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_RWLOCK(xfrm_state_afinfo_lock
);
162 static struct xfrm_state_afinfo
*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 pid
);
171 static struct xfrm_state_afinfo
*xfrm_state_lock_afinfo(unsigned int family
)
173 struct xfrm_state_afinfo
*afinfo
;
174 if (unlikely(family
>= NPROTO
))
176 write_lock_bh(&xfrm_state_afinfo_lock
);
177 afinfo
= xfrm_state_afinfo
[family
];
178 if (unlikely(!afinfo
))
179 write_unlock_bh(&xfrm_state_afinfo_lock
);
183 static void xfrm_state_unlock_afinfo(struct xfrm_state_afinfo
*afinfo
)
184 __releases(xfrm_state_afinfo_lock
)
186 write_unlock_bh(&xfrm_state_afinfo_lock
);
189 int xfrm_register_type(const struct xfrm_type
*type
, unsigned short family
)
191 struct xfrm_state_afinfo
*afinfo
= xfrm_state_lock_afinfo(family
);
192 const struct xfrm_type
**typemap
;
195 if (unlikely(afinfo
== NULL
))
196 return -EAFNOSUPPORT
;
197 typemap
= afinfo
->type_map
;
199 if (likely(typemap
[type
->proto
] == NULL
))
200 typemap
[type
->proto
] = type
;
203 xfrm_state_unlock_afinfo(afinfo
);
206 EXPORT_SYMBOL(xfrm_register_type
);
208 int xfrm_unregister_type(const struct xfrm_type
*type
, unsigned short family
)
210 struct xfrm_state_afinfo
*afinfo
= xfrm_state_lock_afinfo(family
);
211 const struct xfrm_type
**typemap
;
214 if (unlikely(afinfo
== NULL
))
215 return -EAFNOSUPPORT
;
216 typemap
= afinfo
->type_map
;
218 if (unlikely(typemap
[type
->proto
] != type
))
221 typemap
[type
->proto
] = NULL
;
222 xfrm_state_unlock_afinfo(afinfo
);
225 EXPORT_SYMBOL(xfrm_unregister_type
);
227 static const struct xfrm_type
*xfrm_get_type(u8 proto
, unsigned short family
)
229 struct xfrm_state_afinfo
*afinfo
;
230 const struct xfrm_type
**typemap
;
231 const struct xfrm_type
*type
;
232 int modload_attempted
= 0;
235 afinfo
= xfrm_state_get_afinfo(family
);
236 if (unlikely(afinfo
== NULL
))
238 typemap
= afinfo
->type_map
;
240 type
= typemap
[proto
];
241 if (unlikely(type
&& !try_module_get(type
->owner
)))
243 if (!type
&& !modload_attempted
) {
244 xfrm_state_put_afinfo(afinfo
);
245 request_module("xfrm-type-%d-%d", family
, proto
);
246 modload_attempted
= 1;
250 xfrm_state_put_afinfo(afinfo
);
254 static void xfrm_put_type(const struct xfrm_type
*type
)
256 module_put(type
->owner
);
259 int xfrm_register_mode(struct xfrm_mode
*mode
, int family
)
261 struct xfrm_state_afinfo
*afinfo
;
262 struct xfrm_mode
**modemap
;
265 if (unlikely(mode
->encap
>= XFRM_MODE_MAX
))
268 afinfo
= xfrm_state_lock_afinfo(family
);
269 if (unlikely(afinfo
== NULL
))
270 return -EAFNOSUPPORT
;
273 modemap
= afinfo
->mode_map
;
274 if (modemap
[mode
->encap
])
278 if (!try_module_get(afinfo
->owner
))
281 mode
->afinfo
= afinfo
;
282 modemap
[mode
->encap
] = mode
;
286 xfrm_state_unlock_afinfo(afinfo
);
289 EXPORT_SYMBOL(xfrm_register_mode
);
291 int xfrm_unregister_mode(struct xfrm_mode
*mode
, int family
)
293 struct xfrm_state_afinfo
*afinfo
;
294 struct xfrm_mode
**modemap
;
297 if (unlikely(mode
->encap
>= XFRM_MODE_MAX
))
300 afinfo
= xfrm_state_lock_afinfo(family
);
301 if (unlikely(afinfo
== NULL
))
302 return -EAFNOSUPPORT
;
305 modemap
= afinfo
->mode_map
;
306 if (likely(modemap
[mode
->encap
] == mode
)) {
307 modemap
[mode
->encap
] = NULL
;
308 module_put(mode
->afinfo
->owner
);
312 xfrm_state_unlock_afinfo(afinfo
);
315 EXPORT_SYMBOL(xfrm_unregister_mode
);
317 static struct xfrm_mode
*xfrm_get_mode(unsigned int encap
, int family
)
319 struct xfrm_state_afinfo
*afinfo
;
320 struct xfrm_mode
*mode
;
321 int modload_attempted
= 0;
323 if (unlikely(encap
>= XFRM_MODE_MAX
))
327 afinfo
= xfrm_state_get_afinfo(family
);
328 if (unlikely(afinfo
== NULL
))
331 mode
= afinfo
->mode_map
[encap
];
332 if (unlikely(mode
&& !try_module_get(mode
->owner
)))
334 if (!mode
&& !modload_attempted
) {
335 xfrm_state_put_afinfo(afinfo
);
336 request_module("xfrm-mode-%d-%d", family
, encap
);
337 modload_attempted
= 1;
341 xfrm_state_put_afinfo(afinfo
);
345 static void xfrm_put_mode(struct xfrm_mode
*mode
)
347 module_put(mode
->owner
);
350 static void xfrm_state_gc_destroy(struct xfrm_state
*x
)
352 tasklet_hrtimer_cancel(&x
->mtimer
);
353 del_timer_sync(&x
->rtimer
);
359 kfree(x
->replay_esn
);
360 kfree(x
->preplay_esn
);
362 xfrm_put_mode(x
->inner_mode
);
363 if (x
->inner_mode_iaf
)
364 xfrm_put_mode(x
->inner_mode_iaf
);
366 xfrm_put_mode(x
->outer_mode
);
368 x
->type
->destructor(x
);
369 xfrm_put_type(x
->type
);
371 security_xfrm_state_free(x
);
375 static void xfrm_state_gc_task(struct work_struct
*work
)
377 struct net
*net
= container_of(work
, struct net
, xfrm
.state_gc_work
);
378 struct xfrm_state
*x
;
379 struct hlist_node
*entry
, *tmp
;
380 struct hlist_head gc_list
;
382 spin_lock_bh(&xfrm_state_gc_lock
);
383 hlist_move_list(&net
->xfrm
.state_gc_list
, &gc_list
);
384 spin_unlock_bh(&xfrm_state_gc_lock
);
386 hlist_for_each_entry_safe(x
, entry
, tmp
, &gc_list
, gclist
)
387 xfrm_state_gc_destroy(x
);
389 wake_up(&net
->xfrm
.km_waitq
);
392 static inline unsigned long make_jiffies(long secs
)
394 if (secs
>= (MAX_SCHEDULE_TIMEOUT
-1)/HZ
)
395 return MAX_SCHEDULE_TIMEOUT
-1;
400 static enum hrtimer_restart
xfrm_timer_handler(struct hrtimer
* me
)
402 struct tasklet_hrtimer
*thr
= container_of(me
, struct tasklet_hrtimer
, timer
);
403 struct xfrm_state
*x
= container_of(thr
, struct xfrm_state
, mtimer
);
404 struct net
*net
= xs_net(x
);
405 unsigned long now
= get_seconds();
406 long next
= LONG_MAX
;
411 if (x
->km
.state
== XFRM_STATE_DEAD
)
413 if (x
->km
.state
== XFRM_STATE_EXPIRED
)
415 if (x
->lft
.hard_add_expires_seconds
) {
416 long tmo
= x
->lft
.hard_add_expires_seconds
+
417 x
->curlft
.add_time
- now
;
423 if (x
->lft
.hard_use_expires_seconds
) {
424 long tmo
= x
->lft
.hard_use_expires_seconds
+
425 (x
->curlft
.use_time
? : now
) - now
;
433 if (x
->lft
.soft_add_expires_seconds
) {
434 long tmo
= x
->lft
.soft_add_expires_seconds
+
435 x
->curlft
.add_time
- now
;
441 if (x
->lft
.soft_use_expires_seconds
) {
442 long tmo
= x
->lft
.soft_use_expires_seconds
+
443 (x
->curlft
.use_time
? : now
) - now
;
452 km_state_expired(x
, 0, 0);
454 if (next
!= LONG_MAX
){
455 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(next
, 0), HRTIMER_MODE_REL
);
461 if (x
->km
.state
== XFRM_STATE_ACQ
&& x
->id
.spi
== 0) {
462 x
->km
.state
= XFRM_STATE_EXPIRED
;
463 wake_up(&net
->xfrm
.km_waitq
);
468 err
= __xfrm_state_delete(x
);
469 if (!err
&& x
->id
.spi
)
470 km_state_expired(x
, 1, 0);
472 xfrm_audit_state_delete(x
, err
? 0 : 1,
473 audit_get_loginuid(current
),
474 audit_get_sessionid(current
), 0);
477 spin_unlock(&x
->lock
);
478 return HRTIMER_NORESTART
;
481 static void xfrm_replay_timer_handler(unsigned long data
);
483 struct xfrm_state
*xfrm_state_alloc(struct net
*net
)
485 struct xfrm_state
*x
;
487 x
= kzalloc(sizeof(struct xfrm_state
), GFP_ATOMIC
);
490 write_pnet(&x
->xs_net
, net
);
491 atomic_set(&x
->refcnt
, 1);
492 atomic_set(&x
->tunnel_users
, 0);
493 INIT_LIST_HEAD(&x
->km
.all
);
494 INIT_HLIST_NODE(&x
->bydst
);
495 INIT_HLIST_NODE(&x
->bysrc
);
496 INIT_HLIST_NODE(&x
->byspi
);
497 tasklet_hrtimer_init(&x
->mtimer
, xfrm_timer_handler
, CLOCK_REALTIME
, HRTIMER_MODE_ABS
);
498 setup_timer(&x
->rtimer
, xfrm_replay_timer_handler
,
500 x
->curlft
.add_time
= get_seconds();
501 x
->lft
.soft_byte_limit
= XFRM_INF
;
502 x
->lft
.soft_packet_limit
= XFRM_INF
;
503 x
->lft
.hard_byte_limit
= XFRM_INF
;
504 x
->lft
.hard_packet_limit
= XFRM_INF
;
505 x
->replay_maxage
= 0;
506 x
->replay_maxdiff
= 0;
507 x
->inner_mode
= NULL
;
508 x
->inner_mode_iaf
= NULL
;
509 spin_lock_init(&x
->lock
);
513 EXPORT_SYMBOL(xfrm_state_alloc
);
515 void __xfrm_state_destroy(struct xfrm_state
*x
)
517 struct net
*net
= xs_net(x
);
519 WARN_ON(x
->km
.state
!= XFRM_STATE_DEAD
);
521 spin_lock_bh(&xfrm_state_gc_lock
);
522 hlist_add_head(&x
->gclist
, &net
->xfrm
.state_gc_list
);
523 spin_unlock_bh(&xfrm_state_gc_lock
);
524 schedule_work(&net
->xfrm
.state_gc_work
);
526 EXPORT_SYMBOL(__xfrm_state_destroy
);
528 int __xfrm_state_delete(struct xfrm_state
*x
)
530 struct net
*net
= xs_net(x
);
533 if (x
->km
.state
!= XFRM_STATE_DEAD
) {
534 x
->km
.state
= XFRM_STATE_DEAD
;
535 spin_lock(&xfrm_state_lock
);
536 list_del(&x
->km
.all
);
537 hlist_del(&x
->bydst
);
538 hlist_del(&x
->bysrc
);
540 hlist_del(&x
->byspi
);
541 net
->xfrm
.state_num
--;
542 spin_unlock(&xfrm_state_lock
);
544 /* All xfrm_state objects are created by xfrm_state_alloc.
545 * The xfrm_state_alloc call gives a reference, and that
546 * is what we are dropping here.
554 EXPORT_SYMBOL(__xfrm_state_delete
);
556 int xfrm_state_delete(struct xfrm_state
*x
)
560 spin_lock_bh(&x
->lock
);
561 err
= __xfrm_state_delete(x
);
562 spin_unlock_bh(&x
->lock
);
566 EXPORT_SYMBOL(xfrm_state_delete
);
568 #ifdef CONFIG_SECURITY_NETWORK_XFRM
570 xfrm_state_flush_secctx_check(struct net
*net
, u8 proto
, struct xfrm_audit
*audit_info
)
574 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
575 struct hlist_node
*entry
;
576 struct xfrm_state
*x
;
578 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+i
, bydst
) {
579 if (xfrm_id_proto_match(x
->id
.proto
, proto
) &&
580 (err
= security_xfrm_state_delete(x
)) != 0) {
581 xfrm_audit_state_delete(x
, 0,
582 audit_info
->loginuid
,
583 audit_info
->sessionid
,
594 xfrm_state_flush_secctx_check(struct net
*net
, u8 proto
, struct xfrm_audit
*audit_info
)
600 int xfrm_state_flush(struct net
*net
, u8 proto
, struct xfrm_audit
*audit_info
)
602 int i
, err
= 0, cnt
= 0;
604 spin_lock_bh(&xfrm_state_lock
);
605 err
= xfrm_state_flush_secctx_check(net
, proto
, audit_info
);
610 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
611 struct hlist_node
*entry
;
612 struct xfrm_state
*x
;
614 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+i
, bydst
) {
615 if (!xfrm_state_kern(x
) &&
616 xfrm_id_proto_match(x
->id
.proto
, proto
)) {
618 spin_unlock_bh(&xfrm_state_lock
);
620 err
= xfrm_state_delete(x
);
621 xfrm_audit_state_delete(x
, err
? 0 : 1,
622 audit_info
->loginuid
,
623 audit_info
->sessionid
,
629 spin_lock_bh(&xfrm_state_lock
);
638 spin_unlock_bh(&xfrm_state_lock
);
639 wake_up(&net
->xfrm
.km_waitq
);
642 EXPORT_SYMBOL(xfrm_state_flush
);
644 void xfrm_sad_getinfo(struct net
*net
, struct xfrmk_sadinfo
*si
)
646 spin_lock_bh(&xfrm_state_lock
);
647 si
->sadcnt
= net
->xfrm
.state_num
;
648 si
->sadhcnt
= net
->xfrm
.state_hmask
;
649 si
->sadhmcnt
= xfrm_state_hashmax
;
650 spin_unlock_bh(&xfrm_state_lock
);
652 EXPORT_SYMBOL(xfrm_sad_getinfo
);
655 xfrm_init_tempstate(struct xfrm_state
*x
, const struct flowi
*fl
,
656 const struct xfrm_tmpl
*tmpl
,
657 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
658 unsigned short family
)
660 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
663 afinfo
->init_tempsel(&x
->sel
, fl
);
665 if (family
!= tmpl
->encap_family
) {
666 xfrm_state_put_afinfo(afinfo
);
667 afinfo
= xfrm_state_get_afinfo(tmpl
->encap_family
);
671 afinfo
->init_temprop(x
, tmpl
, daddr
, saddr
);
672 xfrm_state_put_afinfo(afinfo
);
676 static struct xfrm_state
*__xfrm_state_lookup(struct net
*net
, u32 mark
,
677 const xfrm_address_t
*daddr
,
678 __be32 spi
, u8 proto
,
679 unsigned short family
)
681 unsigned int h
= xfrm_spi_hash(net
, daddr
, spi
, proto
, family
);
682 struct xfrm_state
*x
;
683 struct hlist_node
*entry
;
685 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_byspi
+h
, byspi
) {
686 if (x
->props
.family
!= family
||
688 x
->id
.proto
!= proto
||
689 xfrm_addr_cmp(&x
->id
.daddr
, daddr
, family
))
692 if ((mark
& x
->mark
.m
) != x
->mark
.v
)
701 static struct xfrm_state
*__xfrm_state_lookup_byaddr(struct net
*net
, u32 mark
,
702 const xfrm_address_t
*daddr
,
703 const xfrm_address_t
*saddr
,
704 u8 proto
, unsigned short family
)
706 unsigned int h
= xfrm_src_hash(net
, daddr
, saddr
, family
);
707 struct xfrm_state
*x
;
708 struct hlist_node
*entry
;
710 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bysrc
+h
, bysrc
) {
711 if (x
->props
.family
!= family
||
712 x
->id
.proto
!= proto
||
713 xfrm_addr_cmp(&x
->id
.daddr
, daddr
, family
) ||
714 xfrm_addr_cmp(&x
->props
.saddr
, saddr
, family
))
717 if ((mark
& x
->mark
.m
) != x
->mark
.v
)
726 static inline struct xfrm_state
*
727 __xfrm_state_locate(struct xfrm_state
*x
, int use_spi
, int family
)
729 struct net
*net
= xs_net(x
);
730 u32 mark
= x
->mark
.v
& x
->mark
.m
;
733 return __xfrm_state_lookup(net
, mark
, &x
->id
.daddr
,
734 x
->id
.spi
, x
->id
.proto
, family
);
736 return __xfrm_state_lookup_byaddr(net
, mark
,
739 x
->id
.proto
, family
);
742 static void xfrm_hash_grow_check(struct net
*net
, int have_hash_collision
)
744 if (have_hash_collision
&&
745 (net
->xfrm
.state_hmask
+ 1) < xfrm_state_hashmax
&&
746 net
->xfrm
.state_num
> net
->xfrm
.state_hmask
)
747 schedule_work(&net
->xfrm
.state_hash_work
);
750 static void xfrm_state_look_at(struct xfrm_policy
*pol
, struct xfrm_state
*x
,
751 const struct flowi
*fl
, unsigned short family
,
752 struct xfrm_state
**best
, int *acq_in_progress
,
756 * 1. There is a valid state with matching selector. Done.
757 * 2. Valid state with inappropriate selector. Skip.
759 * Entering area of "sysdeps".
761 * 3. If state is not valid, selector is temporary, it selects
762 * only session which triggered previous resolution. Key
763 * manager will do something to install a state with proper
766 if (x
->km
.state
== XFRM_STATE_VALID
) {
767 if ((x
->sel
.family
&&
768 !xfrm_selector_match(&x
->sel
, fl
, x
->sel
.family
)) ||
769 !security_xfrm_state_pol_flow_match(x
, pol
, fl
))
773 (*best
)->km
.dying
> x
->km
.dying
||
774 ((*best
)->km
.dying
== x
->km
.dying
&&
775 (*best
)->curlft
.add_time
< x
->curlft
.add_time
))
777 } else if (x
->km
.state
== XFRM_STATE_ACQ
) {
778 *acq_in_progress
= 1;
779 } else if (x
->km
.state
== XFRM_STATE_ERROR
||
780 x
->km
.state
== XFRM_STATE_EXPIRED
) {
781 if (xfrm_selector_match(&x
->sel
, fl
, x
->sel
.family
) &&
782 security_xfrm_state_pol_flow_match(x
, pol
, fl
))
788 xfrm_state_find(const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
789 const struct flowi
*fl
, struct xfrm_tmpl
*tmpl
,
790 struct xfrm_policy
*pol
, int *err
,
791 unsigned short family
)
793 static xfrm_address_t saddr_wildcard
= { };
794 struct net
*net
= xp_net(pol
);
795 unsigned int h
, h_wildcard
;
796 struct hlist_node
*entry
;
797 struct xfrm_state
*x
, *x0
, *to_put
;
798 int acquire_in_progress
= 0;
800 struct xfrm_state
*best
= NULL
;
801 u32 mark
= pol
->mark
.v
& pol
->mark
.m
;
802 unsigned short encap_family
= tmpl
->encap_family
;
806 spin_lock_bh(&xfrm_state_lock
);
807 h
= xfrm_dst_hash(net
, daddr
, saddr
, tmpl
->reqid
, encap_family
);
808 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
809 if (x
->props
.family
== encap_family
&&
810 x
->props
.reqid
== tmpl
->reqid
&&
811 (mark
& x
->mark
.m
) == x
->mark
.v
&&
812 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
813 xfrm_state_addr_check(x
, daddr
, saddr
, encap_family
) &&
814 tmpl
->mode
== x
->props
.mode
&&
815 tmpl
->id
.proto
== x
->id
.proto
&&
816 (tmpl
->id
.spi
== x
->id
.spi
|| !tmpl
->id
.spi
))
817 xfrm_state_look_at(pol
, x
, fl
, encap_family
,
818 &best
, &acquire_in_progress
, &error
);
823 h_wildcard
= xfrm_dst_hash(net
, daddr
, &saddr_wildcard
, tmpl
->reqid
, encap_family
);
824 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h_wildcard
, bydst
) {
825 if (x
->props
.family
== encap_family
&&
826 x
->props
.reqid
== tmpl
->reqid
&&
827 (mark
& x
->mark
.m
) == x
->mark
.v
&&
828 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
829 xfrm_state_addr_check(x
, daddr
, saddr
, encap_family
) &&
830 tmpl
->mode
== x
->props
.mode
&&
831 tmpl
->id
.proto
== x
->id
.proto
&&
832 (tmpl
->id
.spi
== x
->id
.spi
|| !tmpl
->id
.spi
))
833 xfrm_state_look_at(pol
, x
, fl
, encap_family
,
834 &best
, &acquire_in_progress
, &error
);
839 if (!x
&& !error
&& !acquire_in_progress
) {
841 (x0
= __xfrm_state_lookup(net
, mark
, daddr
, tmpl
->id
.spi
,
842 tmpl
->id
.proto
, encap_family
)) != NULL
) {
847 x
= xfrm_state_alloc(net
);
852 /* Initialize temporary state matching only
853 * to current session. */
854 xfrm_init_tempstate(x
, fl
, tmpl
, daddr
, saddr
, family
);
855 memcpy(&x
->mark
, &pol
->mark
, sizeof(x
->mark
));
857 error
= security_xfrm_state_alloc_acquire(x
, pol
->security
, fl
->flowi_secid
);
859 x
->km
.state
= XFRM_STATE_DEAD
;
865 if (km_query(x
, tmpl
, pol
) == 0) {
866 x
->km
.state
= XFRM_STATE_ACQ
;
867 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
868 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
869 h
= xfrm_src_hash(net
, daddr
, saddr
, encap_family
);
870 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
872 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
, encap_family
);
873 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
875 x
->lft
.hard_add_expires_seconds
= net
->xfrm
.sysctl_acq_expires
;
876 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(net
->xfrm
.sysctl_acq_expires
, 0), HRTIMER_MODE_REL
);
877 net
->xfrm
.state_num
++;
878 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
880 x
->km
.state
= XFRM_STATE_DEAD
;
890 *err
= acquire_in_progress
? -EAGAIN
: error
;
891 spin_unlock_bh(&xfrm_state_lock
);
893 xfrm_state_put(to_put
);
898 xfrm_stateonly_find(struct net
*net
, u32 mark
,
899 xfrm_address_t
*daddr
, xfrm_address_t
*saddr
,
900 unsigned short family
, u8 mode
, u8 proto
, u32 reqid
)
903 struct xfrm_state
*rx
= NULL
, *x
= NULL
;
904 struct hlist_node
*entry
;
906 spin_lock(&xfrm_state_lock
);
907 h
= xfrm_dst_hash(net
, daddr
, saddr
, reqid
, family
);
908 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
909 if (x
->props
.family
== family
&&
910 x
->props
.reqid
== reqid
&&
911 (mark
& x
->mark
.m
) == x
->mark
.v
&&
912 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
913 xfrm_state_addr_check(x
, daddr
, saddr
, family
) &&
914 mode
== x
->props
.mode
&&
915 proto
== x
->id
.proto
&&
916 x
->km
.state
== XFRM_STATE_VALID
) {
924 spin_unlock(&xfrm_state_lock
);
929 EXPORT_SYMBOL(xfrm_stateonly_find
);
931 static void __xfrm_state_insert(struct xfrm_state
*x
)
933 struct net
*net
= xs_net(x
);
936 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
938 h
= xfrm_dst_hash(net
, &x
->id
.daddr
, &x
->props
.saddr
,
939 x
->props
.reqid
, x
->props
.family
);
940 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
942 h
= xfrm_src_hash(net
, &x
->id
.daddr
, &x
->props
.saddr
, x
->props
.family
);
943 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
946 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
,
949 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
952 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(1, 0), HRTIMER_MODE_REL
);
953 if (x
->replay_maxage
)
954 mod_timer(&x
->rtimer
, jiffies
+ x
->replay_maxage
);
956 wake_up(&net
->xfrm
.km_waitq
);
958 net
->xfrm
.state_num
++;
960 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
963 /* xfrm_state_lock is held */
964 static void __xfrm_state_bump_genids(struct xfrm_state
*xnew
)
966 struct net
*net
= xs_net(xnew
);
967 unsigned short family
= xnew
->props
.family
;
968 u32 reqid
= xnew
->props
.reqid
;
969 struct xfrm_state
*x
;
970 struct hlist_node
*entry
;
972 u32 mark
= xnew
->mark
.v
& xnew
->mark
.m
;
974 h
= xfrm_dst_hash(net
, &xnew
->id
.daddr
, &xnew
->props
.saddr
, reqid
, family
);
975 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
976 if (x
->props
.family
== family
&&
977 x
->props
.reqid
== reqid
&&
978 (mark
& x
->mark
.m
) == x
->mark
.v
&&
979 !xfrm_addr_cmp(&x
->id
.daddr
, &xnew
->id
.daddr
, family
) &&
980 !xfrm_addr_cmp(&x
->props
.saddr
, &xnew
->props
.saddr
, family
))
985 void xfrm_state_insert(struct xfrm_state
*x
)
987 spin_lock_bh(&xfrm_state_lock
);
988 __xfrm_state_bump_genids(x
);
989 __xfrm_state_insert(x
);
990 spin_unlock_bh(&xfrm_state_lock
);
992 EXPORT_SYMBOL(xfrm_state_insert
);
994 /* xfrm_state_lock is held */
995 static struct xfrm_state
*__find_acq_core(struct net
*net
, struct xfrm_mark
*m
,
996 unsigned short family
, u8 mode
,
998 const xfrm_address_t
*daddr
,
999 const xfrm_address_t
*saddr
, int create
)
1001 unsigned int h
= xfrm_dst_hash(net
, daddr
, saddr
, reqid
, family
);
1002 struct hlist_node
*entry
;
1003 struct xfrm_state
*x
;
1004 u32 mark
= m
->v
& m
->m
;
1006 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
1007 if (x
->props
.reqid
!= reqid
||
1008 x
->props
.mode
!= mode
||
1009 x
->props
.family
!= family
||
1010 x
->km
.state
!= XFRM_STATE_ACQ
||
1012 x
->id
.proto
!= proto
||
1013 (mark
& x
->mark
.m
) != x
->mark
.v
||
1014 xfrm_addr_cmp(&x
->id
.daddr
, daddr
, family
) ||
1015 xfrm_addr_cmp(&x
->props
.saddr
, saddr
, family
))
1025 x
= xfrm_state_alloc(net
);
1029 x
->sel
.daddr
.a4
= daddr
->a4
;
1030 x
->sel
.saddr
.a4
= saddr
->a4
;
1031 x
->sel
.prefixlen_d
= 32;
1032 x
->sel
.prefixlen_s
= 32;
1033 x
->props
.saddr
.a4
= saddr
->a4
;
1034 x
->id
.daddr
.a4
= daddr
->a4
;
1038 ipv6_addr_copy((struct in6_addr
*)x
->sel
.daddr
.a6
,
1039 (const struct in6_addr
*)daddr
);
1040 ipv6_addr_copy((struct in6_addr
*)x
->sel
.saddr
.a6
,
1041 (const struct in6_addr
*)saddr
);
1042 x
->sel
.prefixlen_d
= 128;
1043 x
->sel
.prefixlen_s
= 128;
1044 ipv6_addr_copy((struct in6_addr
*)x
->props
.saddr
.a6
,
1045 (const struct in6_addr
*)saddr
);
1046 ipv6_addr_copy((struct in6_addr
*)x
->id
.daddr
.a6
,
1047 (const struct in6_addr
*)daddr
);
1051 x
->km
.state
= XFRM_STATE_ACQ
;
1052 x
->id
.proto
= proto
;
1053 x
->props
.family
= family
;
1054 x
->props
.mode
= mode
;
1055 x
->props
.reqid
= reqid
;
1058 x
->lft
.hard_add_expires_seconds
= net
->xfrm
.sysctl_acq_expires
;
1060 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(net
->xfrm
.sysctl_acq_expires
, 0), HRTIMER_MODE_REL
);
1061 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
1062 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
1063 h
= xfrm_src_hash(net
, daddr
, saddr
, family
);
1064 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
1066 net
->xfrm
.state_num
++;
1068 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
1074 static struct xfrm_state
*__xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
);
1076 int xfrm_state_add(struct xfrm_state
*x
)
1078 struct net
*net
= xs_net(x
);
1079 struct xfrm_state
*x1
, *to_put
;
1082 u32 mark
= x
->mark
.v
& x
->mark
.m
;
1083 int use_spi
= xfrm_id_proto_match(x
->id
.proto
, IPSEC_PROTO_ANY
);
1085 family
= x
->props
.family
;
1089 spin_lock_bh(&xfrm_state_lock
);
1091 x1
= __xfrm_state_locate(x
, use_spi
, family
);
1099 if (use_spi
&& x
->km
.seq
) {
1100 x1
= __xfrm_find_acq_byseq(net
, mark
, x
->km
.seq
);
1101 if (x1
&& ((x1
->id
.proto
!= x
->id
.proto
) ||
1102 xfrm_addr_cmp(&x1
->id
.daddr
, &x
->id
.daddr
, family
))) {
1109 x1
= __find_acq_core(net
, &x
->mark
, family
, x
->props
.mode
,
1110 x
->props
.reqid
, x
->id
.proto
,
1111 &x
->id
.daddr
, &x
->props
.saddr
, 0);
1113 __xfrm_state_bump_genids(x
);
1114 __xfrm_state_insert(x
);
1118 spin_unlock_bh(&xfrm_state_lock
);
1121 xfrm_state_delete(x1
);
1126 xfrm_state_put(to_put
);
1130 EXPORT_SYMBOL(xfrm_state_add
);
1132 #ifdef CONFIG_XFRM_MIGRATE
1133 static struct xfrm_state
*xfrm_state_clone(struct xfrm_state
*orig
, int *errp
)
1135 struct net
*net
= xs_net(orig
);
1137 struct xfrm_state
*x
= xfrm_state_alloc(net
);
1141 memcpy(&x
->id
, &orig
->id
, sizeof(x
->id
));
1142 memcpy(&x
->sel
, &orig
->sel
, sizeof(x
->sel
));
1143 memcpy(&x
->lft
, &orig
->lft
, sizeof(x
->lft
));
1144 x
->props
.mode
= orig
->props
.mode
;
1145 x
->props
.replay_window
= orig
->props
.replay_window
;
1146 x
->props
.reqid
= orig
->props
.reqid
;
1147 x
->props
.family
= orig
->props
.family
;
1148 x
->props
.saddr
= orig
->props
.saddr
;
1151 x
->aalg
= xfrm_algo_auth_clone(orig
->aalg
);
1155 x
->props
.aalgo
= orig
->props
.aalgo
;
1158 x
->ealg
= xfrm_algo_clone(orig
->ealg
);
1162 x
->props
.ealgo
= orig
->props
.ealgo
;
1165 x
->calg
= xfrm_algo_clone(orig
->calg
);
1169 x
->props
.calgo
= orig
->props
.calgo
;
1172 x
->encap
= kmemdup(orig
->encap
, sizeof(*x
->encap
), GFP_KERNEL
);
1178 x
->coaddr
= kmemdup(orig
->coaddr
, sizeof(*x
->coaddr
),
1184 if (orig
->replay_esn
) {
1185 err
= xfrm_replay_clone(x
, orig
);
1190 memcpy(&x
->mark
, &orig
->mark
, sizeof(x
->mark
));
1192 err
= xfrm_init_state(x
);
1196 x
->props
.flags
= orig
->props
.flags
;
1198 x
->curlft
.add_time
= orig
->curlft
.add_time
;
1199 x
->km
.state
= orig
->km
.state
;
1200 x
->km
.seq
= orig
->km
.seq
;
1212 /* xfrm_state_lock is held */
1213 struct xfrm_state
* xfrm_migrate_state_find(struct xfrm_migrate
*m
)
1216 struct xfrm_state
*x
;
1217 struct hlist_node
*entry
;
1220 h
= xfrm_dst_hash(&init_net
, &m
->old_daddr
, &m
->old_saddr
,
1221 m
->reqid
, m
->old_family
);
1222 hlist_for_each_entry(x
, entry
, init_net
.xfrm
.state_bydst
+h
, bydst
) {
1223 if (x
->props
.mode
!= m
->mode
||
1224 x
->id
.proto
!= m
->proto
)
1226 if (m
->reqid
&& x
->props
.reqid
!= m
->reqid
)
1228 if (xfrm_addr_cmp(&x
->id
.daddr
, &m
->old_daddr
,
1230 xfrm_addr_cmp(&x
->props
.saddr
, &m
->old_saddr
,
1237 h
= xfrm_src_hash(&init_net
, &m
->old_daddr
, &m
->old_saddr
,
1239 hlist_for_each_entry(x
, entry
, init_net
.xfrm
.state_bysrc
+h
, bysrc
) {
1240 if (x
->props
.mode
!= m
->mode
||
1241 x
->id
.proto
!= m
->proto
)
1243 if (xfrm_addr_cmp(&x
->id
.daddr
, &m
->old_daddr
,
1245 xfrm_addr_cmp(&x
->props
.saddr
, &m
->old_saddr
,
1255 EXPORT_SYMBOL(xfrm_migrate_state_find
);
1257 struct xfrm_state
* xfrm_state_migrate(struct xfrm_state
*x
,
1258 struct xfrm_migrate
*m
)
1260 struct xfrm_state
*xc
;
1263 xc
= xfrm_state_clone(x
, &err
);
1267 memcpy(&xc
->id
.daddr
, &m
->new_daddr
, sizeof(xc
->id
.daddr
));
1268 memcpy(&xc
->props
.saddr
, &m
->new_saddr
, sizeof(xc
->props
.saddr
));
1271 if (!xfrm_addr_cmp(&x
->id
.daddr
, &m
->new_daddr
, m
->new_family
)) {
1272 /* a care is needed when the destination address of the
1273 state is to be updated as it is a part of triplet */
1274 xfrm_state_insert(xc
);
1276 if ((err
= xfrm_state_add(xc
)) < 0)
1285 EXPORT_SYMBOL(xfrm_state_migrate
);
1288 int xfrm_state_update(struct xfrm_state
*x
)
1290 struct xfrm_state
*x1
, *to_put
;
1292 int use_spi
= xfrm_id_proto_match(x
->id
.proto
, IPSEC_PROTO_ANY
);
1296 spin_lock_bh(&xfrm_state_lock
);
1297 x1
= __xfrm_state_locate(x
, use_spi
, x
->props
.family
);
1303 if (xfrm_state_kern(x1
)) {
1309 if (x1
->km
.state
== XFRM_STATE_ACQ
) {
1310 __xfrm_state_insert(x
);
1316 spin_unlock_bh(&xfrm_state_lock
);
1319 xfrm_state_put(to_put
);
1325 xfrm_state_delete(x1
);
1331 spin_lock_bh(&x1
->lock
);
1332 if (likely(x1
->km
.state
== XFRM_STATE_VALID
)) {
1333 if (x
->encap
&& x1
->encap
)
1334 memcpy(x1
->encap
, x
->encap
, sizeof(*x1
->encap
));
1335 if (x
->coaddr
&& x1
->coaddr
) {
1336 memcpy(x1
->coaddr
, x
->coaddr
, sizeof(*x1
->coaddr
));
1338 if (!use_spi
&& memcmp(&x1
->sel
, &x
->sel
, sizeof(x1
->sel
)))
1339 memcpy(&x1
->sel
, &x
->sel
, sizeof(x1
->sel
));
1340 memcpy(&x1
->lft
, &x
->lft
, sizeof(x1
->lft
));
1343 tasklet_hrtimer_start(&x1
->mtimer
, ktime_set(1, 0), HRTIMER_MODE_REL
);
1344 if (x1
->curlft
.use_time
)
1345 xfrm_state_check_expire(x1
);
1349 spin_unlock_bh(&x1
->lock
);
1355 EXPORT_SYMBOL(xfrm_state_update
);
1357 int xfrm_state_check_expire(struct xfrm_state
*x
)
1359 if (!x
->curlft
.use_time
)
1360 x
->curlft
.use_time
= get_seconds();
1362 if (x
->km
.state
!= XFRM_STATE_VALID
)
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
);
1640 static DEFINE_RWLOCK(xfrm_km_lock
);
1642 void km_policy_notify(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
1644 struct xfrm_mgr
*km
;
1646 read_lock(&xfrm_km_lock
);
1647 list_for_each_entry(km
, &xfrm_km_list
, list
)
1648 if (km
->notify_policy
)
1649 km
->notify_policy(xp
, dir
, c
);
1650 read_unlock(&xfrm_km_lock
);
1653 void km_state_notify(struct xfrm_state
*x
, const struct km_event
*c
)
1655 struct xfrm_mgr
*km
;
1656 read_lock(&xfrm_km_lock
);
1657 list_for_each_entry(km
, &xfrm_km_list
, list
)
1660 read_unlock(&xfrm_km_lock
);
1663 EXPORT_SYMBOL(km_policy_notify
);
1664 EXPORT_SYMBOL(km_state_notify
);
1666 void km_state_expired(struct xfrm_state
*x
, int hard
, u32 pid
)
1668 struct net
*net
= xs_net(x
);
1673 c
.event
= XFRM_MSG_EXPIRE
;
1674 km_state_notify(x
, &c
);
1677 wake_up(&net
->xfrm
.km_waitq
);
1680 EXPORT_SYMBOL(km_state_expired
);
1682 * We send to all registered managers regardless of failure
1683 * We are happy with one success
1685 int km_query(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*pol
)
1687 int err
= -EINVAL
, acqret
;
1688 struct xfrm_mgr
*km
;
1690 read_lock(&xfrm_km_lock
);
1691 list_for_each_entry(km
, &xfrm_km_list
, list
) {
1692 acqret
= km
->acquire(x
, t
, pol
, XFRM_POLICY_OUT
);
1696 read_unlock(&xfrm_km_lock
);
1699 EXPORT_SYMBOL(km_query
);
1701 int km_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
1704 struct xfrm_mgr
*km
;
1706 read_lock(&xfrm_km_lock
);
1707 list_for_each_entry(km
, &xfrm_km_list
, list
) {
1708 if (km
->new_mapping
)
1709 err
= km
->new_mapping(x
, ipaddr
, sport
);
1713 read_unlock(&xfrm_km_lock
);
1716 EXPORT_SYMBOL(km_new_mapping
);
1718 void km_policy_expired(struct xfrm_policy
*pol
, int dir
, int hard
, u32 pid
)
1720 struct net
*net
= xp_net(pol
);
1725 c
.event
= XFRM_MSG_POLEXPIRE
;
1726 km_policy_notify(pol
, dir
, &c
);
1729 wake_up(&net
->xfrm
.km_waitq
);
1731 EXPORT_SYMBOL(km_policy_expired
);
1733 #ifdef CONFIG_XFRM_MIGRATE
1734 int km_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
1735 const struct xfrm_migrate
*m
, int num_migrate
,
1736 const struct xfrm_kmaddress
*k
)
1740 struct xfrm_mgr
*km
;
1742 read_lock(&xfrm_km_lock
);
1743 list_for_each_entry(km
, &xfrm_km_list
, list
) {
1745 ret
= km
->migrate(sel
, dir
, type
, m
, num_migrate
, k
);
1750 read_unlock(&xfrm_km_lock
);
1753 EXPORT_SYMBOL(km_migrate
);
1756 int km_report(struct net
*net
, u8 proto
, struct xfrm_selector
*sel
, xfrm_address_t
*addr
)
1760 struct xfrm_mgr
*km
;
1762 read_lock(&xfrm_km_lock
);
1763 list_for_each_entry(km
, &xfrm_km_list
, list
) {
1765 ret
= km
->report(net
, proto
, sel
, addr
);
1770 read_unlock(&xfrm_km_lock
);
1773 EXPORT_SYMBOL(km_report
);
1775 int xfrm_user_policy(struct sock
*sk
, int optname
, u8 __user
*optval
, int optlen
)
1779 struct xfrm_mgr
*km
;
1780 struct xfrm_policy
*pol
= NULL
;
1782 if (optlen
<= 0 || optlen
> PAGE_SIZE
)
1785 data
= kmalloc(optlen
, GFP_KERNEL
);
1790 if (copy_from_user(data
, optval
, optlen
))
1794 read_lock(&xfrm_km_lock
);
1795 list_for_each_entry(km
, &xfrm_km_list
, list
) {
1796 pol
= km
->compile_policy(sk
, optname
, data
,
1801 read_unlock(&xfrm_km_lock
);
1804 xfrm_sk_policy_insert(sk
, err
, pol
);
1813 EXPORT_SYMBOL(xfrm_user_policy
);
1815 int xfrm_register_km(struct xfrm_mgr
*km
)
1817 write_lock_bh(&xfrm_km_lock
);
1818 list_add_tail(&km
->list
, &xfrm_km_list
);
1819 write_unlock_bh(&xfrm_km_lock
);
1822 EXPORT_SYMBOL(xfrm_register_km
);
1824 int xfrm_unregister_km(struct xfrm_mgr
*km
)
1826 write_lock_bh(&xfrm_km_lock
);
1827 list_del(&km
->list
);
1828 write_unlock_bh(&xfrm_km_lock
);
1831 EXPORT_SYMBOL(xfrm_unregister_km
);
1833 int xfrm_state_register_afinfo(struct xfrm_state_afinfo
*afinfo
)
1836 if (unlikely(afinfo
== NULL
))
1838 if (unlikely(afinfo
->family
>= NPROTO
))
1839 return -EAFNOSUPPORT
;
1840 write_lock_bh(&xfrm_state_afinfo_lock
);
1841 if (unlikely(xfrm_state_afinfo
[afinfo
->family
] != NULL
))
1844 xfrm_state_afinfo
[afinfo
->family
] = afinfo
;
1845 write_unlock_bh(&xfrm_state_afinfo_lock
);
1848 EXPORT_SYMBOL(xfrm_state_register_afinfo
);
1850 int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo
*afinfo
)
1853 if (unlikely(afinfo
== NULL
))
1855 if (unlikely(afinfo
->family
>= NPROTO
))
1856 return -EAFNOSUPPORT
;
1857 write_lock_bh(&xfrm_state_afinfo_lock
);
1858 if (likely(xfrm_state_afinfo
[afinfo
->family
] != NULL
)) {
1859 if (unlikely(xfrm_state_afinfo
[afinfo
->family
] != afinfo
))
1862 xfrm_state_afinfo
[afinfo
->family
] = NULL
;
1864 write_unlock_bh(&xfrm_state_afinfo_lock
);
1867 EXPORT_SYMBOL(xfrm_state_unregister_afinfo
);
1869 static struct xfrm_state_afinfo
*xfrm_state_get_afinfo(unsigned int family
)
1871 struct xfrm_state_afinfo
*afinfo
;
1872 if (unlikely(family
>= NPROTO
))
1874 read_lock(&xfrm_state_afinfo_lock
);
1875 afinfo
= xfrm_state_afinfo
[family
];
1876 if (unlikely(!afinfo
))
1877 read_unlock(&xfrm_state_afinfo_lock
);
1881 static void xfrm_state_put_afinfo(struct xfrm_state_afinfo
*afinfo
)
1882 __releases(xfrm_state_afinfo_lock
)
1884 read_unlock(&xfrm_state_afinfo_lock
);
1887 /* Temporarily located here until net/xfrm/xfrm_tunnel.c is created */
1888 void xfrm_state_delete_tunnel(struct xfrm_state
*x
)
1891 struct xfrm_state
*t
= x
->tunnel
;
1893 if (atomic_read(&t
->tunnel_users
) == 2)
1894 xfrm_state_delete(t
);
1895 atomic_dec(&t
->tunnel_users
);
1900 EXPORT_SYMBOL(xfrm_state_delete_tunnel
);
1902 int xfrm_state_mtu(struct xfrm_state
*x
, int mtu
)
1906 spin_lock_bh(&x
->lock
);
1907 if (x
->km
.state
== XFRM_STATE_VALID
&&
1908 x
->type
&& x
->type
->get_mtu
)
1909 res
= x
->type
->get_mtu(x
, mtu
);
1911 res
= mtu
- x
->props
.header_len
;
1912 spin_unlock_bh(&x
->lock
);
1916 int __xfrm_init_state(struct xfrm_state
*x
, bool init_replay
)
1918 struct xfrm_state_afinfo
*afinfo
;
1919 struct xfrm_mode
*inner_mode
;
1920 int family
= x
->props
.family
;
1923 err
= -EAFNOSUPPORT
;
1924 afinfo
= xfrm_state_get_afinfo(family
);
1929 if (afinfo
->init_flags
)
1930 err
= afinfo
->init_flags(x
);
1932 xfrm_state_put_afinfo(afinfo
);
1937 err
= -EPROTONOSUPPORT
;
1939 if (x
->sel
.family
!= AF_UNSPEC
) {
1940 inner_mode
= xfrm_get_mode(x
->props
.mode
, x
->sel
.family
);
1941 if (inner_mode
== NULL
)
1944 if (!(inner_mode
->flags
& XFRM_MODE_FLAG_TUNNEL
) &&
1945 family
!= x
->sel
.family
) {
1946 xfrm_put_mode(inner_mode
);
1950 x
->inner_mode
= inner_mode
;
1952 struct xfrm_mode
*inner_mode_iaf
;
1953 int iafamily
= AF_INET
;
1955 inner_mode
= xfrm_get_mode(x
->props
.mode
, x
->props
.family
);
1956 if (inner_mode
== NULL
)
1959 if (!(inner_mode
->flags
& XFRM_MODE_FLAG_TUNNEL
)) {
1960 xfrm_put_mode(inner_mode
);
1963 x
->inner_mode
= inner_mode
;
1965 if (x
->props
.family
== AF_INET
)
1966 iafamily
= AF_INET6
;
1968 inner_mode_iaf
= xfrm_get_mode(x
->props
.mode
, iafamily
);
1969 if (inner_mode_iaf
) {
1970 if (inner_mode_iaf
->flags
& XFRM_MODE_FLAG_TUNNEL
)
1971 x
->inner_mode_iaf
= inner_mode_iaf
;
1973 xfrm_put_mode(inner_mode_iaf
);
1977 x
->type
= xfrm_get_type(x
->id
.proto
, family
);
1978 if (x
->type
== NULL
)
1981 err
= x
->type
->init_state(x
);
1985 x
->outer_mode
= xfrm_get_mode(x
->props
.mode
, family
);
1986 if (x
->outer_mode
== NULL
)
1990 err
= xfrm_init_replay(x
);
1995 x
->km
.state
= XFRM_STATE_VALID
;
2001 EXPORT_SYMBOL(__xfrm_init_state
);
2003 int xfrm_init_state(struct xfrm_state
*x
)
2005 return __xfrm_init_state(x
, true);
2008 EXPORT_SYMBOL(xfrm_init_state
);
2010 int __net_init
xfrm_state_init(struct net
*net
)
2014 INIT_LIST_HEAD(&net
->xfrm
.state_all
);
2016 sz
= sizeof(struct hlist_head
) * 8;
2018 net
->xfrm
.state_bydst
= xfrm_hash_alloc(sz
);
2019 if (!net
->xfrm
.state_bydst
)
2021 net
->xfrm
.state_bysrc
= xfrm_hash_alloc(sz
);
2022 if (!net
->xfrm
.state_bysrc
)
2024 net
->xfrm
.state_byspi
= xfrm_hash_alloc(sz
);
2025 if (!net
->xfrm
.state_byspi
)
2027 net
->xfrm
.state_hmask
= ((sz
/ sizeof(struct hlist_head
)) - 1);
2029 net
->xfrm
.state_num
= 0;
2030 INIT_WORK(&net
->xfrm
.state_hash_work
, xfrm_hash_resize
);
2031 INIT_HLIST_HEAD(&net
->xfrm
.state_gc_list
);
2032 INIT_WORK(&net
->xfrm
.state_gc_work
, xfrm_state_gc_task
);
2033 init_waitqueue_head(&net
->xfrm
.km_waitq
);
2037 xfrm_hash_free(net
->xfrm
.state_bysrc
, sz
);
2039 xfrm_hash_free(net
->xfrm
.state_bydst
, sz
);
2044 void xfrm_state_fini(struct net
*net
)
2046 struct xfrm_audit audit_info
;
2049 flush_work(&net
->xfrm
.state_hash_work
);
2050 audit_info
.loginuid
= -1;
2051 audit_info
.sessionid
= -1;
2052 audit_info
.secid
= 0;
2053 xfrm_state_flush(net
, IPSEC_PROTO_ANY
, &audit_info
);
2054 flush_work(&net
->xfrm
.state_gc_work
);
2056 WARN_ON(!list_empty(&net
->xfrm
.state_all
));
2058 sz
= (net
->xfrm
.state_hmask
+ 1) * sizeof(struct hlist_head
);
2059 WARN_ON(!hlist_empty(net
->xfrm
.state_byspi
));
2060 xfrm_hash_free(net
->xfrm
.state_byspi
, sz
);
2061 WARN_ON(!hlist_empty(net
->xfrm
.state_bysrc
));
2062 xfrm_hash_free(net
->xfrm
.state_bysrc
, sz
);
2063 WARN_ON(!hlist_empty(net
->xfrm
.state_bydst
));
2064 xfrm_hash_free(net
->xfrm
.state_bydst
, sz
);
2067 #ifdef CONFIG_AUDITSYSCALL
2068 static void xfrm_audit_helper_sainfo(struct xfrm_state
*x
,
2069 struct audit_buffer
*audit_buf
)
2071 struct xfrm_sec_ctx
*ctx
= x
->security
;
2072 u32 spi
= ntohl(x
->id
.spi
);
2075 audit_log_format(audit_buf
, " sec_alg=%u sec_doi=%u sec_obj=%s",
2076 ctx
->ctx_alg
, ctx
->ctx_doi
, ctx
->ctx_str
);
2078 switch(x
->props
.family
) {
2080 audit_log_format(audit_buf
, " src=%pI4 dst=%pI4",
2081 &x
->props
.saddr
.a4
, &x
->id
.daddr
.a4
);
2084 audit_log_format(audit_buf
, " src=%pI6 dst=%pI6",
2085 x
->props
.saddr
.a6
, x
->id
.daddr
.a6
);
2089 audit_log_format(audit_buf
, " spi=%u(0x%x)", spi
, spi
);
2092 static void xfrm_audit_helper_pktinfo(struct sk_buff
*skb
, u16 family
,
2093 struct audit_buffer
*audit_buf
)
2095 const struct iphdr
*iph4
;
2096 const struct ipv6hdr
*iph6
;
2101 audit_log_format(audit_buf
, " src=%pI4 dst=%pI4",
2102 &iph4
->saddr
, &iph4
->daddr
);
2105 iph6
= ipv6_hdr(skb
);
2106 audit_log_format(audit_buf
,
2107 " src=%pI6 dst=%pI6 flowlbl=0x%x%02x%02x",
2108 &iph6
->saddr
,&iph6
->daddr
,
2109 iph6
->flow_lbl
[0] & 0x0f,
2116 void xfrm_audit_state_add(struct xfrm_state
*x
, int result
,
2117 uid_t auid
, u32 sessionid
, u32 secid
)
2119 struct audit_buffer
*audit_buf
;
2121 audit_buf
= xfrm_audit_start("SAD-add");
2122 if (audit_buf
== NULL
)
2124 xfrm_audit_helper_usrinfo(auid
, sessionid
, secid
, audit_buf
);
2125 xfrm_audit_helper_sainfo(x
, audit_buf
);
2126 audit_log_format(audit_buf
, " res=%u", result
);
2127 audit_log_end(audit_buf
);
2129 EXPORT_SYMBOL_GPL(xfrm_audit_state_add
);
2131 void xfrm_audit_state_delete(struct xfrm_state
*x
, int result
,
2132 uid_t auid
, u32 sessionid
, u32 secid
)
2134 struct audit_buffer
*audit_buf
;
2136 audit_buf
= xfrm_audit_start("SAD-delete");
2137 if (audit_buf
== NULL
)
2139 xfrm_audit_helper_usrinfo(auid
, sessionid
, secid
, audit_buf
);
2140 xfrm_audit_helper_sainfo(x
, audit_buf
);
2141 audit_log_format(audit_buf
, " res=%u", result
);
2142 audit_log_end(audit_buf
);
2144 EXPORT_SYMBOL_GPL(xfrm_audit_state_delete
);
2146 void xfrm_audit_state_replay_overflow(struct xfrm_state
*x
,
2147 struct sk_buff
*skb
)
2149 struct audit_buffer
*audit_buf
;
2152 audit_buf
= xfrm_audit_start("SA-replay-overflow");
2153 if (audit_buf
== NULL
)
2155 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2156 /* don't record the sequence number because it's inherent in this kind
2157 * of audit message */
2158 spi
= ntohl(x
->id
.spi
);
2159 audit_log_format(audit_buf
, " spi=%u(0x%x)", spi
, spi
);
2160 audit_log_end(audit_buf
);
2162 EXPORT_SYMBOL_GPL(xfrm_audit_state_replay_overflow
);
2164 void xfrm_audit_state_replay(struct xfrm_state
*x
,
2165 struct sk_buff
*skb
, __be32 net_seq
)
2167 struct audit_buffer
*audit_buf
;
2170 audit_buf
= xfrm_audit_start("SA-replayed-pkt");
2171 if (audit_buf
== NULL
)
2173 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2174 spi
= ntohl(x
->id
.spi
);
2175 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2176 spi
, spi
, ntohl(net_seq
));
2177 audit_log_end(audit_buf
);
2179 EXPORT_SYMBOL_GPL(xfrm_audit_state_replay
);
2181 void xfrm_audit_state_notfound_simple(struct sk_buff
*skb
, u16 family
)
2183 struct audit_buffer
*audit_buf
;
2185 audit_buf
= xfrm_audit_start("SA-notfound");
2186 if (audit_buf
== NULL
)
2188 xfrm_audit_helper_pktinfo(skb
, family
, audit_buf
);
2189 audit_log_end(audit_buf
);
2191 EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound_simple
);
2193 void xfrm_audit_state_notfound(struct sk_buff
*skb
, u16 family
,
2194 __be32 net_spi
, __be32 net_seq
)
2196 struct audit_buffer
*audit_buf
;
2199 audit_buf
= xfrm_audit_start("SA-notfound");
2200 if (audit_buf
== NULL
)
2202 xfrm_audit_helper_pktinfo(skb
, family
, audit_buf
);
2203 spi
= ntohl(net_spi
);
2204 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2205 spi
, spi
, ntohl(net_seq
));
2206 audit_log_end(audit_buf
);
2208 EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound
);
2210 void xfrm_audit_state_icvfail(struct xfrm_state
*x
,
2211 struct sk_buff
*skb
, u8 proto
)
2213 struct audit_buffer
*audit_buf
;
2217 audit_buf
= xfrm_audit_start("SA-icv-failure");
2218 if (audit_buf
== NULL
)
2220 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2221 if (xfrm_parse_spi(skb
, proto
, &net_spi
, &net_seq
) == 0) {
2222 u32 spi
= ntohl(net_spi
);
2223 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2224 spi
, spi
, ntohl(net_seq
));
2226 audit_log_end(audit_buf
);
2228 EXPORT_SYMBOL_GPL(xfrm_audit_state_icvfail
);
2229 #endif /* CONFIG_AUDITSYSCALL */