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 DEFINE_SPINLOCK(xfrm_state_lock
);
40 static unsigned int xfrm_state_hashmax __read_mostly
= 1 * 1024 * 1024;
42 static struct xfrm_state_afinfo
*xfrm_state_get_afinfo(unsigned int family
);
43 static void xfrm_state_put_afinfo(struct xfrm_state_afinfo
*afinfo
);
45 static inline unsigned int xfrm_dst_hash(struct net
*net
,
46 const xfrm_address_t
*daddr
,
47 const xfrm_address_t
*saddr
,
49 unsigned short family
)
51 return __xfrm_dst_hash(daddr
, saddr
, reqid
, family
, net
->xfrm
.state_hmask
);
54 static inline unsigned int xfrm_src_hash(struct net
*net
,
55 const xfrm_address_t
*daddr
,
56 const xfrm_address_t
*saddr
,
57 unsigned short family
)
59 return __xfrm_src_hash(daddr
, saddr
, family
, net
->xfrm
.state_hmask
);
62 static inline unsigned int
63 xfrm_spi_hash(struct net
*net
, const xfrm_address_t
*daddr
,
64 __be32 spi
, u8 proto
, unsigned short family
)
66 return __xfrm_spi_hash(daddr
, spi
, proto
, family
, net
->xfrm
.state_hmask
);
69 static void xfrm_hash_transfer(struct hlist_head
*list
,
70 struct hlist_head
*ndsttable
,
71 struct hlist_head
*nsrctable
,
72 struct hlist_head
*nspitable
,
73 unsigned int nhashmask
)
75 struct hlist_node
*entry
, *tmp
;
78 hlist_for_each_entry_safe(x
, entry
, tmp
, list
, bydst
) {
81 h
= __xfrm_dst_hash(&x
->id
.daddr
, &x
->props
.saddr
,
82 x
->props
.reqid
, x
->props
.family
,
84 hlist_add_head(&x
->bydst
, ndsttable
+h
);
86 h
= __xfrm_src_hash(&x
->id
.daddr
, &x
->props
.saddr
,
89 hlist_add_head(&x
->bysrc
, nsrctable
+h
);
92 h
= __xfrm_spi_hash(&x
->id
.daddr
, x
->id
.spi
,
93 x
->id
.proto
, x
->props
.family
,
95 hlist_add_head(&x
->byspi
, nspitable
+h
);
100 static unsigned long xfrm_hash_new_size(unsigned int state_hmask
)
102 return ((state_hmask
+ 1) << 1) * sizeof(struct hlist_head
);
105 static DEFINE_MUTEX(hash_resize_mutex
);
107 static void xfrm_hash_resize(struct work_struct
*work
)
109 struct net
*net
= container_of(work
, struct net
, xfrm
.state_hash_work
);
110 struct hlist_head
*ndst
, *nsrc
, *nspi
, *odst
, *osrc
, *ospi
;
111 unsigned long nsize
, osize
;
112 unsigned int nhashmask
, ohashmask
;
115 mutex_lock(&hash_resize_mutex
);
117 nsize
= xfrm_hash_new_size(net
->xfrm
.state_hmask
);
118 ndst
= xfrm_hash_alloc(nsize
);
121 nsrc
= xfrm_hash_alloc(nsize
);
123 xfrm_hash_free(ndst
, nsize
);
126 nspi
= xfrm_hash_alloc(nsize
);
128 xfrm_hash_free(ndst
, nsize
);
129 xfrm_hash_free(nsrc
, nsize
);
133 spin_lock_bh(&xfrm_state_lock
);
135 nhashmask
= (nsize
/ sizeof(struct hlist_head
)) - 1U;
136 for (i
= net
->xfrm
.state_hmask
; i
>= 0; i
--)
137 xfrm_hash_transfer(net
->xfrm
.state_bydst
+i
, ndst
, nsrc
, nspi
,
140 odst
= net
->xfrm
.state_bydst
;
141 osrc
= net
->xfrm
.state_bysrc
;
142 ospi
= net
->xfrm
.state_byspi
;
143 ohashmask
= net
->xfrm
.state_hmask
;
145 net
->xfrm
.state_bydst
= ndst
;
146 net
->xfrm
.state_bysrc
= nsrc
;
147 net
->xfrm
.state_byspi
= nspi
;
148 net
->xfrm
.state_hmask
= nhashmask
;
150 spin_unlock_bh(&xfrm_state_lock
);
152 osize
= (ohashmask
+ 1) * sizeof(struct hlist_head
);
153 xfrm_hash_free(odst
, osize
);
154 xfrm_hash_free(osrc
, osize
);
155 xfrm_hash_free(ospi
, osize
);
158 mutex_unlock(&hash_resize_mutex
);
161 static DEFINE_SPINLOCK(xfrm_state_afinfo_lock
);
162 static struct xfrm_state_afinfo __rcu
*xfrm_state_afinfo
[NPROTO
];
164 static DEFINE_SPINLOCK(xfrm_state_gc_lock
);
166 int __xfrm_state_delete(struct xfrm_state
*x
);
168 int km_query(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*pol
);
169 void km_state_expired(struct xfrm_state
*x
, int hard
, u32 portid
);
171 static DEFINE_SPINLOCK(xfrm_type_lock
);
172 int xfrm_register_type(const struct xfrm_type
*type
, unsigned short family
)
174 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
175 const struct xfrm_type
**typemap
;
178 if (unlikely(afinfo
== NULL
))
179 return -EAFNOSUPPORT
;
180 typemap
= afinfo
->type_map
;
181 spin_lock_bh(&xfrm_type_lock
);
183 if (likely(typemap
[type
->proto
] == NULL
))
184 typemap
[type
->proto
] = type
;
187 spin_unlock_bh(&xfrm_type_lock
);
188 xfrm_state_put_afinfo(afinfo
);
191 EXPORT_SYMBOL(xfrm_register_type
);
193 int xfrm_unregister_type(const struct xfrm_type
*type
, unsigned short family
)
195 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
196 const struct xfrm_type
**typemap
;
199 if (unlikely(afinfo
== NULL
))
200 return -EAFNOSUPPORT
;
201 typemap
= afinfo
->type_map
;
202 spin_lock_bh(&xfrm_type_lock
);
204 if (unlikely(typemap
[type
->proto
] != type
))
207 typemap
[type
->proto
] = NULL
;
208 spin_unlock_bh(&xfrm_type_lock
);
209 xfrm_state_put_afinfo(afinfo
);
212 EXPORT_SYMBOL(xfrm_unregister_type
);
214 static const struct xfrm_type
*xfrm_get_type(u8 proto
, unsigned short family
)
216 struct xfrm_state_afinfo
*afinfo
;
217 const struct xfrm_type
**typemap
;
218 const struct xfrm_type
*type
;
219 int modload_attempted
= 0;
222 afinfo
= xfrm_state_get_afinfo(family
);
223 if (unlikely(afinfo
== NULL
))
225 typemap
= afinfo
->type_map
;
227 type
= typemap
[proto
];
228 if (unlikely(type
&& !try_module_get(type
->owner
)))
230 if (!type
&& !modload_attempted
) {
231 xfrm_state_put_afinfo(afinfo
);
232 request_module("xfrm-type-%d-%d", family
, proto
);
233 modload_attempted
= 1;
237 xfrm_state_put_afinfo(afinfo
);
241 static void xfrm_put_type(const struct xfrm_type
*type
)
243 module_put(type
->owner
);
246 static DEFINE_SPINLOCK(xfrm_mode_lock
);
247 int xfrm_register_mode(struct xfrm_mode
*mode
, int family
)
249 struct xfrm_state_afinfo
*afinfo
;
250 struct xfrm_mode
**modemap
;
253 if (unlikely(mode
->encap
>= XFRM_MODE_MAX
))
256 afinfo
= xfrm_state_get_afinfo(family
);
257 if (unlikely(afinfo
== NULL
))
258 return -EAFNOSUPPORT
;
261 modemap
= afinfo
->mode_map
;
262 spin_lock_bh(&xfrm_mode_lock
);
263 if (modemap
[mode
->encap
])
267 if (!try_module_get(afinfo
->owner
))
270 mode
->afinfo
= afinfo
;
271 modemap
[mode
->encap
] = mode
;
275 spin_unlock_bh(&xfrm_mode_lock
);
276 xfrm_state_put_afinfo(afinfo
);
279 EXPORT_SYMBOL(xfrm_register_mode
);
281 int xfrm_unregister_mode(struct xfrm_mode
*mode
, int family
)
283 struct xfrm_state_afinfo
*afinfo
;
284 struct xfrm_mode
**modemap
;
287 if (unlikely(mode
->encap
>= XFRM_MODE_MAX
))
290 afinfo
= xfrm_state_get_afinfo(family
);
291 if (unlikely(afinfo
== NULL
))
292 return -EAFNOSUPPORT
;
295 modemap
= afinfo
->mode_map
;
296 spin_lock_bh(&xfrm_mode_lock
);
297 if (likely(modemap
[mode
->encap
] == mode
)) {
298 modemap
[mode
->encap
] = NULL
;
299 module_put(mode
->afinfo
->owner
);
303 spin_unlock_bh(&xfrm_mode_lock
);
304 xfrm_state_put_afinfo(afinfo
);
307 EXPORT_SYMBOL(xfrm_unregister_mode
);
309 static struct xfrm_mode
*xfrm_get_mode(unsigned int encap
, int family
)
311 struct xfrm_state_afinfo
*afinfo
;
312 struct xfrm_mode
*mode
;
313 int modload_attempted
= 0;
315 if (unlikely(encap
>= XFRM_MODE_MAX
))
319 afinfo
= xfrm_state_get_afinfo(family
);
320 if (unlikely(afinfo
== NULL
))
323 mode
= afinfo
->mode_map
[encap
];
324 if (unlikely(mode
&& !try_module_get(mode
->owner
)))
326 if (!mode
&& !modload_attempted
) {
327 xfrm_state_put_afinfo(afinfo
);
328 request_module("xfrm-mode-%d-%d", family
, encap
);
329 modload_attempted
= 1;
333 xfrm_state_put_afinfo(afinfo
);
337 static void xfrm_put_mode(struct xfrm_mode
*mode
)
339 module_put(mode
->owner
);
342 static void xfrm_state_gc_destroy(struct xfrm_state
*x
)
344 tasklet_hrtimer_cancel(&x
->mtimer
);
345 del_timer_sync(&x
->rtimer
);
351 kfree(x
->replay_esn
);
352 kfree(x
->preplay_esn
);
354 xfrm_put_mode(x
->inner_mode
);
355 if (x
->inner_mode_iaf
)
356 xfrm_put_mode(x
->inner_mode_iaf
);
358 xfrm_put_mode(x
->outer_mode
);
360 x
->type
->destructor(x
);
361 xfrm_put_type(x
->type
);
363 security_xfrm_state_free(x
);
367 static void xfrm_state_gc_task(struct work_struct
*work
)
369 struct net
*net
= container_of(work
, struct net
, xfrm
.state_gc_work
);
370 struct xfrm_state
*x
;
371 struct hlist_node
*entry
, *tmp
;
372 struct hlist_head gc_list
;
374 spin_lock_bh(&xfrm_state_gc_lock
);
375 hlist_move_list(&net
->xfrm
.state_gc_list
, &gc_list
);
376 spin_unlock_bh(&xfrm_state_gc_lock
);
378 hlist_for_each_entry_safe(x
, entry
, tmp
, &gc_list
, gclist
)
379 xfrm_state_gc_destroy(x
);
381 wake_up(&net
->xfrm
.km_waitq
);
384 static inline unsigned long make_jiffies(long secs
)
386 if (secs
>= (MAX_SCHEDULE_TIMEOUT
-1)/HZ
)
387 return MAX_SCHEDULE_TIMEOUT
-1;
392 static enum hrtimer_restart
xfrm_timer_handler(struct hrtimer
* me
)
394 struct tasklet_hrtimer
*thr
= container_of(me
, struct tasklet_hrtimer
, timer
);
395 struct xfrm_state
*x
= container_of(thr
, struct xfrm_state
, mtimer
);
396 struct net
*net
= xs_net(x
);
397 unsigned long now
= get_seconds();
398 long next
= LONG_MAX
;
403 if (x
->km
.state
== XFRM_STATE_DEAD
)
405 if (x
->km
.state
== XFRM_STATE_EXPIRED
)
407 if (x
->lft
.hard_add_expires_seconds
) {
408 long tmo
= x
->lft
.hard_add_expires_seconds
+
409 x
->curlft
.add_time
- now
;
411 if (x
->xflags
& XFRM_SOFT_EXPIRE
) {
412 /* enter hard expire without soft expire first?!
413 * setting a new date could trigger this.
414 * workarbound: fix x->curflt.add_time by below:
416 x
->curlft
.add_time
= now
- x
->saved_tmo
- 1;
417 tmo
= x
->lft
.hard_add_expires_seconds
- x
->saved_tmo
;
424 if (x
->lft
.hard_use_expires_seconds
) {
425 long tmo
= x
->lft
.hard_use_expires_seconds
+
426 (x
->curlft
.use_time
? : now
) - now
;
434 if (x
->lft
.soft_add_expires_seconds
) {
435 long tmo
= x
->lft
.soft_add_expires_seconds
+
436 x
->curlft
.add_time
- now
;
439 x
->xflags
&= ~XFRM_SOFT_EXPIRE
;
440 } else if (tmo
< next
) {
442 x
->xflags
|= XFRM_SOFT_EXPIRE
;
446 if (x
->lft
.soft_use_expires_seconds
) {
447 long tmo
= x
->lft
.soft_use_expires_seconds
+
448 (x
->curlft
.use_time
? : now
) - now
;
457 km_state_expired(x
, 0, 0);
459 if (next
!= LONG_MAX
){
460 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(next
, 0), HRTIMER_MODE_REL
);
466 if (x
->km
.state
== XFRM_STATE_ACQ
&& x
->id
.spi
== 0) {
467 x
->km
.state
= XFRM_STATE_EXPIRED
;
468 wake_up(&net
->xfrm
.km_waitq
);
473 err
= __xfrm_state_delete(x
);
474 if (!err
&& x
->id
.spi
)
475 km_state_expired(x
, 1, 0);
477 xfrm_audit_state_delete(x
, err
? 0 : 1,
478 audit_get_loginuid(current
),
479 audit_get_sessionid(current
), 0);
482 spin_unlock(&x
->lock
);
483 return HRTIMER_NORESTART
;
486 static void xfrm_replay_timer_handler(unsigned long data
);
488 struct xfrm_state
*xfrm_state_alloc(struct net
*net
)
490 struct xfrm_state
*x
;
492 x
= kzalloc(sizeof(struct xfrm_state
), GFP_ATOMIC
);
495 write_pnet(&x
->xs_net
, net
);
496 atomic_set(&x
->refcnt
, 1);
497 atomic_set(&x
->tunnel_users
, 0);
498 INIT_LIST_HEAD(&x
->km
.all
);
499 INIT_HLIST_NODE(&x
->bydst
);
500 INIT_HLIST_NODE(&x
->bysrc
);
501 INIT_HLIST_NODE(&x
->byspi
);
502 tasklet_hrtimer_init(&x
->mtimer
, xfrm_timer_handler
, CLOCK_REALTIME
, HRTIMER_MODE_ABS
);
503 setup_timer(&x
->rtimer
, xfrm_replay_timer_handler
,
505 x
->curlft
.add_time
= get_seconds();
506 x
->lft
.soft_byte_limit
= XFRM_INF
;
507 x
->lft
.soft_packet_limit
= XFRM_INF
;
508 x
->lft
.hard_byte_limit
= XFRM_INF
;
509 x
->lft
.hard_packet_limit
= XFRM_INF
;
510 x
->replay_maxage
= 0;
511 x
->replay_maxdiff
= 0;
512 x
->inner_mode
= NULL
;
513 x
->inner_mode_iaf
= NULL
;
514 spin_lock_init(&x
->lock
);
518 EXPORT_SYMBOL(xfrm_state_alloc
);
520 void __xfrm_state_destroy(struct xfrm_state
*x
)
522 struct net
*net
= xs_net(x
);
524 WARN_ON(x
->km
.state
!= XFRM_STATE_DEAD
);
526 spin_lock_bh(&xfrm_state_gc_lock
);
527 hlist_add_head(&x
->gclist
, &net
->xfrm
.state_gc_list
);
528 spin_unlock_bh(&xfrm_state_gc_lock
);
529 schedule_work(&net
->xfrm
.state_gc_work
);
531 EXPORT_SYMBOL(__xfrm_state_destroy
);
533 int __xfrm_state_delete(struct xfrm_state
*x
)
535 struct net
*net
= xs_net(x
);
538 if (x
->km
.state
!= XFRM_STATE_DEAD
) {
539 x
->km
.state
= XFRM_STATE_DEAD
;
540 spin_lock(&xfrm_state_lock
);
541 list_del(&x
->km
.all
);
542 hlist_del(&x
->bydst
);
543 hlist_del(&x
->bysrc
);
545 hlist_del(&x
->byspi
);
546 net
->xfrm
.state_num
--;
547 spin_unlock(&xfrm_state_lock
);
549 /* All xfrm_state objects are created by xfrm_state_alloc.
550 * The xfrm_state_alloc call gives a reference, and that
551 * is what we are dropping here.
559 EXPORT_SYMBOL(__xfrm_state_delete
);
561 int xfrm_state_delete(struct xfrm_state
*x
)
565 spin_lock_bh(&x
->lock
);
566 err
= __xfrm_state_delete(x
);
567 spin_unlock_bh(&x
->lock
);
571 EXPORT_SYMBOL(xfrm_state_delete
);
573 #ifdef CONFIG_SECURITY_NETWORK_XFRM
575 xfrm_state_flush_secctx_check(struct net
*net
, u8 proto
, struct xfrm_audit
*audit_info
)
579 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
580 struct hlist_node
*entry
;
581 struct xfrm_state
*x
;
583 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+i
, bydst
) {
584 if (xfrm_id_proto_match(x
->id
.proto
, proto
) &&
585 (err
= security_xfrm_state_delete(x
)) != 0) {
586 xfrm_audit_state_delete(x
, 0,
587 audit_info
->loginuid
,
588 audit_info
->sessionid
,
599 xfrm_state_flush_secctx_check(struct net
*net
, u8 proto
, struct xfrm_audit
*audit_info
)
605 int xfrm_state_flush(struct net
*net
, u8 proto
, struct xfrm_audit
*audit_info
)
607 int i
, err
= 0, cnt
= 0;
609 spin_lock_bh(&xfrm_state_lock
);
610 err
= xfrm_state_flush_secctx_check(net
, proto
, audit_info
);
615 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
616 struct hlist_node
*entry
;
617 struct xfrm_state
*x
;
619 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+i
, bydst
) {
620 if (!xfrm_state_kern(x
) &&
621 xfrm_id_proto_match(x
->id
.proto
, proto
)) {
623 spin_unlock_bh(&xfrm_state_lock
);
625 err
= xfrm_state_delete(x
);
626 xfrm_audit_state_delete(x
, err
? 0 : 1,
627 audit_info
->loginuid
,
628 audit_info
->sessionid
,
634 spin_lock_bh(&xfrm_state_lock
);
643 spin_unlock_bh(&xfrm_state_lock
);
644 wake_up(&net
->xfrm
.km_waitq
);
647 EXPORT_SYMBOL(xfrm_state_flush
);
649 void xfrm_sad_getinfo(struct net
*net
, struct xfrmk_sadinfo
*si
)
651 spin_lock_bh(&xfrm_state_lock
);
652 si
->sadcnt
= net
->xfrm
.state_num
;
653 si
->sadhcnt
= net
->xfrm
.state_hmask
;
654 si
->sadhmcnt
= xfrm_state_hashmax
;
655 spin_unlock_bh(&xfrm_state_lock
);
657 EXPORT_SYMBOL(xfrm_sad_getinfo
);
660 xfrm_init_tempstate(struct xfrm_state
*x
, const struct flowi
*fl
,
661 const struct xfrm_tmpl
*tmpl
,
662 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
663 unsigned short family
)
665 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
668 afinfo
->init_tempsel(&x
->sel
, fl
);
670 if (family
!= tmpl
->encap_family
) {
671 xfrm_state_put_afinfo(afinfo
);
672 afinfo
= xfrm_state_get_afinfo(tmpl
->encap_family
);
676 afinfo
->init_temprop(x
, tmpl
, daddr
, saddr
);
677 xfrm_state_put_afinfo(afinfo
);
681 static struct xfrm_state
*__xfrm_state_lookup(struct net
*net
, u32 mark
,
682 const xfrm_address_t
*daddr
,
683 __be32 spi
, u8 proto
,
684 unsigned short family
)
686 unsigned int h
= xfrm_spi_hash(net
, daddr
, spi
, proto
, family
);
687 struct xfrm_state
*x
;
688 struct hlist_node
*entry
;
690 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_byspi
+h
, byspi
) {
691 if (x
->props
.family
!= family
||
693 x
->id
.proto
!= proto
||
694 !xfrm_addr_equal(&x
->id
.daddr
, daddr
, family
))
697 if ((mark
& x
->mark
.m
) != x
->mark
.v
)
706 static struct xfrm_state
*__xfrm_state_lookup_byaddr(struct net
*net
, u32 mark
,
707 const xfrm_address_t
*daddr
,
708 const xfrm_address_t
*saddr
,
709 u8 proto
, unsigned short family
)
711 unsigned int h
= xfrm_src_hash(net
, daddr
, saddr
, family
);
712 struct xfrm_state
*x
;
713 struct hlist_node
*entry
;
715 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bysrc
+h
, bysrc
) {
716 if (x
->props
.family
!= family
||
717 x
->id
.proto
!= proto
||
718 !xfrm_addr_equal(&x
->id
.daddr
, daddr
, family
) ||
719 !xfrm_addr_equal(&x
->props
.saddr
, saddr
, family
))
722 if ((mark
& x
->mark
.m
) != x
->mark
.v
)
731 static inline struct xfrm_state
*
732 __xfrm_state_locate(struct xfrm_state
*x
, int use_spi
, int family
)
734 struct net
*net
= xs_net(x
);
735 u32 mark
= x
->mark
.v
& x
->mark
.m
;
738 return __xfrm_state_lookup(net
, mark
, &x
->id
.daddr
,
739 x
->id
.spi
, x
->id
.proto
, family
);
741 return __xfrm_state_lookup_byaddr(net
, mark
,
744 x
->id
.proto
, family
);
747 static void xfrm_hash_grow_check(struct net
*net
, int have_hash_collision
)
749 if (have_hash_collision
&&
750 (net
->xfrm
.state_hmask
+ 1) < xfrm_state_hashmax
&&
751 net
->xfrm
.state_num
> net
->xfrm
.state_hmask
)
752 schedule_work(&net
->xfrm
.state_hash_work
);
755 static void xfrm_state_look_at(struct xfrm_policy
*pol
, struct xfrm_state
*x
,
756 const struct flowi
*fl
, unsigned short family
,
757 struct xfrm_state
**best
, int *acq_in_progress
,
761 * 1. There is a valid state with matching selector. Done.
762 * 2. Valid state with inappropriate selector. Skip.
764 * Entering area of "sysdeps".
766 * 3. If state is not valid, selector is temporary, it selects
767 * only session which triggered previous resolution. Key
768 * manager will do something to install a state with proper
771 if (x
->km
.state
== XFRM_STATE_VALID
) {
772 if ((x
->sel
.family
&&
773 !xfrm_selector_match(&x
->sel
, fl
, x
->sel
.family
)) ||
774 !security_xfrm_state_pol_flow_match(x
, pol
, fl
))
778 (*best
)->km
.dying
> x
->km
.dying
||
779 ((*best
)->km
.dying
== x
->km
.dying
&&
780 (*best
)->curlft
.add_time
< x
->curlft
.add_time
))
782 } else if (x
->km
.state
== XFRM_STATE_ACQ
) {
783 *acq_in_progress
= 1;
784 } else if (x
->km
.state
== XFRM_STATE_ERROR
||
785 x
->km
.state
== XFRM_STATE_EXPIRED
) {
786 if (xfrm_selector_match(&x
->sel
, fl
, x
->sel
.family
) &&
787 security_xfrm_state_pol_flow_match(x
, pol
, fl
))
793 xfrm_state_find(const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
794 const struct flowi
*fl
, struct xfrm_tmpl
*tmpl
,
795 struct xfrm_policy
*pol
, int *err
,
796 unsigned short family
)
798 static xfrm_address_t saddr_wildcard
= { };
799 struct net
*net
= xp_net(pol
);
800 unsigned int h
, h_wildcard
;
801 struct hlist_node
*entry
;
802 struct xfrm_state
*x
, *x0
, *to_put
;
803 int acquire_in_progress
= 0;
805 struct xfrm_state
*best
= NULL
;
806 u32 mark
= pol
->mark
.v
& pol
->mark
.m
;
807 unsigned short encap_family
= tmpl
->encap_family
;
811 spin_lock_bh(&xfrm_state_lock
);
812 h
= xfrm_dst_hash(net
, daddr
, saddr
, tmpl
->reqid
, encap_family
);
813 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
814 if (x
->props
.family
== encap_family
&&
815 x
->props
.reqid
== tmpl
->reqid
&&
816 (mark
& x
->mark
.m
) == x
->mark
.v
&&
817 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
818 xfrm_state_addr_check(x
, daddr
, saddr
, encap_family
) &&
819 tmpl
->mode
== x
->props
.mode
&&
820 tmpl
->id
.proto
== x
->id
.proto
&&
821 (tmpl
->id
.spi
== x
->id
.spi
|| !tmpl
->id
.spi
))
822 xfrm_state_look_at(pol
, x
, fl
, encap_family
,
823 &best
, &acquire_in_progress
, &error
);
828 h_wildcard
= xfrm_dst_hash(net
, daddr
, &saddr_wildcard
, tmpl
->reqid
, encap_family
);
829 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h_wildcard
, bydst
) {
830 if (x
->props
.family
== encap_family
&&
831 x
->props
.reqid
== tmpl
->reqid
&&
832 (mark
& x
->mark
.m
) == x
->mark
.v
&&
833 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
834 xfrm_state_addr_check(x
, daddr
, saddr
, encap_family
) &&
835 tmpl
->mode
== x
->props
.mode
&&
836 tmpl
->id
.proto
== x
->id
.proto
&&
837 (tmpl
->id
.spi
== x
->id
.spi
|| !tmpl
->id
.spi
))
838 xfrm_state_look_at(pol
, x
, fl
, encap_family
,
839 &best
, &acquire_in_progress
, &error
);
844 if (!x
&& !error
&& !acquire_in_progress
) {
846 (x0
= __xfrm_state_lookup(net
, mark
, daddr
, tmpl
->id
.spi
,
847 tmpl
->id
.proto
, encap_family
)) != NULL
) {
852 x
= xfrm_state_alloc(net
);
857 /* Initialize temporary state matching only
858 * to current session. */
859 xfrm_init_tempstate(x
, fl
, tmpl
, daddr
, saddr
, family
);
860 memcpy(&x
->mark
, &pol
->mark
, sizeof(x
->mark
));
862 error
= security_xfrm_state_alloc_acquire(x
, pol
->security
, fl
->flowi_secid
);
864 x
->km
.state
= XFRM_STATE_DEAD
;
870 if (km_query(x
, tmpl
, pol
) == 0) {
871 x
->km
.state
= XFRM_STATE_ACQ
;
872 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
873 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
874 h
= xfrm_src_hash(net
, daddr
, saddr
, encap_family
);
875 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
877 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
, encap_family
);
878 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
880 x
->lft
.hard_add_expires_seconds
= net
->xfrm
.sysctl_acq_expires
;
881 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(net
->xfrm
.sysctl_acq_expires
, 0), HRTIMER_MODE_REL
);
882 net
->xfrm
.state_num
++;
883 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
885 x
->km
.state
= XFRM_STATE_DEAD
;
895 *err
= acquire_in_progress
? -EAGAIN
: error
;
896 spin_unlock_bh(&xfrm_state_lock
);
898 xfrm_state_put(to_put
);
903 xfrm_stateonly_find(struct net
*net
, u32 mark
,
904 xfrm_address_t
*daddr
, xfrm_address_t
*saddr
,
905 unsigned short family
, u8 mode
, u8 proto
, u32 reqid
)
908 struct xfrm_state
*rx
= NULL
, *x
= NULL
;
909 struct hlist_node
*entry
;
911 spin_lock(&xfrm_state_lock
);
912 h
= xfrm_dst_hash(net
, daddr
, saddr
, reqid
, family
);
913 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
914 if (x
->props
.family
== family
&&
915 x
->props
.reqid
== reqid
&&
916 (mark
& x
->mark
.m
) == x
->mark
.v
&&
917 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
918 xfrm_state_addr_check(x
, daddr
, saddr
, family
) &&
919 mode
== x
->props
.mode
&&
920 proto
== x
->id
.proto
&&
921 x
->km
.state
== XFRM_STATE_VALID
) {
929 spin_unlock(&xfrm_state_lock
);
934 EXPORT_SYMBOL(xfrm_stateonly_find
);
936 static void __xfrm_state_insert(struct xfrm_state
*x
)
938 struct net
*net
= xs_net(x
);
941 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
943 h
= xfrm_dst_hash(net
, &x
->id
.daddr
, &x
->props
.saddr
,
944 x
->props
.reqid
, x
->props
.family
);
945 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
947 h
= xfrm_src_hash(net
, &x
->id
.daddr
, &x
->props
.saddr
, x
->props
.family
);
948 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
951 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
,
954 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
957 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(1, 0), HRTIMER_MODE_REL
);
958 if (x
->replay_maxage
)
959 mod_timer(&x
->rtimer
, jiffies
+ x
->replay_maxage
);
961 wake_up(&net
->xfrm
.km_waitq
);
963 net
->xfrm
.state_num
++;
965 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
968 /* xfrm_state_lock is held */
969 static void __xfrm_state_bump_genids(struct xfrm_state
*xnew
)
971 struct net
*net
= xs_net(xnew
);
972 unsigned short family
= xnew
->props
.family
;
973 u32 reqid
= xnew
->props
.reqid
;
974 struct xfrm_state
*x
;
975 struct hlist_node
*entry
;
977 u32 mark
= xnew
->mark
.v
& xnew
->mark
.m
;
979 h
= xfrm_dst_hash(net
, &xnew
->id
.daddr
, &xnew
->props
.saddr
, reqid
, family
);
980 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
981 if (x
->props
.family
== family
&&
982 x
->props
.reqid
== reqid
&&
983 (mark
& x
->mark
.m
) == x
->mark
.v
&&
984 xfrm_addr_equal(&x
->id
.daddr
, &xnew
->id
.daddr
, family
) &&
985 xfrm_addr_equal(&x
->props
.saddr
, &xnew
->props
.saddr
, family
))
990 void xfrm_state_insert(struct xfrm_state
*x
)
992 spin_lock_bh(&xfrm_state_lock
);
993 __xfrm_state_bump_genids(x
);
994 __xfrm_state_insert(x
);
995 spin_unlock_bh(&xfrm_state_lock
);
997 EXPORT_SYMBOL(xfrm_state_insert
);
999 /* xfrm_state_lock is held */
1000 static struct xfrm_state
*__find_acq_core(struct net
*net
, struct xfrm_mark
*m
,
1001 unsigned short family
, u8 mode
,
1002 u32 reqid
, u8 proto
,
1003 const xfrm_address_t
*daddr
,
1004 const xfrm_address_t
*saddr
, int create
)
1006 unsigned int h
= xfrm_dst_hash(net
, daddr
, saddr
, reqid
, family
);
1007 struct hlist_node
*entry
;
1008 struct xfrm_state
*x
;
1009 u32 mark
= m
->v
& m
->m
;
1011 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
1012 if (x
->props
.reqid
!= reqid
||
1013 x
->props
.mode
!= mode
||
1014 x
->props
.family
!= family
||
1015 x
->km
.state
!= XFRM_STATE_ACQ
||
1017 x
->id
.proto
!= proto
||
1018 (mark
& x
->mark
.m
) != x
->mark
.v
||
1019 !xfrm_addr_equal(&x
->id
.daddr
, daddr
, family
) ||
1020 !xfrm_addr_equal(&x
->props
.saddr
, saddr
, family
))
1030 x
= xfrm_state_alloc(net
);
1034 x
->sel
.daddr
.a4
= daddr
->a4
;
1035 x
->sel
.saddr
.a4
= saddr
->a4
;
1036 x
->sel
.prefixlen_d
= 32;
1037 x
->sel
.prefixlen_s
= 32;
1038 x
->props
.saddr
.a4
= saddr
->a4
;
1039 x
->id
.daddr
.a4
= daddr
->a4
;
1043 *(struct in6_addr
*)x
->sel
.daddr
.a6
= *(struct in6_addr
*)daddr
;
1044 *(struct in6_addr
*)x
->sel
.saddr
.a6
= *(struct in6_addr
*)saddr
;
1045 x
->sel
.prefixlen_d
= 128;
1046 x
->sel
.prefixlen_s
= 128;
1047 *(struct in6_addr
*)x
->props
.saddr
.a6
= *(struct in6_addr
*)saddr
;
1048 *(struct in6_addr
*)x
->id
.daddr
.a6
= *(struct in6_addr
*)daddr
;
1052 x
->km
.state
= XFRM_STATE_ACQ
;
1053 x
->id
.proto
= proto
;
1054 x
->props
.family
= family
;
1055 x
->props
.mode
= mode
;
1056 x
->props
.reqid
= reqid
;
1059 x
->lft
.hard_add_expires_seconds
= net
->xfrm
.sysctl_acq_expires
;
1061 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(net
->xfrm
.sysctl_acq_expires
, 0), HRTIMER_MODE_REL
);
1062 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
1063 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
1064 h
= xfrm_src_hash(net
, daddr
, saddr
, family
);
1065 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
1067 net
->xfrm
.state_num
++;
1069 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
1075 static struct xfrm_state
*__xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
);
1077 int xfrm_state_add(struct xfrm_state
*x
)
1079 struct net
*net
= xs_net(x
);
1080 struct xfrm_state
*x1
, *to_put
;
1083 u32 mark
= x
->mark
.v
& x
->mark
.m
;
1084 int use_spi
= xfrm_id_proto_match(x
->id
.proto
, IPSEC_PROTO_ANY
);
1086 family
= x
->props
.family
;
1090 spin_lock_bh(&xfrm_state_lock
);
1092 x1
= __xfrm_state_locate(x
, use_spi
, family
);
1100 if (use_spi
&& x
->km
.seq
) {
1101 x1
= __xfrm_find_acq_byseq(net
, mark
, x
->km
.seq
);
1102 if (x1
&& ((x1
->id
.proto
!= x
->id
.proto
) ||
1103 !xfrm_addr_equal(&x1
->id
.daddr
, &x
->id
.daddr
, family
))) {
1110 x1
= __find_acq_core(net
, &x
->mark
, family
, x
->props
.mode
,
1111 x
->props
.reqid
, x
->id
.proto
,
1112 &x
->id
.daddr
, &x
->props
.saddr
, 0);
1114 __xfrm_state_bump_genids(x
);
1115 __xfrm_state_insert(x
);
1119 spin_unlock_bh(&xfrm_state_lock
);
1122 xfrm_state_delete(x1
);
1127 xfrm_state_put(to_put
);
1131 EXPORT_SYMBOL(xfrm_state_add
);
1133 #ifdef CONFIG_XFRM_MIGRATE
1134 static struct xfrm_state
*xfrm_state_clone(struct xfrm_state
*orig
, int *errp
)
1136 struct net
*net
= xs_net(orig
);
1138 struct xfrm_state
*x
= xfrm_state_alloc(net
);
1142 memcpy(&x
->id
, &orig
->id
, sizeof(x
->id
));
1143 memcpy(&x
->sel
, &orig
->sel
, sizeof(x
->sel
));
1144 memcpy(&x
->lft
, &orig
->lft
, sizeof(x
->lft
));
1145 x
->props
.mode
= orig
->props
.mode
;
1146 x
->props
.replay_window
= orig
->props
.replay_window
;
1147 x
->props
.reqid
= orig
->props
.reqid
;
1148 x
->props
.family
= orig
->props
.family
;
1149 x
->props
.saddr
= orig
->props
.saddr
;
1152 x
->aalg
= xfrm_algo_auth_clone(orig
->aalg
);
1156 x
->props
.aalgo
= orig
->props
.aalgo
;
1159 x
->ealg
= xfrm_algo_clone(orig
->ealg
);
1163 x
->props
.ealgo
= orig
->props
.ealgo
;
1166 x
->calg
= xfrm_algo_clone(orig
->calg
);
1170 x
->props
.calgo
= orig
->props
.calgo
;
1173 x
->encap
= kmemdup(orig
->encap
, sizeof(*x
->encap
), GFP_KERNEL
);
1179 x
->coaddr
= kmemdup(orig
->coaddr
, sizeof(*x
->coaddr
),
1185 if (orig
->replay_esn
) {
1186 err
= xfrm_replay_clone(x
, orig
);
1191 memcpy(&x
->mark
, &orig
->mark
, sizeof(x
->mark
));
1193 err
= xfrm_init_state(x
);
1197 x
->props
.flags
= orig
->props
.flags
;
1199 x
->curlft
.add_time
= orig
->curlft
.add_time
;
1200 x
->km
.state
= orig
->km
.state
;
1201 x
->km
.seq
= orig
->km
.seq
;
1213 /* xfrm_state_lock is held */
1214 struct xfrm_state
* xfrm_migrate_state_find(struct xfrm_migrate
*m
)
1217 struct xfrm_state
*x
;
1218 struct hlist_node
*entry
;
1221 h
= xfrm_dst_hash(&init_net
, &m
->old_daddr
, &m
->old_saddr
,
1222 m
->reqid
, m
->old_family
);
1223 hlist_for_each_entry(x
, entry
, init_net
.xfrm
.state_bydst
+h
, bydst
) {
1224 if (x
->props
.mode
!= m
->mode
||
1225 x
->id
.proto
!= m
->proto
)
1227 if (m
->reqid
&& x
->props
.reqid
!= m
->reqid
)
1229 if (!xfrm_addr_equal(&x
->id
.daddr
, &m
->old_daddr
,
1231 !xfrm_addr_equal(&x
->props
.saddr
, &m
->old_saddr
,
1238 h
= xfrm_src_hash(&init_net
, &m
->old_daddr
, &m
->old_saddr
,
1240 hlist_for_each_entry(x
, entry
, init_net
.xfrm
.state_bysrc
+h
, bysrc
) {
1241 if (x
->props
.mode
!= m
->mode
||
1242 x
->id
.proto
!= m
->proto
)
1244 if (!xfrm_addr_equal(&x
->id
.daddr
, &m
->old_daddr
,
1246 !xfrm_addr_equal(&x
->props
.saddr
, &m
->old_saddr
,
1256 EXPORT_SYMBOL(xfrm_migrate_state_find
);
1258 struct xfrm_state
* xfrm_state_migrate(struct xfrm_state
*x
,
1259 struct xfrm_migrate
*m
)
1261 struct xfrm_state
*xc
;
1264 xc
= xfrm_state_clone(x
, &err
);
1268 memcpy(&xc
->id
.daddr
, &m
->new_daddr
, sizeof(xc
->id
.daddr
));
1269 memcpy(&xc
->props
.saddr
, &m
->new_saddr
, sizeof(xc
->props
.saddr
));
1272 if (xfrm_addr_equal(&x
->id
.daddr
, &m
->new_daddr
, m
->new_family
)) {
1273 /* a care is needed when the destination address of the
1274 state is to be updated as it is a part of triplet */
1275 xfrm_state_insert(xc
);
1277 if ((err
= xfrm_state_add(xc
)) < 0)
1286 EXPORT_SYMBOL(xfrm_state_migrate
);
1289 int xfrm_state_update(struct xfrm_state
*x
)
1291 struct xfrm_state
*x1
, *to_put
;
1293 int use_spi
= xfrm_id_proto_match(x
->id
.proto
, IPSEC_PROTO_ANY
);
1297 spin_lock_bh(&xfrm_state_lock
);
1298 x1
= __xfrm_state_locate(x
, use_spi
, x
->props
.family
);
1304 if (xfrm_state_kern(x1
)) {
1310 if (x1
->km
.state
== XFRM_STATE_ACQ
) {
1311 __xfrm_state_insert(x
);
1317 spin_unlock_bh(&xfrm_state_lock
);
1320 xfrm_state_put(to_put
);
1326 xfrm_state_delete(x1
);
1332 spin_lock_bh(&x1
->lock
);
1333 if (likely(x1
->km
.state
== XFRM_STATE_VALID
)) {
1334 if (x
->encap
&& x1
->encap
)
1335 memcpy(x1
->encap
, x
->encap
, sizeof(*x1
->encap
));
1336 if (x
->coaddr
&& x1
->coaddr
) {
1337 memcpy(x1
->coaddr
, x
->coaddr
, sizeof(*x1
->coaddr
));
1339 if (!use_spi
&& memcmp(&x1
->sel
, &x
->sel
, sizeof(x1
->sel
)))
1340 memcpy(&x1
->sel
, &x
->sel
, sizeof(x1
->sel
));
1341 memcpy(&x1
->lft
, &x
->lft
, sizeof(x1
->lft
));
1344 tasklet_hrtimer_start(&x1
->mtimer
, ktime_set(1, 0), HRTIMER_MODE_REL
);
1345 if (x1
->curlft
.use_time
)
1346 xfrm_state_check_expire(x1
);
1349 x
->km
.state
= XFRM_STATE_DEAD
;
1350 __xfrm_state_put(x
);
1352 spin_unlock_bh(&x1
->lock
);
1358 EXPORT_SYMBOL(xfrm_state_update
);
1360 int xfrm_state_check_expire(struct xfrm_state
*x
)
1362 if (!x
->curlft
.use_time
)
1363 x
->curlft
.use_time
= get_seconds();
1365 if (x
->curlft
.bytes
>= x
->lft
.hard_byte_limit
||
1366 x
->curlft
.packets
>= x
->lft
.hard_packet_limit
) {
1367 x
->km
.state
= XFRM_STATE_EXPIRED
;
1368 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(0,0), HRTIMER_MODE_REL
);
1373 (x
->curlft
.bytes
>= x
->lft
.soft_byte_limit
||
1374 x
->curlft
.packets
>= x
->lft
.soft_packet_limit
)) {
1376 km_state_expired(x
, 0, 0);
1380 EXPORT_SYMBOL(xfrm_state_check_expire
);
1383 xfrm_state_lookup(struct net
*net
, u32 mark
, const xfrm_address_t
*daddr
, __be32 spi
,
1384 u8 proto
, unsigned short family
)
1386 struct xfrm_state
*x
;
1388 spin_lock_bh(&xfrm_state_lock
);
1389 x
= __xfrm_state_lookup(net
, mark
, daddr
, spi
, proto
, family
);
1390 spin_unlock_bh(&xfrm_state_lock
);
1393 EXPORT_SYMBOL(xfrm_state_lookup
);
1396 xfrm_state_lookup_byaddr(struct net
*net
, u32 mark
,
1397 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
1398 u8 proto
, unsigned short family
)
1400 struct xfrm_state
*x
;
1402 spin_lock_bh(&xfrm_state_lock
);
1403 x
= __xfrm_state_lookup_byaddr(net
, mark
, daddr
, saddr
, proto
, family
);
1404 spin_unlock_bh(&xfrm_state_lock
);
1407 EXPORT_SYMBOL(xfrm_state_lookup_byaddr
);
1410 xfrm_find_acq(struct net
*net
, struct xfrm_mark
*mark
, u8 mode
, u32 reqid
, u8 proto
,
1411 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
1412 int create
, unsigned short family
)
1414 struct xfrm_state
*x
;
1416 spin_lock_bh(&xfrm_state_lock
);
1417 x
= __find_acq_core(net
, mark
, family
, mode
, reqid
, proto
, daddr
, saddr
, create
);
1418 spin_unlock_bh(&xfrm_state_lock
);
1422 EXPORT_SYMBOL(xfrm_find_acq
);
1424 #ifdef CONFIG_XFRM_SUB_POLICY
1426 xfrm_tmpl_sort(struct xfrm_tmpl
**dst
, struct xfrm_tmpl
**src
, int n
,
1427 unsigned short family
)
1430 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
1432 return -EAFNOSUPPORT
;
1434 spin_lock_bh(&xfrm_state_lock
);
1435 if (afinfo
->tmpl_sort
)
1436 err
= afinfo
->tmpl_sort(dst
, src
, n
);
1437 spin_unlock_bh(&xfrm_state_lock
);
1438 xfrm_state_put_afinfo(afinfo
);
1441 EXPORT_SYMBOL(xfrm_tmpl_sort
);
1444 xfrm_state_sort(struct xfrm_state
**dst
, struct xfrm_state
**src
, int n
,
1445 unsigned short family
)
1448 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
1450 return -EAFNOSUPPORT
;
1452 spin_lock_bh(&xfrm_state_lock
);
1453 if (afinfo
->state_sort
)
1454 err
= afinfo
->state_sort(dst
, src
, n
);
1455 spin_unlock_bh(&xfrm_state_lock
);
1456 xfrm_state_put_afinfo(afinfo
);
1459 EXPORT_SYMBOL(xfrm_state_sort
);
1462 /* Silly enough, but I'm lazy to build resolution list */
1464 static struct xfrm_state
*__xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
)
1468 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
1469 struct hlist_node
*entry
;
1470 struct xfrm_state
*x
;
1472 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+i
, bydst
) {
1473 if (x
->km
.seq
== seq
&&
1474 (mark
& x
->mark
.m
) == x
->mark
.v
&&
1475 x
->km
.state
== XFRM_STATE_ACQ
) {
1484 struct xfrm_state
*xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
)
1486 struct xfrm_state
*x
;
1488 spin_lock_bh(&xfrm_state_lock
);
1489 x
= __xfrm_find_acq_byseq(net
, mark
, seq
);
1490 spin_unlock_bh(&xfrm_state_lock
);
1493 EXPORT_SYMBOL(xfrm_find_acq_byseq
);
1495 u32
xfrm_get_acqseq(void)
1498 static atomic_t acqseq
;
1501 res
= atomic_inc_return(&acqseq
);
1506 EXPORT_SYMBOL(xfrm_get_acqseq
);
1508 int xfrm_alloc_spi(struct xfrm_state
*x
, u32 low
, u32 high
)
1510 struct net
*net
= xs_net(x
);
1512 struct xfrm_state
*x0
;
1514 __be32 minspi
= htonl(low
);
1515 __be32 maxspi
= htonl(high
);
1516 u32 mark
= x
->mark
.v
& x
->mark
.m
;
1518 spin_lock_bh(&x
->lock
);
1519 if (x
->km
.state
== XFRM_STATE_DEAD
)
1528 if (minspi
== maxspi
) {
1529 x0
= xfrm_state_lookup(net
, mark
, &x
->id
.daddr
, minspi
, x
->id
.proto
, x
->props
.family
);
1537 for (h
=0; h
<high
-low
+1; h
++) {
1538 spi
= low
+ net_random()%(high
-low
+1);
1539 x0
= xfrm_state_lookup(net
, mark
, &x
->id
.daddr
, htonl(spi
), x
->id
.proto
, x
->props
.family
);
1541 x
->id
.spi
= htonl(spi
);
1548 spin_lock_bh(&xfrm_state_lock
);
1549 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
, x
->props
.family
);
1550 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
1551 spin_unlock_bh(&xfrm_state_lock
);
1557 spin_unlock_bh(&x
->lock
);
1561 EXPORT_SYMBOL(xfrm_alloc_spi
);
1563 int xfrm_state_walk(struct net
*net
, struct xfrm_state_walk
*walk
,
1564 int (*func
)(struct xfrm_state
*, int, void*),
1567 struct xfrm_state
*state
;
1568 struct xfrm_state_walk
*x
;
1571 if (walk
->seq
!= 0 && list_empty(&walk
->all
))
1574 spin_lock_bh(&xfrm_state_lock
);
1575 if (list_empty(&walk
->all
))
1576 x
= list_first_entry(&net
->xfrm
.state_all
, struct xfrm_state_walk
, all
);
1578 x
= list_entry(&walk
->all
, struct xfrm_state_walk
, all
);
1579 list_for_each_entry_from(x
, &net
->xfrm
.state_all
, all
) {
1580 if (x
->state
== XFRM_STATE_DEAD
)
1582 state
= container_of(x
, struct xfrm_state
, km
);
1583 if (!xfrm_id_proto_match(state
->id
.proto
, walk
->proto
))
1585 err
= func(state
, walk
->seq
, data
);
1587 list_move_tail(&walk
->all
, &x
->all
);
1592 if (walk
->seq
== 0) {
1596 list_del_init(&walk
->all
);
1598 spin_unlock_bh(&xfrm_state_lock
);
1601 EXPORT_SYMBOL(xfrm_state_walk
);
1603 void xfrm_state_walk_init(struct xfrm_state_walk
*walk
, u8 proto
)
1605 INIT_LIST_HEAD(&walk
->all
);
1606 walk
->proto
= proto
;
1607 walk
->state
= XFRM_STATE_DEAD
;
1610 EXPORT_SYMBOL(xfrm_state_walk_init
);
1612 void xfrm_state_walk_done(struct xfrm_state_walk
*walk
)
1614 if (list_empty(&walk
->all
))
1617 spin_lock_bh(&xfrm_state_lock
);
1618 list_del(&walk
->all
);
1619 spin_unlock_bh(&xfrm_state_lock
);
1621 EXPORT_SYMBOL(xfrm_state_walk_done
);
1623 static void xfrm_replay_timer_handler(unsigned long data
)
1625 struct xfrm_state
*x
= (struct xfrm_state
*)data
;
1627 spin_lock(&x
->lock
);
1629 if (x
->km
.state
== XFRM_STATE_VALID
) {
1630 if (xfrm_aevent_is_on(xs_net(x
)))
1631 x
->repl
->notify(x
, XFRM_REPLAY_TIMEOUT
);
1633 x
->xflags
|= XFRM_TIME_DEFER
;
1636 spin_unlock(&x
->lock
);
1639 static LIST_HEAD(xfrm_km_list
);
1641 void km_policy_notify(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
1643 struct xfrm_mgr
*km
;
1646 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
)
1647 if (km
->notify_policy
)
1648 km
->notify_policy(xp
, dir
, c
);
1652 void km_state_notify(struct xfrm_state
*x
, const struct km_event
*c
)
1654 struct xfrm_mgr
*km
;
1656 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
)
1662 EXPORT_SYMBOL(km_policy_notify
);
1663 EXPORT_SYMBOL(km_state_notify
);
1665 void km_state_expired(struct xfrm_state
*x
, int hard
, u32 portid
)
1667 struct net
*net
= xs_net(x
);
1672 c
.event
= XFRM_MSG_EXPIRE
;
1673 km_state_notify(x
, &c
);
1676 wake_up(&net
->xfrm
.km_waitq
);
1679 EXPORT_SYMBOL(km_state_expired
);
1681 * We send to all registered managers regardless of failure
1682 * We are happy with one success
1684 int km_query(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*pol
)
1686 int err
= -EINVAL
, acqret
;
1687 struct xfrm_mgr
*km
;
1690 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1691 acqret
= km
->acquire(x
, t
, pol
);
1698 EXPORT_SYMBOL(km_query
);
1700 int km_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
1703 struct xfrm_mgr
*km
;
1706 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1707 if (km
->new_mapping
)
1708 err
= km
->new_mapping(x
, ipaddr
, sport
);
1715 EXPORT_SYMBOL(km_new_mapping
);
1717 void km_policy_expired(struct xfrm_policy
*pol
, int dir
, int hard
, u32 portid
)
1719 struct net
*net
= xp_net(pol
);
1724 c
.event
= XFRM_MSG_POLEXPIRE
;
1725 km_policy_notify(pol
, dir
, &c
);
1728 wake_up(&net
->xfrm
.km_waitq
);
1730 EXPORT_SYMBOL(km_policy_expired
);
1732 #ifdef CONFIG_XFRM_MIGRATE
1733 int km_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
1734 const struct xfrm_migrate
*m
, int num_migrate
,
1735 const struct xfrm_kmaddress
*k
)
1739 struct xfrm_mgr
*km
;
1742 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1744 ret
= km
->migrate(sel
, dir
, type
, m
, num_migrate
, k
);
1752 EXPORT_SYMBOL(km_migrate
);
1755 int km_report(struct net
*net
, u8 proto
, struct xfrm_selector
*sel
, xfrm_address_t
*addr
)
1759 struct xfrm_mgr
*km
;
1762 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1764 ret
= km
->report(net
, proto
, sel
, addr
);
1772 EXPORT_SYMBOL(km_report
);
1774 int xfrm_user_policy(struct sock
*sk
, int optname
, u8 __user
*optval
, int optlen
)
1778 struct xfrm_mgr
*km
;
1779 struct xfrm_policy
*pol
= NULL
;
1781 if (optlen
<= 0 || optlen
> PAGE_SIZE
)
1784 data
= kmalloc(optlen
, GFP_KERNEL
);
1789 if (copy_from_user(data
, optval
, optlen
))
1794 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1795 pol
= km
->compile_policy(sk
, optname
, data
,
1803 xfrm_sk_policy_insert(sk
, err
, pol
);
1812 EXPORT_SYMBOL(xfrm_user_policy
);
1814 static DEFINE_SPINLOCK(xfrm_km_lock
);
1816 int xfrm_register_km(struct xfrm_mgr
*km
)
1818 spin_lock_bh(&xfrm_km_lock
);
1819 list_add_tail_rcu(&km
->list
, &xfrm_km_list
);
1820 spin_unlock_bh(&xfrm_km_lock
);
1823 EXPORT_SYMBOL(xfrm_register_km
);
1825 int xfrm_unregister_km(struct xfrm_mgr
*km
)
1827 spin_lock_bh(&xfrm_km_lock
);
1828 list_del_rcu(&km
->list
);
1829 spin_unlock_bh(&xfrm_km_lock
);
1833 EXPORT_SYMBOL(xfrm_unregister_km
);
1835 int xfrm_state_register_afinfo(struct xfrm_state_afinfo
*afinfo
)
1838 if (unlikely(afinfo
== NULL
))
1840 if (unlikely(afinfo
->family
>= NPROTO
))
1841 return -EAFNOSUPPORT
;
1842 spin_lock_bh(&xfrm_state_afinfo_lock
);
1843 if (unlikely(xfrm_state_afinfo
[afinfo
->family
] != NULL
))
1846 rcu_assign_pointer(xfrm_state_afinfo
[afinfo
->family
], afinfo
);
1847 spin_unlock_bh(&xfrm_state_afinfo_lock
);
1850 EXPORT_SYMBOL(xfrm_state_register_afinfo
);
1852 int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo
*afinfo
)
1855 if (unlikely(afinfo
== NULL
))
1857 if (unlikely(afinfo
->family
>= NPROTO
))
1858 return -EAFNOSUPPORT
;
1859 spin_lock_bh(&xfrm_state_afinfo_lock
);
1860 if (likely(xfrm_state_afinfo
[afinfo
->family
] != NULL
)) {
1861 if (unlikely(xfrm_state_afinfo
[afinfo
->family
] != afinfo
))
1864 RCU_INIT_POINTER(xfrm_state_afinfo
[afinfo
->family
], NULL
);
1866 spin_unlock_bh(&xfrm_state_afinfo_lock
);
1870 EXPORT_SYMBOL(xfrm_state_unregister_afinfo
);
1872 static struct xfrm_state_afinfo
*xfrm_state_get_afinfo(unsigned int family
)
1874 struct xfrm_state_afinfo
*afinfo
;
1875 if (unlikely(family
>= NPROTO
))
1878 afinfo
= rcu_dereference(xfrm_state_afinfo
[family
]);
1879 if (unlikely(!afinfo
))
1884 static void xfrm_state_put_afinfo(struct xfrm_state_afinfo
*afinfo
)
1889 /* Temporarily located here until net/xfrm/xfrm_tunnel.c is created */
1890 void xfrm_state_delete_tunnel(struct xfrm_state
*x
)
1893 struct xfrm_state
*t
= x
->tunnel
;
1895 if (atomic_read(&t
->tunnel_users
) == 2)
1896 xfrm_state_delete(t
);
1897 atomic_dec(&t
->tunnel_users
);
1902 EXPORT_SYMBOL(xfrm_state_delete_tunnel
);
1904 int xfrm_state_mtu(struct xfrm_state
*x
, int mtu
)
1908 spin_lock_bh(&x
->lock
);
1909 if (x
->km
.state
== XFRM_STATE_VALID
&&
1910 x
->type
&& x
->type
->get_mtu
)
1911 res
= x
->type
->get_mtu(x
, mtu
);
1913 res
= mtu
- x
->props
.header_len
;
1914 spin_unlock_bh(&x
->lock
);
1918 int __xfrm_init_state(struct xfrm_state
*x
, bool init_replay
)
1920 struct xfrm_state_afinfo
*afinfo
;
1921 struct xfrm_mode
*inner_mode
;
1922 int family
= x
->props
.family
;
1925 err
= -EAFNOSUPPORT
;
1926 afinfo
= xfrm_state_get_afinfo(family
);
1931 if (afinfo
->init_flags
)
1932 err
= afinfo
->init_flags(x
);
1934 xfrm_state_put_afinfo(afinfo
);
1939 err
= -EPROTONOSUPPORT
;
1941 if (x
->sel
.family
!= AF_UNSPEC
) {
1942 inner_mode
= xfrm_get_mode(x
->props
.mode
, x
->sel
.family
);
1943 if (inner_mode
== NULL
)
1946 if (!(inner_mode
->flags
& XFRM_MODE_FLAG_TUNNEL
) &&
1947 family
!= x
->sel
.family
) {
1948 xfrm_put_mode(inner_mode
);
1952 x
->inner_mode
= inner_mode
;
1954 struct xfrm_mode
*inner_mode_iaf
;
1955 int iafamily
= AF_INET
;
1957 inner_mode
= xfrm_get_mode(x
->props
.mode
, x
->props
.family
);
1958 if (inner_mode
== NULL
)
1961 if (!(inner_mode
->flags
& XFRM_MODE_FLAG_TUNNEL
)) {
1962 xfrm_put_mode(inner_mode
);
1965 x
->inner_mode
= inner_mode
;
1967 if (x
->props
.family
== AF_INET
)
1968 iafamily
= AF_INET6
;
1970 inner_mode_iaf
= xfrm_get_mode(x
->props
.mode
, iafamily
);
1971 if (inner_mode_iaf
) {
1972 if (inner_mode_iaf
->flags
& XFRM_MODE_FLAG_TUNNEL
)
1973 x
->inner_mode_iaf
= inner_mode_iaf
;
1975 xfrm_put_mode(inner_mode_iaf
);
1979 x
->type
= xfrm_get_type(x
->id
.proto
, family
);
1980 if (x
->type
== NULL
)
1983 err
= x
->type
->init_state(x
);
1987 x
->outer_mode
= xfrm_get_mode(x
->props
.mode
, family
);
1988 if (x
->outer_mode
== NULL
) {
1989 err
= -EPROTONOSUPPORT
;
1994 err
= xfrm_init_replay(x
);
1999 x
->km
.state
= XFRM_STATE_VALID
;
2005 EXPORT_SYMBOL(__xfrm_init_state
);
2007 int xfrm_init_state(struct xfrm_state
*x
)
2009 return __xfrm_init_state(x
, true);
2012 EXPORT_SYMBOL(xfrm_init_state
);
2014 int __net_init
xfrm_state_init(struct net
*net
)
2018 INIT_LIST_HEAD(&net
->xfrm
.state_all
);
2020 sz
= sizeof(struct hlist_head
) * 8;
2022 net
->xfrm
.state_bydst
= xfrm_hash_alloc(sz
);
2023 if (!net
->xfrm
.state_bydst
)
2025 net
->xfrm
.state_bysrc
= xfrm_hash_alloc(sz
);
2026 if (!net
->xfrm
.state_bysrc
)
2028 net
->xfrm
.state_byspi
= xfrm_hash_alloc(sz
);
2029 if (!net
->xfrm
.state_byspi
)
2031 net
->xfrm
.state_hmask
= ((sz
/ sizeof(struct hlist_head
)) - 1);
2033 net
->xfrm
.state_num
= 0;
2034 INIT_WORK(&net
->xfrm
.state_hash_work
, xfrm_hash_resize
);
2035 INIT_HLIST_HEAD(&net
->xfrm
.state_gc_list
);
2036 INIT_WORK(&net
->xfrm
.state_gc_work
, xfrm_state_gc_task
);
2037 init_waitqueue_head(&net
->xfrm
.km_waitq
);
2041 xfrm_hash_free(net
->xfrm
.state_bysrc
, sz
);
2043 xfrm_hash_free(net
->xfrm
.state_bydst
, sz
);
2048 void xfrm_state_fini(struct net
*net
)
2050 struct xfrm_audit audit_info
;
2053 flush_work(&net
->xfrm
.state_hash_work
);
2054 audit_info
.loginuid
= INVALID_UID
;
2055 audit_info
.sessionid
= -1;
2056 audit_info
.secid
= 0;
2057 xfrm_state_flush(net
, IPSEC_PROTO_ANY
, &audit_info
);
2058 flush_work(&net
->xfrm
.state_gc_work
);
2060 WARN_ON(!list_empty(&net
->xfrm
.state_all
));
2062 sz
= (net
->xfrm
.state_hmask
+ 1) * sizeof(struct hlist_head
);
2063 WARN_ON(!hlist_empty(net
->xfrm
.state_byspi
));
2064 xfrm_hash_free(net
->xfrm
.state_byspi
, sz
);
2065 WARN_ON(!hlist_empty(net
->xfrm
.state_bysrc
));
2066 xfrm_hash_free(net
->xfrm
.state_bysrc
, sz
);
2067 WARN_ON(!hlist_empty(net
->xfrm
.state_bydst
));
2068 xfrm_hash_free(net
->xfrm
.state_bydst
, sz
);
2071 #ifdef CONFIG_AUDITSYSCALL
2072 static void xfrm_audit_helper_sainfo(struct xfrm_state
*x
,
2073 struct audit_buffer
*audit_buf
)
2075 struct xfrm_sec_ctx
*ctx
= x
->security
;
2076 u32 spi
= ntohl(x
->id
.spi
);
2079 audit_log_format(audit_buf
, " sec_alg=%u sec_doi=%u sec_obj=%s",
2080 ctx
->ctx_alg
, ctx
->ctx_doi
, ctx
->ctx_str
);
2082 switch(x
->props
.family
) {
2084 audit_log_format(audit_buf
, " src=%pI4 dst=%pI4",
2085 &x
->props
.saddr
.a4
, &x
->id
.daddr
.a4
);
2088 audit_log_format(audit_buf
, " src=%pI6 dst=%pI6",
2089 x
->props
.saddr
.a6
, x
->id
.daddr
.a6
);
2093 audit_log_format(audit_buf
, " spi=%u(0x%x)", spi
, spi
);
2096 static void xfrm_audit_helper_pktinfo(struct sk_buff
*skb
, u16 family
,
2097 struct audit_buffer
*audit_buf
)
2099 const struct iphdr
*iph4
;
2100 const struct ipv6hdr
*iph6
;
2105 audit_log_format(audit_buf
, " src=%pI4 dst=%pI4",
2106 &iph4
->saddr
, &iph4
->daddr
);
2109 iph6
= ipv6_hdr(skb
);
2110 audit_log_format(audit_buf
,
2111 " src=%pI6 dst=%pI6 flowlbl=0x%x%02x%02x",
2112 &iph6
->saddr
,&iph6
->daddr
,
2113 iph6
->flow_lbl
[0] & 0x0f,
2120 void xfrm_audit_state_add(struct xfrm_state
*x
, int result
,
2121 kuid_t auid
, u32 sessionid
, u32 secid
)
2123 struct audit_buffer
*audit_buf
;
2125 audit_buf
= xfrm_audit_start("SAD-add");
2126 if (audit_buf
== NULL
)
2128 xfrm_audit_helper_usrinfo(auid
, sessionid
, secid
, audit_buf
);
2129 xfrm_audit_helper_sainfo(x
, audit_buf
);
2130 audit_log_format(audit_buf
, " res=%u", result
);
2131 audit_log_end(audit_buf
);
2133 EXPORT_SYMBOL_GPL(xfrm_audit_state_add
);
2135 void xfrm_audit_state_delete(struct xfrm_state
*x
, int result
,
2136 kuid_t auid
, u32 sessionid
, u32 secid
)
2138 struct audit_buffer
*audit_buf
;
2140 audit_buf
= xfrm_audit_start("SAD-delete");
2141 if (audit_buf
== NULL
)
2143 xfrm_audit_helper_usrinfo(auid
, sessionid
, secid
, audit_buf
);
2144 xfrm_audit_helper_sainfo(x
, audit_buf
);
2145 audit_log_format(audit_buf
, " res=%u", result
);
2146 audit_log_end(audit_buf
);
2148 EXPORT_SYMBOL_GPL(xfrm_audit_state_delete
);
2150 void xfrm_audit_state_replay_overflow(struct xfrm_state
*x
,
2151 struct sk_buff
*skb
)
2153 struct audit_buffer
*audit_buf
;
2156 audit_buf
= xfrm_audit_start("SA-replay-overflow");
2157 if (audit_buf
== NULL
)
2159 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2160 /* don't record the sequence number because it's inherent in this kind
2161 * of audit message */
2162 spi
= ntohl(x
->id
.spi
);
2163 audit_log_format(audit_buf
, " spi=%u(0x%x)", spi
, spi
);
2164 audit_log_end(audit_buf
);
2166 EXPORT_SYMBOL_GPL(xfrm_audit_state_replay_overflow
);
2168 void xfrm_audit_state_replay(struct xfrm_state
*x
,
2169 struct sk_buff
*skb
, __be32 net_seq
)
2171 struct audit_buffer
*audit_buf
;
2174 audit_buf
= xfrm_audit_start("SA-replayed-pkt");
2175 if (audit_buf
== NULL
)
2177 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2178 spi
= ntohl(x
->id
.spi
);
2179 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2180 spi
, spi
, ntohl(net_seq
));
2181 audit_log_end(audit_buf
);
2183 EXPORT_SYMBOL_GPL(xfrm_audit_state_replay
);
2185 void xfrm_audit_state_notfound_simple(struct sk_buff
*skb
, u16 family
)
2187 struct audit_buffer
*audit_buf
;
2189 audit_buf
= xfrm_audit_start("SA-notfound");
2190 if (audit_buf
== NULL
)
2192 xfrm_audit_helper_pktinfo(skb
, family
, audit_buf
);
2193 audit_log_end(audit_buf
);
2195 EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound_simple
);
2197 void xfrm_audit_state_notfound(struct sk_buff
*skb
, u16 family
,
2198 __be32 net_spi
, __be32 net_seq
)
2200 struct audit_buffer
*audit_buf
;
2203 audit_buf
= xfrm_audit_start("SA-notfound");
2204 if (audit_buf
== NULL
)
2206 xfrm_audit_helper_pktinfo(skb
, family
, audit_buf
);
2207 spi
= ntohl(net_spi
);
2208 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2209 spi
, spi
, ntohl(net_seq
));
2210 audit_log_end(audit_buf
);
2212 EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound
);
2214 void xfrm_audit_state_icvfail(struct xfrm_state
*x
,
2215 struct sk_buff
*skb
, u8 proto
)
2217 struct audit_buffer
*audit_buf
;
2221 audit_buf
= xfrm_audit_start("SA-icv-failure");
2222 if (audit_buf
== NULL
)
2224 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2225 if (xfrm_parse_spi(skb
, proto
, &net_spi
, &net_seq
) == 0) {
2226 u32 spi
= ntohl(net_spi
);
2227 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2228 spi
, spi
, ntohl(net_seq
));
2230 audit_log_end(audit_buf
);
2232 EXPORT_SYMBOL_GPL(xfrm_audit_state_icvfail
);
2233 #endif /* CONFIG_AUDITSYSCALL */