Unregistering %s (refcnt=%d)\n",
|
| 2113 |
dev_ipsec->name,
|
| 2114 |
atomic_read(&dev_ipsec->refcnt));
|
| 2115 |
unregister_netdev(dev_ipsec);
|
| 2116 |
KLIPS_PRINT(debug_tunnel, "Unregisted %s\n", dev_ipsec->name);
|
| 2117 |
#ifndef NETDEV_23
|
| 2118 |
kfree(dev_ipsec->name);
|
| 2119 |
dev_ipsec->name=NULL;
|
| 2120 |
#endif /* !NETDEV_23 */
|
| 2121 |
#ifndef alloc_netdev
|
| 2122 |
kfree(dev_ipsec->priv);
|
| 2123 |
dev_ipsec->priv=NULL;
|
| 2124 |
#endif /* alloc_netdev */
|
| 2125 |
}
|
| 2126 |
return error;
|
| 2127 |
}
|
| 2128 |
|
| 2129 |
// ------------------------------------------------------------------------
|
| 2130 |
// this handles creating and managing state for xmit path
|
| 2131 |
|
| 2132 |
static spinlock_t ixs_cache_lock = SPIN_LOCK_UNLOCKED;
|
| 2133 |
#ifdef HAVE_KMEM_CACHE_MACRO
|
| 2134 |
static struct kmem_cache *ixs_cache_allocator = NULL;
|
| 2135 |
#else
|
| 2136 |
static kmem_cache_t *ixs_cache_allocator = NULL;
|
| 2137 |
#endif
|
| 2138 |
static unsigned ixs_cache_allocated_count = 0;
|
| 2139 |
|
| 2140 |
#if !defined(MODULE_PARM) && defined(module_param)
|
| 2141 |
/*
|
| 2142 |
* As of 2.6.17 MODULE_PARM no longer exists, use module_param instead.
|
| 2143 |
*/
|
| 2144 |
#define MODULE_PARM(a,b) module_param(a,int,0644)
|
| 2145 |
#endif
|
| 2146 |
|
| 2147 |
int ipsec_ixs_cache_allocated_count_max = 1000;
|
| 2148 |
MODULE_PARM(ipsec_ixs_cache_allocated_count_max, "i");
|
| 2149 |
MODULE_PARM_DESC(ipsec_ixs_cache_allocated_count_max,
|
| 2150 |
"Maximum outstanding transmit packets");
|
| 2151 |
|
| 2152 |
int
|
| 2153 |
ipsec_xmit_state_cache_init (void)
|
| 2154 |
{
|
| 2155 |
if (ixs_cache_allocator)
|
| 2156 |
return -EBUSY;
|
| 2157 |
|
| 2158 |
spin_lock_init(&ixs_cache_lock);
|
| 2159 |
#ifdef HAVE_KMEM_CACHE_MACRO
|
| 2160 |
/* ixs_cache_allocator = KMEM_CACHE(ipsec_ixs,0); */
|
| 2161 |
ixs_cache_allocator = kmem_cache_create ("ipsec_ixs",
|
| 2162 |
sizeof (struct ipsec_xmit_state), 0,
|
| 2163 |
0, NULL);
|
| 2164 |
#else
|
| 2165 |
ixs_cache_allocator = kmem_cache_create ("ipsec_ixs",
|
| 2166 |
sizeof (struct ipsec_xmit_state), 0,
|
| 2167 |
0, NULL, NULL);
|
| 2168 |
#endif
|
| 2169 |
if (! ixs_cache_allocator)
|
| 2170 |
return -ENOMEM;
|
| 2171 |
|
| 2172 |
return 0;
|
| 2173 |
}
|
| 2174 |
|
| 2175 |
void
|
| 2176 |
ipsec_xmit_state_cache_cleanup (void)
|
| 2177 |
{
|
| 2178 |
if (unlikely (ixs_cache_allocated_count))
|
| 2179 |
printk ("ipsec: deleting ipsec_ixs kmem_cache while in use\n");
|
| 2180 |
|
| 2181 |
if (ixs_cache_allocator) {
|
| 2182 |
kmem_cache_destroy (ixs_cache_allocator);
|
| 2183 |
ixs_cache_allocator = NULL;
|
| 2184 |
}
|
| 2185 |
ixs_cache_allocated_count = 0;
|
| 2186 |
}
|
| 2187 |
|
| 2188 |
struct ipsec_xmit_state *
|
| 2189 |
ipsec_xmit_state_new (void)
|
| 2190 |
{
|
| 2191 |
struct ipsec_xmit_state *ixs;
|
| 2192 |
|
| 2193 |
spin_lock_bh (&ixs_cache_lock);
|
| 2194 |
|
| 2195 |
if (ixs_cache_allocated_count >= ipsec_ixs_cache_allocated_count_max) {
|
| 2196 |
spin_unlock_bh (&ixs_cache_lock);
|
| 2197 |
KLIPS_PRINT(debug_tunnel,
|
| 2198 |
"klips_debug:ipsec_xmit_state_new: "
|
| 2199 |
"exceeded maximum outstanding TX packet cnt %d\n",
|
| 2200 |
ixs_cache_allocated_count);
|
| 2201 |
return NULL;
|
| 2202 |
}
|
| 2203 |
|
| 2204 |
ixs = kmem_cache_alloc (ixs_cache_allocator, GFP_ATOMIC);
|
| 2205 |
|
| 2206 |
if (likely (ixs != NULL))
|
| 2207 |
ixs_cache_allocated_count++;
|
| 2208 |
|
| 2209 |
spin_unlock_bh (&ixs_cache_lock);
|
| 2210 |
|
| 2211 |
if (unlikely (NULL == ixs))
|
| 2212 |
goto bail;
|
| 2213 |
|
| 2214 |
// initialize the object
|
| 2215 |
#if 1 /* optimised to only clear the required bits */
|
| 2216 |
memset((caddr_t)ixs, 0, sizeof(*ixs));
|
| 2217 |
#else
|
| 2218 |
ixs->pass = 0;
|
| 2219 |
ixs->state = 0;
|
| 2220 |
ixs->next_state = 0;
|
| 2221 |
ixs->ipsp = NULL;
|
| 2222 |
ixs->sa_len = 0;
|
| 2223 |
ixs->stats = NULL;
|
| 2224 |
ixs->ips.ips_ident_s.data = NULL;
|
| 2225 |
ixs->ips.ips_ident_d.data = NULL;
|
| 2226 |
ixs->outgoing_said.proto = 0;
|
| 2227 |
#ifdef NAT_TRAVERSAL
|
| 2228 |
ixs->natt_type = 0, ixs->natt_head = 0;
|
| 2229 |
ixs->natt_sport = 0, ixs->natt_dport = 0;
|
| 2230 |
#endif
|
| 2231 |
ixs->tot_headroom = 0;
|
| 2232 |
ixs->tot_tailroom = 0;
|
| 2233 |
ixs->eroute = NULL;
|
| 2234 |
ixs->hard_header_stripped = 0;
|
| 2235 |
ixs->hard_header_len = 0;
|
| 2236 |
ixs->cur_mtu = 0; /* FIXME: can we do something better ? */
|
| 2237 |
|
| 2238 |
ixs->oskb = NULL;
|
| 2239 |
ixs->saved_header = NULL; /* saved copy of the hard header */
|
| 2240 |
ixs->route = NULL;
|
| 2241 |
#endif /* memset */
|
| 2242 |
|
| 2243 |
bail:
|
| 2244 |
return ixs;
|
| 2245 |
}
|
| 2246 |
|
| 2247 |
void
|
| 2248 |
ipsec_xmit_state_delete (struct ipsec_xmit_state *ixs)
|
| 2249 |
{
|
| 2250 |
if (unlikely (! ixs))
|
| 2251 |
return;
|
| 2252 |
|
| 2253 |
if (ixs->dev && netif_queue_stopped(ixs->dev))
|
| 2254 |
netif_wake_queue(ixs->dev);
|
| 2255 |
|
| 2256 |
spin_lock_bh (&ixs_cache_lock);
|
| 2257 |
|
| 2258 |
ixs_cache_allocated_count--;
|
| 2259 |
kmem_cache_free (ixs_cache_allocator, ixs);
|
| 2260 |
|
| 2261 |
spin_unlock_bh (&ixs_cache_lock);
|
| 2262 |
}
|
| 2263 |
|
| 2264 |
#ifdef HAVE_NET_DEVICE_OPS
|
| 2265 |
const struct net_device_ops klips_device_ops = {
|
| 2266 |
/* Add our tunnel functions to the device */
|
| 2267 |
.ndo_init = ipsec_tunnel_probe,
|
| 2268 |
.ndo_open = ipsec_tunnel_open,
|
| 2269 |
.ndo_stop = ipsec_tunnel_close,
|
| 2270 |
.ndo_start_xmit = ipsec_tunnel_start_xmit,
|
| 2271 |
.ndo_get_stats = ipsec_tunnel_get_stats,
|
| 2272 |
.ndo_neigh_setup = ipsec_tunnel_neigh_setup_dev,
|
| 2273 |
.ndo_do_ioctl = ipsec_tunnel_ioctl,
|
| 2274 |
|
| 2275 |
#ifdef HAVE_SET_MAC_ADDR
|
| 2276 |
.ndo_set_mac_address = ipsec_tunnel_set_mac_address,
|
| 2277 |
#endif
|
| 2278 |
};
|
| 2279 |
#endif
|
| 2280 |
|
| 2281 |
/*
|
| 2282 |
* We call the attach routine to attach another device.
|
| 2283 |
*/
|
| 2284 |
|
| 2285 |
DEBUG_NO_STATIC int
|
| 2286 |
ipsec_tunnel_attach(struct net_device *dev, struct net_device *physdev)
|
| 2287 |
{
|
| 2288 |
int i;
|
| 2289 |
struct ipsecpriv *prv = netdev_priv(dev);
|
| 2290 |
|
| 2291 |
if(dev == NULL) {
|
| 2292 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 2293 |
"klips_debug:ipsec_tunnel_attach: "
|
| 2294 |
"no device...");
|
| 2295 |
return -ENODEV;
|
| 2296 |
}
|
| 2297 |
|
| 2298 |
if(prv == NULL) {
|
| 2299 |
KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
|
| 2300 |
"klips_debug:ipsec_tunnel_attach: "
|
| 2301 |
"no private space associated with dev=%s",
|
| 2302 |
dev->name ? dev->name : "NULL");
|
| 2303 |
return -ENODATA;
|
| 2304 |
}
|
| 2305 |
|
| 2306 |
#ifdef HAVE_NETDEV_HEADER_OPS
|
| 2307 |
dev->header_ops = &klips_header_ops;
|
| 2308 |
#endif
|
| 2309 |
#ifdef HAVE_NET_DEVICE_OPS
|
| 2310 |
dev->netdev_ops = &klips_device_ops;
|
| 2311 |
#else
|
| 2312 |
# ifdef HAVE_SET_MAC_ADDR
|
| 2313 |
dev->set_mac_address = ipsec_tunnel_set_mac_address;
|
| 2314 |
# endif
|
| 2315 |
#endif /* HAVE_NET_DEVICE_OPS */
|
| 2316 |
prv->dev = physdev;
|
| 2317 |
|
| 2318 |
#ifdef HAVE_NET_DEVICE_OPS
|
| 2319 |
prv->hard_start_xmit = physdev->netdev_ops->ndo_start_xmit;
|
| 2320 |
prv->get_stats = physdev->netdev_ops->ndo_get_stats;
|
| 2321 |
#else
|
| 2322 |
prv->hard_start_xmit = physdev->hard_start_xmit;
|
| 2323 |
prv->get_stats = physdev->get_stats;
|
| 2324 |
#endif
|
| 2325 |
dev->hard_header_len = physdev->hard_header_len;
|
| 2326 |
|
| 2327 |
/* prv->neigh_setup = physdev->neigh_setup; */
|
| 2328 |
dev->mtu = 16260; /* 0xfff0; */ /* dev->mtu; */
|
| 2329 |
prv->mtu = physdev->mtu;
|
| 2330 |
|
| 2331 |
#ifdef PHYSDEV_TYPE
|
| 2332 |
dev->type = physdev->type; /* ARPHRD_TUNNEL; */
|
| 2333 |
#endif /* PHYSDEV_TYPE */
|
| 2334 |
|
| 2335 |
dev->addr_len = physdev->addr_len;
|
| 2336 |
for (i=0; i<dev->addr_len; i++) {
|
| 2337 |
dev->dev_addr[i] = physdev->dev_addr[i];
|
| 2338 |
}
|
| 2339 |
#ifdef CONFIG_KLIPS_DEBUG
|
| 2340 |
if(debug_tunnel & DB_TN_INIT) {
|
| 2341 |
printk(KERN_INFO "klips_debug:ipsec_tunnel_attach: "
|
| 2342 |
"physical device %s being attached has HW address: %2x",
|
| 2343 |
physdev->name, physdev->dev_addr[0]);
|
| 2344 |
for (i=1; i < physdev->addr_len; i++) {
|
| 2345 |
printk(":%02x", physdev->dev_addr[i]);
|
| 2346 |
}
|
| 2347 |
printk("\n");
|
| 2348 |
}
|
| 2349 |
#endif /* CONFIG_KLIPS_DEBUG */
|
| 2350 |
|
| 2351 |
return 0;
|
| 2352 |
}
|
| 2353 |
|
| 2354 |
|
| 2355 |
/*
|
| 2356 |
* Local Variables:
|
| 2357 |
* c-style: linux
|
| 2358 |
* End:
|
| 2359 |
*/
|
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