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 struct xfrm_state_afinfo
*xfrm_state_lock_afinfo(unsigned int family
)
173 struct xfrm_state_afinfo
*afinfo
;
174 if (unlikely(family
>= NPROTO
))
176 spin_lock_bh(&xfrm_state_afinfo_lock
);
177 afinfo
= xfrm_state_afinfo
[family
];
178 if (unlikely(!afinfo
))
179 spin_unlock_bh(&xfrm_state_afinfo_lock
);
183 static void xfrm_state_unlock_afinfo(struct xfrm_state_afinfo
*afinfo
)
185 spin_unlock_bh(&xfrm_state_afinfo_lock
);
188 int xfrm_register_type(const struct xfrm_type
*type
, unsigned short family
)
190 struct xfrm_state_afinfo
*afinfo
= xfrm_state_lock_afinfo(family
);
191 const struct xfrm_type
**typemap
;
194 if (unlikely(afinfo
== NULL
))
195 return -EAFNOSUPPORT
;
196 typemap
= afinfo
->type_map
;
198 if (likely(typemap
[type
->proto
] == NULL
))
199 typemap
[type
->proto
] = type
;
202 xfrm_state_unlock_afinfo(afinfo
);
205 EXPORT_SYMBOL(xfrm_register_type
);
207 int xfrm_unregister_type(const struct xfrm_type
*type
, unsigned short family
)
209 struct xfrm_state_afinfo
*afinfo
= xfrm_state_lock_afinfo(family
);
210 const struct xfrm_type
**typemap
;
213 if (unlikely(afinfo
== NULL
))
214 return -EAFNOSUPPORT
;
215 typemap
= afinfo
->type_map
;
217 if (unlikely(typemap
[type
->proto
] != type
))
220 typemap
[type
->proto
] = NULL
;
221 xfrm_state_unlock_afinfo(afinfo
);
224 EXPORT_SYMBOL(xfrm_unregister_type
);
226 static const struct xfrm_type
*xfrm_get_type(u8 proto
, unsigned short family
)
228 struct xfrm_state_afinfo
*afinfo
;
229 const struct xfrm_type
**typemap
;
230 const struct xfrm_type
*type
;
231 int modload_attempted
= 0;
234 afinfo
= xfrm_state_get_afinfo(family
);
235 if (unlikely(afinfo
== NULL
))
237 typemap
= afinfo
->type_map
;
239 type
= typemap
[proto
];
240 if (unlikely(type
&& !try_module_get(type
->owner
)))
242 if (!type
&& !modload_attempted
) {
243 xfrm_state_put_afinfo(afinfo
);
244 request_module("xfrm-type-%d-%d", family
, proto
);
245 modload_attempted
= 1;
249 xfrm_state_put_afinfo(afinfo
);
253 static void xfrm_put_type(const struct xfrm_type
*type
)
255 module_put(type
->owner
);
258 int xfrm_register_mode(struct xfrm_mode
*mode
, int family
)
260 struct xfrm_state_afinfo
*afinfo
;
261 struct xfrm_mode
**modemap
;
264 if (unlikely(mode
->encap
>= XFRM_MODE_MAX
))
267 afinfo
= xfrm_state_lock_afinfo(family
);
268 if (unlikely(afinfo
== NULL
))
269 return -EAFNOSUPPORT
;
272 modemap
= afinfo
->mode_map
;
273 if (modemap
[mode
->encap
])
277 if (!try_module_get(afinfo
->owner
))
280 mode
->afinfo
= afinfo
;
281 modemap
[mode
->encap
] = mode
;
285 xfrm_state_unlock_afinfo(afinfo
);
288 EXPORT_SYMBOL(xfrm_register_mode
);
290 int xfrm_unregister_mode(struct xfrm_mode
*mode
, int family
)
292 struct xfrm_state_afinfo
*afinfo
;
293 struct xfrm_mode
**modemap
;
296 if (unlikely(mode
->encap
>= XFRM_MODE_MAX
))
299 afinfo
= xfrm_state_lock_afinfo(family
);
300 if (unlikely(afinfo
== NULL
))
301 return -EAFNOSUPPORT
;
304 modemap
= afinfo
->mode_map
;
305 if (likely(modemap
[mode
->encap
] == mode
)) {
306 modemap
[mode
->encap
] = NULL
;
307 module_put(mode
->afinfo
->owner
);
311 xfrm_state_unlock_afinfo(afinfo
);
314 EXPORT_SYMBOL(xfrm_unregister_mode
);
316 static struct xfrm_mode
*xfrm_get_mode(unsigned int encap
, int family
)
318 struct xfrm_state_afinfo
*afinfo
;
319 struct xfrm_mode
*mode
;
320 int modload_attempted
= 0;
322 if (unlikely(encap
>= XFRM_MODE_MAX
))
326 afinfo
= xfrm_state_get_afinfo(family
);
327 if (unlikely(afinfo
== NULL
))
330 mode
= afinfo
->mode_map
[encap
];
331 if (unlikely(mode
&& !try_module_get(mode
->owner
)))
333 if (!mode
&& !modload_attempted
) {
334 xfrm_state_put_afinfo(afinfo
);
335 request_module("xfrm-mode-%d-%d", family
, encap
);
336 modload_attempted
= 1;
340 xfrm_state_put_afinfo(afinfo
);
344 static void xfrm_put_mode(struct xfrm_mode
*mode
)
346 module_put(mode
->owner
);
349 static void xfrm_state_gc_destroy(struct xfrm_state
*x
)
351 tasklet_hrtimer_cancel(&x
->mtimer
);
352 del_timer_sync(&x
->rtimer
);
358 kfree(x
->replay_esn
);
359 kfree(x
->preplay_esn
);
361 xfrm_put_mode(x
->inner_mode
);
362 if (x
->inner_mode_iaf
)
363 xfrm_put_mode(x
->inner_mode_iaf
);
365 xfrm_put_mode(x
->outer_mode
);
367 x
->type
->destructor(x
);
368 xfrm_put_type(x
->type
);
370 security_xfrm_state_free(x
);
374 static void xfrm_state_gc_task(struct work_struct
*work
)
376 struct net
*net
= container_of(work
, struct net
, xfrm
.state_gc_work
);
377 struct xfrm_state
*x
;
378 struct hlist_node
*entry
, *tmp
;
379 struct hlist_head gc_list
;
381 spin_lock_bh(&xfrm_state_gc_lock
);
382 hlist_move_list(&net
->xfrm
.state_gc_list
, &gc_list
);
383 spin_unlock_bh(&xfrm_state_gc_lock
);
385 hlist_for_each_entry_safe(x
, entry
, tmp
, &gc_list
, gclist
)
386 xfrm_state_gc_destroy(x
);
388 wake_up(&net
->xfrm
.km_waitq
);
391 static inline unsigned long make_jiffies(long secs
)
393 if (secs
>= (MAX_SCHEDULE_TIMEOUT
-1)/HZ
)
394 return MAX_SCHEDULE_TIMEOUT
-1;
399 static enum hrtimer_restart
xfrm_timer_handler(struct hrtimer
* me
)
401 struct tasklet_hrtimer
*thr
= container_of(me
, struct tasklet_hrtimer
, timer
);
402 struct xfrm_state
*x
= container_of(thr
, struct xfrm_state
, mtimer
);
403 struct net
*net
= xs_net(x
);
404 unsigned long now
= get_seconds();
405 long next
= LONG_MAX
;
410 if (x
->km
.state
== XFRM_STATE_DEAD
)
412 if (x
->km
.state
== XFRM_STATE_EXPIRED
)
414 if (x
->lft
.hard_add_expires_seconds
) {
415 long tmo
= x
->lft
.hard_add_expires_seconds
+
416 x
->curlft
.add_time
- now
;
418 if (x
->xflags
& XFRM_SOFT_EXPIRE
) {
419 /* enter hard expire without soft expire first?!
420 * setting a new date could trigger this.
421 * workarbound: fix x->curflt.add_time by below:
423 x
->curlft
.add_time
= now
- x
->saved_tmo
- 1;
424 tmo
= x
->lft
.hard_add_expires_seconds
- x
->saved_tmo
;
431 if (x
->lft
.hard_use_expires_seconds
) {
432 long tmo
= x
->lft
.hard_use_expires_seconds
+
433 (x
->curlft
.use_time
? : now
) - now
;
441 if (x
->lft
.soft_add_expires_seconds
) {
442 long tmo
= x
->lft
.soft_add_expires_seconds
+
443 x
->curlft
.add_time
- now
;
446 x
->xflags
&= ~XFRM_SOFT_EXPIRE
;
447 } else if (tmo
< next
) {
449 x
->xflags
|= XFRM_SOFT_EXPIRE
;
453 if (x
->lft
.soft_use_expires_seconds
) {
454 long tmo
= x
->lft
.soft_use_expires_seconds
+
455 (x
->curlft
.use_time
? : now
) - now
;
464 km_state_expired(x
, 0, 0);
466 if (next
!= LONG_MAX
){
467 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(next
, 0), HRTIMER_MODE_REL
);
473 if (x
->km
.state
== XFRM_STATE_ACQ
&& x
->id
.spi
== 0) {
474 x
->km
.state
= XFRM_STATE_EXPIRED
;
475 wake_up(&net
->xfrm
.km_waitq
);
480 err
= __xfrm_state_delete(x
);
481 if (!err
&& x
->id
.spi
)
482 km_state_expired(x
, 1, 0);
484 xfrm_audit_state_delete(x
, err
? 0 : 1,
485 audit_get_loginuid(current
),
486 audit_get_sessionid(current
), 0);
489 spin_unlock(&x
->lock
);
490 return HRTIMER_NORESTART
;
493 static void xfrm_replay_timer_handler(unsigned long data
);
495 struct xfrm_state
*xfrm_state_alloc(struct net
*net
)
497 struct xfrm_state
*x
;
499 x
= kzalloc(sizeof(struct xfrm_state
), GFP_ATOMIC
);
502 write_pnet(&x
->xs_net
, net
);
503 atomic_set(&x
->refcnt
, 1);
504 atomic_set(&x
->tunnel_users
, 0);
505 INIT_LIST_HEAD(&x
->km
.all
);
506 INIT_HLIST_NODE(&x
->bydst
);
507 INIT_HLIST_NODE(&x
->bysrc
);
508 INIT_HLIST_NODE(&x
->byspi
);
509 tasklet_hrtimer_init(&x
->mtimer
, xfrm_timer_handler
, CLOCK_REALTIME
, HRTIMER_MODE_ABS
);
510 setup_timer(&x
->rtimer
, xfrm_replay_timer_handler
,
512 x
->curlft
.add_time
= get_seconds();
513 x
->lft
.soft_byte_limit
= XFRM_INF
;
514 x
->lft
.soft_packet_limit
= XFRM_INF
;
515 x
->lft
.hard_byte_limit
= XFRM_INF
;
516 x
->lft
.hard_packet_limit
= XFRM_INF
;
517 x
->replay_maxage
= 0;
518 x
->replay_maxdiff
= 0;
519 x
->inner_mode
= NULL
;
520 x
->inner_mode_iaf
= NULL
;
521 spin_lock_init(&x
->lock
);
525 EXPORT_SYMBOL(xfrm_state_alloc
);
527 void __xfrm_state_destroy(struct xfrm_state
*x
)
529 struct net
*net
= xs_net(x
);
531 WARN_ON(x
->km
.state
!= XFRM_STATE_DEAD
);
533 spin_lock_bh(&xfrm_state_gc_lock
);
534 hlist_add_head(&x
->gclist
, &net
->xfrm
.state_gc_list
);
535 spin_unlock_bh(&xfrm_state_gc_lock
);
536 schedule_work(&net
->xfrm
.state_gc_work
);
538 EXPORT_SYMBOL(__xfrm_state_destroy
);
540 int __xfrm_state_delete(struct xfrm_state
*x
)
542 struct net
*net
= xs_net(x
);
545 if (x
->km
.state
!= XFRM_STATE_DEAD
) {
546 x
->km
.state
= XFRM_STATE_DEAD
;
547 spin_lock(&xfrm_state_lock
);
548 list_del(&x
->km
.all
);
549 hlist_del(&x
->bydst
);
550 hlist_del(&x
->bysrc
);
552 hlist_del(&x
->byspi
);
553 net
->xfrm
.state_num
--;
554 spin_unlock(&xfrm_state_lock
);
556 /* All xfrm_state objects are created by xfrm_state_alloc.
557 * The xfrm_state_alloc call gives a reference, and that
558 * is what we are dropping here.
566 EXPORT_SYMBOL(__xfrm_state_delete
);
568 int xfrm_state_delete(struct xfrm_state
*x
)
572 spin_lock_bh(&x
->lock
);
573 err
= __xfrm_state_delete(x
);
574 spin_unlock_bh(&x
->lock
);
578 EXPORT_SYMBOL(xfrm_state_delete
);
580 #ifdef CONFIG_SECURITY_NETWORK_XFRM
582 xfrm_state_flush_secctx_check(struct net
*net
, u8 proto
, struct xfrm_audit
*audit_info
)
586 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
587 struct hlist_node
*entry
;
588 struct xfrm_state
*x
;
590 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+i
, bydst
) {
591 if (xfrm_id_proto_match(x
->id
.proto
, proto
) &&
592 (err
= security_xfrm_state_delete(x
)) != 0) {
593 xfrm_audit_state_delete(x
, 0,
594 audit_info
->loginuid
,
595 audit_info
->sessionid
,
606 xfrm_state_flush_secctx_check(struct net
*net
, u8 proto
, struct xfrm_audit
*audit_info
)
612 int xfrm_state_flush(struct net
*net
, u8 proto
, struct xfrm_audit
*audit_info
)
614 int i
, err
= 0, cnt
= 0;
616 spin_lock_bh(&xfrm_state_lock
);
617 err
= xfrm_state_flush_secctx_check(net
, proto
, audit_info
);
622 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
623 struct hlist_node
*entry
;
624 struct xfrm_state
*x
;
626 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+i
, bydst
) {
627 if (!xfrm_state_kern(x
) &&
628 xfrm_id_proto_match(x
->id
.proto
, proto
)) {
630 spin_unlock_bh(&xfrm_state_lock
);
632 err
= xfrm_state_delete(x
);
633 xfrm_audit_state_delete(x
, err
? 0 : 1,
634 audit_info
->loginuid
,
635 audit_info
->sessionid
,
641 spin_lock_bh(&xfrm_state_lock
);
650 spin_unlock_bh(&xfrm_state_lock
);
651 wake_up(&net
->xfrm
.km_waitq
);
654 EXPORT_SYMBOL(xfrm_state_flush
);
656 void xfrm_sad_getinfo(struct net
*net
, struct xfrmk_sadinfo
*si
)
658 spin_lock_bh(&xfrm_state_lock
);
659 si
->sadcnt
= net
->xfrm
.state_num
;
660 si
->sadhcnt
= net
->xfrm
.state_hmask
;
661 si
->sadhmcnt
= xfrm_state_hashmax
;
662 spin_unlock_bh(&xfrm_state_lock
);
664 EXPORT_SYMBOL(xfrm_sad_getinfo
);
667 xfrm_init_tempstate(struct xfrm_state
*x
, const struct flowi
*fl
,
668 const struct xfrm_tmpl
*tmpl
,
669 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
670 unsigned short family
)
672 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
675 afinfo
->init_tempsel(&x
->sel
, fl
);
677 if (family
!= tmpl
->encap_family
) {
678 xfrm_state_put_afinfo(afinfo
);
679 afinfo
= xfrm_state_get_afinfo(tmpl
->encap_family
);
683 afinfo
->init_temprop(x
, tmpl
, daddr
, saddr
);
684 xfrm_state_put_afinfo(afinfo
);
688 static struct xfrm_state
*__xfrm_state_lookup(struct net
*net
, u32 mark
,
689 const xfrm_address_t
*daddr
,
690 __be32 spi
, u8 proto
,
691 unsigned short family
)
693 unsigned int h
= xfrm_spi_hash(net
, daddr
, spi
, proto
, family
);
694 struct xfrm_state
*x
;
695 struct hlist_node
*entry
;
697 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_byspi
+h
, byspi
) {
698 if (x
->props
.family
!= family
||
700 x
->id
.proto
!= proto
||
701 xfrm_addr_cmp(&x
->id
.daddr
, daddr
, family
))
704 if ((mark
& x
->mark
.m
) != x
->mark
.v
)
713 static struct xfrm_state
*__xfrm_state_lookup_byaddr(struct net
*net
, u32 mark
,
714 const xfrm_address_t
*daddr
,
715 const xfrm_address_t
*saddr
,
716 u8 proto
, unsigned short family
)
718 unsigned int h
= xfrm_src_hash(net
, daddr
, saddr
, family
);
719 struct xfrm_state
*x
;
720 struct hlist_node
*entry
;
722 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bysrc
+h
, bysrc
) {
723 if (x
->props
.family
!= family
||
724 x
->id
.proto
!= proto
||
725 xfrm_addr_cmp(&x
->id
.daddr
, daddr
, family
) ||
726 xfrm_addr_cmp(&x
->props
.saddr
, saddr
, family
))
729 if ((mark
& x
->mark
.m
) != x
->mark
.v
)
738 static inline struct xfrm_state
*
739 __xfrm_state_locate(struct xfrm_state
*x
, int use_spi
, int family
)
741 struct net
*net
= xs_net(x
);
742 u32 mark
= x
->mark
.v
& x
->mark
.m
;
745 return __xfrm_state_lookup(net
, mark
, &x
->id
.daddr
,
746 x
->id
.spi
, x
->id
.proto
, family
);
748 return __xfrm_state_lookup_byaddr(net
, mark
,
751 x
->id
.proto
, family
);
754 static void xfrm_hash_grow_check(struct net
*net
, int have_hash_collision
)
756 if (have_hash_collision
&&
757 (net
->xfrm
.state_hmask
+ 1) < xfrm_state_hashmax
&&
758 net
->xfrm
.state_num
> net
->xfrm
.state_hmask
)
759 schedule_work(&net
->xfrm
.state_hash_work
);
762 static void xfrm_state_look_at(struct xfrm_policy
*pol
, struct xfrm_state
*x
,
763 const struct flowi
*fl
, unsigned short family
,
764 struct xfrm_state
**best
, int *acq_in_progress
,
768 * 1. There is a valid state with matching selector. Done.
769 * 2. Valid state with inappropriate selector. Skip.
771 * Entering area of "sysdeps".
773 * 3. If state is not valid, selector is temporary, it selects
774 * only session which triggered previous resolution. Key
775 * manager will do something to install a state with proper
778 if (x
->km
.state
== XFRM_STATE_VALID
) {
779 if ((x
->sel
.family
&&
780 !xfrm_selector_match(&x
->sel
, fl
, x
->sel
.family
)) ||
781 !security_xfrm_state_pol_flow_match(x
, pol
, fl
))
785 (*best
)->km
.dying
> x
->km
.dying
||
786 ((*best
)->km
.dying
== x
->km
.dying
&&
787 (*best
)->curlft
.add_time
< x
->curlft
.add_time
))
789 } else if (x
->km
.state
== XFRM_STATE_ACQ
) {
790 *acq_in_progress
= 1;
791 } else if (x
->km
.state
== XFRM_STATE_ERROR
||
792 x
->km
.state
== XFRM_STATE_EXPIRED
) {
793 if (xfrm_selector_match(&x
->sel
, fl
, x
->sel
.family
) &&
794 security_xfrm_state_pol_flow_match(x
, pol
, fl
))
800 xfrm_state_find(const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
801 const struct flowi
*fl
, struct xfrm_tmpl
*tmpl
,
802 struct xfrm_policy
*pol
, int *err
,
803 unsigned short family
)
805 static xfrm_address_t saddr_wildcard
= { };
806 struct net
*net
= xp_net(pol
);
807 unsigned int h
, h_wildcard
;
808 struct hlist_node
*entry
;
809 struct xfrm_state
*x
, *x0
, *to_put
;
810 int acquire_in_progress
= 0;
812 struct xfrm_state
*best
= NULL
;
813 u32 mark
= pol
->mark
.v
& pol
->mark
.m
;
814 unsigned short encap_family
= tmpl
->encap_family
;
818 spin_lock_bh(&xfrm_state_lock
);
819 h
= xfrm_dst_hash(net
, daddr
, saddr
, tmpl
->reqid
, encap_family
);
820 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
821 if (x
->props
.family
== encap_family
&&
822 x
->props
.reqid
== tmpl
->reqid
&&
823 (mark
& x
->mark
.m
) == x
->mark
.v
&&
824 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
825 xfrm_state_addr_check(x
, daddr
, saddr
, encap_family
) &&
826 tmpl
->mode
== x
->props
.mode
&&
827 tmpl
->id
.proto
== x
->id
.proto
&&
828 (tmpl
->id
.spi
== x
->id
.spi
|| !tmpl
->id
.spi
))
829 xfrm_state_look_at(pol
, x
, fl
, encap_family
,
830 &best
, &acquire_in_progress
, &error
);
835 h_wildcard
= xfrm_dst_hash(net
, daddr
, &saddr_wildcard
, tmpl
->reqid
, encap_family
);
836 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h_wildcard
, bydst
) {
837 if (x
->props
.family
== encap_family
&&
838 x
->props
.reqid
== tmpl
->reqid
&&
839 (mark
& x
->mark
.m
) == x
->mark
.v
&&
840 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
841 xfrm_state_addr_check(x
, daddr
, saddr
, encap_family
) &&
842 tmpl
->mode
== x
->props
.mode
&&
843 tmpl
->id
.proto
== x
->id
.proto
&&
844 (tmpl
->id
.spi
== x
->id
.spi
|| !tmpl
->id
.spi
))
845 xfrm_state_look_at(pol
, x
, fl
, encap_family
,
846 &best
, &acquire_in_progress
, &error
);
851 if (!x
&& !error
&& !acquire_in_progress
) {
853 (x0
= __xfrm_state_lookup(net
, mark
, daddr
, tmpl
->id
.spi
,
854 tmpl
->id
.proto
, encap_family
)) != NULL
) {
859 x
= xfrm_state_alloc(net
);
864 /* Initialize temporary state matching only
865 * to current session. */
866 xfrm_init_tempstate(x
, fl
, tmpl
, daddr
, saddr
, family
);
867 memcpy(&x
->mark
, &pol
->mark
, sizeof(x
->mark
));
869 error
= security_xfrm_state_alloc_acquire(x
, pol
->security
, fl
->flowi_secid
);
871 x
->km
.state
= XFRM_STATE_DEAD
;
877 if (km_query(x
, tmpl
, pol
) == 0) {
878 x
->km
.state
= XFRM_STATE_ACQ
;
879 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
880 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
881 h
= xfrm_src_hash(net
, daddr
, saddr
, encap_family
);
882 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
884 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
, encap_family
);
885 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
887 x
->lft
.hard_add_expires_seconds
= net
->xfrm
.sysctl_acq_expires
;
888 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(net
->xfrm
.sysctl_acq_expires
, 0), HRTIMER_MODE_REL
);
889 net
->xfrm
.state_num
++;
890 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
892 x
->km
.state
= XFRM_STATE_DEAD
;
902 *err
= acquire_in_progress
? -EAGAIN
: error
;
903 spin_unlock_bh(&xfrm_state_lock
);
905 xfrm_state_put(to_put
);
910 xfrm_stateonly_find(struct net
*net
, u32 mark
,
911 xfrm_address_t
*daddr
, xfrm_address_t
*saddr
,
912 unsigned short family
, u8 mode
, u8 proto
, u32 reqid
)
915 struct xfrm_state
*rx
= NULL
, *x
= NULL
;
916 struct hlist_node
*entry
;
918 spin_lock(&xfrm_state_lock
);
919 h
= xfrm_dst_hash(net
, daddr
, saddr
, reqid
, family
);
920 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
921 if (x
->props
.family
== family
&&
922 x
->props
.reqid
== reqid
&&
923 (mark
& x
->mark
.m
) == x
->mark
.v
&&
924 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
925 xfrm_state_addr_check(x
, daddr
, saddr
, family
) &&
926 mode
== x
->props
.mode
&&
927 proto
== x
->id
.proto
&&
928 x
->km
.state
== XFRM_STATE_VALID
) {
936 spin_unlock(&xfrm_state_lock
);
941 EXPORT_SYMBOL(xfrm_stateonly_find
);
943 static void __xfrm_state_insert(struct xfrm_state
*x
)
945 struct net
*net
= xs_net(x
);
948 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
950 h
= xfrm_dst_hash(net
, &x
->id
.daddr
, &x
->props
.saddr
,
951 x
->props
.reqid
, x
->props
.family
);
952 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
954 h
= xfrm_src_hash(net
, &x
->id
.daddr
, &x
->props
.saddr
, x
->props
.family
);
955 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
958 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
,
961 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
964 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(1, 0), HRTIMER_MODE_REL
);
965 if (x
->replay_maxage
)
966 mod_timer(&x
->rtimer
, jiffies
+ x
->replay_maxage
);
968 wake_up(&net
->xfrm
.km_waitq
);
970 net
->xfrm
.state_num
++;
972 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
975 /* xfrm_state_lock is held */
976 static void __xfrm_state_bump_genids(struct xfrm_state
*xnew
)
978 struct net
*net
= xs_net(xnew
);
979 unsigned short family
= xnew
->props
.family
;
980 u32 reqid
= xnew
->props
.reqid
;
981 struct xfrm_state
*x
;
982 struct hlist_node
*entry
;
984 u32 mark
= xnew
->mark
.v
& xnew
->mark
.m
;
986 h
= xfrm_dst_hash(net
, &xnew
->id
.daddr
, &xnew
->props
.saddr
, reqid
, family
);
987 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
988 if (x
->props
.family
== family
&&
989 x
->props
.reqid
== reqid
&&
990 (mark
& x
->mark
.m
) == x
->mark
.v
&&
991 !xfrm_addr_cmp(&x
->id
.daddr
, &xnew
->id
.daddr
, family
) &&
992 !xfrm_addr_cmp(&x
->props
.saddr
, &xnew
->props
.saddr
, family
))
997 void xfrm_state_insert(struct xfrm_state
*x
)
999 spin_lock_bh(&xfrm_state_lock
);
1000 __xfrm_state_bump_genids(x
);
1001 __xfrm_state_insert(x
);
1002 spin_unlock_bh(&xfrm_state_lock
);
1004 EXPORT_SYMBOL(xfrm_state_insert
);
1006 /* xfrm_state_lock is held */
1007 static struct xfrm_state
*__find_acq_core(struct net
*net
, struct xfrm_mark
*m
,
1008 unsigned short family
, u8 mode
,
1009 u32 reqid
, u8 proto
,
1010 const xfrm_address_t
*daddr
,
1011 const xfrm_address_t
*saddr
, int create
)
1013 unsigned int h
= xfrm_dst_hash(net
, daddr
, saddr
, reqid
, family
);
1014 struct hlist_node
*entry
;
1015 struct xfrm_state
*x
;
1016 u32 mark
= m
->v
& m
->m
;
1018 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+h
, bydst
) {
1019 if (x
->props
.reqid
!= reqid
||
1020 x
->props
.mode
!= mode
||
1021 x
->props
.family
!= family
||
1022 x
->km
.state
!= XFRM_STATE_ACQ
||
1024 x
->id
.proto
!= proto
||
1025 (mark
& x
->mark
.m
) != x
->mark
.v
||
1026 xfrm_addr_cmp(&x
->id
.daddr
, daddr
, family
) ||
1027 xfrm_addr_cmp(&x
->props
.saddr
, saddr
, family
))
1037 x
= xfrm_state_alloc(net
);
1041 x
->sel
.daddr
.a4
= daddr
->a4
;
1042 x
->sel
.saddr
.a4
= saddr
->a4
;
1043 x
->sel
.prefixlen_d
= 32;
1044 x
->sel
.prefixlen_s
= 32;
1045 x
->props
.saddr
.a4
= saddr
->a4
;
1046 x
->id
.daddr
.a4
= daddr
->a4
;
1050 *(struct in6_addr
*)x
->sel
.daddr
.a6
= *(struct in6_addr
*)daddr
;
1051 *(struct in6_addr
*)x
->sel
.saddr
.a6
= *(struct in6_addr
*)saddr
;
1052 x
->sel
.prefixlen_d
= 128;
1053 x
->sel
.prefixlen_s
= 128;
1054 *(struct in6_addr
*)x
->props
.saddr
.a6
= *(struct in6_addr
*)saddr
;
1055 *(struct in6_addr
*)x
->id
.daddr
.a6
= *(struct in6_addr
*)daddr
;
1059 x
->km
.state
= XFRM_STATE_ACQ
;
1060 x
->id
.proto
= proto
;
1061 x
->props
.family
= family
;
1062 x
->props
.mode
= mode
;
1063 x
->props
.reqid
= reqid
;
1066 x
->lft
.hard_add_expires_seconds
= net
->xfrm
.sysctl_acq_expires
;
1068 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(net
->xfrm
.sysctl_acq_expires
, 0), HRTIMER_MODE_REL
);
1069 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
1070 hlist_add_head(&x
->bydst
, net
->xfrm
.state_bydst
+h
);
1071 h
= xfrm_src_hash(net
, daddr
, saddr
, family
);
1072 hlist_add_head(&x
->bysrc
, net
->xfrm
.state_bysrc
+h
);
1074 net
->xfrm
.state_num
++;
1076 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
1082 static struct xfrm_state
*__xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
);
1084 int xfrm_state_add(struct xfrm_state
*x
)
1086 struct net
*net
= xs_net(x
);
1087 struct xfrm_state
*x1
, *to_put
;
1090 u32 mark
= x
->mark
.v
& x
->mark
.m
;
1091 int use_spi
= xfrm_id_proto_match(x
->id
.proto
, IPSEC_PROTO_ANY
);
1093 family
= x
->props
.family
;
1097 spin_lock_bh(&xfrm_state_lock
);
1099 x1
= __xfrm_state_locate(x
, use_spi
, family
);
1107 if (use_spi
&& x
->km
.seq
) {
1108 x1
= __xfrm_find_acq_byseq(net
, mark
, x
->km
.seq
);
1109 if (x1
&& ((x1
->id
.proto
!= x
->id
.proto
) ||
1110 xfrm_addr_cmp(&x1
->id
.daddr
, &x
->id
.daddr
, family
))) {
1117 x1
= __find_acq_core(net
, &x
->mark
, family
, x
->props
.mode
,
1118 x
->props
.reqid
, x
->id
.proto
,
1119 &x
->id
.daddr
, &x
->props
.saddr
, 0);
1121 __xfrm_state_bump_genids(x
);
1122 __xfrm_state_insert(x
);
1126 spin_unlock_bh(&xfrm_state_lock
);
1129 xfrm_state_delete(x1
);
1134 xfrm_state_put(to_put
);
1138 EXPORT_SYMBOL(xfrm_state_add
);
1140 #ifdef CONFIG_XFRM_MIGRATE
1141 static struct xfrm_state
*xfrm_state_clone(struct xfrm_state
*orig
, int *errp
)
1143 struct net
*net
= xs_net(orig
);
1145 struct xfrm_state
*x
= xfrm_state_alloc(net
);
1149 memcpy(&x
->id
, &orig
->id
, sizeof(x
->id
));
1150 memcpy(&x
->sel
, &orig
->sel
, sizeof(x
->sel
));
1151 memcpy(&x
->lft
, &orig
->lft
, sizeof(x
->lft
));
1152 x
->props
.mode
= orig
->props
.mode
;
1153 x
->props
.replay_window
= orig
->props
.replay_window
;
1154 x
->props
.reqid
= orig
->props
.reqid
;
1155 x
->props
.family
= orig
->props
.family
;
1156 x
->props
.saddr
= orig
->props
.saddr
;
1159 x
->aalg
= xfrm_algo_auth_clone(orig
->aalg
);
1163 x
->props
.aalgo
= orig
->props
.aalgo
;
1166 x
->ealg
= xfrm_algo_clone(orig
->ealg
);
1170 x
->props
.ealgo
= orig
->props
.ealgo
;
1173 x
->calg
= xfrm_algo_clone(orig
->calg
);
1177 x
->props
.calgo
= orig
->props
.calgo
;
1180 x
->encap
= kmemdup(orig
->encap
, sizeof(*x
->encap
), GFP_KERNEL
);
1186 x
->coaddr
= kmemdup(orig
->coaddr
, sizeof(*x
->coaddr
),
1192 if (orig
->replay_esn
) {
1193 err
= xfrm_replay_clone(x
, orig
);
1198 memcpy(&x
->mark
, &orig
->mark
, sizeof(x
->mark
));
1200 err
= xfrm_init_state(x
);
1204 x
->props
.flags
= orig
->props
.flags
;
1206 x
->curlft
.add_time
= orig
->curlft
.add_time
;
1207 x
->km
.state
= orig
->km
.state
;
1208 x
->km
.seq
= orig
->km
.seq
;
1220 /* xfrm_state_lock is held */
1221 struct xfrm_state
* xfrm_migrate_state_find(struct xfrm_migrate
*m
)
1224 struct xfrm_state
*x
;
1225 struct hlist_node
*entry
;
1228 h
= xfrm_dst_hash(&init_net
, &m
->old_daddr
, &m
->old_saddr
,
1229 m
->reqid
, m
->old_family
);
1230 hlist_for_each_entry(x
, entry
, init_net
.xfrm
.state_bydst
+h
, bydst
) {
1231 if (x
->props
.mode
!= m
->mode
||
1232 x
->id
.proto
!= m
->proto
)
1234 if (m
->reqid
&& x
->props
.reqid
!= m
->reqid
)
1236 if (xfrm_addr_cmp(&x
->id
.daddr
, &m
->old_daddr
,
1238 xfrm_addr_cmp(&x
->props
.saddr
, &m
->old_saddr
,
1245 h
= xfrm_src_hash(&init_net
, &m
->old_daddr
, &m
->old_saddr
,
1247 hlist_for_each_entry(x
, entry
, init_net
.xfrm
.state_bysrc
+h
, bysrc
) {
1248 if (x
->props
.mode
!= m
->mode
||
1249 x
->id
.proto
!= m
->proto
)
1251 if (xfrm_addr_cmp(&x
->id
.daddr
, &m
->old_daddr
,
1253 xfrm_addr_cmp(&x
->props
.saddr
, &m
->old_saddr
,
1263 EXPORT_SYMBOL(xfrm_migrate_state_find
);
1265 struct xfrm_state
* xfrm_state_migrate(struct xfrm_state
*x
,
1266 struct xfrm_migrate
*m
)
1268 struct xfrm_state
*xc
;
1271 xc
= xfrm_state_clone(x
, &err
);
1275 memcpy(&xc
->id
.daddr
, &m
->new_daddr
, sizeof(xc
->id
.daddr
));
1276 memcpy(&xc
->props
.saddr
, &m
->new_saddr
, sizeof(xc
->props
.saddr
));
1279 if (!xfrm_addr_cmp(&x
->id
.daddr
, &m
->new_daddr
, m
->new_family
)) {
1280 /* a care is needed when the destination address of the
1281 state is to be updated as it is a part of triplet */
1282 xfrm_state_insert(xc
);
1284 if ((err
= xfrm_state_add(xc
)) < 0)
1293 EXPORT_SYMBOL(xfrm_state_migrate
);
1296 int xfrm_state_update(struct xfrm_state
*x
)
1298 struct xfrm_state
*x1
, *to_put
;
1300 int use_spi
= xfrm_id_proto_match(x
->id
.proto
, IPSEC_PROTO_ANY
);
1304 spin_lock_bh(&xfrm_state_lock
);
1305 x1
= __xfrm_state_locate(x
, use_spi
, x
->props
.family
);
1311 if (xfrm_state_kern(x1
)) {
1317 if (x1
->km
.state
== XFRM_STATE_ACQ
) {
1318 __xfrm_state_insert(x
);
1324 spin_unlock_bh(&xfrm_state_lock
);
1327 xfrm_state_put(to_put
);
1333 xfrm_state_delete(x1
);
1339 spin_lock_bh(&x1
->lock
);
1340 if (likely(x1
->km
.state
== XFRM_STATE_VALID
)) {
1341 if (x
->encap
&& x1
->encap
)
1342 memcpy(x1
->encap
, x
->encap
, sizeof(*x1
->encap
));
1343 if (x
->coaddr
&& x1
->coaddr
) {
1344 memcpy(x1
->coaddr
, x
->coaddr
, sizeof(*x1
->coaddr
));
1346 if (!use_spi
&& memcmp(&x1
->sel
, &x
->sel
, sizeof(x1
->sel
)))
1347 memcpy(&x1
->sel
, &x
->sel
, sizeof(x1
->sel
));
1348 memcpy(&x1
->lft
, &x
->lft
, sizeof(x1
->lft
));
1351 tasklet_hrtimer_start(&x1
->mtimer
, ktime_set(1, 0), HRTIMER_MODE_REL
);
1352 if (x1
->curlft
.use_time
)
1353 xfrm_state_check_expire(x1
);
1356 x
->km
.state
= XFRM_STATE_DEAD
;
1357 __xfrm_state_put(x
);
1359 spin_unlock_bh(&x1
->lock
);
1365 EXPORT_SYMBOL(xfrm_state_update
);
1367 int xfrm_state_check_expire(struct xfrm_state
*x
)
1369 if (!x
->curlft
.use_time
)
1370 x
->curlft
.use_time
= get_seconds();
1372 if (x
->curlft
.bytes
>= x
->lft
.hard_byte_limit
||
1373 x
->curlft
.packets
>= x
->lft
.hard_packet_limit
) {
1374 x
->km
.state
= XFRM_STATE_EXPIRED
;
1375 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(0,0), HRTIMER_MODE_REL
);
1380 (x
->curlft
.bytes
>= x
->lft
.soft_byte_limit
||
1381 x
->curlft
.packets
>= x
->lft
.soft_packet_limit
)) {
1383 km_state_expired(x
, 0, 0);
1387 EXPORT_SYMBOL(xfrm_state_check_expire
);
1390 xfrm_state_lookup(struct net
*net
, u32 mark
, const xfrm_address_t
*daddr
, __be32 spi
,
1391 u8 proto
, unsigned short family
)
1393 struct xfrm_state
*x
;
1395 spin_lock_bh(&xfrm_state_lock
);
1396 x
= __xfrm_state_lookup(net
, mark
, daddr
, spi
, proto
, family
);
1397 spin_unlock_bh(&xfrm_state_lock
);
1400 EXPORT_SYMBOL(xfrm_state_lookup
);
1403 xfrm_state_lookup_byaddr(struct net
*net
, u32 mark
,
1404 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
1405 u8 proto
, unsigned short family
)
1407 struct xfrm_state
*x
;
1409 spin_lock_bh(&xfrm_state_lock
);
1410 x
= __xfrm_state_lookup_byaddr(net
, mark
, daddr
, saddr
, proto
, family
);
1411 spin_unlock_bh(&xfrm_state_lock
);
1414 EXPORT_SYMBOL(xfrm_state_lookup_byaddr
);
1417 xfrm_find_acq(struct net
*net
, struct xfrm_mark
*mark
, u8 mode
, u32 reqid
, u8 proto
,
1418 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
1419 int create
, unsigned short family
)
1421 struct xfrm_state
*x
;
1423 spin_lock_bh(&xfrm_state_lock
);
1424 x
= __find_acq_core(net
, mark
, family
, mode
, reqid
, proto
, daddr
, saddr
, create
);
1425 spin_unlock_bh(&xfrm_state_lock
);
1429 EXPORT_SYMBOL(xfrm_find_acq
);
1431 #ifdef CONFIG_XFRM_SUB_POLICY
1433 xfrm_tmpl_sort(struct xfrm_tmpl
**dst
, struct xfrm_tmpl
**src
, int n
,
1434 unsigned short family
)
1437 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
1439 return -EAFNOSUPPORT
;
1441 spin_lock_bh(&xfrm_state_lock
);
1442 if (afinfo
->tmpl_sort
)
1443 err
= afinfo
->tmpl_sort(dst
, src
, n
);
1444 spin_unlock_bh(&xfrm_state_lock
);
1445 xfrm_state_put_afinfo(afinfo
);
1448 EXPORT_SYMBOL(xfrm_tmpl_sort
);
1451 xfrm_state_sort(struct xfrm_state
**dst
, struct xfrm_state
**src
, int n
,
1452 unsigned short family
)
1455 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
1457 return -EAFNOSUPPORT
;
1459 spin_lock_bh(&xfrm_state_lock
);
1460 if (afinfo
->state_sort
)
1461 err
= afinfo
->state_sort(dst
, src
, n
);
1462 spin_unlock_bh(&xfrm_state_lock
);
1463 xfrm_state_put_afinfo(afinfo
);
1466 EXPORT_SYMBOL(xfrm_state_sort
);
1469 /* Silly enough, but I'm lazy to build resolution list */
1471 static struct xfrm_state
*__xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
)
1475 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
1476 struct hlist_node
*entry
;
1477 struct xfrm_state
*x
;
1479 hlist_for_each_entry(x
, entry
, net
->xfrm
.state_bydst
+i
, bydst
) {
1480 if (x
->km
.seq
== seq
&&
1481 (mark
& x
->mark
.m
) == x
->mark
.v
&&
1482 x
->km
.state
== XFRM_STATE_ACQ
) {
1491 struct xfrm_state
*xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
)
1493 struct xfrm_state
*x
;
1495 spin_lock_bh(&xfrm_state_lock
);
1496 x
= __xfrm_find_acq_byseq(net
, mark
, seq
);
1497 spin_unlock_bh(&xfrm_state_lock
);
1500 EXPORT_SYMBOL(xfrm_find_acq_byseq
);
1502 u32
xfrm_get_acqseq(void)
1505 static atomic_t acqseq
;
1508 res
= atomic_inc_return(&acqseq
);
1513 EXPORT_SYMBOL(xfrm_get_acqseq
);
1515 int xfrm_alloc_spi(struct xfrm_state
*x
, u32 low
, u32 high
)
1517 struct net
*net
= xs_net(x
);
1519 struct xfrm_state
*x0
;
1521 __be32 minspi
= htonl(low
);
1522 __be32 maxspi
= htonl(high
);
1523 u32 mark
= x
->mark
.v
& x
->mark
.m
;
1525 spin_lock_bh(&x
->lock
);
1526 if (x
->km
.state
== XFRM_STATE_DEAD
)
1535 if (minspi
== maxspi
) {
1536 x0
= xfrm_state_lookup(net
, mark
, &x
->id
.daddr
, minspi
, x
->id
.proto
, x
->props
.family
);
1544 for (h
=0; h
<high
-low
+1; h
++) {
1545 spi
= low
+ net_random()%(high
-low
+1);
1546 x0
= xfrm_state_lookup(net
, mark
, &x
->id
.daddr
, htonl(spi
), x
->id
.proto
, x
->props
.family
);
1548 x
->id
.spi
= htonl(spi
);
1555 spin_lock_bh(&xfrm_state_lock
);
1556 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
, x
->props
.family
);
1557 hlist_add_head(&x
->byspi
, net
->xfrm
.state_byspi
+h
);
1558 spin_unlock_bh(&xfrm_state_lock
);
1564 spin_unlock_bh(&x
->lock
);
1568 EXPORT_SYMBOL(xfrm_alloc_spi
);
1570 int xfrm_state_walk(struct net
*net
, struct xfrm_state_walk
*walk
,
1571 int (*func
)(struct xfrm_state
*, int, void*),
1574 struct xfrm_state
*state
;
1575 struct xfrm_state_walk
*x
;
1578 if (walk
->seq
!= 0 && list_empty(&walk
->all
))
1581 spin_lock_bh(&xfrm_state_lock
);
1582 if (list_empty(&walk
->all
))
1583 x
= list_first_entry(&net
->xfrm
.state_all
, struct xfrm_state_walk
, all
);
1585 x
= list_entry(&walk
->all
, struct xfrm_state_walk
, all
);
1586 list_for_each_entry_from(x
, &net
->xfrm
.state_all
, all
) {
1587 if (x
->state
== XFRM_STATE_DEAD
)
1589 state
= container_of(x
, struct xfrm_state
, km
);
1590 if (!xfrm_id_proto_match(state
->id
.proto
, walk
->proto
))
1592 err
= func(state
, walk
->seq
, data
);
1594 list_move_tail(&walk
->all
, &x
->all
);
1599 if (walk
->seq
== 0) {
1603 list_del_init(&walk
->all
);
1605 spin_unlock_bh(&xfrm_state_lock
);
1608 EXPORT_SYMBOL(xfrm_state_walk
);
1610 void xfrm_state_walk_init(struct xfrm_state_walk
*walk
, u8 proto
)
1612 INIT_LIST_HEAD(&walk
->all
);
1613 walk
->proto
= proto
;
1614 walk
->state
= XFRM_STATE_DEAD
;
1617 EXPORT_SYMBOL(xfrm_state_walk_init
);
1619 void xfrm_state_walk_done(struct xfrm_state_walk
*walk
)
1621 if (list_empty(&walk
->all
))
1624 spin_lock_bh(&xfrm_state_lock
);
1625 list_del(&walk
->all
);
1626 spin_unlock_bh(&xfrm_state_lock
);
1628 EXPORT_SYMBOL(xfrm_state_walk_done
);
1630 static void xfrm_replay_timer_handler(unsigned long data
)
1632 struct xfrm_state
*x
= (struct xfrm_state
*)data
;
1634 spin_lock(&x
->lock
);
1636 if (x
->km
.state
== XFRM_STATE_VALID
) {
1637 if (xfrm_aevent_is_on(xs_net(x
)))
1638 x
->repl
->notify(x
, XFRM_REPLAY_TIMEOUT
);
1640 x
->xflags
|= XFRM_TIME_DEFER
;
1643 spin_unlock(&x
->lock
);
1646 static LIST_HEAD(xfrm_km_list
);
1647 static DEFINE_RWLOCK(xfrm_km_lock
);
1649 void km_policy_notify(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
1651 struct xfrm_mgr
*km
;
1653 read_lock(&xfrm_km_lock
);
1654 list_for_each_entry(km
, &xfrm_km_list
, list
)
1655 if (km
->notify_policy
)
1656 km
->notify_policy(xp
, dir
, c
);
1657 read_unlock(&xfrm_km_lock
);
1660 void km_state_notify(struct xfrm_state
*x
, const struct km_event
*c
)
1662 struct xfrm_mgr
*km
;
1663 read_lock(&xfrm_km_lock
);
1664 list_for_each_entry(km
, &xfrm_km_list
, list
)
1667 read_unlock(&xfrm_km_lock
);
1670 EXPORT_SYMBOL(km_policy_notify
);
1671 EXPORT_SYMBOL(km_state_notify
);
1673 void km_state_expired(struct xfrm_state
*x
, int hard
, u32 portid
)
1675 struct net
*net
= xs_net(x
);
1680 c
.event
= XFRM_MSG_EXPIRE
;
1681 km_state_notify(x
, &c
);
1684 wake_up(&net
->xfrm
.km_waitq
);
1687 EXPORT_SYMBOL(km_state_expired
);
1689 * We send to all registered managers regardless of failure
1690 * We are happy with one success
1692 int km_query(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*pol
)
1694 int err
= -EINVAL
, acqret
;
1695 struct xfrm_mgr
*km
;
1697 read_lock(&xfrm_km_lock
);
1698 list_for_each_entry(km
, &xfrm_km_list
, list
) {
1699 acqret
= km
->acquire(x
, t
, pol
);
1703 read_unlock(&xfrm_km_lock
);
1706 EXPORT_SYMBOL(km_query
);
1708 int km_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
1711 struct xfrm_mgr
*km
;
1713 read_lock(&xfrm_km_lock
);
1714 list_for_each_entry(km
, &xfrm_km_list
, list
) {
1715 if (km
->new_mapping
)
1716 err
= km
->new_mapping(x
, ipaddr
, sport
);
1720 read_unlock(&xfrm_km_lock
);
1723 EXPORT_SYMBOL(km_new_mapping
);
1725 void km_policy_expired(struct xfrm_policy
*pol
, int dir
, int hard
, u32 portid
)
1727 struct net
*net
= xp_net(pol
);
1732 c
.event
= XFRM_MSG_POLEXPIRE
;
1733 km_policy_notify(pol
, dir
, &c
);
1736 wake_up(&net
->xfrm
.km_waitq
);
1738 EXPORT_SYMBOL(km_policy_expired
);
1740 #ifdef CONFIG_XFRM_MIGRATE
1741 int km_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
1742 const struct xfrm_migrate
*m
, int num_migrate
,
1743 const struct xfrm_kmaddress
*k
)
1747 struct xfrm_mgr
*km
;
1749 read_lock(&xfrm_km_lock
);
1750 list_for_each_entry(km
, &xfrm_km_list
, list
) {
1752 ret
= km
->migrate(sel
, dir
, type
, m
, num_migrate
, k
);
1757 read_unlock(&xfrm_km_lock
);
1760 EXPORT_SYMBOL(km_migrate
);
1763 int km_report(struct net
*net
, u8 proto
, struct xfrm_selector
*sel
, xfrm_address_t
*addr
)
1767 struct xfrm_mgr
*km
;
1769 read_lock(&xfrm_km_lock
);
1770 list_for_each_entry(km
, &xfrm_km_list
, list
) {
1772 ret
= km
->report(net
, proto
, sel
, addr
);
1777 read_unlock(&xfrm_km_lock
);
1780 EXPORT_SYMBOL(km_report
);
1782 int xfrm_user_policy(struct sock
*sk
, int optname
, u8 __user
*optval
, int optlen
)
1786 struct xfrm_mgr
*km
;
1787 struct xfrm_policy
*pol
= NULL
;
1789 if (optlen
<= 0 || optlen
> PAGE_SIZE
)
1792 data
= kmalloc(optlen
, GFP_KERNEL
);
1797 if (copy_from_user(data
, optval
, optlen
))
1801 read_lock(&xfrm_km_lock
);
1802 list_for_each_entry(km
, &xfrm_km_list
, list
) {
1803 pol
= km
->compile_policy(sk
, optname
, data
,
1808 read_unlock(&xfrm_km_lock
);
1811 xfrm_sk_policy_insert(sk
, err
, pol
);
1820 EXPORT_SYMBOL(xfrm_user_policy
);
1822 int xfrm_register_km(struct xfrm_mgr
*km
)
1824 write_lock_bh(&xfrm_km_lock
);
1825 list_add_tail(&km
->list
, &xfrm_km_list
);
1826 write_unlock_bh(&xfrm_km_lock
);
1829 EXPORT_SYMBOL(xfrm_register_km
);
1831 int xfrm_unregister_km(struct xfrm_mgr
*km
)
1833 write_lock_bh(&xfrm_km_lock
);
1834 list_del(&km
->list
);
1835 write_unlock_bh(&xfrm_km_lock
);
1838 EXPORT_SYMBOL(xfrm_unregister_km
);
1840 int xfrm_state_register_afinfo(struct xfrm_state_afinfo
*afinfo
)
1843 if (unlikely(afinfo
== NULL
))
1845 if (unlikely(afinfo
->family
>= NPROTO
))
1846 return -EAFNOSUPPORT
;
1847 spin_lock_bh(&xfrm_state_afinfo_lock
);
1848 if (unlikely(xfrm_state_afinfo
[afinfo
->family
] != NULL
))
1851 rcu_assign_pointer(xfrm_state_afinfo
[afinfo
->family
], afinfo
);
1852 spin_unlock_bh(&xfrm_state_afinfo_lock
);
1855 EXPORT_SYMBOL(xfrm_state_register_afinfo
);
1857 int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo
*afinfo
)
1860 if (unlikely(afinfo
== NULL
))
1862 if (unlikely(afinfo
->family
>= NPROTO
))
1863 return -EAFNOSUPPORT
;
1864 spin_lock_bh(&xfrm_state_afinfo_lock
);
1865 if (likely(xfrm_state_afinfo
[afinfo
->family
] != NULL
)) {
1866 if (unlikely(xfrm_state_afinfo
[afinfo
->family
] != afinfo
))
1869 RCU_INIT_POINTER(xfrm_state_afinfo
[afinfo
->family
], NULL
);
1871 spin_unlock_bh(&xfrm_state_afinfo_lock
);
1875 EXPORT_SYMBOL(xfrm_state_unregister_afinfo
);
1877 static struct xfrm_state_afinfo
*xfrm_state_get_afinfo(unsigned int family
)
1879 struct xfrm_state_afinfo
*afinfo
;
1880 if (unlikely(family
>= NPROTO
))
1883 afinfo
= rcu_dereference(xfrm_state_afinfo
[family
]);
1884 if (unlikely(!afinfo
))
1889 static void xfrm_state_put_afinfo(struct xfrm_state_afinfo
*afinfo
)
1894 /* Temporarily located here until net/xfrm/xfrm_tunnel.c is created */
1895 void xfrm_state_delete_tunnel(struct xfrm_state
*x
)
1898 struct xfrm_state
*t
= x
->tunnel
;
1900 if (atomic_read(&t
->tunnel_users
) == 2)
1901 xfrm_state_delete(t
);
1902 atomic_dec(&t
->tunnel_users
);
1907 EXPORT_SYMBOL(xfrm_state_delete_tunnel
);
1909 int xfrm_state_mtu(struct xfrm_state
*x
, int mtu
)
1913 spin_lock_bh(&x
->lock
);
1914 if (x
->km
.state
== XFRM_STATE_VALID
&&
1915 x
->type
&& x
->type
->get_mtu
)
1916 res
= x
->type
->get_mtu(x
, mtu
);
1918 res
= mtu
- x
->props
.header_len
;
1919 spin_unlock_bh(&x
->lock
);
1923 int __xfrm_init_state(struct xfrm_state
*x
, bool init_replay
)
1925 struct xfrm_state_afinfo
*afinfo
;
1926 struct xfrm_mode
*inner_mode
;
1927 int family
= x
->props
.family
;
1930 err
= -EAFNOSUPPORT
;
1931 afinfo
= xfrm_state_get_afinfo(family
);
1936 if (afinfo
->init_flags
)
1937 err
= afinfo
->init_flags(x
);
1939 xfrm_state_put_afinfo(afinfo
);
1944 err
= -EPROTONOSUPPORT
;
1946 if (x
->sel
.family
!= AF_UNSPEC
) {
1947 inner_mode
= xfrm_get_mode(x
->props
.mode
, x
->sel
.family
);
1948 if (inner_mode
== NULL
)
1951 if (!(inner_mode
->flags
& XFRM_MODE_FLAG_TUNNEL
) &&
1952 family
!= x
->sel
.family
) {
1953 xfrm_put_mode(inner_mode
);
1957 x
->inner_mode
= inner_mode
;
1959 struct xfrm_mode
*inner_mode_iaf
;
1960 int iafamily
= AF_INET
;
1962 inner_mode
= xfrm_get_mode(x
->props
.mode
, x
->props
.family
);
1963 if (inner_mode
== NULL
)
1966 if (!(inner_mode
->flags
& XFRM_MODE_FLAG_TUNNEL
)) {
1967 xfrm_put_mode(inner_mode
);
1970 x
->inner_mode
= inner_mode
;
1972 if (x
->props
.family
== AF_INET
)
1973 iafamily
= AF_INET6
;
1975 inner_mode_iaf
= xfrm_get_mode(x
->props
.mode
, iafamily
);
1976 if (inner_mode_iaf
) {
1977 if (inner_mode_iaf
->flags
& XFRM_MODE_FLAG_TUNNEL
)
1978 x
->inner_mode_iaf
= inner_mode_iaf
;
1980 xfrm_put_mode(inner_mode_iaf
);
1984 x
->type
= xfrm_get_type(x
->id
.proto
, family
);
1985 if (x
->type
== NULL
)
1988 err
= x
->type
->init_state(x
);
1992 x
->outer_mode
= xfrm_get_mode(x
->props
.mode
, family
);
1993 if (x
->outer_mode
== NULL
) {
1994 err
= -EPROTONOSUPPORT
;
1999 err
= xfrm_init_replay(x
);
2004 x
->km
.state
= XFRM_STATE_VALID
;
2010 EXPORT_SYMBOL(__xfrm_init_state
);
2012 int xfrm_init_state(struct xfrm_state
*x
)
2014 return __xfrm_init_state(x
, true);
2017 EXPORT_SYMBOL(xfrm_init_state
);
2019 int __net_init
xfrm_state_init(struct net
*net
)
2023 INIT_LIST_HEAD(&net
->xfrm
.state_all
);
2025 sz
= sizeof(struct hlist_head
) * 8;
2027 net
->xfrm
.state_bydst
= xfrm_hash_alloc(sz
);
2028 if (!net
->xfrm
.state_bydst
)
2030 net
->xfrm
.state_bysrc
= xfrm_hash_alloc(sz
);
2031 if (!net
->xfrm
.state_bysrc
)
2033 net
->xfrm
.state_byspi
= xfrm_hash_alloc(sz
);
2034 if (!net
->xfrm
.state_byspi
)
2036 net
->xfrm
.state_hmask
= ((sz
/ sizeof(struct hlist_head
)) - 1);
2038 net
->xfrm
.state_num
= 0;
2039 INIT_WORK(&net
->xfrm
.state_hash_work
, xfrm_hash_resize
);
2040 INIT_HLIST_HEAD(&net
->xfrm
.state_gc_list
);
2041 INIT_WORK(&net
->xfrm
.state_gc_work
, xfrm_state_gc_task
);
2042 init_waitqueue_head(&net
->xfrm
.km_waitq
);
2046 xfrm_hash_free(net
->xfrm
.state_bysrc
, sz
);
2048 xfrm_hash_free(net
->xfrm
.state_bydst
, sz
);
2053 void xfrm_state_fini(struct net
*net
)
2055 struct xfrm_audit audit_info
;
2058 flush_work(&net
->xfrm
.state_hash_work
);
2059 audit_info
.loginuid
= INVALID_UID
;
2060 audit_info
.sessionid
= -1;
2061 audit_info
.secid
= 0;
2062 xfrm_state_flush(net
, IPSEC_PROTO_ANY
, &audit_info
);
2063 flush_work(&net
->xfrm
.state_gc_work
);
2065 WARN_ON(!list_empty(&net
->xfrm
.state_all
));
2067 sz
= (net
->xfrm
.state_hmask
+ 1) * sizeof(struct hlist_head
);
2068 WARN_ON(!hlist_empty(net
->xfrm
.state_byspi
));
2069 xfrm_hash_free(net
->xfrm
.state_byspi
, sz
);
2070 WARN_ON(!hlist_empty(net
->xfrm
.state_bysrc
));
2071 xfrm_hash_free(net
->xfrm
.state_bysrc
, sz
);
2072 WARN_ON(!hlist_empty(net
->xfrm
.state_bydst
));
2073 xfrm_hash_free(net
->xfrm
.state_bydst
, sz
);
2076 #ifdef CONFIG_AUDITSYSCALL
2077 static void xfrm_audit_helper_sainfo(struct xfrm_state
*x
,
2078 struct audit_buffer
*audit_buf
)
2080 struct xfrm_sec_ctx
*ctx
= x
->security
;
2081 u32 spi
= ntohl(x
->id
.spi
);
2084 audit_log_format(audit_buf
, " sec_alg=%u sec_doi=%u sec_obj=%s",
2085 ctx
->ctx_alg
, ctx
->ctx_doi
, ctx
->ctx_str
);
2087 switch(x
->props
.family
) {
2089 audit_log_format(audit_buf
, " src=%pI4 dst=%pI4",
2090 &x
->props
.saddr
.a4
, &x
->id
.daddr
.a4
);
2093 audit_log_format(audit_buf
, " src=%pI6 dst=%pI6",
2094 x
->props
.saddr
.a6
, x
->id
.daddr
.a6
);
2098 audit_log_format(audit_buf
, " spi=%u(0x%x)", spi
, spi
);
2101 static void xfrm_audit_helper_pktinfo(struct sk_buff
*skb
, u16 family
,
2102 struct audit_buffer
*audit_buf
)
2104 const struct iphdr
*iph4
;
2105 const struct ipv6hdr
*iph6
;
2110 audit_log_format(audit_buf
, " src=%pI4 dst=%pI4",
2111 &iph4
->saddr
, &iph4
->daddr
);
2114 iph6
= ipv6_hdr(skb
);
2115 audit_log_format(audit_buf
,
2116 " src=%pI6 dst=%pI6 flowlbl=0x%x%02x%02x",
2117 &iph6
->saddr
,&iph6
->daddr
,
2118 iph6
->flow_lbl
[0] & 0x0f,
2125 void xfrm_audit_state_add(struct xfrm_state
*x
, int result
,
2126 kuid_t auid
, u32 sessionid
, u32 secid
)
2128 struct audit_buffer
*audit_buf
;
2130 audit_buf
= xfrm_audit_start("SAD-add");
2131 if (audit_buf
== NULL
)
2133 xfrm_audit_helper_usrinfo(auid
, sessionid
, secid
, audit_buf
);
2134 xfrm_audit_helper_sainfo(x
, audit_buf
);
2135 audit_log_format(audit_buf
, " res=%u", result
);
2136 audit_log_end(audit_buf
);
2138 EXPORT_SYMBOL_GPL(xfrm_audit_state_add
);
2140 void xfrm_audit_state_delete(struct xfrm_state
*x
, int result
,
2141 kuid_t auid
, u32 sessionid
, u32 secid
)
2143 struct audit_buffer
*audit_buf
;
2145 audit_buf
= xfrm_audit_start("SAD-delete");
2146 if (audit_buf
== NULL
)
2148 xfrm_audit_helper_usrinfo(auid
, sessionid
, secid
, audit_buf
);
2149 xfrm_audit_helper_sainfo(x
, audit_buf
);
2150 audit_log_format(audit_buf
, " res=%u", result
);
2151 audit_log_end(audit_buf
);
2153 EXPORT_SYMBOL_GPL(xfrm_audit_state_delete
);
2155 void xfrm_audit_state_replay_overflow(struct xfrm_state
*x
,
2156 struct sk_buff
*skb
)
2158 struct audit_buffer
*audit_buf
;
2161 audit_buf
= xfrm_audit_start("SA-replay-overflow");
2162 if (audit_buf
== NULL
)
2164 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2165 /* don't record the sequence number because it's inherent in this kind
2166 * of audit message */
2167 spi
= ntohl(x
->id
.spi
);
2168 audit_log_format(audit_buf
, " spi=%u(0x%x)", spi
, spi
);
2169 audit_log_end(audit_buf
);
2171 EXPORT_SYMBOL_GPL(xfrm_audit_state_replay_overflow
);
2173 void xfrm_audit_state_replay(struct xfrm_state
*x
,
2174 struct sk_buff
*skb
, __be32 net_seq
)
2176 struct audit_buffer
*audit_buf
;
2179 audit_buf
= xfrm_audit_start("SA-replayed-pkt");
2180 if (audit_buf
== NULL
)
2182 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2183 spi
= ntohl(x
->id
.spi
);
2184 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2185 spi
, spi
, ntohl(net_seq
));
2186 audit_log_end(audit_buf
);
2188 EXPORT_SYMBOL_GPL(xfrm_audit_state_replay
);
2190 void xfrm_audit_state_notfound_simple(struct sk_buff
*skb
, u16 family
)
2192 struct audit_buffer
*audit_buf
;
2194 audit_buf
= xfrm_audit_start("SA-notfound");
2195 if (audit_buf
== NULL
)
2197 xfrm_audit_helper_pktinfo(skb
, family
, audit_buf
);
2198 audit_log_end(audit_buf
);
2200 EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound_simple
);
2202 void xfrm_audit_state_notfound(struct sk_buff
*skb
, u16 family
,
2203 __be32 net_spi
, __be32 net_seq
)
2205 struct audit_buffer
*audit_buf
;
2208 audit_buf
= xfrm_audit_start("SA-notfound");
2209 if (audit_buf
== NULL
)
2211 xfrm_audit_helper_pktinfo(skb
, family
, audit_buf
);
2212 spi
= ntohl(net_spi
);
2213 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2214 spi
, spi
, ntohl(net_seq
));
2215 audit_log_end(audit_buf
);
2217 EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound
);
2219 void xfrm_audit_state_icvfail(struct xfrm_state
*x
,
2220 struct sk_buff
*skb
, u8 proto
)
2222 struct audit_buffer
*audit_buf
;
2226 audit_buf
= xfrm_audit_start("SA-icv-failure");
2227 if (audit_buf
== NULL
)
2229 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2230 if (xfrm_parse_spi(skb
, proto
, &net_spi
, &net_seq
) == 0) {
2231 u32 spi
= ntohl(net_spi
);
2232 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2233 spi
, spi
, ntohl(net_seq
));
2235 audit_log_end(audit_buf
);
2237 EXPORT_SYMBOL_GPL(xfrm_audit_state_icvfail
);
2238 #endif /* CONFIG_AUDITSYSCALL */