6 * Kazunori MIYAZAWA @USAGI
7 * Kunihiro Ishiguro <kunihiro@ipinfusion.com>
9 * YOSHIFUJI Hideaki @USAGI
10 * Split up af-specific functions
11 * Derek Atkins <derek@ihtfp.com>
12 * Add UDP Encapsulation
16 #include <linux/workqueue.h>
18 #include <linux/pfkeyv2.h>
19 #include <linux/ipsec.h>
20 #include <linux/module.h>
21 #include <linux/cache.h>
22 #include <linux/audit.h>
23 #include <asm/uaccess.h>
24 #include <linux/ktime.h>
25 #include <linux/slab.h>
26 #include <linux/interrupt.h>
27 #include <linux/kernel.h>
29 #include "xfrm_hash.h"
31 /* Each xfrm_state may be linked to two tables:
33 1. Hash table by (spi,daddr,ah/esp) to find SA by SPI. (input,ctl)
34 2. Hash table by (daddr,family,reqid) to find what SAs exist for given
35 destination/tunnel endpoint. (output)
38 static unsigned int xfrm_state_hashmax __read_mostly
= 1 * 1024 * 1024;
40 static inline unsigned int xfrm_dst_hash(struct net
*net
,
41 const xfrm_address_t
*daddr
,
42 const xfrm_address_t
*saddr
,
44 unsigned short family
)
46 return __xfrm_dst_hash(daddr
, saddr
, reqid
, family
, net
->xfrm
.state_hmask
);
49 static inline unsigned int xfrm_src_hash(struct net
*net
,
50 const xfrm_address_t
*daddr
,
51 const xfrm_address_t
*saddr
,
52 unsigned short family
)
54 return __xfrm_src_hash(daddr
, saddr
, family
, net
->xfrm
.state_hmask
);
57 static inline unsigned int
58 xfrm_spi_hash(struct net
*net
, const xfrm_address_t
*daddr
,
59 __be32 spi
, u8 proto
, unsigned short family
)
61 return __xfrm_spi_hash(daddr
, spi
, proto
, family
, net
->xfrm
.state_hmask
);
64 static void xfrm_hash_transfer(struct hlist_head
*list
,
65 struct hlist_head
*ndsttable
,
66 struct hlist_head
*nsrctable
,
67 struct hlist_head
*nspitable
,
68 unsigned int nhashmask
)
70 struct hlist_node
*tmp
;
73 hlist_for_each_entry_safe(x
, tmp
, list
, bydst
) {
76 h
= __xfrm_dst_hash(&x
->id
.daddr
, &x
->props
.saddr
,
77 x
->props
.reqid
, x
->props
.family
,
79 hlist_add_head(&x
->bydst
, ndsttable
+h
);
81 h
= __xfrm_src_hash(&x
->id
.daddr
, &x
->props
.saddr
,
84 hlist_add_head(&x
->bysrc
, nsrctable
+h
);
87 h
= __xfrm_spi_hash(&x
->id
.daddr
, x
->id
.spi
,
88 x
->id
.proto
, x
->props
.family
,
90 hlist_add_head(&x
->byspi
, nspitable
+h
);
95 static unsigned long xfrm_hash_new_size(unsigned int state_hmask
)
97 return ((state_hmask
+ 1) << 1) * sizeof(struct hlist_head
);
100 static DEFINE_MUTEX(hash_resize_mutex
);
102 static void xfrm_hash_resize(struct work_struct
*work
)
104 struct net
*net
= container_of(work
, struct net
, xfrm
.state_hash_work
);
105 struct hlist_head
*ndst
, *nsrc
, *nspi
, *odst
, *osrc
, *ospi
;
106 unsigned long nsize
, osize
;
107 unsigned int nhashmask
, ohashmask
;
110 mutex_lock(&hash_resize_mutex
);
112 nsize
= xfrm_hash_new_size(net
->xfrm
.state_hmask
);
113 ndst
= xfrm_hash_alloc(nsize
);
116 nsrc
= xfrm_hash_alloc(nsize
);
118 xfrm_hash_free(ndst
, nsize
);
121 nspi
= xfrm_hash_alloc(nsize
);
123 xfrm_hash_free(ndst
, nsize
);
124 xfrm_hash_free(nsrc
, nsize
);
128 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
130 nhashmask
= (nsize
/ sizeof(struct hlist_head
)) - 1U;
131 for (i
= net
->xfrm
.state_hmask
; i
>= 0; i
--)
132 xfrm_hash_transfer(net
->xfrm
.state_bydst
+i
, ndst
, nsrc
, nspi
,
135 odst
= net
->xfrm
.state_bydst
;
136 osrc
= net
->xfrm
.state_bysrc
;
137 ospi
= net
->xfrm
.state_byspi
;
138 ohashmask
= net
->xfrm
.state_hmask
;
140 net
->xfrm
.state_bydst
= ndst
;
141 net
->xfrm
.state_bysrc
= nsrc
;
142 net
->xfrm
.state_byspi
= nspi
;
143 net
->xfrm
.state_hmask
= nhashmask
;
145 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
147 osize
= (ohashmask
+ 1) * sizeof(struct hlist_head
);
148 xfrm_hash_free(odst
, osize
);
149 xfrm_hash_free(osrc
, osize
);
150 xfrm_hash_free(ospi
, osize
);
153 mutex_unlock(&hash_resize_mutex
);
156 static DEFINE_SPINLOCK(xfrm_state_afinfo_lock
);
157 static struct xfrm_state_afinfo __rcu
*xfrm_state_afinfo
[NPROTO
];
159 static DEFINE_SPINLOCK(xfrm_state_gc_lock
);
161 int __xfrm_state_delete(struct xfrm_state
*x
);
163 int km_query(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*pol
);
164 bool km_is_alive(const struct km_event
*c
);
165 void km_state_expired(struct xfrm_state
*x
, int hard
, u32 portid
);
167 static DEFINE_SPINLOCK(xfrm_type_lock
);
168 int xfrm_register_type(const struct xfrm_type
*type
, unsigned short family
)
170 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
171 const struct xfrm_type
**typemap
;
174 if (unlikely(afinfo
== NULL
))
175 return -EAFNOSUPPORT
;
176 typemap
= afinfo
->type_map
;
177 spin_lock_bh(&xfrm_type_lock
);
179 if (likely(typemap
[type
->proto
] == NULL
))
180 typemap
[type
->proto
] = type
;
183 spin_unlock_bh(&xfrm_type_lock
);
184 xfrm_state_put_afinfo(afinfo
);
187 EXPORT_SYMBOL(xfrm_register_type
);
189 int xfrm_unregister_type(const struct xfrm_type
*type
, unsigned short family
)
191 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
192 const struct xfrm_type
**typemap
;
195 if (unlikely(afinfo
== NULL
))
196 return -EAFNOSUPPORT
;
197 typemap
= afinfo
->type_map
;
198 spin_lock_bh(&xfrm_type_lock
);
200 if (unlikely(typemap
[type
->proto
] != type
))
203 typemap
[type
->proto
] = NULL
;
204 spin_unlock_bh(&xfrm_type_lock
);
205 xfrm_state_put_afinfo(afinfo
);
208 EXPORT_SYMBOL(xfrm_unregister_type
);
210 static const struct xfrm_type
*xfrm_get_type(u8 proto
, unsigned short family
)
212 struct xfrm_state_afinfo
*afinfo
;
213 const struct xfrm_type
**typemap
;
214 const struct xfrm_type
*type
;
215 int modload_attempted
= 0;
218 afinfo
= xfrm_state_get_afinfo(family
);
219 if (unlikely(afinfo
== NULL
))
221 typemap
= afinfo
->type_map
;
223 type
= typemap
[proto
];
224 if (unlikely(type
&& !try_module_get(type
->owner
)))
226 if (!type
&& !modload_attempted
) {
227 xfrm_state_put_afinfo(afinfo
);
228 request_module("xfrm-type-%d-%d", family
, proto
);
229 modload_attempted
= 1;
233 xfrm_state_put_afinfo(afinfo
);
237 static void xfrm_put_type(const struct xfrm_type
*type
)
239 module_put(type
->owner
);
242 static DEFINE_SPINLOCK(xfrm_mode_lock
);
243 int xfrm_register_mode(struct xfrm_mode
*mode
, int family
)
245 struct xfrm_state_afinfo
*afinfo
;
246 struct xfrm_mode
**modemap
;
249 if (unlikely(mode
->encap
>= XFRM_MODE_MAX
))
252 afinfo
= xfrm_state_get_afinfo(family
);
253 if (unlikely(afinfo
== NULL
))
254 return -EAFNOSUPPORT
;
257 modemap
= afinfo
->mode_map
;
258 spin_lock_bh(&xfrm_mode_lock
);
259 if (modemap
[mode
->encap
])
263 if (!try_module_get(afinfo
->owner
))
266 mode
->afinfo
= afinfo
;
267 modemap
[mode
->encap
] = mode
;
271 spin_unlock_bh(&xfrm_mode_lock
);
272 xfrm_state_put_afinfo(afinfo
);
275 EXPORT_SYMBOL(xfrm_register_mode
);
277 int xfrm_unregister_mode(struct xfrm_mode
*mode
, int family
)
279 struct xfrm_state_afinfo
*afinfo
;
280 struct xfrm_mode
**modemap
;
283 if (unlikely(mode
->encap
>= XFRM_MODE_MAX
))
286 afinfo
= xfrm_state_get_afinfo(family
);
287 if (unlikely(afinfo
== NULL
))
288 return -EAFNOSUPPORT
;
291 modemap
= afinfo
->mode_map
;
292 spin_lock_bh(&xfrm_mode_lock
);
293 if (likely(modemap
[mode
->encap
] == mode
)) {
294 modemap
[mode
->encap
] = NULL
;
295 module_put(mode
->afinfo
->owner
);
299 spin_unlock_bh(&xfrm_mode_lock
);
300 xfrm_state_put_afinfo(afinfo
);
303 EXPORT_SYMBOL(xfrm_unregister_mode
);
305 static struct xfrm_mode
*xfrm_get_mode(unsigned int encap
, int family
)
307 struct xfrm_state_afinfo
*afinfo
;
308 struct xfrm_mode
*mode
;
309 int modload_attempted
= 0;
311 if (unlikely(encap
>= XFRM_MODE_MAX
))
315 afinfo
= xfrm_state_get_afinfo(family
);
316 if (unlikely(afinfo
== NULL
))
319 mode
= afinfo
->mode_map
[encap
];
320 if (unlikely(mode
&& !try_module_get(mode
->owner
)))
322 if (!mode
&& !modload_attempted
) {
323 xfrm_state_put_afinfo(afinfo
);
324 request_module("xfrm-mode-%d-%d", family
, encap
);
325 modload_attempted
= 1;
329 xfrm_state_put_afinfo(afinfo
);
333 static void xfrm_put_mode(struct xfrm_mode
*mode
)
335 module_put(mode
->owner
);
338 static void xfrm_state_gc_destroy(struct xfrm_state
*x
)
340 tasklet_hrtimer_cancel(&x
->mtimer
);
341 del_timer_sync(&x
->rtimer
);
347 kfree(x
->replay_esn
);
348 kfree(x
->preplay_esn
);
350 xfrm_put_mode(x
->inner_mode
);
351 if (x
->inner_mode_iaf
)
352 xfrm_put_mode(x
->inner_mode_iaf
);
354 xfrm_put_mode(x
->outer_mode
);
356 x
->type
->destructor(x
);
357 xfrm_put_type(x
->type
);
359 security_xfrm_state_free(x
);
363 static void xfrm_state_gc_task(struct work_struct
*work
)
365 struct net
*net
= container_of(work
, struct net
, xfrm
.state_gc_work
);
366 struct xfrm_state
*x
;
367 struct hlist_node
*tmp
;
368 struct hlist_head gc_list
;
370 spin_lock_bh(&xfrm_state_gc_lock
);
371 hlist_move_list(&net
->xfrm
.state_gc_list
, &gc_list
);
372 spin_unlock_bh(&xfrm_state_gc_lock
);
374 hlist_for_each_entry_safe(x
, tmp
, &gc_list
, gclist
)
375 xfrm_state_gc_destroy(x
);
378 static inline unsigned long make_jiffies(long secs
)
380 if (secs
>= (MAX_SCHEDULE_TIMEOUT
-1)/HZ
)
381 return MAX_SCHEDULE_TIMEOUT
-1;
386 static enum hrtimer_restart
xfrm_timer_handler(struct hrtimer
*me
)
388 struct tasklet_hrtimer
*thr
= container_of(me
, struct tasklet_hrtimer
, timer
);
389 struct xfrm_state
*x
= container_of(thr
, struct xfrm_state
, mtimer
);
390 unsigned long now
= get_seconds();
391 long next
= LONG_MAX
;
396 if (x
->km
.state
== XFRM_STATE_DEAD
)
398 if (x
->km
.state
== XFRM_STATE_EXPIRED
)
400 if (x
->lft
.hard_add_expires_seconds
) {
401 long tmo
= x
->lft
.hard_add_expires_seconds
+
402 x
->curlft
.add_time
- now
;
404 if (x
->xflags
& XFRM_SOFT_EXPIRE
) {
405 /* enter hard expire without soft expire first?!
406 * setting a new date could trigger this.
407 * workarbound: fix x->curflt.add_time by below:
409 x
->curlft
.add_time
= now
- x
->saved_tmo
- 1;
410 tmo
= x
->lft
.hard_add_expires_seconds
- x
->saved_tmo
;
417 if (x
->lft
.hard_use_expires_seconds
) {
418 long tmo
= x
->lft
.hard_use_expires_seconds
+
419 (x
->curlft
.use_time
? : now
) - now
;
427 if (x
->lft
.soft_add_expires_seconds
) {
428 long tmo
= x
->lft
.soft_add_expires_seconds
+
429 x
->curlft
.add_time
- now
;
432 x
->xflags
&= ~XFRM_SOFT_EXPIRE
;
433 } else if (tmo
< next
) {
435 x
->xflags
|= XFRM_SOFT_EXPIRE
;
439 if (x
->lft
.soft_use_expires_seconds
) {
440 long tmo
= x
->lft
.soft_use_expires_seconds
+
441 (x
->curlft
.use_time
? : now
) - now
;
450 km_state_expired(x
, 0, 0);
452 if (next
!= LONG_MAX
) {
453 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(next
, 0), HRTIMER_MODE_REL
);
459 if (x
->km
.state
== XFRM_STATE_ACQ
&& x
->id
.spi
== 0)
460 x
->km
.state
= XFRM_STATE_EXPIRED
;
462 err
= __xfrm_state_delete(x
);
464 km_state_expired(x
, 1, 0);
466 xfrm_audit_state_delete(x
, err
? 0 : 1, true);
469 spin_unlock(&x
->lock
);
470 return HRTIMER_NORESTART
;
473 static void xfrm_replay_timer_handler(unsigned long data
);
475 struct xfrm_state
*xfrm_state_alloc(struct net
*net
)
477 struct xfrm_state
*x
;
479 x
= kzalloc(sizeof(struct xfrm_state
), GFP_ATOMIC
);
482 write_pnet(&x
->xs_net
, net
);
483 atomic_set(&x
->refcnt
, 1);
484 atomic_set(&x
->tunnel_users
, 0);
485 INIT_LIST_HEAD(&x
->km
.all
);
486 INIT_HLIST_NODE(&x
->bydst
);
487 INIT_HLIST_NODE(&x
->bysrc
);
488 INIT_HLIST_NODE(&x
->byspi
);
489 tasklet_hrtimer_init(&x
->mtimer
, xfrm_timer_handler
,
490 CLOCK_BOOTTIME
, HRTIMER_MODE_ABS
);
491 setup_timer(&x
->rtimer
, xfrm_replay_timer_handler
,
493 x
->curlft
.add_time
= get_seconds();
494 x
->lft
.soft_byte_limit
= XFRM_INF
;
495 x
->lft
.soft_packet_limit
= XFRM_INF
;
496 x
->lft
.hard_byte_limit
= XFRM_INF
;
497 x
->lft
.hard_packet_limit
= XFRM_INF
;
498 x
->replay_maxage
= 0;
499 x
->replay_maxdiff
= 0;
500 x
->inner_mode
= NULL
;
501 x
->inner_mode_iaf
= NULL
;
502 spin_lock_init(&x
->lock
);
506 EXPORT_SYMBOL(xfrm_state_alloc
);
508 void __xfrm_state_destroy(struct xfrm_state
*x
)
510 struct net
*net
= xs_net(x
);
512 WARN_ON(x
->km
.state
!= XFRM_STATE_DEAD
);
514 spin_lock_bh(&xfrm_state_gc_lock
);
515 hlist_add_head(&x
->gclist
, &net
->xfrm
.state_gc_list
);
516 spin_unlock_bh(&xfrm_state_gc_lock
);
517 schedule_work(&net
->xfrm
.state_gc_work
);
519 EXPORT_SYMBOL(__xfrm_state_destroy
);
521 int __xfrm_state_delete(struct xfrm_state
*x
)
523 struct net
*net
= xs_net(x
);
526 if (x
->km
.state
!= XFRM_STATE_DEAD
) {
527 x
->km
.state
= XFRM_STATE_DEAD
;
528 spin_lock(&net
->xfrm
.xfrm_state_lock
);
529 list_del(&x
->km
.all
);
530 hlist_del(&x
->bydst
);
531 hlist_del(&x
->bysrc
);
533 hlist_del(&x
->byspi
);
534 net
->xfrm
.state_num
--;
535 spin_unlock(&net
->xfrm
.xfrm_state_lock
);
537 /* All xfrm_state objects are created by xfrm_state_alloc.
538 * The xfrm_state_alloc call gives a reference, and that
539 * is what we are dropping here.
547 EXPORT_SYMBOL(__xfrm_state_delete
);
549 int xfrm_state_delete(struct xfrm_state
*x
)
553 spin_lock_bh(&x
->lock
);
554 err
= __xfrm_state_delete(x
);
555 spin_unlock_bh(&x
->lock
);
559 EXPORT_SYMBOL(xfrm_state_delete
);
561 #ifdef CONFIG_SECURITY_NETWORK_XFRM
563 xfrm_state_flush_secctx_check(struct net
*net
, u8 proto
, bool task_valid
)
567 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
568 struct xfrm_state
*x
;
570 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+i
, bydst
) {
571 if (xfrm_id_proto_match(x
->id
.proto
, proto
) &&
572 (err
= security_xfrm_state_delete(x
)) != 0) {
573 xfrm_audit_state_delete(x
, 0, task_valid
);
583 xfrm_state_flush_secctx_check(struct net
*net
, u8 proto
, bool task_valid
)
589 int xfrm_state_flush(struct net
*net
, u8 proto
, bool task_valid
)
591 int i
, err
= 0, cnt
= 0;
593 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
594 err
= xfrm_state_flush_secctx_check(net
, proto
, task_valid
);
599 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
600 struct xfrm_state
*x
;
602 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+i
, bydst
) {
603 if (!xfrm_state_kern(x
) &&
604 xfrm_id_proto_match(x
->id
.proto
, proto
)) {
606 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
608 err
= xfrm_state_delete(x
);
609 xfrm_audit_state_delete(x
, err
? 0 : 1,
615 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
624 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
627 EXPORT_SYMBOL(xfrm_state_flush
);
629 void xfrm_sad_getinfo(struct net
*net
, struct xfrmk_sadinfo
*si
)
631 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
632 si
->sadcnt
= net
->xfrm
.state_num
;
633 si
->sadhcnt
= net
->xfrm
.state_hmask
;
634 si
->sadhmcnt
= xfrm_state_hashmax
;
635 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
637 EXPORT_SYMBOL(xfrm_sad_getinfo
);
640 xfrm_init_tempstate(struct xfrm_state
*x
, const struct flowi
*fl
,
641 const struct xfrm_tmpl
*tmpl
,
642 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
643 unsigned short family
)
645 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
648 afinfo
->init_tempsel(&x
->sel
, fl
);
650 if (family
!= tmpl
->encap_family
) {
651 xfrm_state_put_afinfo(afinfo
);
652 afinfo
= xfrm_state_get_afinfo(tmpl
->encap_family
);
656 afinfo
->init_temprop(x
, tmpl
, daddr
, saddr
);
657 xfrm_state_put_afinfo(afinfo
);
661 static struct xfrm_state
*__xfrm_state_lookup(struct net
*net
, u32 mark
,
662 const xfrm_address_t
*daddr
,
663 __be32 spi
, u8 proto
,
664 unsigned short family
)
666 unsigned int h
= xfrm_spi_hash(net
, daddr
, spi
, proto
, family
);
667 struct xfrm_state
*x
;
669 hlist_for_each_entry(x
, net
->xfrm
.state_byspi
+h
, byspi
) {
670 if (x
->props
.family
!= family
||
672 x
->id
.proto
!= proto
||
673 !xfrm_addr_equal(&x
->id
.daddr
, daddr
, family
))
676 if ((mark
& x
->mark
.m
) != x
->mark
.v
)
685 static struct xfrm_state
*__xfrm_state_lookup_byaddr(struct net
*net
, u32 mark
,
686 const xfrm_address_t
*daddr
,
687 const xfrm_address_t
*saddr
,
688 u8 proto
, unsigned short family
)
690 unsigned int h
= xfrm_src_hash(net
, daddr
, saddr
, family
);
691 struct xfrm_state
*x
;
693 hlist_for_each_entry(x
, net
->xfrm
.state_bysrc
+h
, bysrc
) {
694 if (x
->props
.family
!= family
||
695 x
->id
.proto
!= proto
||
696 !xfrm_addr_equal(&x
->id
.daddr
, daddr
, family
) ||
697 !xfrm_addr_equal(&x
->props
.saddr
, saddr
, family
))
700 if ((mark
& x
->mark
.m
) != x
->mark
.v
)
709 static inline struct xfrm_state
*
710 __xfrm_state_locate(struct xfrm_state
*x
, int use_spi
, int family
)
712 struct net
*net
= xs_net(x
);
713 u32 mark
= x
->mark
.v
& x
->mark
.m
;
716 return __xfrm_state_lookup(net
, mark
, &x
->id
.daddr
,
717 x
->id
.spi
, x
->id
.proto
, family
);
719 return __xfrm_state_lookup_byaddr(net
, mark
,
722 x
->id
.proto
, family
);
725 static void xfrm_hash_grow_check(struct net
*net
, int have_hash_collision
)
727 if (have_hash_collision
&&
728 (net
->xfrm
.state_hmask
+ 1) < xfrm_state_hashmax
&&
729 net
->xfrm
.state_num
> net
->xfrm
.state_hmask
)
730 schedule_work(&net
->xfrm
.state_hash_work
);
733 static void xfrm_state_look_at(struct xfrm_policy
*pol
, struct xfrm_state
*x
,
734 const struct flowi
*fl
, unsigned short family
,
735 struct xfrm_state
**best
, int *acq_in_progress
,
739 * 1. There is a valid state with matching selector. Done.
740 * 2. Valid state with inappropriate selector. Skip.
742 * Entering area of "sysdeps".
744 * 3. If state is not valid, selector is temporary, it selects
745 * only session which triggered previous resolution. Key
746 * manager will do something to install a state with proper
749 if (x
->km
.state
== XFRM_STATE_VALID
) {
750 if ((x
->sel
.family
&&
751 !xfrm_selector_match(&x
->sel
, fl
, x
->sel
.family
)) ||
752 !security_xfrm_state_pol_flow_match(x
, pol
, fl
))
756 (*best
)->km
.dying
> x
->km
.dying
||
757 ((*best
)->km
.dying
== x
->km
.dying
&&
758 (*best
)->curlft
.add_time
< x
->curlft
.add_time
))
760 } else if (x
->km
.state
== XFRM_STATE_ACQ
) {
761 *acq_in_progress
= 1;
762 } else if (x
->km
.state
== XFRM_STATE_ERROR
||
763 x
->km
.state
== XFRM_STATE_EXPIRED
) {
764 if (xfrm_selector_match(&x
->sel
, fl
, x
->sel
.family
) &&
765 security_xfrm_state_pol_flow_match(x
, pol
, fl
))
771 xfrm_state_find(const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
772 const struct flowi
*fl
, struct xfrm_tmpl
*tmpl
,
773 struct xfrm_policy
*pol
, int *err
,
774 unsigned short family
)
776 static xfrm_address_t saddr_wildcard
= { };
777 struct net
*net
= xp_net(pol
);
778 unsigned int h
, h_wildcard
;
779 struct xfrm_state
*x
, *x0
, *to_put
;
780 int acquire_in_progress
= 0;
782 struct xfrm_state
*best
= NULL
;
783 u32 mark
= pol
->mark
.v
& pol
->mark
.m
;
784 unsigned short encap_family
= tmpl
->encap_family
;
789 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
790 h
= xfrm_dst_hash(net
, daddr
, saddr
, tmpl
->reqid
, encap_family
);
791 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+h
, bydst
) {
792 if (x
->props
.family
== encap_family
&&
793 x
->props
.reqid
== tmpl
->reqid
&&
794 (mark
& x
->mark
.m
) == x
->mark
.v
&&
795 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
796 xfrm_state_addr_check(x
, daddr
, saddr
, encap_family
) &&
797 tmpl
->mode
== x
->props
.mode
&&
798 tmpl
->id
.proto
== x
->id
.proto
&&
799 (tmpl
->id
.spi
== x
->id
.spi
|| !tmpl
->id
.spi
))
800 xfrm_state_look_at(pol
, x
, fl
, encap_family
,
801 &best
, &acquire_in_progress
, &error
);
803 if (best
|| acquire_in_progress
)
806 h_wildcard
= xfrm_dst_hash(net
, daddr
, &saddr_wildcard
, tmpl
->reqid
, encap_family
);
807 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+h_wildcard
, bydst
) {
808 if (x
->props
.family
== encap_family
&&
809 x
->props
.reqid
== tmpl
->reqid
&&
810 (mark
& x
->mark
.m
) == x
->mark
.v
&&
811 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
812 xfrm_addr_equal(&x
->id
.daddr
, daddr
, encap_family
) &&
813 tmpl
->mode
== x
->props
.mode
&&
814 tmpl
->id
.proto
== x
->id
.proto
&&
815 (tmpl
->id
.spi
== x
->id
.spi
|| !tmpl
->id
.spi
))
816 xfrm_state_look_at(pol
, x
, fl
, encap_family
,
817 &best
, &acquire_in_progress
, &error
);
822 if (!x
&& !error
&& !acquire_in_progress
) {
824 (x0
= __xfrm_state_lookup(net
, mark
, daddr
, tmpl
->id
.spi
,
825 tmpl
->id
.proto
, encap_family
)) != NULL
) {
832 /* If the KMs have no listeners (yet...), avoid allocating an SA
833 * for each and every packet - garbage collection might not
836 if (!km_is_alive(&c
)) {
841 x
= xfrm_state_alloc(net
);
846 /* Initialize temporary state matching only
847 * to current session. */
848 xfrm_init_tempstate(x
, fl
, tmpl
, daddr
, saddr
, family
);
849 memcpy(&x
->mark
, &pol
->mark
, sizeof(x
->mark
));
851 error
= security_xfrm_state_alloc_acquire(x
, pol
->security
, fl
->flowi_secid
);
853 x
->km
.state
= XFRM_STATE_DEAD
;
859 if (km_query(x
, tmpl
, pol
) == 0) {
860 x
->km
.state
= XFRM_STATE_ACQ
;
861 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
862 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
863 h
= xfrm_src_hash(net
, daddr
, saddr
, encap_family
);
864 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
866 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
, encap_family
);
867 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
869 x
->lft
.hard_add_expires_seconds
= net
->xfrm
.sysctl_acq_expires
;
870 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(net
->xfrm
.sysctl_acq_expires
, 0), HRTIMER_MODE_REL
);
871 net
->xfrm
.state_num
++;
872 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
874 x
->km
.state
= XFRM_STATE_DEAD
;
884 *err
= acquire_in_progress
? -EAGAIN
: error
;
885 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
887 xfrm_state_put(to_put
);
892 xfrm_stateonly_find(struct net
*net
, u32 mark
,
893 xfrm_address_t
*daddr
, xfrm_address_t
*saddr
,
894 unsigned short family
, u8 mode
, u8 proto
, u32 reqid
)
897 struct xfrm_state
*rx
= NULL
, *x
= NULL
;
899 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
900 h
= xfrm_dst_hash(net
, daddr
, saddr
, reqid
, family
);
901 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+h
, bydst
) {
902 if (x
->props
.family
== family
&&
903 x
->props
.reqid
== reqid
&&
904 (mark
& x
->mark
.m
) == x
->mark
.v
&&
905 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
906 xfrm_state_addr_check(x
, daddr
, saddr
, family
) &&
907 mode
== x
->props
.mode
&&
908 proto
== x
->id
.proto
&&
909 x
->km
.state
== XFRM_STATE_VALID
) {
917 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
922 EXPORT_SYMBOL(xfrm_stateonly_find
);
924 struct xfrm_state
*xfrm_state_lookup_byspi(struct net
*net
, __be32 spi
,
925 unsigned short family
)
927 struct xfrm_state
*x
;
928 struct xfrm_state_walk
*w
;
930 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
931 list_for_each_entry(w
, &net
->xfrm
.state_all
, all
) {
932 x
= container_of(w
, struct xfrm_state
, km
);
933 if (x
->props
.family
!= family
||
937 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
941 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
944 EXPORT_SYMBOL(xfrm_state_lookup_byspi
);
946 static void __xfrm_state_insert(struct xfrm_state
*x
)
948 struct net
*net
= xs_net(x
);
951 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
953 h
= xfrm_dst_hash(net
, &x
->id
.daddr
, &x
->props
.saddr
,
954 x
->props
.reqid
, x
->props
.family
);
955 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
957 h
= xfrm_src_hash(net
, &x
->id
.daddr
, &x
->props
.saddr
, x
->props
.family
);
958 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
961 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
,
964 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
967 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(1, 0), HRTIMER_MODE_REL
);
968 if (x
->replay_maxage
)
969 mod_timer(&x
->rtimer
, jiffies
+ x
->replay_maxage
);
971 net
->xfrm
.state_num
++;
973 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
976 /* net->xfrm.xfrm_state_lock is held */
977 static void __xfrm_state_bump_genids(struct xfrm_state
*xnew
)
979 struct net
*net
= xs_net(xnew
);
980 unsigned short family
= xnew
->props
.family
;
981 u32 reqid
= xnew
->props
.reqid
;
982 struct xfrm_state
*x
;
984 u32 mark
= xnew
->mark
.v
& xnew
->mark
.m
;
986 h
= xfrm_dst_hash(net
, &xnew
->id
.daddr
, &xnew
->props
.saddr
, reqid
, family
);
987 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+h
, bydst
) {
988 if (x
->props
.family
== family
&&
989 x
->props
.reqid
== reqid
&&
990 (mark
& x
->mark
.m
) == x
->mark
.v
&&
991 xfrm_addr_equal(&x
->id
.daddr
, &xnew
->id
.daddr
, family
) &&
992 xfrm_addr_equal(&x
->props
.saddr
, &xnew
->props
.saddr
, family
))
997 void xfrm_state_insert(struct xfrm_state
*x
)
999 struct net
*net
= xs_net(x
);
1001 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1002 __xfrm_state_bump_genids(x
);
1003 __xfrm_state_insert(x
);
1004 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1006 EXPORT_SYMBOL(xfrm_state_insert
);
1008 /* net->xfrm.xfrm_state_lock is held */
1009 static struct xfrm_state
*__find_acq_core(struct net
*net
,
1010 const struct xfrm_mark
*m
,
1011 unsigned short family
, u8 mode
,
1012 u32 reqid
, u8 proto
,
1013 const xfrm_address_t
*daddr
,
1014 const xfrm_address_t
*saddr
,
1017 unsigned int h
= xfrm_dst_hash(net
, daddr
, saddr
, reqid
, family
);
1018 struct xfrm_state
*x
;
1019 u32 mark
= m
->v
& m
->m
;
1021 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+h
, bydst
) {
1022 if (x
->props
.reqid
!= reqid
||
1023 x
->props
.mode
!= mode
||
1024 x
->props
.family
!= family
||
1025 x
->km
.state
!= XFRM_STATE_ACQ
||
1027 x
->id
.proto
!= proto
||
1028 (mark
& x
->mark
.m
) != x
->mark
.v
||
1029 !xfrm_addr_equal(&x
->id
.daddr
, daddr
, family
) ||
1030 !xfrm_addr_equal(&x
->props
.saddr
, saddr
, family
))
1040 x
= xfrm_state_alloc(net
);
1044 x
->sel
.daddr
.a4
= daddr
->a4
;
1045 x
->sel
.saddr
.a4
= saddr
->a4
;
1046 x
->sel
.prefixlen_d
= 32;
1047 x
->sel
.prefixlen_s
= 32;
1048 x
->props
.saddr
.a4
= saddr
->a4
;
1049 x
->id
.daddr
.a4
= daddr
->a4
;
1053 *(struct in6_addr
*)x
->sel
.daddr
.a6
= *(struct in6_addr
*)daddr
;
1054 *(struct in6_addr
*)x
->sel
.saddr
.a6
= *(struct in6_addr
*)saddr
;
1055 x
->sel
.prefixlen_d
= 128;
1056 x
->sel
.prefixlen_s
= 128;
1057 *(struct in6_addr
*)x
->props
.saddr
.a6
= *(struct in6_addr
*)saddr
;
1058 *(struct in6_addr
*)x
->id
.daddr
.a6
= *(struct in6_addr
*)daddr
;
1062 x
->km
.state
= XFRM_STATE_ACQ
;
1063 x
->id
.proto
= proto
;
1064 x
->props
.family
= family
;
1065 x
->props
.mode
= mode
;
1066 x
->props
.reqid
= reqid
;
1069 x
->lft
.hard_add_expires_seconds
= net
->xfrm
.sysctl_acq_expires
;
1071 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(net
->xfrm
.sysctl_acq_expires
, 0), HRTIMER_MODE_REL
);
1072 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
1073 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
1074 h
= xfrm_src_hash(net
, daddr
, saddr
, family
);
1075 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
1077 net
->xfrm
.state_num
++;
1079 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
1085 static struct xfrm_state
*__xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
);
1087 int xfrm_state_add(struct xfrm_state
*x
)
1089 struct net
*net
= xs_net(x
);
1090 struct xfrm_state
*x1
, *to_put
;
1093 u32 mark
= x
->mark
.v
& x
->mark
.m
;
1094 int use_spi
= xfrm_id_proto_match(x
->id
.proto
, IPSEC_PROTO_ANY
);
1096 family
= x
->props
.family
;
1100 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1102 x1
= __xfrm_state_locate(x
, use_spi
, family
);
1110 if (use_spi
&& x
->km
.seq
) {
1111 x1
= __xfrm_find_acq_byseq(net
, mark
, x
->km
.seq
);
1112 if (x1
&& ((x1
->id
.proto
!= x
->id
.proto
) ||
1113 !xfrm_addr_equal(&x1
->id
.daddr
, &x
->id
.daddr
, family
))) {
1120 x1
= __find_acq_core(net
, &x
->mark
, family
, x
->props
.mode
,
1121 x
->props
.reqid
, x
->id
.proto
,
1122 &x
->id
.daddr
, &x
->props
.saddr
, 0);
1124 __xfrm_state_bump_genids(x
);
1125 __xfrm_state_insert(x
);
1129 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1132 xfrm_state_delete(x1
);
1137 xfrm_state_put(to_put
);
1141 EXPORT_SYMBOL(xfrm_state_add
);
1143 #ifdef CONFIG_XFRM_MIGRATE
1144 static struct xfrm_state
*xfrm_state_clone(struct xfrm_state
*orig
)
1146 struct net
*net
= xs_net(orig
);
1147 struct xfrm_state
*x
= xfrm_state_alloc(net
);
1151 memcpy(&x
->id
, &orig
->id
, sizeof(x
->id
));
1152 memcpy(&x
->sel
, &orig
->sel
, sizeof(x
->sel
));
1153 memcpy(&x
->lft
, &orig
->lft
, sizeof(x
->lft
));
1154 x
->props
.mode
= orig
->props
.mode
;
1155 x
->props
.replay_window
= orig
->props
.replay_window
;
1156 x
->props
.reqid
= orig
->props
.reqid
;
1157 x
->props
.family
= orig
->props
.family
;
1158 x
->props
.saddr
= orig
->props
.saddr
;
1161 x
->aalg
= xfrm_algo_auth_clone(orig
->aalg
);
1165 x
->props
.aalgo
= orig
->props
.aalgo
;
1168 x
->aead
= xfrm_algo_aead_clone(orig
->aead
);
1173 x
->ealg
= xfrm_algo_clone(orig
->ealg
);
1177 x
->props
.ealgo
= orig
->props
.ealgo
;
1180 x
->calg
= xfrm_algo_clone(orig
->calg
);
1184 x
->props
.calgo
= orig
->props
.calgo
;
1187 x
->encap
= kmemdup(orig
->encap
, sizeof(*x
->encap
), GFP_KERNEL
);
1193 x
->coaddr
= kmemdup(orig
->coaddr
, sizeof(*x
->coaddr
),
1199 if (orig
->replay_esn
) {
1200 if (xfrm_replay_clone(x
, orig
))
1204 memcpy(&x
->mark
, &orig
->mark
, sizeof(x
->mark
));
1206 if (xfrm_init_state(x
) < 0)
1209 x
->props
.flags
= orig
->props
.flags
;
1210 x
->props
.extra_flags
= orig
->props
.extra_flags
;
1212 x
->tfcpad
= orig
->tfcpad
;
1213 x
->replay_maxdiff
= orig
->replay_maxdiff
;
1214 x
->replay_maxage
= orig
->replay_maxage
;
1215 x
->curlft
.add_time
= orig
->curlft
.add_time
;
1216 x
->km
.state
= orig
->km
.state
;
1217 x
->km
.seq
= orig
->km
.seq
;
1227 struct xfrm_state
*xfrm_migrate_state_find(struct xfrm_migrate
*m
, struct net
*net
)
1230 struct xfrm_state
*x
= NULL
;
1232 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1235 h
= xfrm_dst_hash(net
, &m
->old_daddr
, &m
->old_saddr
,
1236 m
->reqid
, m
->old_family
);
1237 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+h
, bydst
) {
1238 if (x
->props
.mode
!= m
->mode
||
1239 x
->id
.proto
!= m
->proto
)
1241 if (m
->reqid
&& x
->props
.reqid
!= m
->reqid
)
1243 if (!xfrm_addr_equal(&x
->id
.daddr
, &m
->old_daddr
,
1245 !xfrm_addr_equal(&x
->props
.saddr
, &m
->old_saddr
,
1252 h
= xfrm_src_hash(net
, &m
->old_daddr
, &m
->old_saddr
,
1254 hlist_for_each_entry(x
, net
->xfrm
.state_bysrc
+h
, bysrc
) {
1255 if (x
->props
.mode
!= m
->mode
||
1256 x
->id
.proto
!= m
->proto
)
1258 if (!xfrm_addr_equal(&x
->id
.daddr
, &m
->old_daddr
,
1260 !xfrm_addr_equal(&x
->props
.saddr
, &m
->old_saddr
,
1268 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1272 EXPORT_SYMBOL(xfrm_migrate_state_find
);
1274 struct xfrm_state
*xfrm_state_migrate(struct xfrm_state
*x
,
1275 struct xfrm_migrate
*m
)
1277 struct xfrm_state
*xc
;
1279 xc
= xfrm_state_clone(x
);
1283 memcpy(&xc
->id
.daddr
, &m
->new_daddr
, sizeof(xc
->id
.daddr
));
1284 memcpy(&xc
->props
.saddr
, &m
->new_saddr
, sizeof(xc
->props
.saddr
));
1287 if (xfrm_addr_equal(&x
->id
.daddr
, &m
->new_daddr
, m
->new_family
)) {
1288 /* a care is needed when the destination address of the
1289 state is to be updated as it is a part of triplet */
1290 xfrm_state_insert(xc
);
1292 if (xfrm_state_add(xc
) < 0)
1301 EXPORT_SYMBOL(xfrm_state_migrate
);
1304 int xfrm_state_update(struct xfrm_state
*x
)
1306 struct xfrm_state
*x1
, *to_put
;
1308 int use_spi
= xfrm_id_proto_match(x
->id
.proto
, IPSEC_PROTO_ANY
);
1309 struct net
*net
= xs_net(x
);
1313 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1314 x1
= __xfrm_state_locate(x
, use_spi
, x
->props
.family
);
1320 if (xfrm_state_kern(x1
)) {
1326 if (x1
->km
.state
== XFRM_STATE_ACQ
) {
1327 __xfrm_state_insert(x
);
1333 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1336 xfrm_state_put(to_put
);
1342 xfrm_state_delete(x1
);
1348 spin_lock_bh(&x1
->lock
);
1349 if (likely(x1
->km
.state
== XFRM_STATE_VALID
)) {
1350 if (x
->encap
&& x1
->encap
)
1351 memcpy(x1
->encap
, x
->encap
, sizeof(*x1
->encap
));
1352 if (x
->coaddr
&& x1
->coaddr
) {
1353 memcpy(x1
->coaddr
, x
->coaddr
, sizeof(*x1
->coaddr
));
1355 if (!use_spi
&& memcmp(&x1
->sel
, &x
->sel
, sizeof(x1
->sel
)))
1356 memcpy(&x1
->sel
, &x
->sel
, sizeof(x1
->sel
));
1357 memcpy(&x1
->lft
, &x
->lft
, sizeof(x1
->lft
));
1360 tasklet_hrtimer_start(&x1
->mtimer
, ktime_set(1, 0), HRTIMER_MODE_REL
);
1361 if (x1
->curlft
.use_time
)
1362 xfrm_state_check_expire(x1
);
1365 x
->km
.state
= XFRM_STATE_DEAD
;
1366 __xfrm_state_put(x
);
1368 spin_unlock_bh(&x1
->lock
);
1374 EXPORT_SYMBOL(xfrm_state_update
);
1376 int xfrm_state_check_expire(struct xfrm_state
*x
)
1378 if (!x
->curlft
.use_time
)
1379 x
->curlft
.use_time
= get_seconds();
1381 if (x
->curlft
.bytes
>= x
->lft
.hard_byte_limit
||
1382 x
->curlft
.packets
>= x
->lft
.hard_packet_limit
) {
1383 x
->km
.state
= XFRM_STATE_EXPIRED
;
1384 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(0, 0), HRTIMER_MODE_REL
);
1389 (x
->curlft
.bytes
>= x
->lft
.soft_byte_limit
||
1390 x
->curlft
.packets
>= x
->lft
.soft_packet_limit
)) {
1392 km_state_expired(x
, 0, 0);
1396 EXPORT_SYMBOL(xfrm_state_check_expire
);
1399 xfrm_state_lookup(struct net
*net
, u32 mark
, const xfrm_address_t
*daddr
, __be32 spi
,
1400 u8 proto
, unsigned short family
)
1402 struct xfrm_state
*x
;
1404 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1405 x
= __xfrm_state_lookup(net
, mark
, daddr
, spi
, proto
, family
);
1406 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1409 EXPORT_SYMBOL(xfrm_state_lookup
);
1412 xfrm_state_lookup_byaddr(struct net
*net
, u32 mark
,
1413 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
1414 u8 proto
, unsigned short family
)
1416 struct xfrm_state
*x
;
1418 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1419 x
= __xfrm_state_lookup_byaddr(net
, mark
, daddr
, saddr
, proto
, family
);
1420 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1423 EXPORT_SYMBOL(xfrm_state_lookup_byaddr
);
1426 xfrm_find_acq(struct net
*net
, const struct xfrm_mark
*mark
, u8 mode
, u32 reqid
,
1427 u8 proto
, const xfrm_address_t
*daddr
,
1428 const xfrm_address_t
*saddr
, int create
, unsigned short family
)
1430 struct xfrm_state
*x
;
1432 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1433 x
= __find_acq_core(net
, mark
, family
, mode
, reqid
, proto
, daddr
, saddr
, create
);
1434 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1438 EXPORT_SYMBOL(xfrm_find_acq
);
1440 #ifdef CONFIG_XFRM_SUB_POLICY
1442 xfrm_tmpl_sort(struct xfrm_tmpl
**dst
, struct xfrm_tmpl
**src
, int n
,
1443 unsigned short family
, struct net
*net
)
1446 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
1448 return -EAFNOSUPPORT
;
1450 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
); /*FIXME*/
1451 if (afinfo
->tmpl_sort
)
1452 err
= afinfo
->tmpl_sort(dst
, src
, n
);
1453 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1454 xfrm_state_put_afinfo(afinfo
);
1457 EXPORT_SYMBOL(xfrm_tmpl_sort
);
1460 xfrm_state_sort(struct xfrm_state
**dst
, struct xfrm_state
**src
, int n
,
1461 unsigned short family
)
1464 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
1465 struct net
*net
= xs_net(*src
);
1468 return -EAFNOSUPPORT
;
1470 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1471 if (afinfo
->state_sort
)
1472 err
= afinfo
->state_sort(dst
, src
, n
);
1473 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1474 xfrm_state_put_afinfo(afinfo
);
1477 EXPORT_SYMBOL(xfrm_state_sort
);
1480 /* Silly enough, but I'm lazy to build resolution list */
1482 static struct xfrm_state
*__xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
)
1486 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
1487 struct xfrm_state
*x
;
1489 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+i
, bydst
) {
1490 if (x
->km
.seq
== seq
&&
1491 (mark
& x
->mark
.m
) == x
->mark
.v
&&
1492 x
->km
.state
== XFRM_STATE_ACQ
) {
1501 struct xfrm_state
*xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
)
1503 struct xfrm_state
*x
;
1505 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1506 x
= __xfrm_find_acq_byseq(net
, mark
, seq
);
1507 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1510 EXPORT_SYMBOL(xfrm_find_acq_byseq
);
1512 u32
xfrm_get_acqseq(void)
1515 static atomic_t acqseq
;
1518 res
= atomic_inc_return(&acqseq
);
1523 EXPORT_SYMBOL(xfrm_get_acqseq
);
1525 int verify_spi_info(u8 proto
, u32 min
, u32 max
)
1533 /* IPCOMP spi is 16-bits. */
1547 EXPORT_SYMBOL(verify_spi_info
);
1549 int xfrm_alloc_spi(struct xfrm_state
*x
, u32 low
, u32 high
)
1551 struct net
*net
= xs_net(x
);
1553 struct xfrm_state
*x0
;
1555 __be32 minspi
= htonl(low
);
1556 __be32 maxspi
= htonl(high
);
1557 u32 mark
= x
->mark
.v
& x
->mark
.m
;
1559 spin_lock_bh(&x
->lock
);
1560 if (x
->km
.state
== XFRM_STATE_DEAD
)
1569 if (minspi
== maxspi
) {
1570 x0
= xfrm_state_lookup(net
, mark
, &x
->id
.daddr
, minspi
, x
->id
.proto
, x
->props
.family
);
1578 for (h
= 0; h
< high
-low
+1; h
++) {
1579 spi
= low
+ prandom_u32()%(high
-low
+1);
1580 x0
= xfrm_state_lookup(net
, mark
, &x
->id
.daddr
, htonl(spi
), x
->id
.proto
, x
->props
.family
);
1582 x
->id
.spi
= htonl(spi
);
1589 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1590 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
, x
->props
.family
);
1591 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
1592 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1598 spin_unlock_bh(&x
->lock
);
1602 EXPORT_SYMBOL(xfrm_alloc_spi
);
1604 static bool __xfrm_state_filter_match(struct xfrm_state
*x
,
1605 struct xfrm_address_filter
*filter
)
1608 if ((filter
->family
== AF_INET
||
1609 filter
->family
== AF_INET6
) &&
1610 x
->props
.family
!= filter
->family
)
1613 return addr_match(&x
->props
.saddr
, &filter
->saddr
,
1615 addr_match(&x
->id
.daddr
, &filter
->daddr
,
1621 int xfrm_state_walk(struct net
*net
, struct xfrm_state_walk
*walk
,
1622 int (*func
)(struct xfrm_state
*, int, void*),
1625 struct xfrm_state
*state
;
1626 struct xfrm_state_walk
*x
;
1629 if (walk
->seq
!= 0 && list_empty(&walk
->all
))
1632 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1633 if (list_empty(&walk
->all
))
1634 x
= list_first_entry(&net
->xfrm
.state_all
, struct xfrm_state_walk
, all
);
1636 x
= list_entry(&walk
->all
, struct xfrm_state_walk
, all
);
1637 list_for_each_entry_from(x
, &net
->xfrm
.state_all
, all
) {
1638 if (x
->state
== XFRM_STATE_DEAD
)
1640 state
= container_of(x
, struct xfrm_state
, km
);
1641 if (!xfrm_id_proto_match(state
->id
.proto
, walk
->proto
))
1643 if (!__xfrm_state_filter_match(state
, walk
->filter
))
1645 err
= func(state
, walk
->seq
, data
);
1647 list_move_tail(&walk
->all
, &x
->all
);
1652 if (walk
->seq
== 0) {
1656 list_del_init(&walk
->all
);
1658 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1661 EXPORT_SYMBOL(xfrm_state_walk
);
1663 void xfrm_state_walk_init(struct xfrm_state_walk
*walk
, u8 proto
,
1664 struct xfrm_address_filter
*filter
)
1666 INIT_LIST_HEAD(&walk
->all
);
1667 walk
->proto
= proto
;
1668 walk
->state
= XFRM_STATE_DEAD
;
1670 walk
->filter
= filter
;
1672 EXPORT_SYMBOL(xfrm_state_walk_init
);
1674 void xfrm_state_walk_done(struct xfrm_state_walk
*walk
, struct net
*net
)
1676 kfree(walk
->filter
);
1678 if (list_empty(&walk
->all
))
1681 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1682 list_del(&walk
->all
);
1683 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1685 EXPORT_SYMBOL(xfrm_state_walk_done
);
1687 static void xfrm_replay_timer_handler(unsigned long data
)
1689 struct xfrm_state
*x
= (struct xfrm_state
*)data
;
1691 spin_lock(&x
->lock
);
1693 if (x
->km
.state
== XFRM_STATE_VALID
) {
1694 if (xfrm_aevent_is_on(xs_net(x
)))
1695 x
->repl
->notify(x
, XFRM_REPLAY_TIMEOUT
);
1697 x
->xflags
|= XFRM_TIME_DEFER
;
1700 spin_unlock(&x
->lock
);
1703 static LIST_HEAD(xfrm_km_list
);
1705 void km_policy_notify(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
1707 struct xfrm_mgr
*km
;
1710 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
)
1711 if (km
->notify_policy
)
1712 km
->notify_policy(xp
, dir
, c
);
1716 void km_state_notify(struct xfrm_state
*x
, const struct km_event
*c
)
1718 struct xfrm_mgr
*km
;
1720 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
)
1726 EXPORT_SYMBOL(km_policy_notify
);
1727 EXPORT_SYMBOL(km_state_notify
);
1729 void km_state_expired(struct xfrm_state
*x
, int hard
, u32 portid
)
1735 c
.event
= XFRM_MSG_EXPIRE
;
1736 km_state_notify(x
, &c
);
1739 EXPORT_SYMBOL(km_state_expired
);
1741 * We send to all registered managers regardless of failure
1742 * We are happy with one success
1744 int km_query(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*pol
)
1746 int err
= -EINVAL
, acqret
;
1747 struct xfrm_mgr
*km
;
1750 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1751 acqret
= km
->acquire(x
, t
, pol
);
1758 EXPORT_SYMBOL(km_query
);
1760 int km_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
1763 struct xfrm_mgr
*km
;
1766 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1767 if (km
->new_mapping
)
1768 err
= km
->new_mapping(x
, ipaddr
, sport
);
1775 EXPORT_SYMBOL(km_new_mapping
);
1777 void km_policy_expired(struct xfrm_policy
*pol
, int dir
, int hard
, u32 portid
)
1783 c
.event
= XFRM_MSG_POLEXPIRE
;
1784 km_policy_notify(pol
, dir
, &c
);
1786 EXPORT_SYMBOL(km_policy_expired
);
1788 #ifdef CONFIG_XFRM_MIGRATE
1789 int km_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
1790 const struct xfrm_migrate
*m
, int num_migrate
,
1791 const struct xfrm_kmaddress
*k
)
1795 struct xfrm_mgr
*km
;
1798 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1800 ret
= km
->migrate(sel
, dir
, type
, m
, num_migrate
, k
);
1808 EXPORT_SYMBOL(km_migrate
);
1811 int km_report(struct net
*net
, u8 proto
, struct xfrm_selector
*sel
, xfrm_address_t
*addr
)
1815 struct xfrm_mgr
*km
;
1818 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1820 ret
= km
->report(net
, proto
, sel
, addr
);
1828 EXPORT_SYMBOL(km_report
);
1830 bool km_is_alive(const struct km_event
*c
)
1832 struct xfrm_mgr
*km
;
1833 bool is_alive
= false;
1836 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1837 if (km
->is_alive
&& km
->is_alive(c
)) {
1846 EXPORT_SYMBOL(km_is_alive
);
1848 int xfrm_user_policy(struct sock
*sk
, int optname
, u8 __user
*optval
, int optlen
)
1852 struct xfrm_mgr
*km
;
1853 struct xfrm_policy
*pol
= NULL
;
1855 if (optlen
<= 0 || optlen
> PAGE_SIZE
)
1858 data
= kmalloc(optlen
, GFP_KERNEL
);
1863 if (copy_from_user(data
, optval
, optlen
))
1868 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1869 pol
= km
->compile_policy(sk
, optname
, data
,
1877 xfrm_sk_policy_insert(sk
, err
, pol
);
1886 EXPORT_SYMBOL(xfrm_user_policy
);
1888 static DEFINE_SPINLOCK(xfrm_km_lock
);
1890 int xfrm_register_km(struct xfrm_mgr
*km
)
1892 spin_lock_bh(&xfrm_km_lock
);
1893 list_add_tail_rcu(&km
->list
, &xfrm_km_list
);
1894 spin_unlock_bh(&xfrm_km_lock
);
1897 EXPORT_SYMBOL(xfrm_register_km
);
1899 int xfrm_unregister_km(struct xfrm_mgr
*km
)
1901 spin_lock_bh(&xfrm_km_lock
);
1902 list_del_rcu(&km
->list
);
1903 spin_unlock_bh(&xfrm_km_lock
);
1907 EXPORT_SYMBOL(xfrm_unregister_km
);
1909 int xfrm_state_register_afinfo(struct xfrm_state_afinfo
*afinfo
)
1912 if (unlikely(afinfo
== NULL
))
1914 if (unlikely(afinfo
->family
>= NPROTO
))
1915 return -EAFNOSUPPORT
;
1916 spin_lock_bh(&xfrm_state_afinfo_lock
);
1917 if (unlikely(xfrm_state_afinfo
[afinfo
->family
] != NULL
))
1920 rcu_assign_pointer(xfrm_state_afinfo
[afinfo
->family
], afinfo
);
1921 spin_unlock_bh(&xfrm_state_afinfo_lock
);
1924 EXPORT_SYMBOL(xfrm_state_register_afinfo
);
1926 int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo
*afinfo
)
1929 if (unlikely(afinfo
== NULL
))
1931 if (unlikely(afinfo
->family
>= NPROTO
))
1932 return -EAFNOSUPPORT
;
1933 spin_lock_bh(&xfrm_state_afinfo_lock
);
1934 if (likely(xfrm_state_afinfo
[afinfo
->family
] != NULL
)) {
1935 if (unlikely(xfrm_state_afinfo
[afinfo
->family
] != afinfo
))
1938 RCU_INIT_POINTER(xfrm_state_afinfo
[afinfo
->family
], NULL
);
1940 spin_unlock_bh(&xfrm_state_afinfo_lock
);
1944 EXPORT_SYMBOL(xfrm_state_unregister_afinfo
);
1946 struct xfrm_state_afinfo
*xfrm_state_get_afinfo(unsigned int family
)
1948 struct xfrm_state_afinfo
*afinfo
;
1949 if (unlikely(family
>= NPROTO
))
1952 afinfo
= rcu_dereference(xfrm_state_afinfo
[family
]);
1953 if (unlikely(!afinfo
))
1958 void xfrm_state_put_afinfo(struct xfrm_state_afinfo
*afinfo
)
1963 /* Temporarily located here until net/xfrm/xfrm_tunnel.c is created */
1964 void xfrm_state_delete_tunnel(struct xfrm_state
*x
)
1967 struct xfrm_state
*t
= x
->tunnel
;
1969 if (atomic_read(&t
->tunnel_users
) == 2)
1970 xfrm_state_delete(t
);
1971 atomic_dec(&t
->tunnel_users
);
1976 EXPORT_SYMBOL(xfrm_state_delete_tunnel
);
1978 int xfrm_state_mtu(struct xfrm_state
*x
, int mtu
)
1982 spin_lock_bh(&x
->lock
);
1983 if (x
->km
.state
== XFRM_STATE_VALID
&&
1984 x
->type
&& x
->type
->get_mtu
)
1985 res
= x
->type
->get_mtu(x
, mtu
);
1987 res
= mtu
- x
->props
.header_len
;
1988 spin_unlock_bh(&x
->lock
);
1992 int __xfrm_init_state(struct xfrm_state
*x
, bool init_replay
)
1994 struct xfrm_state_afinfo
*afinfo
;
1995 struct xfrm_mode
*inner_mode
;
1996 int family
= x
->props
.family
;
1999 err
= -EAFNOSUPPORT
;
2000 afinfo
= xfrm_state_get_afinfo(family
);
2005 if (afinfo
->init_flags
)
2006 err
= afinfo
->init_flags(x
);
2008 xfrm_state_put_afinfo(afinfo
);
2013 err
= -EPROTONOSUPPORT
;
2015 if (x
->sel
.family
!= AF_UNSPEC
) {
2016 inner_mode
= xfrm_get_mode(x
->props
.mode
, x
->sel
.family
);
2017 if (inner_mode
== NULL
)
2020 if (!(inner_mode
->flags
& XFRM_MODE_FLAG_TUNNEL
) &&
2021 family
!= x
->sel
.family
) {
2022 xfrm_put_mode(inner_mode
);
2026 x
->inner_mode
= inner_mode
;
2028 struct xfrm_mode
*inner_mode_iaf
;
2029 int iafamily
= AF_INET
;
2031 inner_mode
= xfrm_get_mode(x
->props
.mode
, x
->props
.family
);
2032 if (inner_mode
== NULL
)
2035 if (!(inner_mode
->flags
& XFRM_MODE_FLAG_TUNNEL
)) {
2036 xfrm_put_mode(inner_mode
);
2039 x
->inner_mode
= inner_mode
;
2041 if (x
->props
.family
== AF_INET
)
2042 iafamily
= AF_INET6
;
2044 inner_mode_iaf
= xfrm_get_mode(x
->props
.mode
, iafamily
);
2045 if (inner_mode_iaf
) {
2046 if (inner_mode_iaf
->flags
& XFRM_MODE_FLAG_TUNNEL
)
2047 x
->inner_mode_iaf
= inner_mode_iaf
;
2049 xfrm_put_mode(inner_mode_iaf
);
2053 x
->type
= xfrm_get_type(x
->id
.proto
, family
);
2054 if (x
->type
== NULL
)
2057 err
= x
->type
->init_state(x
);
2061 x
->outer_mode
= xfrm_get_mode(x
->props
.mode
, family
);
2062 if (x
->outer_mode
== NULL
) {
2063 err
= -EPROTONOSUPPORT
;
2068 err
= xfrm_init_replay(x
);
2073 x
->km
.state
= XFRM_STATE_VALID
;
2079 EXPORT_SYMBOL(__xfrm_init_state
);
2081 int xfrm_init_state(struct xfrm_state
*x
)
2083 return __xfrm_init_state(x
, true);
2086 EXPORT_SYMBOL(xfrm_init_state
);
2088 int __net_init
xfrm_state_init(struct net
*net
)
2092 INIT_LIST_HEAD(&net
->xfrm
.state_all
);
2094 sz
= sizeof(struct hlist_head
) * 8;
2096 net
->xfrm
.state_bydst
= xfrm_hash_alloc(sz
);
2097 if (!net
->xfrm
.state_bydst
)
2099 net
->xfrm
.state_bysrc
= xfrm_hash_alloc(sz
);
2100 if (!net
->xfrm
.state_bysrc
)
2102 net
->xfrm
.state_byspi
= xfrm_hash_alloc(sz
);
2103 if (!net
->xfrm
.state_byspi
)
2105 net
->xfrm
.state_hmask
= ((sz
/ sizeof(struct hlist_head
)) - 1);
2107 net
->xfrm
.state_num
= 0;
2108 INIT_WORK(&net
->xfrm
.state_hash_work
, xfrm_hash_resize
);
2109 INIT_HLIST_HEAD(&net
->xfrm
.state_gc_list
);
2110 INIT_WORK(&net
->xfrm
.state_gc_work
, xfrm_state_gc_task
);
2111 spin_lock_init(&net
->xfrm
.xfrm_state_lock
);
2115 xfrm_hash_free(net
->xfrm
.state_bysrc
, sz
);
2117 xfrm_hash_free(net
->xfrm
.state_bydst
, sz
);
2122 void xfrm_state_fini(struct net
*net
)
2126 flush_work(&net
->xfrm
.state_hash_work
);
2127 xfrm_state_flush(net
, IPSEC_PROTO_ANY
, false);
2128 flush_work(&net
->xfrm
.state_gc_work
);
2130 WARN_ON(!list_empty(&net
->xfrm
.state_all
));
2132 sz
= (net
->xfrm
.state_hmask
+ 1) * sizeof(struct hlist_head
);
2133 WARN_ON(!hlist_empty(net
->xfrm
.state_byspi
));
2134 xfrm_hash_free(net
->xfrm
.state_byspi
, sz
);
2135 WARN_ON(!hlist_empty(net
->xfrm
.state_bysrc
));
2136 xfrm_hash_free(net
->xfrm
.state_bysrc
, sz
);
2137 WARN_ON(!hlist_empty(net
->xfrm
.state_bydst
));
2138 xfrm_hash_free(net
->xfrm
.state_bydst
, sz
);
2141 #ifdef CONFIG_AUDITSYSCALL
2142 static void xfrm_audit_helper_sainfo(struct xfrm_state
*x
,
2143 struct audit_buffer
*audit_buf
)
2145 struct xfrm_sec_ctx
*ctx
= x
->security
;
2146 u32 spi
= ntohl(x
->id
.spi
);
2149 audit_log_format(audit_buf
, " sec_alg=%u sec_doi=%u sec_obj=%s",
2150 ctx
->ctx_alg
, ctx
->ctx_doi
, ctx
->ctx_str
);
2152 switch (x
->props
.family
) {
2154 audit_log_format(audit_buf
, " src=%pI4 dst=%pI4",
2155 &x
->props
.saddr
.a4
, &x
->id
.daddr
.a4
);
2158 audit_log_format(audit_buf
, " src=%pI6 dst=%pI6",
2159 x
->props
.saddr
.a6
, x
->id
.daddr
.a6
);
2163 audit_log_format(audit_buf
, " spi=%u(0x%x)", spi
, spi
);
2166 static void xfrm_audit_helper_pktinfo(struct sk_buff
*skb
, u16 family
,
2167 struct audit_buffer
*audit_buf
)
2169 const struct iphdr
*iph4
;
2170 const struct ipv6hdr
*iph6
;
2175 audit_log_format(audit_buf
, " src=%pI4 dst=%pI4",
2176 &iph4
->saddr
, &iph4
->daddr
);
2179 iph6
= ipv6_hdr(skb
);
2180 audit_log_format(audit_buf
,
2181 " src=%pI6 dst=%pI6 flowlbl=0x%x%02x%02x",
2182 &iph6
->saddr
, &iph6
->daddr
,
2183 iph6
->flow_lbl
[0] & 0x0f,
2190 void xfrm_audit_state_add(struct xfrm_state
*x
, int result
, bool task_valid
)
2192 struct audit_buffer
*audit_buf
;
2194 audit_buf
= xfrm_audit_start("SAD-add");
2195 if (audit_buf
== NULL
)
2197 xfrm_audit_helper_usrinfo(task_valid
, audit_buf
);
2198 xfrm_audit_helper_sainfo(x
, audit_buf
);
2199 audit_log_format(audit_buf
, " res=%u", result
);
2200 audit_log_end(audit_buf
);
2202 EXPORT_SYMBOL_GPL(xfrm_audit_state_add
);
2204 void xfrm_audit_state_delete(struct xfrm_state
*x
, int result
, bool task_valid
)
2206 struct audit_buffer
*audit_buf
;
2208 audit_buf
= xfrm_audit_start("SAD-delete");
2209 if (audit_buf
== NULL
)
2211 xfrm_audit_helper_usrinfo(task_valid
, audit_buf
);
2212 xfrm_audit_helper_sainfo(x
, audit_buf
);
2213 audit_log_format(audit_buf
, " res=%u", result
);
2214 audit_log_end(audit_buf
);
2216 EXPORT_SYMBOL_GPL(xfrm_audit_state_delete
);
2218 void xfrm_audit_state_replay_overflow(struct xfrm_state
*x
,
2219 struct sk_buff
*skb
)
2221 struct audit_buffer
*audit_buf
;
2224 audit_buf
= xfrm_audit_start("SA-replay-overflow");
2225 if (audit_buf
== NULL
)
2227 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2228 /* don't record the sequence number because it's inherent in this kind
2229 * of audit message */
2230 spi
= ntohl(x
->id
.spi
);
2231 audit_log_format(audit_buf
, " spi=%u(0x%x)", spi
, spi
);
2232 audit_log_end(audit_buf
);
2234 EXPORT_SYMBOL_GPL(xfrm_audit_state_replay_overflow
);
2236 void xfrm_audit_state_replay(struct xfrm_state
*x
,
2237 struct sk_buff
*skb
, __be32 net_seq
)
2239 struct audit_buffer
*audit_buf
;
2242 audit_buf
= xfrm_audit_start("SA-replayed-pkt");
2243 if (audit_buf
== NULL
)
2245 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2246 spi
= ntohl(x
->id
.spi
);
2247 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2248 spi
, spi
, ntohl(net_seq
));
2249 audit_log_end(audit_buf
);
2251 EXPORT_SYMBOL_GPL(xfrm_audit_state_replay
);
2253 void xfrm_audit_state_notfound_simple(struct sk_buff
*skb
, u16 family
)
2255 struct audit_buffer
*audit_buf
;
2257 audit_buf
= xfrm_audit_start("SA-notfound");
2258 if (audit_buf
== NULL
)
2260 xfrm_audit_helper_pktinfo(skb
, family
, audit_buf
);
2261 audit_log_end(audit_buf
);
2263 EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound_simple
);
2265 void xfrm_audit_state_notfound(struct sk_buff
*skb
, u16 family
,
2266 __be32 net_spi
, __be32 net_seq
)
2268 struct audit_buffer
*audit_buf
;
2271 audit_buf
= xfrm_audit_start("SA-notfound");
2272 if (audit_buf
== NULL
)
2274 xfrm_audit_helper_pktinfo(skb
, family
, audit_buf
);
2275 spi
= ntohl(net_spi
);
2276 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2277 spi
, spi
, ntohl(net_seq
));
2278 audit_log_end(audit_buf
);
2280 EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound
);
2282 void xfrm_audit_state_icvfail(struct xfrm_state
*x
,
2283 struct sk_buff
*skb
, u8 proto
)
2285 struct audit_buffer
*audit_buf
;
2289 audit_buf
= xfrm_audit_start("SA-icv-failure");
2290 if (audit_buf
== NULL
)
2292 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2293 if (xfrm_parse_spi(skb
, proto
, &net_spi
, &net_seq
) == 0) {
2294 u32 spi
= ntohl(net_spi
);
2295 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2296 spi
, spi
, ntohl(net_seq
));
2298 audit_log_end(audit_buf
);
2300 EXPORT_SYMBOL_GPL(xfrm_audit_state_icvfail
);
2301 #endif /* CONFIG_AUDITSYSCALL */