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 <linux/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 #define xfrm_state_deref_prot(table, net) \
32 rcu_dereference_protected((table), lockdep_is_held(&(net)->xfrm.xfrm_state_lock))
34 static void xfrm_state_gc_task(struct work_struct
*work
);
36 /* Each xfrm_state may be linked to two tables:
38 1. Hash table by (spi,daddr,ah/esp) to find SA by SPI. (input,ctl)
39 2. Hash table by (daddr,family,reqid) to find what SAs exist for given
40 destination/tunnel endpoint. (output)
43 static unsigned int xfrm_state_hashmax __read_mostly
= 1 * 1024 * 1024;
44 static __read_mostly seqcount_t xfrm_state_hash_generation
= SEQCNT_ZERO(xfrm_state_hash_generation
);
46 static DECLARE_WORK(xfrm_state_gc_work
, xfrm_state_gc_task
);
47 static HLIST_HEAD(xfrm_state_gc_list
);
49 static inline bool xfrm_state_hold_rcu(struct xfrm_state __rcu
*x
)
51 return atomic_inc_not_zero(&x
->refcnt
);
54 static inline unsigned int xfrm_dst_hash(struct net
*net
,
55 const xfrm_address_t
*daddr
,
56 const xfrm_address_t
*saddr
,
58 unsigned short family
)
60 return __xfrm_dst_hash(daddr
, saddr
, reqid
, family
, net
->xfrm
.state_hmask
);
63 static inline unsigned int xfrm_src_hash(struct net
*net
,
64 const xfrm_address_t
*daddr
,
65 const xfrm_address_t
*saddr
,
66 unsigned short family
)
68 return __xfrm_src_hash(daddr
, saddr
, family
, net
->xfrm
.state_hmask
);
71 static inline unsigned int
72 xfrm_spi_hash(struct net
*net
, const xfrm_address_t
*daddr
,
73 __be32 spi
, u8 proto
, unsigned short family
)
75 return __xfrm_spi_hash(daddr
, spi
, proto
, family
, net
->xfrm
.state_hmask
);
78 static void xfrm_hash_transfer(struct hlist_head
*list
,
79 struct hlist_head
*ndsttable
,
80 struct hlist_head
*nsrctable
,
81 struct hlist_head
*nspitable
,
82 unsigned int nhashmask
)
84 struct hlist_node
*tmp
;
87 hlist_for_each_entry_safe(x
, tmp
, list
, bydst
) {
90 h
= __xfrm_dst_hash(&x
->id
.daddr
, &x
->props
.saddr
,
91 x
->props
.reqid
, x
->props
.family
,
93 hlist_add_head_rcu(&x
->bydst
, ndsttable
+ h
);
95 h
= __xfrm_src_hash(&x
->id
.daddr
, &x
->props
.saddr
,
98 hlist_add_head_rcu(&x
->bysrc
, nsrctable
+ h
);
101 h
= __xfrm_spi_hash(&x
->id
.daddr
, x
->id
.spi
,
102 x
->id
.proto
, x
->props
.family
,
104 hlist_add_head_rcu(&x
->byspi
, nspitable
+ h
);
109 static unsigned long xfrm_hash_new_size(unsigned int state_hmask
)
111 return ((state_hmask
+ 1) << 1) * sizeof(struct hlist_head
);
114 static void xfrm_hash_resize(struct work_struct
*work
)
116 struct net
*net
= container_of(work
, struct net
, xfrm
.state_hash_work
);
117 struct hlist_head
*ndst
, *nsrc
, *nspi
, *odst
, *osrc
, *ospi
;
118 unsigned long nsize
, osize
;
119 unsigned int nhashmask
, ohashmask
;
122 nsize
= xfrm_hash_new_size(net
->xfrm
.state_hmask
);
123 ndst
= xfrm_hash_alloc(nsize
);
126 nsrc
= xfrm_hash_alloc(nsize
);
128 xfrm_hash_free(ndst
, nsize
);
131 nspi
= xfrm_hash_alloc(nsize
);
133 xfrm_hash_free(ndst
, nsize
);
134 xfrm_hash_free(nsrc
, nsize
);
138 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
139 write_seqcount_begin(&xfrm_state_hash_generation
);
141 nhashmask
= (nsize
/ sizeof(struct hlist_head
)) - 1U;
142 odst
= xfrm_state_deref_prot(net
->xfrm
.state_bydst
, net
);
143 for (i
= net
->xfrm
.state_hmask
; i
>= 0; i
--)
144 xfrm_hash_transfer(odst
+ i
, ndst
, nsrc
, nspi
, nhashmask
);
146 osrc
= xfrm_state_deref_prot(net
->xfrm
.state_bysrc
, net
);
147 ospi
= xfrm_state_deref_prot(net
->xfrm
.state_byspi
, net
);
148 ohashmask
= net
->xfrm
.state_hmask
;
150 rcu_assign_pointer(net
->xfrm
.state_bydst
, ndst
);
151 rcu_assign_pointer(net
->xfrm
.state_bysrc
, nsrc
);
152 rcu_assign_pointer(net
->xfrm
.state_byspi
, nspi
);
153 net
->xfrm
.state_hmask
= nhashmask
;
155 write_seqcount_end(&xfrm_state_hash_generation
);
156 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
158 osize
= (ohashmask
+ 1) * sizeof(struct hlist_head
);
162 xfrm_hash_free(odst
, osize
);
163 xfrm_hash_free(osrc
, osize
);
164 xfrm_hash_free(ospi
, osize
);
167 static DEFINE_SPINLOCK(xfrm_state_afinfo_lock
);
168 static struct xfrm_state_afinfo __rcu
*xfrm_state_afinfo
[NPROTO
];
170 static DEFINE_SPINLOCK(xfrm_state_gc_lock
);
172 int __xfrm_state_delete(struct xfrm_state
*x
);
174 int km_query(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*pol
);
175 bool km_is_alive(const struct km_event
*c
);
176 void km_state_expired(struct xfrm_state
*x
, int hard
, u32 portid
);
178 static DEFINE_SPINLOCK(xfrm_type_lock
);
179 int xfrm_register_type(const struct xfrm_type
*type
, unsigned short family
)
181 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
182 const struct xfrm_type
**typemap
;
185 if (unlikely(afinfo
== NULL
))
186 return -EAFNOSUPPORT
;
187 typemap
= afinfo
->type_map
;
188 spin_lock_bh(&xfrm_type_lock
);
190 if (likely(typemap
[type
->proto
] == NULL
))
191 typemap
[type
->proto
] = type
;
194 spin_unlock_bh(&xfrm_type_lock
);
198 EXPORT_SYMBOL(xfrm_register_type
);
200 int xfrm_unregister_type(const struct xfrm_type
*type
, unsigned short family
)
202 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
203 const struct xfrm_type
**typemap
;
206 if (unlikely(afinfo
== NULL
))
207 return -EAFNOSUPPORT
;
208 typemap
= afinfo
->type_map
;
209 spin_lock_bh(&xfrm_type_lock
);
211 if (unlikely(typemap
[type
->proto
] != type
))
214 typemap
[type
->proto
] = NULL
;
215 spin_unlock_bh(&xfrm_type_lock
);
219 EXPORT_SYMBOL(xfrm_unregister_type
);
221 static const struct xfrm_type
*xfrm_get_type(u8 proto
, unsigned short family
)
223 struct xfrm_state_afinfo
*afinfo
;
224 const struct xfrm_type
**typemap
;
225 const struct xfrm_type
*type
;
226 int modload_attempted
= 0;
229 afinfo
= xfrm_state_get_afinfo(family
);
230 if (unlikely(afinfo
== NULL
))
232 typemap
= afinfo
->type_map
;
234 type
= READ_ONCE(typemap
[proto
]);
235 if (unlikely(type
&& !try_module_get(type
->owner
)))
240 if (!type
&& !modload_attempted
) {
241 request_module("xfrm-type-%d-%d", family
, proto
);
242 modload_attempted
= 1;
249 static void xfrm_put_type(const struct xfrm_type
*type
)
251 module_put(type
->owner
);
254 static DEFINE_SPINLOCK(xfrm_mode_lock
);
255 int xfrm_register_mode(struct xfrm_mode
*mode
, int family
)
257 struct xfrm_state_afinfo
*afinfo
;
258 struct xfrm_mode
**modemap
;
261 if (unlikely(mode
->encap
>= XFRM_MODE_MAX
))
264 afinfo
= xfrm_state_get_afinfo(family
);
265 if (unlikely(afinfo
== NULL
))
266 return -EAFNOSUPPORT
;
269 modemap
= afinfo
->mode_map
;
270 spin_lock_bh(&xfrm_mode_lock
);
271 if (modemap
[mode
->encap
])
275 if (!try_module_get(afinfo
->owner
))
278 mode
->afinfo
= afinfo
;
279 modemap
[mode
->encap
] = mode
;
283 spin_unlock_bh(&xfrm_mode_lock
);
287 EXPORT_SYMBOL(xfrm_register_mode
);
289 int xfrm_unregister_mode(struct xfrm_mode
*mode
, int family
)
291 struct xfrm_state_afinfo
*afinfo
;
292 struct xfrm_mode
**modemap
;
295 if (unlikely(mode
->encap
>= XFRM_MODE_MAX
))
298 afinfo
= xfrm_state_get_afinfo(family
);
299 if (unlikely(afinfo
== NULL
))
300 return -EAFNOSUPPORT
;
303 modemap
= afinfo
->mode_map
;
304 spin_lock_bh(&xfrm_mode_lock
);
305 if (likely(modemap
[mode
->encap
] == mode
)) {
306 modemap
[mode
->encap
] = NULL
;
307 module_put(mode
->afinfo
->owner
);
311 spin_unlock_bh(&xfrm_mode_lock
);
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
= READ_ONCE(afinfo
->mode_map
[encap
]);
332 if (unlikely(mode
&& !try_module_get(mode
->owner
)))
336 if (!mode
&& !modload_attempted
) {
337 request_module("xfrm-mode-%d-%d", family
, encap
);
338 modload_attempted
= 1;
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
);
360 kfree(x
->replay_esn
);
361 kfree(x
->preplay_esn
);
363 xfrm_put_mode(x
->inner_mode
);
364 if (x
->inner_mode_iaf
)
365 xfrm_put_mode(x
->inner_mode_iaf
);
367 xfrm_put_mode(x
->outer_mode
);
369 x
->type
->destructor(x
);
370 xfrm_put_type(x
->type
);
372 security_xfrm_state_free(x
);
376 static void xfrm_state_gc_task(struct work_struct
*work
)
378 struct xfrm_state
*x
;
379 struct hlist_node
*tmp
;
380 struct hlist_head gc_list
;
382 spin_lock_bh(&xfrm_state_gc_lock
);
383 hlist_move_list(&xfrm_state_gc_list
, &gc_list
);
384 spin_unlock_bh(&xfrm_state_gc_lock
);
388 hlist_for_each_entry_safe(x
, tmp
, &gc_list
, gclist
)
389 xfrm_state_gc_destroy(x
);
392 static enum hrtimer_restart
xfrm_timer_handler(struct hrtimer
*me
)
394 struct tasklet_hrtimer
*thr
= container_of(me
, struct tasklet_hrtimer
, timer
);
395 struct xfrm_state
*x
= container_of(thr
, struct xfrm_state
, mtimer
);
396 unsigned long now
= get_seconds();
397 long next
= LONG_MAX
;
402 if (x
->km
.state
== XFRM_STATE_DEAD
)
404 if (x
->km
.state
== XFRM_STATE_EXPIRED
)
406 if (x
->lft
.hard_add_expires_seconds
) {
407 long tmo
= x
->lft
.hard_add_expires_seconds
+
408 x
->curlft
.add_time
- now
;
410 if (x
->xflags
& XFRM_SOFT_EXPIRE
) {
411 /* enter hard expire without soft expire first?!
412 * setting a new date could trigger this.
413 * workaround: fix x->curflt.add_time by below:
415 x
->curlft
.add_time
= now
- x
->saved_tmo
- 1;
416 tmo
= x
->lft
.hard_add_expires_seconds
- x
->saved_tmo
;
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
;
438 x
->xflags
&= ~XFRM_SOFT_EXPIRE
;
439 } else if (tmo
< next
) {
441 x
->xflags
|= XFRM_SOFT_EXPIRE
;
445 if (x
->lft
.soft_use_expires_seconds
) {
446 long tmo
= x
->lft
.soft_use_expires_seconds
+
447 (x
->curlft
.use_time
? : now
) - now
;
456 km_state_expired(x
, 0, 0);
458 if (next
!= LONG_MAX
) {
459 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(next
, 0), HRTIMER_MODE_REL
);
465 if (x
->km
.state
== XFRM_STATE_ACQ
&& x
->id
.spi
== 0)
466 x
->km
.state
= XFRM_STATE_EXPIRED
;
468 err
= __xfrm_state_delete(x
);
470 km_state_expired(x
, 1, 0);
472 xfrm_audit_state_delete(x
, err
? 0 : 1, true);
475 spin_unlock(&x
->lock
);
476 return HRTIMER_NORESTART
;
479 static void xfrm_replay_timer_handler(unsigned long data
);
481 struct xfrm_state
*xfrm_state_alloc(struct net
*net
)
483 struct xfrm_state
*x
;
485 x
= kzalloc(sizeof(struct xfrm_state
), GFP_ATOMIC
);
488 write_pnet(&x
->xs_net
, net
);
489 atomic_set(&x
->refcnt
, 1);
490 atomic_set(&x
->tunnel_users
, 0);
491 INIT_LIST_HEAD(&x
->km
.all
);
492 INIT_HLIST_NODE(&x
->bydst
);
493 INIT_HLIST_NODE(&x
->bysrc
);
494 INIT_HLIST_NODE(&x
->byspi
);
495 tasklet_hrtimer_init(&x
->mtimer
, xfrm_timer_handler
,
496 CLOCK_BOOTTIME
, HRTIMER_MODE_ABS
);
497 setup_timer(&x
->rtimer
, xfrm_replay_timer_handler
,
499 x
->curlft
.add_time
= get_seconds();
500 x
->lft
.soft_byte_limit
= XFRM_INF
;
501 x
->lft
.soft_packet_limit
= XFRM_INF
;
502 x
->lft
.hard_byte_limit
= XFRM_INF
;
503 x
->lft
.hard_packet_limit
= XFRM_INF
;
504 x
->replay_maxage
= 0;
505 x
->replay_maxdiff
= 0;
506 x
->inner_mode
= NULL
;
507 x
->inner_mode_iaf
= NULL
;
508 spin_lock_init(&x
->lock
);
512 EXPORT_SYMBOL(xfrm_state_alloc
);
514 void __xfrm_state_destroy(struct xfrm_state
*x
)
516 WARN_ON(x
->km
.state
!= XFRM_STATE_DEAD
);
518 spin_lock_bh(&xfrm_state_gc_lock
);
519 hlist_add_head(&x
->gclist
, &xfrm_state_gc_list
);
520 spin_unlock_bh(&xfrm_state_gc_lock
);
521 schedule_work(&xfrm_state_gc_work
);
523 EXPORT_SYMBOL(__xfrm_state_destroy
);
525 int __xfrm_state_delete(struct xfrm_state
*x
)
527 struct net
*net
= xs_net(x
);
530 if (x
->km
.state
!= XFRM_STATE_DEAD
) {
531 x
->km
.state
= XFRM_STATE_DEAD
;
532 spin_lock(&net
->xfrm
.xfrm_state_lock
);
533 list_del(&x
->km
.all
);
534 hlist_del_rcu(&x
->bydst
);
535 hlist_del_rcu(&x
->bysrc
);
537 hlist_del_rcu(&x
->byspi
);
538 net
->xfrm
.state_num
--;
539 spin_unlock(&net
->xfrm
.xfrm_state_lock
);
541 /* All xfrm_state objects are created by xfrm_state_alloc.
542 * The xfrm_state_alloc call gives a reference, and that
543 * is what we are dropping here.
551 EXPORT_SYMBOL(__xfrm_state_delete
);
553 int xfrm_state_delete(struct xfrm_state
*x
)
557 spin_lock_bh(&x
->lock
);
558 err
= __xfrm_state_delete(x
);
559 spin_unlock_bh(&x
->lock
);
563 EXPORT_SYMBOL(xfrm_state_delete
);
565 #ifdef CONFIG_SECURITY_NETWORK_XFRM
567 xfrm_state_flush_secctx_check(struct net
*net
, u8 proto
, bool task_valid
)
571 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
572 struct xfrm_state
*x
;
574 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+i
, bydst
) {
575 if (xfrm_id_proto_match(x
->id
.proto
, proto
) &&
576 (err
= security_xfrm_state_delete(x
)) != 0) {
577 xfrm_audit_state_delete(x
, 0, task_valid
);
587 xfrm_state_flush_secctx_check(struct net
*net
, u8 proto
, bool task_valid
)
593 int xfrm_state_flush(struct net
*net
, u8 proto
, bool task_valid
)
595 int i
, err
= 0, cnt
= 0;
597 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
598 err
= xfrm_state_flush_secctx_check(net
, proto
, task_valid
);
603 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
604 struct xfrm_state
*x
;
606 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+i
, bydst
) {
607 if (!xfrm_state_kern(x
) &&
608 xfrm_id_proto_match(x
->id
.proto
, proto
)) {
610 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
612 err
= xfrm_state_delete(x
);
613 xfrm_audit_state_delete(x
, err
? 0 : 1,
619 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
628 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
631 EXPORT_SYMBOL(xfrm_state_flush
);
633 void xfrm_sad_getinfo(struct net
*net
, struct xfrmk_sadinfo
*si
)
635 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
636 si
->sadcnt
= net
->xfrm
.state_num
;
637 si
->sadhcnt
= net
->xfrm
.state_hmask
;
638 si
->sadhmcnt
= xfrm_state_hashmax
;
639 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
641 EXPORT_SYMBOL(xfrm_sad_getinfo
);
644 xfrm_init_tempstate(struct xfrm_state
*x
, const struct flowi
*fl
,
645 const struct xfrm_tmpl
*tmpl
,
646 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
647 unsigned short family
)
649 struct xfrm_state_afinfo
*afinfo
= xfrm_state_afinfo_get_rcu(family
);
654 afinfo
->init_tempsel(&x
->sel
, fl
);
656 if (family
!= tmpl
->encap_family
) {
657 afinfo
= xfrm_state_afinfo_get_rcu(tmpl
->encap_family
);
661 afinfo
->init_temprop(x
, tmpl
, daddr
, saddr
);
664 static struct xfrm_state
*__xfrm_state_lookup(struct net
*net
, u32 mark
,
665 const xfrm_address_t
*daddr
,
666 __be32 spi
, u8 proto
,
667 unsigned short family
)
669 unsigned int h
= xfrm_spi_hash(net
, daddr
, spi
, proto
, family
);
670 struct xfrm_state
*x
;
672 hlist_for_each_entry_rcu(x
, net
->xfrm
.state_byspi
+ h
, byspi
) {
673 if (x
->props
.family
!= family
||
675 x
->id
.proto
!= proto
||
676 !xfrm_addr_equal(&x
->id
.daddr
, daddr
, family
))
679 if ((mark
& x
->mark
.m
) != x
->mark
.v
)
681 if (!xfrm_state_hold_rcu(x
))
689 static struct xfrm_state
*__xfrm_state_lookup_byaddr(struct net
*net
, u32 mark
,
690 const xfrm_address_t
*daddr
,
691 const xfrm_address_t
*saddr
,
692 u8 proto
, unsigned short family
)
694 unsigned int h
= xfrm_src_hash(net
, daddr
, saddr
, family
);
695 struct xfrm_state
*x
;
697 hlist_for_each_entry_rcu(x
, net
->xfrm
.state_bysrc
+ h
, bysrc
) {
698 if (x
->props
.family
!= family
||
699 x
->id
.proto
!= proto
||
700 !xfrm_addr_equal(&x
->id
.daddr
, daddr
, family
) ||
701 !xfrm_addr_equal(&x
->props
.saddr
, saddr
, family
))
704 if ((mark
& x
->mark
.m
) != x
->mark
.v
)
706 if (!xfrm_state_hold_rcu(x
))
714 static inline struct xfrm_state
*
715 __xfrm_state_locate(struct xfrm_state
*x
, int use_spi
, int family
)
717 struct net
*net
= xs_net(x
);
718 u32 mark
= x
->mark
.v
& x
->mark
.m
;
721 return __xfrm_state_lookup(net
, mark
, &x
->id
.daddr
,
722 x
->id
.spi
, x
->id
.proto
, family
);
724 return __xfrm_state_lookup_byaddr(net
, mark
,
727 x
->id
.proto
, family
);
730 static void xfrm_hash_grow_check(struct net
*net
, int have_hash_collision
)
732 if (have_hash_collision
&&
733 (net
->xfrm
.state_hmask
+ 1) < xfrm_state_hashmax
&&
734 net
->xfrm
.state_num
> net
->xfrm
.state_hmask
)
735 schedule_work(&net
->xfrm
.state_hash_work
);
738 static void xfrm_state_look_at(struct xfrm_policy
*pol
, struct xfrm_state
*x
,
739 const struct flowi
*fl
, unsigned short family
,
740 struct xfrm_state
**best
, int *acq_in_progress
,
744 * 1. There is a valid state with matching selector. Done.
745 * 2. Valid state with inappropriate selector. Skip.
747 * Entering area of "sysdeps".
749 * 3. If state is not valid, selector is temporary, it selects
750 * only session which triggered previous resolution. Key
751 * manager will do something to install a state with proper
754 if (x
->km
.state
== XFRM_STATE_VALID
) {
755 if ((x
->sel
.family
&&
756 !xfrm_selector_match(&x
->sel
, fl
, x
->sel
.family
)) ||
757 !security_xfrm_state_pol_flow_match(x
, pol
, fl
))
761 (*best
)->km
.dying
> x
->km
.dying
||
762 ((*best
)->km
.dying
== x
->km
.dying
&&
763 (*best
)->curlft
.add_time
< x
->curlft
.add_time
))
765 } else if (x
->km
.state
== XFRM_STATE_ACQ
) {
766 *acq_in_progress
= 1;
767 } else if (x
->km
.state
== XFRM_STATE_ERROR
||
768 x
->km
.state
== XFRM_STATE_EXPIRED
) {
769 if (xfrm_selector_match(&x
->sel
, fl
, x
->sel
.family
) &&
770 security_xfrm_state_pol_flow_match(x
, pol
, fl
))
776 xfrm_state_find(const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
777 const struct flowi
*fl
, struct xfrm_tmpl
*tmpl
,
778 struct xfrm_policy
*pol
, int *err
,
779 unsigned short family
)
781 static xfrm_address_t saddr_wildcard
= { };
782 struct net
*net
= xp_net(pol
);
783 unsigned int h
, h_wildcard
;
784 struct xfrm_state
*x
, *x0
, *to_put
;
785 int acquire_in_progress
= 0;
787 struct xfrm_state
*best
= NULL
;
788 u32 mark
= pol
->mark
.v
& pol
->mark
.m
;
789 unsigned short encap_family
= tmpl
->encap_family
;
790 unsigned int sequence
;
795 sequence
= read_seqcount_begin(&xfrm_state_hash_generation
);
798 h
= xfrm_dst_hash(net
, daddr
, saddr
, tmpl
->reqid
, encap_family
);
799 hlist_for_each_entry_rcu(x
, net
->xfrm
.state_bydst
+ h
, bydst
) {
800 if (x
->props
.family
== encap_family
&&
801 x
->props
.reqid
== tmpl
->reqid
&&
802 (mark
& x
->mark
.m
) == x
->mark
.v
&&
803 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
804 xfrm_state_addr_check(x
, daddr
, saddr
, encap_family
) &&
805 tmpl
->mode
== x
->props
.mode
&&
806 tmpl
->id
.proto
== x
->id
.proto
&&
807 (tmpl
->id
.spi
== x
->id
.spi
|| !tmpl
->id
.spi
))
808 xfrm_state_look_at(pol
, x
, fl
, encap_family
,
809 &best
, &acquire_in_progress
, &error
);
811 if (best
|| acquire_in_progress
)
814 h_wildcard
= xfrm_dst_hash(net
, daddr
, &saddr_wildcard
, tmpl
->reqid
, encap_family
);
815 hlist_for_each_entry_rcu(x
, net
->xfrm
.state_bydst
+ h_wildcard
, bydst
) {
816 if (x
->props
.family
== encap_family
&&
817 x
->props
.reqid
== tmpl
->reqid
&&
818 (mark
& x
->mark
.m
) == x
->mark
.v
&&
819 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
820 xfrm_addr_equal(&x
->id
.daddr
, daddr
, encap_family
) &&
821 tmpl
->mode
== x
->props
.mode
&&
822 tmpl
->id
.proto
== x
->id
.proto
&&
823 (tmpl
->id
.spi
== x
->id
.spi
|| !tmpl
->id
.spi
))
824 xfrm_state_look_at(pol
, x
, fl
, encap_family
,
825 &best
, &acquire_in_progress
, &error
);
830 if (!x
&& !error
&& !acquire_in_progress
) {
832 (x0
= __xfrm_state_lookup(net
, mark
, daddr
, tmpl
->id
.spi
,
833 tmpl
->id
.proto
, encap_family
)) != NULL
) {
840 /* If the KMs have no listeners (yet...), avoid allocating an SA
841 * for each and every packet - garbage collection might not
844 if (!km_is_alive(&c
)) {
849 x
= xfrm_state_alloc(net
);
854 /* Initialize temporary state matching only
855 * to current session. */
856 xfrm_init_tempstate(x
, fl
, tmpl
, daddr
, saddr
, family
);
857 memcpy(&x
->mark
, &pol
->mark
, sizeof(x
->mark
));
859 error
= security_xfrm_state_alloc_acquire(x
, pol
->security
, fl
->flowi_secid
);
861 x
->km
.state
= XFRM_STATE_DEAD
;
867 if (km_query(x
, tmpl
, pol
) == 0) {
868 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
869 x
->km
.state
= XFRM_STATE_ACQ
;
870 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
871 hlist_add_head_rcu(&x
->bydst
, net
->xfrm
.state_bydst
+ h
);
872 h
= xfrm_src_hash(net
, daddr
, saddr
, encap_family
);
873 hlist_add_head_rcu(&x
->bysrc
, net
->xfrm
.state_bysrc
+ h
);
875 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
, encap_family
);
876 hlist_add_head_rcu(&x
->byspi
, net
->xfrm
.state_byspi
+ h
);
878 x
->lft
.hard_add_expires_seconds
= net
->xfrm
.sysctl_acq_expires
;
879 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(net
->xfrm
.sysctl_acq_expires
, 0), HRTIMER_MODE_REL
);
880 net
->xfrm
.state_num
++;
881 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
882 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
884 x
->km
.state
= XFRM_STATE_DEAD
;
892 if (!xfrm_state_hold_rcu(x
)) {
897 *err
= acquire_in_progress
? -EAGAIN
: error
;
901 xfrm_state_put(to_put
);
903 if (read_seqcount_retry(&xfrm_state_hash_generation
, sequence
)) {
915 xfrm_stateonly_find(struct net
*net
, u32 mark
,
916 xfrm_address_t
*daddr
, xfrm_address_t
*saddr
,
917 unsigned short family
, u8 mode
, u8 proto
, u32 reqid
)
920 struct xfrm_state
*rx
= NULL
, *x
= NULL
;
922 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
923 h
= xfrm_dst_hash(net
, daddr
, saddr
, reqid
, family
);
924 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+h
, bydst
) {
925 if (x
->props
.family
== family
&&
926 x
->props
.reqid
== reqid
&&
927 (mark
& x
->mark
.m
) == x
->mark
.v
&&
928 !(x
->props
.flags
& XFRM_STATE_WILDRECV
) &&
929 xfrm_state_addr_check(x
, daddr
, saddr
, family
) &&
930 mode
== x
->props
.mode
&&
931 proto
== x
->id
.proto
&&
932 x
->km
.state
== XFRM_STATE_VALID
) {
940 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
945 EXPORT_SYMBOL(xfrm_stateonly_find
);
947 struct xfrm_state
*xfrm_state_lookup_byspi(struct net
*net
, __be32 spi
,
948 unsigned short family
)
950 struct xfrm_state
*x
;
951 struct xfrm_state_walk
*w
;
953 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
954 list_for_each_entry(w
, &net
->xfrm
.state_all
, all
) {
955 x
= container_of(w
, struct xfrm_state
, km
);
956 if (x
->props
.family
!= family
||
961 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
964 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
967 EXPORT_SYMBOL(xfrm_state_lookup_byspi
);
969 static void __xfrm_state_insert(struct xfrm_state
*x
)
971 struct net
*net
= xs_net(x
);
974 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
976 h
= xfrm_dst_hash(net
, &x
->id
.daddr
, &x
->props
.saddr
,
977 x
->props
.reqid
, x
->props
.family
);
978 hlist_add_head_rcu(&x
->bydst
, net
->xfrm
.state_bydst
+ h
);
980 h
= xfrm_src_hash(net
, &x
->id
.daddr
, &x
->props
.saddr
, x
->props
.family
);
981 hlist_add_head_rcu(&x
->bysrc
, net
->xfrm
.state_bysrc
+ h
);
984 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
,
987 hlist_add_head_rcu(&x
->byspi
, net
->xfrm
.state_byspi
+ h
);
990 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(1, 0), HRTIMER_MODE_REL
);
991 if (x
->replay_maxage
)
992 mod_timer(&x
->rtimer
, jiffies
+ x
->replay_maxage
);
994 net
->xfrm
.state_num
++;
996 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
999 /* net->xfrm.xfrm_state_lock is held */
1000 static void __xfrm_state_bump_genids(struct xfrm_state
*xnew
)
1002 struct net
*net
= xs_net(xnew
);
1003 unsigned short family
= xnew
->props
.family
;
1004 u32 reqid
= xnew
->props
.reqid
;
1005 struct xfrm_state
*x
;
1007 u32 mark
= xnew
->mark
.v
& xnew
->mark
.m
;
1009 h
= xfrm_dst_hash(net
, &xnew
->id
.daddr
, &xnew
->props
.saddr
, reqid
, family
);
1010 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+h
, bydst
) {
1011 if (x
->props
.family
== family
&&
1012 x
->props
.reqid
== reqid
&&
1013 (mark
& x
->mark
.m
) == x
->mark
.v
&&
1014 xfrm_addr_equal(&x
->id
.daddr
, &xnew
->id
.daddr
, family
) &&
1015 xfrm_addr_equal(&x
->props
.saddr
, &xnew
->props
.saddr
, family
))
1020 void xfrm_state_insert(struct xfrm_state
*x
)
1022 struct net
*net
= xs_net(x
);
1024 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1025 __xfrm_state_bump_genids(x
);
1026 __xfrm_state_insert(x
);
1027 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1029 EXPORT_SYMBOL(xfrm_state_insert
);
1031 /* net->xfrm.xfrm_state_lock is held */
1032 static struct xfrm_state
*__find_acq_core(struct net
*net
,
1033 const struct xfrm_mark
*m
,
1034 unsigned short family
, u8 mode
,
1035 u32 reqid
, u8 proto
,
1036 const xfrm_address_t
*daddr
,
1037 const xfrm_address_t
*saddr
,
1040 unsigned int h
= xfrm_dst_hash(net
, daddr
, saddr
, reqid
, family
);
1041 struct xfrm_state
*x
;
1042 u32 mark
= m
->v
& m
->m
;
1044 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+h
, bydst
) {
1045 if (x
->props
.reqid
!= reqid
||
1046 x
->props
.mode
!= mode
||
1047 x
->props
.family
!= family
||
1048 x
->km
.state
!= XFRM_STATE_ACQ
||
1050 x
->id
.proto
!= proto
||
1051 (mark
& x
->mark
.m
) != x
->mark
.v
||
1052 !xfrm_addr_equal(&x
->id
.daddr
, daddr
, family
) ||
1053 !xfrm_addr_equal(&x
->props
.saddr
, saddr
, family
))
1063 x
= xfrm_state_alloc(net
);
1067 x
->sel
.daddr
.a4
= daddr
->a4
;
1068 x
->sel
.saddr
.a4
= saddr
->a4
;
1069 x
->sel
.prefixlen_d
= 32;
1070 x
->sel
.prefixlen_s
= 32;
1071 x
->props
.saddr
.a4
= saddr
->a4
;
1072 x
->id
.daddr
.a4
= daddr
->a4
;
1076 x
->sel
.daddr
.in6
= daddr
->in6
;
1077 x
->sel
.saddr
.in6
= saddr
->in6
;
1078 x
->sel
.prefixlen_d
= 128;
1079 x
->sel
.prefixlen_s
= 128;
1080 x
->props
.saddr
.in6
= saddr
->in6
;
1081 x
->id
.daddr
.in6
= daddr
->in6
;
1085 x
->km
.state
= XFRM_STATE_ACQ
;
1086 x
->id
.proto
= proto
;
1087 x
->props
.family
= family
;
1088 x
->props
.mode
= mode
;
1089 x
->props
.reqid
= reqid
;
1092 x
->lft
.hard_add_expires_seconds
= net
->xfrm
.sysctl_acq_expires
;
1094 tasklet_hrtimer_start(&x
->mtimer
, ktime_set(net
->xfrm
.sysctl_acq_expires
, 0), HRTIMER_MODE_REL
);
1095 list_add(&x
->km
.all
, &net
->xfrm
.state_all
);
1096 hlist_add_head_rcu(&x
->bydst
, net
->xfrm
.state_bydst
+ h
);
1097 h
= xfrm_src_hash(net
, daddr
, saddr
, family
);
1098 hlist_add_head_rcu(&x
->bysrc
, net
->xfrm
.state_bysrc
+ h
);
1100 net
->xfrm
.state_num
++;
1102 xfrm_hash_grow_check(net
, x
->bydst
.next
!= NULL
);
1108 static struct xfrm_state
*__xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
);
1110 int xfrm_state_add(struct xfrm_state
*x
)
1112 struct net
*net
= xs_net(x
);
1113 struct xfrm_state
*x1
, *to_put
;
1116 u32 mark
= x
->mark
.v
& x
->mark
.m
;
1117 int use_spi
= xfrm_id_proto_match(x
->id
.proto
, IPSEC_PROTO_ANY
);
1119 family
= x
->props
.family
;
1123 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1125 x1
= __xfrm_state_locate(x
, use_spi
, family
);
1133 if (use_spi
&& x
->km
.seq
) {
1134 x1
= __xfrm_find_acq_byseq(net
, mark
, x
->km
.seq
);
1135 if (x1
&& ((x1
->id
.proto
!= x
->id
.proto
) ||
1136 !xfrm_addr_equal(&x1
->id
.daddr
, &x
->id
.daddr
, family
))) {
1143 x1
= __find_acq_core(net
, &x
->mark
, family
, x
->props
.mode
,
1144 x
->props
.reqid
, x
->id
.proto
,
1145 &x
->id
.daddr
, &x
->props
.saddr
, 0);
1147 __xfrm_state_bump_genids(x
);
1148 __xfrm_state_insert(x
);
1152 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1155 xfrm_state_delete(x1
);
1160 xfrm_state_put(to_put
);
1164 EXPORT_SYMBOL(xfrm_state_add
);
1166 #ifdef CONFIG_XFRM_MIGRATE
1167 static struct xfrm_state
*xfrm_state_clone(struct xfrm_state
*orig
)
1169 struct net
*net
= xs_net(orig
);
1170 struct xfrm_state
*x
= xfrm_state_alloc(net
);
1174 memcpy(&x
->id
, &orig
->id
, sizeof(x
->id
));
1175 memcpy(&x
->sel
, &orig
->sel
, sizeof(x
->sel
));
1176 memcpy(&x
->lft
, &orig
->lft
, sizeof(x
->lft
));
1177 x
->props
.mode
= orig
->props
.mode
;
1178 x
->props
.replay_window
= orig
->props
.replay_window
;
1179 x
->props
.reqid
= orig
->props
.reqid
;
1180 x
->props
.family
= orig
->props
.family
;
1181 x
->props
.saddr
= orig
->props
.saddr
;
1184 x
->aalg
= xfrm_algo_auth_clone(orig
->aalg
);
1188 x
->props
.aalgo
= orig
->props
.aalgo
;
1191 x
->aead
= xfrm_algo_aead_clone(orig
->aead
);
1196 x
->ealg
= xfrm_algo_clone(orig
->ealg
);
1200 x
->props
.ealgo
= orig
->props
.ealgo
;
1203 x
->calg
= xfrm_algo_clone(orig
->calg
);
1207 x
->props
.calgo
= orig
->props
.calgo
;
1210 x
->encap
= kmemdup(orig
->encap
, sizeof(*x
->encap
), GFP_KERNEL
);
1216 x
->coaddr
= kmemdup(orig
->coaddr
, sizeof(*x
->coaddr
),
1222 if (orig
->replay_esn
) {
1223 if (xfrm_replay_clone(x
, orig
))
1227 memcpy(&x
->mark
, &orig
->mark
, sizeof(x
->mark
));
1229 if (xfrm_init_state(x
) < 0)
1232 x
->props
.flags
= orig
->props
.flags
;
1233 x
->props
.extra_flags
= orig
->props
.extra_flags
;
1235 x
->tfcpad
= orig
->tfcpad
;
1236 x
->replay_maxdiff
= orig
->replay_maxdiff
;
1237 x
->replay_maxage
= orig
->replay_maxage
;
1238 x
->curlft
.add_time
= orig
->curlft
.add_time
;
1239 x
->km
.state
= orig
->km
.state
;
1240 x
->km
.seq
= orig
->km
.seq
;
1250 struct xfrm_state
*xfrm_migrate_state_find(struct xfrm_migrate
*m
, struct net
*net
)
1253 struct xfrm_state
*x
= NULL
;
1255 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1258 h
= xfrm_dst_hash(net
, &m
->old_daddr
, &m
->old_saddr
,
1259 m
->reqid
, m
->old_family
);
1260 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+h
, bydst
) {
1261 if (x
->props
.mode
!= m
->mode
||
1262 x
->id
.proto
!= m
->proto
)
1264 if (m
->reqid
&& x
->props
.reqid
!= m
->reqid
)
1266 if (!xfrm_addr_equal(&x
->id
.daddr
, &m
->old_daddr
,
1268 !xfrm_addr_equal(&x
->props
.saddr
, &m
->old_saddr
,
1275 h
= xfrm_src_hash(net
, &m
->old_daddr
, &m
->old_saddr
,
1277 hlist_for_each_entry(x
, net
->xfrm
.state_bysrc
+h
, bysrc
) {
1278 if (x
->props
.mode
!= m
->mode
||
1279 x
->id
.proto
!= m
->proto
)
1281 if (!xfrm_addr_equal(&x
->id
.daddr
, &m
->old_daddr
,
1283 !xfrm_addr_equal(&x
->props
.saddr
, &m
->old_saddr
,
1291 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1295 EXPORT_SYMBOL(xfrm_migrate_state_find
);
1297 struct xfrm_state
*xfrm_state_migrate(struct xfrm_state
*x
,
1298 struct xfrm_migrate
*m
)
1300 struct xfrm_state
*xc
;
1302 xc
= xfrm_state_clone(x
);
1306 memcpy(&xc
->id
.daddr
, &m
->new_daddr
, sizeof(xc
->id
.daddr
));
1307 memcpy(&xc
->props
.saddr
, &m
->new_saddr
, sizeof(xc
->props
.saddr
));
1310 if (xfrm_addr_equal(&x
->id
.daddr
, &m
->new_daddr
, m
->new_family
)) {
1311 /* a care is needed when the destination address of the
1312 state is to be updated as it is a part of triplet */
1313 xfrm_state_insert(xc
);
1315 if (xfrm_state_add(xc
) < 0)
1324 EXPORT_SYMBOL(xfrm_state_migrate
);
1327 int xfrm_state_update(struct xfrm_state
*x
)
1329 struct xfrm_state
*x1
, *to_put
;
1331 int use_spi
= xfrm_id_proto_match(x
->id
.proto
, IPSEC_PROTO_ANY
);
1332 struct net
*net
= xs_net(x
);
1336 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1337 x1
= __xfrm_state_locate(x
, use_spi
, x
->props
.family
);
1343 if (xfrm_state_kern(x1
)) {
1349 if (x1
->km
.state
== XFRM_STATE_ACQ
) {
1350 __xfrm_state_insert(x
);
1356 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1359 xfrm_state_put(to_put
);
1365 xfrm_state_delete(x1
);
1371 spin_lock_bh(&x1
->lock
);
1372 if (likely(x1
->km
.state
== XFRM_STATE_VALID
)) {
1373 if (x
->encap
&& x1
->encap
)
1374 memcpy(x1
->encap
, x
->encap
, sizeof(*x1
->encap
));
1375 if (x
->coaddr
&& x1
->coaddr
) {
1376 memcpy(x1
->coaddr
, x
->coaddr
, sizeof(*x1
->coaddr
));
1378 if (!use_spi
&& memcmp(&x1
->sel
, &x
->sel
, sizeof(x1
->sel
)))
1379 memcpy(&x1
->sel
, &x
->sel
, sizeof(x1
->sel
));
1380 memcpy(&x1
->lft
, &x
->lft
, sizeof(x1
->lft
));
1383 tasklet_hrtimer_start(&x1
->mtimer
, ktime_set(1, 0), HRTIMER_MODE_REL
);
1384 if (x1
->curlft
.use_time
)
1385 xfrm_state_check_expire(x1
);
1388 x
->km
.state
= XFRM_STATE_DEAD
;
1389 __xfrm_state_put(x
);
1391 spin_unlock_bh(&x1
->lock
);
1397 EXPORT_SYMBOL(xfrm_state_update
);
1399 int xfrm_state_check_expire(struct xfrm_state
*x
)
1401 if (!x
->curlft
.use_time
)
1402 x
->curlft
.use_time
= get_seconds();
1404 if (x
->curlft
.bytes
>= x
->lft
.hard_byte_limit
||
1405 x
->curlft
.packets
>= x
->lft
.hard_packet_limit
) {
1406 x
->km
.state
= XFRM_STATE_EXPIRED
;
1407 tasklet_hrtimer_start(&x
->mtimer
, 0, HRTIMER_MODE_REL
);
1412 (x
->curlft
.bytes
>= x
->lft
.soft_byte_limit
||
1413 x
->curlft
.packets
>= x
->lft
.soft_packet_limit
)) {
1415 km_state_expired(x
, 0, 0);
1419 EXPORT_SYMBOL(xfrm_state_check_expire
);
1422 xfrm_state_lookup(struct net
*net
, u32 mark
, const xfrm_address_t
*daddr
, __be32 spi
,
1423 u8 proto
, unsigned short family
)
1425 struct xfrm_state
*x
;
1428 x
= __xfrm_state_lookup(net
, mark
, daddr
, spi
, proto
, family
);
1432 EXPORT_SYMBOL(xfrm_state_lookup
);
1435 xfrm_state_lookup_byaddr(struct net
*net
, u32 mark
,
1436 const xfrm_address_t
*daddr
, const xfrm_address_t
*saddr
,
1437 u8 proto
, unsigned short family
)
1439 struct xfrm_state
*x
;
1441 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1442 x
= __xfrm_state_lookup_byaddr(net
, mark
, daddr
, saddr
, proto
, family
);
1443 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1446 EXPORT_SYMBOL(xfrm_state_lookup_byaddr
);
1449 xfrm_find_acq(struct net
*net
, const struct xfrm_mark
*mark
, u8 mode
, u32 reqid
,
1450 u8 proto
, const xfrm_address_t
*daddr
,
1451 const xfrm_address_t
*saddr
, int create
, unsigned short family
)
1453 struct xfrm_state
*x
;
1455 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1456 x
= __find_acq_core(net
, mark
, family
, mode
, reqid
, proto
, daddr
, saddr
, create
);
1457 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1461 EXPORT_SYMBOL(xfrm_find_acq
);
1463 #ifdef CONFIG_XFRM_SUB_POLICY
1465 xfrm_tmpl_sort(struct xfrm_tmpl
**dst
, struct xfrm_tmpl
**src
, int n
,
1466 unsigned short family
, struct net
*net
)
1469 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
1471 return -EAFNOSUPPORT
;
1473 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
); /*FIXME*/
1474 if (afinfo
->tmpl_sort
)
1475 err
= afinfo
->tmpl_sort(dst
, src
, n
);
1476 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1480 EXPORT_SYMBOL(xfrm_tmpl_sort
);
1483 xfrm_state_sort(struct xfrm_state
**dst
, struct xfrm_state
**src
, int n
,
1484 unsigned short family
)
1487 struct xfrm_state_afinfo
*afinfo
= xfrm_state_get_afinfo(family
);
1488 struct net
*net
= xs_net(*src
);
1491 return -EAFNOSUPPORT
;
1493 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1494 if (afinfo
->state_sort
)
1495 err
= afinfo
->state_sort(dst
, src
, n
);
1496 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1500 EXPORT_SYMBOL(xfrm_state_sort
);
1503 /* Silly enough, but I'm lazy to build resolution list */
1505 static struct xfrm_state
*__xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
)
1509 for (i
= 0; i
<= net
->xfrm
.state_hmask
; i
++) {
1510 struct xfrm_state
*x
;
1512 hlist_for_each_entry(x
, net
->xfrm
.state_bydst
+i
, bydst
) {
1513 if (x
->km
.seq
== seq
&&
1514 (mark
& x
->mark
.m
) == x
->mark
.v
&&
1515 x
->km
.state
== XFRM_STATE_ACQ
) {
1524 struct xfrm_state
*xfrm_find_acq_byseq(struct net
*net
, u32 mark
, u32 seq
)
1526 struct xfrm_state
*x
;
1528 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1529 x
= __xfrm_find_acq_byseq(net
, mark
, seq
);
1530 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1533 EXPORT_SYMBOL(xfrm_find_acq_byseq
);
1535 u32
xfrm_get_acqseq(void)
1538 static atomic_t acqseq
;
1541 res
= atomic_inc_return(&acqseq
);
1546 EXPORT_SYMBOL(xfrm_get_acqseq
);
1548 int verify_spi_info(u8 proto
, u32 min
, u32 max
)
1556 /* IPCOMP spi is 16-bits. */
1570 EXPORT_SYMBOL(verify_spi_info
);
1572 int xfrm_alloc_spi(struct xfrm_state
*x
, u32 low
, u32 high
)
1574 struct net
*net
= xs_net(x
);
1576 struct xfrm_state
*x0
;
1578 __be32 minspi
= htonl(low
);
1579 __be32 maxspi
= htonl(high
);
1580 u32 mark
= x
->mark
.v
& x
->mark
.m
;
1582 spin_lock_bh(&x
->lock
);
1583 if (x
->km
.state
== XFRM_STATE_DEAD
)
1592 if (minspi
== maxspi
) {
1593 x0
= xfrm_state_lookup(net
, mark
, &x
->id
.daddr
, minspi
, x
->id
.proto
, x
->props
.family
);
1601 for (h
= 0; h
< high
-low
+1; h
++) {
1602 spi
= low
+ prandom_u32()%(high
-low
+1);
1603 x0
= xfrm_state_lookup(net
, mark
, &x
->id
.daddr
, htonl(spi
), x
->id
.proto
, x
->props
.family
);
1605 x
->id
.spi
= htonl(spi
);
1612 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1613 h
= xfrm_spi_hash(net
, &x
->id
.daddr
, x
->id
.spi
, x
->id
.proto
, x
->props
.family
);
1614 hlist_add_head_rcu(&x
->byspi
, net
->xfrm
.state_byspi
+ h
);
1615 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1621 spin_unlock_bh(&x
->lock
);
1625 EXPORT_SYMBOL(xfrm_alloc_spi
);
1627 static bool __xfrm_state_filter_match(struct xfrm_state
*x
,
1628 struct xfrm_address_filter
*filter
)
1631 if ((filter
->family
== AF_INET
||
1632 filter
->family
== AF_INET6
) &&
1633 x
->props
.family
!= filter
->family
)
1636 return addr_match(&x
->props
.saddr
, &filter
->saddr
,
1638 addr_match(&x
->id
.daddr
, &filter
->daddr
,
1644 int xfrm_state_walk(struct net
*net
, struct xfrm_state_walk
*walk
,
1645 int (*func
)(struct xfrm_state
*, int, void*),
1648 struct xfrm_state
*state
;
1649 struct xfrm_state_walk
*x
;
1652 if (walk
->seq
!= 0 && list_empty(&walk
->all
))
1655 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1656 if (list_empty(&walk
->all
))
1657 x
= list_first_entry(&net
->xfrm
.state_all
, struct xfrm_state_walk
, all
);
1659 x
= list_first_entry(&walk
->all
, struct xfrm_state_walk
, all
);
1660 list_for_each_entry_from(x
, &net
->xfrm
.state_all
, all
) {
1661 if (x
->state
== XFRM_STATE_DEAD
)
1663 state
= container_of(x
, struct xfrm_state
, km
);
1664 if (!xfrm_id_proto_match(state
->id
.proto
, walk
->proto
))
1666 if (!__xfrm_state_filter_match(state
, walk
->filter
))
1668 err
= func(state
, walk
->seq
, data
);
1670 list_move_tail(&walk
->all
, &x
->all
);
1675 if (walk
->seq
== 0) {
1679 list_del_init(&walk
->all
);
1681 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1684 EXPORT_SYMBOL(xfrm_state_walk
);
1686 void xfrm_state_walk_init(struct xfrm_state_walk
*walk
, u8 proto
,
1687 struct xfrm_address_filter
*filter
)
1689 INIT_LIST_HEAD(&walk
->all
);
1690 walk
->proto
= proto
;
1691 walk
->state
= XFRM_STATE_DEAD
;
1693 walk
->filter
= filter
;
1695 EXPORT_SYMBOL(xfrm_state_walk_init
);
1697 void xfrm_state_walk_done(struct xfrm_state_walk
*walk
, struct net
*net
)
1699 kfree(walk
->filter
);
1701 if (list_empty(&walk
->all
))
1704 spin_lock_bh(&net
->xfrm
.xfrm_state_lock
);
1705 list_del(&walk
->all
);
1706 spin_unlock_bh(&net
->xfrm
.xfrm_state_lock
);
1708 EXPORT_SYMBOL(xfrm_state_walk_done
);
1710 static void xfrm_replay_timer_handler(unsigned long data
)
1712 struct xfrm_state
*x
= (struct xfrm_state
*)data
;
1714 spin_lock(&x
->lock
);
1716 if (x
->km
.state
== XFRM_STATE_VALID
) {
1717 if (xfrm_aevent_is_on(xs_net(x
)))
1718 x
->repl
->notify(x
, XFRM_REPLAY_TIMEOUT
);
1720 x
->xflags
|= XFRM_TIME_DEFER
;
1723 spin_unlock(&x
->lock
);
1726 static LIST_HEAD(xfrm_km_list
);
1728 void km_policy_notify(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
1730 struct xfrm_mgr
*km
;
1733 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
)
1734 if (km
->notify_policy
)
1735 km
->notify_policy(xp
, dir
, c
);
1739 void km_state_notify(struct xfrm_state
*x
, const struct km_event
*c
)
1741 struct xfrm_mgr
*km
;
1743 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
)
1749 EXPORT_SYMBOL(km_policy_notify
);
1750 EXPORT_SYMBOL(km_state_notify
);
1752 void km_state_expired(struct xfrm_state
*x
, int hard
, u32 portid
)
1758 c
.event
= XFRM_MSG_EXPIRE
;
1759 km_state_notify(x
, &c
);
1762 EXPORT_SYMBOL(km_state_expired
);
1764 * We send to all registered managers regardless of failure
1765 * We are happy with one success
1767 int km_query(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*pol
)
1769 int err
= -EINVAL
, acqret
;
1770 struct xfrm_mgr
*km
;
1773 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1774 acqret
= km
->acquire(x
, t
, pol
);
1781 EXPORT_SYMBOL(km_query
);
1783 int km_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
1786 struct xfrm_mgr
*km
;
1789 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1790 if (km
->new_mapping
)
1791 err
= km
->new_mapping(x
, ipaddr
, sport
);
1798 EXPORT_SYMBOL(km_new_mapping
);
1800 void km_policy_expired(struct xfrm_policy
*pol
, int dir
, int hard
, u32 portid
)
1806 c
.event
= XFRM_MSG_POLEXPIRE
;
1807 km_policy_notify(pol
, dir
, &c
);
1809 EXPORT_SYMBOL(km_policy_expired
);
1811 #ifdef CONFIG_XFRM_MIGRATE
1812 int km_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
1813 const struct xfrm_migrate
*m
, int num_migrate
,
1814 const struct xfrm_kmaddress
*k
)
1818 struct xfrm_mgr
*km
;
1821 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1823 ret
= km
->migrate(sel
, dir
, type
, m
, num_migrate
, k
);
1831 EXPORT_SYMBOL(km_migrate
);
1834 int km_report(struct net
*net
, u8 proto
, struct xfrm_selector
*sel
, xfrm_address_t
*addr
)
1838 struct xfrm_mgr
*km
;
1841 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1843 ret
= km
->report(net
, proto
, sel
, addr
);
1851 EXPORT_SYMBOL(km_report
);
1853 bool km_is_alive(const struct km_event
*c
)
1855 struct xfrm_mgr
*km
;
1856 bool is_alive
= false;
1859 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1860 if (km
->is_alive
&& km
->is_alive(c
)) {
1869 EXPORT_SYMBOL(km_is_alive
);
1871 int xfrm_user_policy(struct sock
*sk
, int optname
, u8 __user
*optval
, int optlen
)
1875 struct xfrm_mgr
*km
;
1876 struct xfrm_policy
*pol
= NULL
;
1878 if (optlen
<= 0 || optlen
> PAGE_SIZE
)
1881 data
= kmalloc(optlen
, GFP_KERNEL
);
1886 if (copy_from_user(data
, optval
, optlen
))
1891 list_for_each_entry_rcu(km
, &xfrm_km_list
, list
) {
1892 pol
= km
->compile_policy(sk
, optname
, data
,
1900 xfrm_sk_policy_insert(sk
, err
, pol
);
1909 EXPORT_SYMBOL(xfrm_user_policy
);
1911 static DEFINE_SPINLOCK(xfrm_km_lock
);
1913 int xfrm_register_km(struct xfrm_mgr
*km
)
1915 spin_lock_bh(&xfrm_km_lock
);
1916 list_add_tail_rcu(&km
->list
, &xfrm_km_list
);
1917 spin_unlock_bh(&xfrm_km_lock
);
1920 EXPORT_SYMBOL(xfrm_register_km
);
1922 int xfrm_unregister_km(struct xfrm_mgr
*km
)
1924 spin_lock_bh(&xfrm_km_lock
);
1925 list_del_rcu(&km
->list
);
1926 spin_unlock_bh(&xfrm_km_lock
);
1930 EXPORT_SYMBOL(xfrm_unregister_km
);
1932 int xfrm_state_register_afinfo(struct xfrm_state_afinfo
*afinfo
)
1936 if (WARN_ON(afinfo
->family
>= NPROTO
))
1937 return -EAFNOSUPPORT
;
1939 spin_lock_bh(&xfrm_state_afinfo_lock
);
1940 if (unlikely(xfrm_state_afinfo
[afinfo
->family
] != NULL
))
1943 rcu_assign_pointer(xfrm_state_afinfo
[afinfo
->family
], afinfo
);
1944 spin_unlock_bh(&xfrm_state_afinfo_lock
);
1947 EXPORT_SYMBOL(xfrm_state_register_afinfo
);
1949 int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo
*afinfo
)
1951 int err
= 0, family
= afinfo
->family
;
1953 if (WARN_ON(family
>= NPROTO
))
1954 return -EAFNOSUPPORT
;
1956 spin_lock_bh(&xfrm_state_afinfo_lock
);
1957 if (likely(xfrm_state_afinfo
[afinfo
->family
] != NULL
)) {
1958 if (rcu_access_pointer(xfrm_state_afinfo
[family
]) != afinfo
)
1961 RCU_INIT_POINTER(xfrm_state_afinfo
[afinfo
->family
], NULL
);
1963 spin_unlock_bh(&xfrm_state_afinfo_lock
);
1967 EXPORT_SYMBOL(xfrm_state_unregister_afinfo
);
1969 struct xfrm_state_afinfo
*xfrm_state_afinfo_get_rcu(unsigned int family
)
1971 if (unlikely(family
>= NPROTO
))
1974 return rcu_dereference(xfrm_state_afinfo
[family
]);
1977 struct xfrm_state_afinfo
*xfrm_state_get_afinfo(unsigned int family
)
1979 struct xfrm_state_afinfo
*afinfo
;
1980 if (unlikely(family
>= NPROTO
))
1983 afinfo
= rcu_dereference(xfrm_state_afinfo
[family
]);
1984 if (unlikely(!afinfo
))
1989 /* Temporarily located here until net/xfrm/xfrm_tunnel.c is created */
1990 void xfrm_state_delete_tunnel(struct xfrm_state
*x
)
1993 struct xfrm_state
*t
= x
->tunnel
;
1995 if (atomic_read(&t
->tunnel_users
) == 2)
1996 xfrm_state_delete(t
);
1997 atomic_dec(&t
->tunnel_users
);
2002 EXPORT_SYMBOL(xfrm_state_delete_tunnel
);
2004 int xfrm_state_mtu(struct xfrm_state
*x
, int mtu
)
2006 const struct xfrm_type
*type
= READ_ONCE(x
->type
);
2008 if (x
->km
.state
== XFRM_STATE_VALID
&&
2009 type
&& type
->get_mtu
)
2010 return type
->get_mtu(x
, mtu
);
2012 return mtu
- x
->props
.header_len
;
2015 int __xfrm_init_state(struct xfrm_state
*x
, bool init_replay
)
2017 struct xfrm_state_afinfo
*afinfo
;
2018 struct xfrm_mode
*inner_mode
;
2019 int family
= x
->props
.family
;
2022 err
= -EAFNOSUPPORT
;
2023 afinfo
= xfrm_state_get_afinfo(family
);
2028 if (afinfo
->init_flags
)
2029 err
= afinfo
->init_flags(x
);
2036 err
= -EPROTONOSUPPORT
;
2038 if (x
->sel
.family
!= AF_UNSPEC
) {
2039 inner_mode
= xfrm_get_mode(x
->props
.mode
, x
->sel
.family
);
2040 if (inner_mode
== NULL
)
2043 if (!(inner_mode
->flags
& XFRM_MODE_FLAG_TUNNEL
) &&
2044 family
!= x
->sel
.family
) {
2045 xfrm_put_mode(inner_mode
);
2049 x
->inner_mode
= inner_mode
;
2051 struct xfrm_mode
*inner_mode_iaf
;
2052 int iafamily
= AF_INET
;
2054 inner_mode
= xfrm_get_mode(x
->props
.mode
, x
->props
.family
);
2055 if (inner_mode
== NULL
)
2058 if (!(inner_mode
->flags
& XFRM_MODE_FLAG_TUNNEL
)) {
2059 xfrm_put_mode(inner_mode
);
2062 x
->inner_mode
= inner_mode
;
2064 if (x
->props
.family
== AF_INET
)
2065 iafamily
= AF_INET6
;
2067 inner_mode_iaf
= xfrm_get_mode(x
->props
.mode
, iafamily
);
2068 if (inner_mode_iaf
) {
2069 if (inner_mode_iaf
->flags
& XFRM_MODE_FLAG_TUNNEL
)
2070 x
->inner_mode_iaf
= inner_mode_iaf
;
2072 xfrm_put_mode(inner_mode_iaf
);
2076 x
->type
= xfrm_get_type(x
->id
.proto
, family
);
2077 if (x
->type
== NULL
)
2080 err
= x
->type
->init_state(x
);
2084 x
->outer_mode
= xfrm_get_mode(x
->props
.mode
, family
);
2085 if (x
->outer_mode
== NULL
) {
2086 err
= -EPROTONOSUPPORT
;
2091 err
= xfrm_init_replay(x
);
2096 x
->km
.state
= XFRM_STATE_VALID
;
2102 EXPORT_SYMBOL(__xfrm_init_state
);
2104 int xfrm_init_state(struct xfrm_state
*x
)
2106 return __xfrm_init_state(x
, true);
2109 EXPORT_SYMBOL(xfrm_init_state
);
2111 int __net_init
xfrm_state_init(struct net
*net
)
2115 INIT_LIST_HEAD(&net
->xfrm
.state_all
);
2117 sz
= sizeof(struct hlist_head
) * 8;
2119 net
->xfrm
.state_bydst
= xfrm_hash_alloc(sz
);
2120 if (!net
->xfrm
.state_bydst
)
2122 net
->xfrm
.state_bysrc
= xfrm_hash_alloc(sz
);
2123 if (!net
->xfrm
.state_bysrc
)
2125 net
->xfrm
.state_byspi
= xfrm_hash_alloc(sz
);
2126 if (!net
->xfrm
.state_byspi
)
2128 net
->xfrm
.state_hmask
= ((sz
/ sizeof(struct hlist_head
)) - 1);
2130 net
->xfrm
.state_num
= 0;
2131 INIT_WORK(&net
->xfrm
.state_hash_work
, xfrm_hash_resize
);
2132 spin_lock_init(&net
->xfrm
.xfrm_state_lock
);
2136 xfrm_hash_free(net
->xfrm
.state_bysrc
, sz
);
2138 xfrm_hash_free(net
->xfrm
.state_bydst
, sz
);
2143 void xfrm_state_fini(struct net
*net
)
2147 flush_work(&net
->xfrm
.state_hash_work
);
2148 xfrm_state_flush(net
, IPSEC_PROTO_ANY
, false);
2149 flush_work(&xfrm_state_gc_work
);
2151 WARN_ON(!list_empty(&net
->xfrm
.state_all
));
2153 sz
= (net
->xfrm
.state_hmask
+ 1) * sizeof(struct hlist_head
);
2154 WARN_ON(!hlist_empty(net
->xfrm
.state_byspi
));
2155 xfrm_hash_free(net
->xfrm
.state_byspi
, sz
);
2156 WARN_ON(!hlist_empty(net
->xfrm
.state_bysrc
));
2157 xfrm_hash_free(net
->xfrm
.state_bysrc
, sz
);
2158 WARN_ON(!hlist_empty(net
->xfrm
.state_bydst
));
2159 xfrm_hash_free(net
->xfrm
.state_bydst
, sz
);
2162 #ifdef CONFIG_AUDITSYSCALL
2163 static void xfrm_audit_helper_sainfo(struct xfrm_state
*x
,
2164 struct audit_buffer
*audit_buf
)
2166 struct xfrm_sec_ctx
*ctx
= x
->security
;
2167 u32 spi
= ntohl(x
->id
.spi
);
2170 audit_log_format(audit_buf
, " sec_alg=%u sec_doi=%u sec_obj=%s",
2171 ctx
->ctx_alg
, ctx
->ctx_doi
, ctx
->ctx_str
);
2173 switch (x
->props
.family
) {
2175 audit_log_format(audit_buf
, " src=%pI4 dst=%pI4",
2176 &x
->props
.saddr
.a4
, &x
->id
.daddr
.a4
);
2179 audit_log_format(audit_buf
, " src=%pI6 dst=%pI6",
2180 x
->props
.saddr
.a6
, x
->id
.daddr
.a6
);
2184 audit_log_format(audit_buf
, " spi=%u(0x%x)", spi
, spi
);
2187 static void xfrm_audit_helper_pktinfo(struct sk_buff
*skb
, u16 family
,
2188 struct audit_buffer
*audit_buf
)
2190 const struct iphdr
*iph4
;
2191 const struct ipv6hdr
*iph6
;
2196 audit_log_format(audit_buf
, " src=%pI4 dst=%pI4",
2197 &iph4
->saddr
, &iph4
->daddr
);
2200 iph6
= ipv6_hdr(skb
);
2201 audit_log_format(audit_buf
,
2202 " src=%pI6 dst=%pI6 flowlbl=0x%x%02x%02x",
2203 &iph6
->saddr
, &iph6
->daddr
,
2204 iph6
->flow_lbl
[0] & 0x0f,
2211 void xfrm_audit_state_add(struct xfrm_state
*x
, int result
, bool task_valid
)
2213 struct audit_buffer
*audit_buf
;
2215 audit_buf
= xfrm_audit_start("SAD-add");
2216 if (audit_buf
== NULL
)
2218 xfrm_audit_helper_usrinfo(task_valid
, audit_buf
);
2219 xfrm_audit_helper_sainfo(x
, audit_buf
);
2220 audit_log_format(audit_buf
, " res=%u", result
);
2221 audit_log_end(audit_buf
);
2223 EXPORT_SYMBOL_GPL(xfrm_audit_state_add
);
2225 void xfrm_audit_state_delete(struct xfrm_state
*x
, int result
, bool task_valid
)
2227 struct audit_buffer
*audit_buf
;
2229 audit_buf
= xfrm_audit_start("SAD-delete");
2230 if (audit_buf
== NULL
)
2232 xfrm_audit_helper_usrinfo(task_valid
, audit_buf
);
2233 xfrm_audit_helper_sainfo(x
, audit_buf
);
2234 audit_log_format(audit_buf
, " res=%u", result
);
2235 audit_log_end(audit_buf
);
2237 EXPORT_SYMBOL_GPL(xfrm_audit_state_delete
);
2239 void xfrm_audit_state_replay_overflow(struct xfrm_state
*x
,
2240 struct sk_buff
*skb
)
2242 struct audit_buffer
*audit_buf
;
2245 audit_buf
= xfrm_audit_start("SA-replay-overflow");
2246 if (audit_buf
== NULL
)
2248 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2249 /* don't record the sequence number because it's inherent in this kind
2250 * of audit message */
2251 spi
= ntohl(x
->id
.spi
);
2252 audit_log_format(audit_buf
, " spi=%u(0x%x)", spi
, spi
);
2253 audit_log_end(audit_buf
);
2255 EXPORT_SYMBOL_GPL(xfrm_audit_state_replay_overflow
);
2257 void xfrm_audit_state_replay(struct xfrm_state
*x
,
2258 struct sk_buff
*skb
, __be32 net_seq
)
2260 struct audit_buffer
*audit_buf
;
2263 audit_buf
= xfrm_audit_start("SA-replayed-pkt");
2264 if (audit_buf
== NULL
)
2266 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2267 spi
= ntohl(x
->id
.spi
);
2268 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2269 spi
, spi
, ntohl(net_seq
));
2270 audit_log_end(audit_buf
);
2272 EXPORT_SYMBOL_GPL(xfrm_audit_state_replay
);
2274 void xfrm_audit_state_notfound_simple(struct sk_buff
*skb
, u16 family
)
2276 struct audit_buffer
*audit_buf
;
2278 audit_buf
= xfrm_audit_start("SA-notfound");
2279 if (audit_buf
== NULL
)
2281 xfrm_audit_helper_pktinfo(skb
, family
, audit_buf
);
2282 audit_log_end(audit_buf
);
2284 EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound_simple
);
2286 void xfrm_audit_state_notfound(struct sk_buff
*skb
, u16 family
,
2287 __be32 net_spi
, __be32 net_seq
)
2289 struct audit_buffer
*audit_buf
;
2292 audit_buf
= xfrm_audit_start("SA-notfound");
2293 if (audit_buf
== NULL
)
2295 xfrm_audit_helper_pktinfo(skb
, family
, audit_buf
);
2296 spi
= ntohl(net_spi
);
2297 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2298 spi
, spi
, ntohl(net_seq
));
2299 audit_log_end(audit_buf
);
2301 EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound
);
2303 void xfrm_audit_state_icvfail(struct xfrm_state
*x
,
2304 struct sk_buff
*skb
, u8 proto
)
2306 struct audit_buffer
*audit_buf
;
2310 audit_buf
= xfrm_audit_start("SA-icv-failure");
2311 if (audit_buf
== NULL
)
2313 xfrm_audit_helper_pktinfo(skb
, x
->props
.family
, audit_buf
);
2314 if (xfrm_parse_spi(skb
, proto
, &net_spi
, &net_seq
) == 0) {
2315 u32 spi
= ntohl(net_spi
);
2316 audit_log_format(audit_buf
, " spi=%u(0x%x) seqno=%u",
2317 spi
, spi
, ntohl(net_seq
));
2319 audit_log_end(audit_buf
);
2321 EXPORT_SYMBOL_GPL(xfrm_audit_state_icvfail
);
2322 #endif /* CONFIG_AUDITSYSCALL */