2 * net/key/af_key.c An implementation of PF_KEYv2 sockets.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Maxim Giryaev <gem@asplinux.ru>
10 * David S. Miller <davem@redhat.com>
11 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
12 * Kunihiro Ishiguro <kunihiro@ipinfusion.com>
13 * Kazunori MIYAZAWA / USAGI Project <miyazawa@linux-ipv6.org>
14 * Derek Atkins <derek@ihtfp.com>
17 #include <linux/capability.h>
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/socket.h>
21 #include <linux/pfkeyv2.h>
22 #include <linux/ipsec.h>
23 #include <linux/skbuff.h>
24 #include <linux/rtnetlink.h>
26 #include <linux/in6.h>
27 #include <linux/proc_fs.h>
28 #include <linux/init.h>
33 #define _X2KEY(x) ((x) == XFRM_INF ? 0 : (x))
34 #define _KEY2X(x) ((x) == 0 ? XFRM_INF : (x))
37 /* List of all pfkey sockets. */
38 static HLIST_HEAD(pfkey_table
);
39 static DECLARE_WAIT_QUEUE_HEAD(pfkey_table_wait
);
40 static DEFINE_RWLOCK(pfkey_table_lock
);
41 static atomic_t pfkey_table_users
= ATOMIC_INIT(0);
43 static atomic_t pfkey_socks_nr
= ATOMIC_INIT(0);
46 /* struct sock must be the first member of struct pfkey_sock */
52 static inline struct pfkey_sock
*pfkey_sk(struct sock
*sk
)
54 return (struct pfkey_sock
*)sk
;
57 static void pfkey_sock_destruct(struct sock
*sk
)
59 skb_queue_purge(&sk
->sk_receive_queue
);
61 if (!sock_flag(sk
, SOCK_DEAD
)) {
62 printk("Attempt to release alive pfkey socket: %p\n", sk
);
66 BUG_TRAP(!atomic_read(&sk
->sk_rmem_alloc
));
67 BUG_TRAP(!atomic_read(&sk
->sk_wmem_alloc
));
69 atomic_dec(&pfkey_socks_nr
);
72 static void pfkey_table_grab(void)
74 write_lock_bh(&pfkey_table_lock
);
76 if (atomic_read(&pfkey_table_users
)) {
77 DECLARE_WAITQUEUE(wait
, current
);
79 add_wait_queue_exclusive(&pfkey_table_wait
, &wait
);
81 set_current_state(TASK_UNINTERRUPTIBLE
);
82 if (atomic_read(&pfkey_table_users
) == 0)
84 write_unlock_bh(&pfkey_table_lock
);
86 write_lock_bh(&pfkey_table_lock
);
89 __set_current_state(TASK_RUNNING
);
90 remove_wait_queue(&pfkey_table_wait
, &wait
);
94 static __inline__
void pfkey_table_ungrab(void)
96 write_unlock_bh(&pfkey_table_lock
);
97 wake_up(&pfkey_table_wait
);
100 static __inline__
void pfkey_lock_table(void)
102 /* read_lock() synchronizes us to pfkey_table_grab */
104 read_lock(&pfkey_table_lock
);
105 atomic_inc(&pfkey_table_users
);
106 read_unlock(&pfkey_table_lock
);
109 static __inline__
void pfkey_unlock_table(void)
111 if (atomic_dec_and_test(&pfkey_table_users
))
112 wake_up(&pfkey_table_wait
);
116 static const struct proto_ops pfkey_ops
;
118 static void pfkey_insert(struct sock
*sk
)
121 sk_add_node(sk
, &pfkey_table
);
122 pfkey_table_ungrab();
125 static void pfkey_remove(struct sock
*sk
)
128 sk_del_node_init(sk
);
129 pfkey_table_ungrab();
132 static struct proto key_proto
= {
134 .owner
= THIS_MODULE
,
135 .obj_size
= sizeof(struct pfkey_sock
),
138 static int pfkey_create(struct socket
*sock
, int protocol
)
143 if (!capable(CAP_NET_ADMIN
))
145 if (sock
->type
!= SOCK_RAW
)
146 return -ESOCKTNOSUPPORT
;
147 if (protocol
!= PF_KEY_V2
)
148 return -EPROTONOSUPPORT
;
151 sk
= sk_alloc(PF_KEY
, GFP_KERNEL
, &key_proto
, 1);
155 sock
->ops
= &pfkey_ops
;
156 sock_init_data(sock
, sk
);
158 sk
->sk_family
= PF_KEY
;
159 sk
->sk_destruct
= pfkey_sock_destruct
;
161 atomic_inc(&pfkey_socks_nr
);
170 static int pfkey_release(struct socket
*sock
)
172 struct sock
*sk
= sock
->sk
;
181 skb_queue_purge(&sk
->sk_write_queue
);
187 static int pfkey_broadcast_one(struct sk_buff
*skb
, struct sk_buff
**skb2
,
188 gfp_t allocation
, struct sock
*sk
)
194 if (atomic_read(&skb
->users
) != 1) {
195 *skb2
= skb_clone(skb
, allocation
);
198 atomic_inc(&skb
->users
);
202 if (atomic_read(&sk
->sk_rmem_alloc
) <= sk
->sk_rcvbuf
) {
204 skb_set_owner_r(*skb2
, sk
);
205 skb_queue_tail(&sk
->sk_receive_queue
, *skb2
);
206 sk
->sk_data_ready(sk
, (*skb2
)->len
);
215 /* Send SKB to all pfkey sockets matching selected criteria. */
216 #define BROADCAST_ALL 0
217 #define BROADCAST_ONE 1
218 #define BROADCAST_REGISTERED 2
219 #define BROADCAST_PROMISC_ONLY 4
220 static int pfkey_broadcast(struct sk_buff
*skb
, gfp_t allocation
,
221 int broadcast_flags
, struct sock
*one_sk
)
224 struct hlist_node
*node
;
225 struct sk_buff
*skb2
= NULL
;
228 /* XXX Do we need something like netlink_overrun? I think
229 * XXX PF_KEY socket apps will not mind current behavior.
235 sk_for_each(sk
, node
, &pfkey_table
) {
236 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
239 /* Yes, it means that if you are meant to receive this
240 * pfkey message you receive it twice as promiscuous
244 pfkey_broadcast_one(skb
, &skb2
, allocation
, sk
);
246 /* the exact target will be processed later */
249 if (broadcast_flags
!= BROADCAST_ALL
) {
250 if (broadcast_flags
& BROADCAST_PROMISC_ONLY
)
252 if ((broadcast_flags
& BROADCAST_REGISTERED
) &&
255 if (broadcast_flags
& BROADCAST_ONE
)
259 err2
= pfkey_broadcast_one(skb
, &skb2
, allocation
, sk
);
261 /* Error is cleare after succecful sending to at least one
263 if ((broadcast_flags
& BROADCAST_REGISTERED
) && err
)
266 pfkey_unlock_table();
269 err
= pfkey_broadcast_one(skb
, &skb2
, allocation
, one_sk
);
277 static inline void pfkey_hdr_dup(struct sadb_msg
*new, struct sadb_msg
*orig
)
282 static int pfkey_error(struct sadb_msg
*orig
, int err
, struct sock
*sk
)
284 struct sk_buff
*skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_KERNEL
);
285 struct sadb_msg
*hdr
;
290 /* Woe be to the platform trying to support PFKEY yet
291 * having normal errnos outside the 1-255 range, inclusive.
294 if (err
== ERESTARTSYS
||
295 err
== ERESTARTNOHAND
||
296 err
== ERESTARTNOINTR
)
300 BUG_ON(err
<= 0 || err
>= 256);
302 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
303 pfkey_hdr_dup(hdr
, orig
);
304 hdr
->sadb_msg_errno
= (uint8_t) err
;
305 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) /
308 pfkey_broadcast(skb
, GFP_KERNEL
, BROADCAST_ONE
, sk
);
313 static u8 sadb_ext_min_len
[] = {
314 [SADB_EXT_RESERVED
] = (u8
) 0,
315 [SADB_EXT_SA
] = (u8
) sizeof(struct sadb_sa
),
316 [SADB_EXT_LIFETIME_CURRENT
] = (u8
) sizeof(struct sadb_lifetime
),
317 [SADB_EXT_LIFETIME_HARD
] = (u8
) sizeof(struct sadb_lifetime
),
318 [SADB_EXT_LIFETIME_SOFT
] = (u8
) sizeof(struct sadb_lifetime
),
319 [SADB_EXT_ADDRESS_SRC
] = (u8
) sizeof(struct sadb_address
),
320 [SADB_EXT_ADDRESS_DST
] = (u8
) sizeof(struct sadb_address
),
321 [SADB_EXT_ADDRESS_PROXY
] = (u8
) sizeof(struct sadb_address
),
322 [SADB_EXT_KEY_AUTH
] = (u8
) sizeof(struct sadb_key
),
323 [SADB_EXT_KEY_ENCRYPT
] = (u8
) sizeof(struct sadb_key
),
324 [SADB_EXT_IDENTITY_SRC
] = (u8
) sizeof(struct sadb_ident
),
325 [SADB_EXT_IDENTITY_DST
] = (u8
) sizeof(struct sadb_ident
),
326 [SADB_EXT_SENSITIVITY
] = (u8
) sizeof(struct sadb_sens
),
327 [SADB_EXT_PROPOSAL
] = (u8
) sizeof(struct sadb_prop
),
328 [SADB_EXT_SUPPORTED_AUTH
] = (u8
) sizeof(struct sadb_supported
),
329 [SADB_EXT_SUPPORTED_ENCRYPT
] = (u8
) sizeof(struct sadb_supported
),
330 [SADB_EXT_SPIRANGE
] = (u8
) sizeof(struct sadb_spirange
),
331 [SADB_X_EXT_KMPRIVATE
] = (u8
) sizeof(struct sadb_x_kmprivate
),
332 [SADB_X_EXT_POLICY
] = (u8
) sizeof(struct sadb_x_policy
),
333 [SADB_X_EXT_SA2
] = (u8
) sizeof(struct sadb_x_sa2
),
334 [SADB_X_EXT_NAT_T_TYPE
] = (u8
) sizeof(struct sadb_x_nat_t_type
),
335 [SADB_X_EXT_NAT_T_SPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
336 [SADB_X_EXT_NAT_T_DPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
337 [SADB_X_EXT_NAT_T_OA
] = (u8
) sizeof(struct sadb_address
),
338 [SADB_X_EXT_SEC_CTX
] = (u8
) sizeof(struct sadb_x_sec_ctx
),
341 /* Verify sadb_address_{len,prefixlen} against sa_family. */
342 static int verify_address_len(void *p
)
344 struct sadb_address
*sp
= p
;
345 struct sockaddr
*addr
= (struct sockaddr
*)(sp
+ 1);
346 struct sockaddr_in
*sin
;
347 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
348 struct sockaddr_in6
*sin6
;
352 switch (addr
->sa_family
) {
354 len
= sizeof(*sp
) + sizeof(*sin
) + (sizeof(uint64_t) - 1);
355 len
/= sizeof(uint64_t);
356 if (sp
->sadb_address_len
!= len
||
357 sp
->sadb_address_prefixlen
> 32)
360 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
362 len
= sizeof(*sp
) + sizeof(*sin6
) + (sizeof(uint64_t) - 1);
363 len
/= sizeof(uint64_t);
364 if (sp
->sadb_address_len
!= len
||
365 sp
->sadb_address_prefixlen
> 128)
370 /* It is user using kernel to keep track of security
371 * associations for another protocol, such as
372 * OSPF/RSVP/RIPV2/MIP. It is user's job to verify
375 * XXX Actually, association/policy database is not yet
376 * XXX able to cope with arbitrary sockaddr families.
377 * XXX When it can, remove this -EINVAL. -DaveM
386 static inline int pfkey_sec_ctx_len(struct sadb_x_sec_ctx
*sec_ctx
)
390 len
+= sizeof(struct sadb_x_sec_ctx
);
391 len
+= sec_ctx
->sadb_x_ctx_len
;
392 len
+= sizeof(uint64_t) - 1;
393 len
/= sizeof(uint64_t);
398 static inline int verify_sec_ctx_len(void *p
)
400 struct sadb_x_sec_ctx
*sec_ctx
= (struct sadb_x_sec_ctx
*)p
;
403 if (sec_ctx
->sadb_x_ctx_len
> PAGE_SIZE
)
406 len
= pfkey_sec_ctx_len(sec_ctx
);
408 if (sec_ctx
->sadb_x_sec_len
!= len
)
414 static inline struct xfrm_user_sec_ctx
*pfkey_sadb2xfrm_user_sec_ctx(struct sadb_x_sec_ctx
*sec_ctx
)
416 struct xfrm_user_sec_ctx
*uctx
= NULL
;
417 int ctx_size
= sec_ctx
->sadb_x_ctx_len
;
419 uctx
= kmalloc((sizeof(*uctx
)+ctx_size
), GFP_KERNEL
);
424 uctx
->len
= pfkey_sec_ctx_len(sec_ctx
);
425 uctx
->exttype
= sec_ctx
->sadb_x_sec_exttype
;
426 uctx
->ctx_doi
= sec_ctx
->sadb_x_ctx_doi
;
427 uctx
->ctx_alg
= sec_ctx
->sadb_x_ctx_alg
;
428 uctx
->ctx_len
= sec_ctx
->sadb_x_ctx_len
;
429 memcpy(uctx
+ 1, sec_ctx
+ 1,
435 static int present_and_same_family(struct sadb_address
*src
,
436 struct sadb_address
*dst
)
438 struct sockaddr
*s_addr
, *d_addr
;
443 s_addr
= (struct sockaddr
*)(src
+ 1);
444 d_addr
= (struct sockaddr
*)(dst
+ 1);
445 if (s_addr
->sa_family
!= d_addr
->sa_family
)
447 if (s_addr
->sa_family
!= AF_INET
448 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
449 && s_addr
->sa_family
!= AF_INET6
457 static int parse_exthdrs(struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
459 char *p
= (char *) hdr
;
465 struct sadb_ext
*ehdr
= (struct sadb_ext
*) p
;
469 ext_len
= ehdr
->sadb_ext_len
;
470 ext_len
*= sizeof(uint64_t);
471 ext_type
= ehdr
->sadb_ext_type
;
472 if (ext_len
< sizeof(uint64_t) ||
474 ext_type
== SADB_EXT_RESERVED
)
477 if (ext_type
<= SADB_EXT_MAX
) {
478 int min
= (int) sadb_ext_min_len
[ext_type
];
481 if (ext_hdrs
[ext_type
-1] != NULL
)
483 if (ext_type
== SADB_EXT_ADDRESS_SRC
||
484 ext_type
== SADB_EXT_ADDRESS_DST
||
485 ext_type
== SADB_EXT_ADDRESS_PROXY
||
486 ext_type
== SADB_X_EXT_NAT_T_OA
) {
487 if (verify_address_len(p
))
490 if (ext_type
== SADB_X_EXT_SEC_CTX
) {
491 if (verify_sec_ctx_len(p
))
494 ext_hdrs
[ext_type
-1] = p
;
504 pfkey_satype2proto(uint8_t satype
)
507 case SADB_SATYPE_UNSPEC
:
508 return IPSEC_PROTO_ANY
;
511 case SADB_SATYPE_ESP
:
513 case SADB_X_SATYPE_IPCOMP
:
523 pfkey_proto2satype(uint16_t proto
)
527 return SADB_SATYPE_AH
;
529 return SADB_SATYPE_ESP
;
531 return SADB_X_SATYPE_IPCOMP
;
539 /* BTW, this scheme means that there is no way with PFKEY2 sockets to
540 * say specifically 'just raw sockets' as we encode them as 255.
543 static uint8_t pfkey_proto_to_xfrm(uint8_t proto
)
545 return (proto
== IPSEC_PROTO_ANY
? 0 : proto
);
548 static uint8_t pfkey_proto_from_xfrm(uint8_t proto
)
550 return (proto
? proto
: IPSEC_PROTO_ANY
);
553 static int pfkey_sadb_addr2xfrm_addr(struct sadb_address
*addr
,
554 xfrm_address_t
*xaddr
)
556 switch (((struct sockaddr
*)(addr
+ 1))->sa_family
) {
559 ((struct sockaddr_in
*)(addr
+ 1))->sin_addr
.s_addr
;
561 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
564 &((struct sockaddr_in6
*)(addr
+ 1))->sin6_addr
,
565 sizeof(struct in6_addr
));
574 static struct xfrm_state
*pfkey_xfrm_state_lookup(struct sadb_msg
*hdr
, void **ext_hdrs
)
577 struct sadb_address
*addr
;
579 unsigned short family
;
580 xfrm_address_t
*xaddr
;
582 sa
= (struct sadb_sa
*) ext_hdrs
[SADB_EXT_SA
-1];
586 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
590 /* sadb_address_len should be checked by caller */
591 addr
= (struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
595 family
= ((struct sockaddr
*)(addr
+ 1))->sa_family
;
598 xaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(addr
+ 1))->sin_addr
;
600 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
602 xaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(addr
+ 1))->sin6_addr
;
612 return xfrm_state_lookup(xaddr
, sa
->sadb_sa_spi
, proto
, family
);
615 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
617 pfkey_sockaddr_size(sa_family_t family
)
621 return PFKEY_ALIGN8(sizeof(struct sockaddr_in
));
622 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
624 return PFKEY_ALIGN8(sizeof(struct sockaddr_in6
));
632 static struct sk_buff
* pfkey_xfrm_state2msg(struct xfrm_state
*x
, int add_keys
, int hsc
)
635 struct sadb_msg
*hdr
;
637 struct sadb_lifetime
*lifetime
;
638 struct sadb_address
*addr
;
639 struct sadb_key
*key
;
640 struct sadb_x_sa2
*sa2
;
641 struct sockaddr_in
*sin
;
642 struct sadb_x_sec_ctx
*sec_ctx
;
643 struct xfrm_sec_ctx
*xfrm_ctx
;
645 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
646 struct sockaddr_in6
*sin6
;
649 int auth_key_size
= 0;
650 int encrypt_key_size
= 0;
652 struct xfrm_encap_tmpl
*natt
= NULL
;
654 /* address family check */
655 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
657 return ERR_PTR(-EINVAL
);
659 /* base, SA, (lifetime (HSC),) address(SD), (address(P),)
660 key(AE), (identity(SD),) (sensitivity)> */
661 size
= sizeof(struct sadb_msg
) +sizeof(struct sadb_sa
) +
662 sizeof(struct sadb_lifetime
) +
663 ((hsc
& 1) ? sizeof(struct sadb_lifetime
) : 0) +
664 ((hsc
& 2) ? sizeof(struct sadb_lifetime
) : 0) +
665 sizeof(struct sadb_address
)*2 +
667 sizeof(struct sadb_x_sa2
);
669 if ((xfrm_ctx
= x
->security
)) {
670 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
671 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
674 /* identity & sensitivity */
676 if ((x
->props
.family
== AF_INET
&&
677 x
->sel
.saddr
.a4
!= x
->props
.saddr
.a4
)
678 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
679 || (x
->props
.family
== AF_INET6
&&
680 memcmp (x
->sel
.saddr
.a6
, x
->props
.saddr
.a6
, sizeof (struct in6_addr
)))
683 size
+= sizeof(struct sadb_address
) + sockaddr_size
;
686 if (x
->aalg
&& x
->aalg
->alg_key_len
) {
688 PFKEY_ALIGN8((x
->aalg
->alg_key_len
+ 7) / 8);
689 size
+= sizeof(struct sadb_key
) + auth_key_size
;
691 if (x
->ealg
&& x
->ealg
->alg_key_len
) {
693 PFKEY_ALIGN8((x
->ealg
->alg_key_len
+7) / 8);
694 size
+= sizeof(struct sadb_key
) + encrypt_key_size
;
700 if (natt
&& natt
->encap_type
) {
701 size
+= sizeof(struct sadb_x_nat_t_type
);
702 size
+= sizeof(struct sadb_x_nat_t_port
);
703 size
+= sizeof(struct sadb_x_nat_t_port
);
706 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
708 return ERR_PTR(-ENOBUFS
);
710 /* call should fill header later */
711 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
712 memset(hdr
, 0, size
); /* XXX do we need this ? */
713 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
716 sa
= (struct sadb_sa
*) skb_put(skb
, sizeof(struct sadb_sa
));
717 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
718 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
719 sa
->sadb_sa_spi
= x
->id
.spi
;
720 sa
->sadb_sa_replay
= x
->props
.replay_window
;
721 switch (x
->km
.state
) {
722 case XFRM_STATE_VALID
:
723 sa
->sadb_sa_state
= x
->km
.dying
?
724 SADB_SASTATE_DYING
: SADB_SASTATE_MATURE
;
727 sa
->sadb_sa_state
= SADB_SASTATE_LARVAL
;
730 sa
->sadb_sa_state
= SADB_SASTATE_DEAD
;
733 sa
->sadb_sa_auth
= 0;
735 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byname(x
->aalg
->alg_name
, 0);
736 sa
->sadb_sa_auth
= a
? a
->desc
.sadb_alg_id
: 0;
738 sa
->sadb_sa_encrypt
= 0;
739 BUG_ON(x
->ealg
&& x
->calg
);
741 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byname(x
->ealg
->alg_name
, 0);
742 sa
->sadb_sa_encrypt
= a
? a
->desc
.sadb_alg_id
: 0;
744 /* KAME compatible: sadb_sa_encrypt is overloaded with calg id */
746 struct xfrm_algo_desc
*a
= xfrm_calg_get_byname(x
->calg
->alg_name
, 0);
747 sa
->sadb_sa_encrypt
= a
? a
->desc
.sadb_alg_id
: 0;
750 sa
->sadb_sa_flags
= 0;
751 if (x
->props
.flags
& XFRM_STATE_NOECN
)
752 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOECN
;
753 if (x
->props
.flags
& XFRM_STATE_DECAP_DSCP
)
754 sa
->sadb_sa_flags
|= SADB_SAFLAGS_DECAP_DSCP
;
755 if (x
->props
.flags
& XFRM_STATE_NOPMTUDISC
)
756 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOPMTUDISC
;
760 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
761 sizeof(struct sadb_lifetime
));
762 lifetime
->sadb_lifetime_len
=
763 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
764 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
765 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.hard_packet_limit
);
766 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.hard_byte_limit
);
767 lifetime
->sadb_lifetime_addtime
= x
->lft
.hard_add_expires_seconds
;
768 lifetime
->sadb_lifetime_usetime
= x
->lft
.hard_use_expires_seconds
;
772 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
773 sizeof(struct sadb_lifetime
));
774 lifetime
->sadb_lifetime_len
=
775 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
776 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
777 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.soft_packet_limit
);
778 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.soft_byte_limit
);
779 lifetime
->sadb_lifetime_addtime
= x
->lft
.soft_add_expires_seconds
;
780 lifetime
->sadb_lifetime_usetime
= x
->lft
.soft_use_expires_seconds
;
783 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
784 sizeof(struct sadb_lifetime
));
785 lifetime
->sadb_lifetime_len
=
786 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
787 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
788 lifetime
->sadb_lifetime_allocations
= x
->curlft
.packets
;
789 lifetime
->sadb_lifetime_bytes
= x
->curlft
.bytes
;
790 lifetime
->sadb_lifetime_addtime
= x
->curlft
.add_time
;
791 lifetime
->sadb_lifetime_usetime
= x
->curlft
.use_time
;
793 addr
= (struct sadb_address
*) skb_put(skb
,
794 sizeof(struct sadb_address
)+sockaddr_size
);
795 addr
->sadb_address_len
=
796 (sizeof(struct sadb_address
)+sockaddr_size
)/
798 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
799 /* "if the ports are non-zero, then the sadb_address_proto field,
800 normally zero, MUST be filled in with the transport
801 protocol's number." - RFC2367 */
802 addr
->sadb_address_proto
= 0;
803 addr
->sadb_address_reserved
= 0;
804 if (x
->props
.family
== AF_INET
) {
805 addr
->sadb_address_prefixlen
= 32;
807 sin
= (struct sockaddr_in
*) (addr
+ 1);
808 sin
->sin_family
= AF_INET
;
809 sin
->sin_addr
.s_addr
= x
->props
.saddr
.a4
;
811 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
813 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
814 else if (x
->props
.family
== AF_INET6
) {
815 addr
->sadb_address_prefixlen
= 128;
817 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
818 sin6
->sin6_family
= AF_INET6
;
820 sin6
->sin6_flowinfo
= 0;
821 memcpy(&sin6
->sin6_addr
, x
->props
.saddr
.a6
,
822 sizeof(struct in6_addr
));
823 sin6
->sin6_scope_id
= 0;
830 addr
= (struct sadb_address
*) skb_put(skb
,
831 sizeof(struct sadb_address
)+sockaddr_size
);
832 addr
->sadb_address_len
=
833 (sizeof(struct sadb_address
)+sockaddr_size
)/
835 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
836 addr
->sadb_address_proto
= 0;
837 addr
->sadb_address_prefixlen
= 32; /* XXX */
838 addr
->sadb_address_reserved
= 0;
839 if (x
->props
.family
== AF_INET
) {
840 sin
= (struct sockaddr_in
*) (addr
+ 1);
841 sin
->sin_family
= AF_INET
;
842 sin
->sin_addr
.s_addr
= x
->id
.daddr
.a4
;
844 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
846 if (x
->sel
.saddr
.a4
!= x
->props
.saddr
.a4
) {
847 addr
= (struct sadb_address
*) skb_put(skb
,
848 sizeof(struct sadb_address
)+sockaddr_size
);
849 addr
->sadb_address_len
=
850 (sizeof(struct sadb_address
)+sockaddr_size
)/
852 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_PROXY
;
853 addr
->sadb_address_proto
=
854 pfkey_proto_from_xfrm(x
->sel
.proto
);
855 addr
->sadb_address_prefixlen
= x
->sel
.prefixlen_s
;
856 addr
->sadb_address_reserved
= 0;
858 sin
= (struct sockaddr_in
*) (addr
+ 1);
859 sin
->sin_family
= AF_INET
;
860 sin
->sin_addr
.s_addr
= x
->sel
.saddr
.a4
;
861 sin
->sin_port
= x
->sel
.sport
;
862 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
865 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
866 else if (x
->props
.family
== AF_INET6
) {
867 addr
->sadb_address_prefixlen
= 128;
869 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
870 sin6
->sin6_family
= AF_INET6
;
872 sin6
->sin6_flowinfo
= 0;
873 memcpy(&sin6
->sin6_addr
, x
->id
.daddr
.a6
, sizeof(struct in6_addr
));
874 sin6
->sin6_scope_id
= 0;
876 if (memcmp (x
->sel
.saddr
.a6
, x
->props
.saddr
.a6
,
877 sizeof(struct in6_addr
))) {
878 addr
= (struct sadb_address
*) skb_put(skb
,
879 sizeof(struct sadb_address
)+sockaddr_size
);
880 addr
->sadb_address_len
=
881 (sizeof(struct sadb_address
)+sockaddr_size
)/
883 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_PROXY
;
884 addr
->sadb_address_proto
=
885 pfkey_proto_from_xfrm(x
->sel
.proto
);
886 addr
->sadb_address_prefixlen
= x
->sel
.prefixlen_s
;
887 addr
->sadb_address_reserved
= 0;
889 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
890 sin6
->sin6_family
= AF_INET6
;
891 sin6
->sin6_port
= x
->sel
.sport
;
892 sin6
->sin6_flowinfo
= 0;
893 memcpy(&sin6
->sin6_addr
, x
->sel
.saddr
.a6
,
894 sizeof(struct in6_addr
));
895 sin6
->sin6_scope_id
= 0;
903 if (add_keys
&& auth_key_size
) {
904 key
= (struct sadb_key
*) skb_put(skb
,
905 sizeof(struct sadb_key
)+auth_key_size
);
906 key
->sadb_key_len
= (sizeof(struct sadb_key
) + auth_key_size
) /
908 key
->sadb_key_exttype
= SADB_EXT_KEY_AUTH
;
909 key
->sadb_key_bits
= x
->aalg
->alg_key_len
;
910 key
->sadb_key_reserved
= 0;
911 memcpy(key
+ 1, x
->aalg
->alg_key
, (x
->aalg
->alg_key_len
+7)/8);
914 if (add_keys
&& encrypt_key_size
) {
915 key
= (struct sadb_key
*) skb_put(skb
,
916 sizeof(struct sadb_key
)+encrypt_key_size
);
917 key
->sadb_key_len
= (sizeof(struct sadb_key
) +
918 encrypt_key_size
) / sizeof(uint64_t);
919 key
->sadb_key_exttype
= SADB_EXT_KEY_ENCRYPT
;
920 key
->sadb_key_bits
= x
->ealg
->alg_key_len
;
921 key
->sadb_key_reserved
= 0;
922 memcpy(key
+ 1, x
->ealg
->alg_key
,
923 (x
->ealg
->alg_key_len
+7)/8);
927 sa2
= (struct sadb_x_sa2
*) skb_put(skb
, sizeof(struct sadb_x_sa2
));
928 sa2
->sadb_x_sa2_len
= sizeof(struct sadb_x_sa2
)/sizeof(uint64_t);
929 sa2
->sadb_x_sa2_exttype
= SADB_X_EXT_SA2
;
930 sa2
->sadb_x_sa2_mode
= x
->props
.mode
+ 1;
931 sa2
->sadb_x_sa2_reserved1
= 0;
932 sa2
->sadb_x_sa2_reserved2
= 0;
933 sa2
->sadb_x_sa2_sequence
= 0;
934 sa2
->sadb_x_sa2_reqid
= x
->props
.reqid
;
936 if (natt
&& natt
->encap_type
) {
937 struct sadb_x_nat_t_type
*n_type
;
938 struct sadb_x_nat_t_port
*n_port
;
941 n_type
= (struct sadb_x_nat_t_type
*) skb_put(skb
, sizeof(*n_type
));
942 n_type
->sadb_x_nat_t_type_len
= sizeof(*n_type
)/sizeof(uint64_t);
943 n_type
->sadb_x_nat_t_type_exttype
= SADB_X_EXT_NAT_T_TYPE
;
944 n_type
->sadb_x_nat_t_type_type
= natt
->encap_type
;
945 n_type
->sadb_x_nat_t_type_reserved
[0] = 0;
946 n_type
->sadb_x_nat_t_type_reserved
[1] = 0;
947 n_type
->sadb_x_nat_t_type_reserved
[2] = 0;
950 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
951 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
952 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
953 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
954 n_port
->sadb_x_nat_t_port_reserved
= 0;
957 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
958 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
959 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
960 n_port
->sadb_x_nat_t_port_port
= natt
->encap_dport
;
961 n_port
->sadb_x_nat_t_port_reserved
= 0;
964 /* security context */
966 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
,
967 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
968 sec_ctx
->sadb_x_sec_len
=
969 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
970 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
971 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
972 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
973 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
974 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
981 static struct xfrm_state
* pfkey_msg2xfrm_state(struct sadb_msg
*hdr
,
984 struct xfrm_state
*x
;
985 struct sadb_lifetime
*lifetime
;
987 struct sadb_key
*key
;
988 struct sadb_x_sec_ctx
*sec_ctx
;
993 sa
= (struct sadb_sa
*) ext_hdrs
[SADB_EXT_SA
-1];
995 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
996 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
997 return ERR_PTR(-EINVAL
);
998 if (hdr
->sadb_msg_satype
== SADB_SATYPE_ESP
&&
999 !ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1])
1000 return ERR_PTR(-EINVAL
);
1001 if (hdr
->sadb_msg_satype
== SADB_SATYPE_AH
&&
1002 !ext_hdrs
[SADB_EXT_KEY_AUTH
-1])
1003 return ERR_PTR(-EINVAL
);
1004 if (!!ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1] !=
1005 !!ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1])
1006 return ERR_PTR(-EINVAL
);
1008 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1010 return ERR_PTR(-EINVAL
);
1012 /* default error is no buffer space */
1017 Only SADB_SASTATE_MATURE SAs may be submitted in an SADB_ADD message.
1018 SADB_SASTATE_LARVAL SAs are created by SADB_GETSPI and it is not
1019 sensible to add a new SA in the DYING or SADB_SASTATE_DEAD state.
1020 Therefore, the sadb_sa_state field of all submitted SAs MUST be
1021 SADB_SASTATE_MATURE and the kernel MUST return an error if this is
1024 However, KAME setkey always uses SADB_SASTATE_LARVAL.
1025 Hence, we have to _ignore_ sadb_sa_state, which is also reasonable.
1027 if (sa
->sadb_sa_auth
> SADB_AALG_MAX
||
1028 (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
&&
1029 sa
->sadb_sa_encrypt
> SADB_X_CALG_MAX
) ||
1030 sa
->sadb_sa_encrypt
> SADB_EALG_MAX
)
1031 return ERR_PTR(-EINVAL
);
1032 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_AUTH
-1];
1034 sa
->sadb_sa_auth
!= SADB_X_AALG_NULL
&&
1035 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1036 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1037 return ERR_PTR(-EINVAL
);
1038 key
= ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1040 sa
->sadb_sa_encrypt
!= SADB_EALG_NULL
&&
1041 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1042 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1043 return ERR_PTR(-EINVAL
);
1045 x
= xfrm_state_alloc();
1047 return ERR_PTR(-ENOBUFS
);
1049 x
->id
.proto
= proto
;
1050 x
->id
.spi
= sa
->sadb_sa_spi
;
1051 x
->props
.replay_window
= sa
->sadb_sa_replay
;
1052 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOECN
)
1053 x
->props
.flags
|= XFRM_STATE_NOECN
;
1054 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_DECAP_DSCP
)
1055 x
->props
.flags
|= XFRM_STATE_DECAP_DSCP
;
1056 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOPMTUDISC
)
1057 x
->props
.flags
|= XFRM_STATE_NOPMTUDISC
;
1059 lifetime
= (struct sadb_lifetime
*) ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1];
1060 if (lifetime
!= NULL
) {
1061 x
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1062 x
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1063 x
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1064 x
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1066 lifetime
= (struct sadb_lifetime
*) ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1];
1067 if (lifetime
!= NULL
) {
1068 x
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1069 x
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1070 x
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1071 x
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1074 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
1075 if (sec_ctx
!= NULL
) {
1076 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
1081 err
= security_xfrm_state_alloc(x
, uctx
);
1088 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_AUTH
-1];
1089 if (sa
->sadb_sa_auth
) {
1091 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byid(sa
->sadb_sa_auth
);
1097 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1098 x
->aalg
= kmalloc(sizeof(*x
->aalg
) + keysize
, GFP_KERNEL
);
1101 strcpy(x
->aalg
->alg_name
, a
->name
);
1102 x
->aalg
->alg_key_len
= 0;
1104 x
->aalg
->alg_key_len
= key
->sadb_key_bits
;
1105 memcpy(x
->aalg
->alg_key
, key
+1, keysize
);
1107 x
->props
.aalgo
= sa
->sadb_sa_auth
;
1108 /* x->algo.flags = sa->sadb_sa_flags; */
1110 if (sa
->sadb_sa_encrypt
) {
1111 if (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
) {
1112 struct xfrm_algo_desc
*a
= xfrm_calg_get_byid(sa
->sadb_sa_encrypt
);
1117 x
->calg
= kmalloc(sizeof(*x
->calg
), GFP_KERNEL
);
1120 strcpy(x
->calg
->alg_name
, a
->name
);
1121 x
->props
.calgo
= sa
->sadb_sa_encrypt
;
1124 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byid(sa
->sadb_sa_encrypt
);
1129 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1131 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1132 x
->ealg
= kmalloc(sizeof(*x
->ealg
) + keysize
, GFP_KERNEL
);
1135 strcpy(x
->ealg
->alg_name
, a
->name
);
1136 x
->ealg
->alg_key_len
= 0;
1138 x
->ealg
->alg_key_len
= key
->sadb_key_bits
;
1139 memcpy(x
->ealg
->alg_key
, key
+1, keysize
);
1141 x
->props
.ealgo
= sa
->sadb_sa_encrypt
;
1144 /* x->algo.flags = sa->sadb_sa_flags; */
1146 x
->props
.family
= pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1148 if (!x
->props
.family
) {
1149 err
= -EAFNOSUPPORT
;
1152 pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
1155 if (ext_hdrs
[SADB_X_EXT_SA2
-1]) {
1156 struct sadb_x_sa2
*sa2
= (void*)ext_hdrs
[SADB_X_EXT_SA2
-1];
1157 x
->props
.mode
= sa2
->sadb_x_sa2_mode
;
1160 x
->props
.reqid
= sa2
->sadb_x_sa2_reqid
;
1163 if (ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1]) {
1164 struct sadb_address
*addr
= ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1];
1166 /* Nobody uses this, but we try. */
1167 x
->sel
.family
= pfkey_sadb_addr2xfrm_addr(addr
, &x
->sel
.saddr
);
1168 x
->sel
.prefixlen_s
= addr
->sadb_address_prefixlen
;
1171 if (ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1]) {
1172 struct sadb_x_nat_t_type
* n_type
;
1173 struct xfrm_encap_tmpl
*natt
;
1175 x
->encap
= kmalloc(sizeof(*x
->encap
), GFP_KERNEL
);
1180 n_type
= ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1];
1181 natt
->encap_type
= n_type
->sadb_x_nat_t_type_type
;
1183 if (ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1]) {
1184 struct sadb_x_nat_t_port
* n_port
=
1185 ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1];
1186 natt
->encap_sport
= n_port
->sadb_x_nat_t_port_port
;
1188 if (ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1]) {
1189 struct sadb_x_nat_t_port
* n_port
=
1190 ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1];
1191 natt
->encap_dport
= n_port
->sadb_x_nat_t_port_port
;
1195 err
= xfrm_init_state(x
);
1199 x
->km
.seq
= hdr
->sadb_msg_seq
;
1203 x
->km
.state
= XFRM_STATE_DEAD
;
1205 return ERR_PTR(err
);
1208 static int pfkey_reserved(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1213 static int pfkey_getspi(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1215 struct sk_buff
*resp_skb
;
1216 struct sadb_x_sa2
*sa2
;
1217 struct sadb_address
*saddr
, *daddr
;
1218 struct sadb_msg
*out_hdr
;
1219 struct xfrm_state
*x
= NULL
;
1223 unsigned short family
;
1224 xfrm_address_t
*xsaddr
= NULL
, *xdaddr
= NULL
;
1226 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1227 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1230 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1234 if ((sa2
= ext_hdrs
[SADB_X_EXT_SA2
-1]) != NULL
) {
1235 mode
= sa2
->sadb_x_sa2_mode
- 1;
1236 reqid
= sa2
->sadb_x_sa2_reqid
;
1242 saddr
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1];
1243 daddr
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
1245 family
= ((struct sockaddr
*)(saddr
+ 1))->sa_family
;
1248 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(daddr
+ 1))->sin_addr
.s_addr
;
1249 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(saddr
+ 1))->sin_addr
.s_addr
;
1251 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1253 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(daddr
+ 1))->sin6_addr
;
1254 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(saddr
+ 1))->sin6_addr
;
1259 if (hdr
->sadb_msg_seq
) {
1260 x
= xfrm_find_acq_byseq(hdr
->sadb_msg_seq
);
1261 if (x
&& xfrm_addr_cmp(&x
->id
.daddr
, xdaddr
, family
)) {
1268 x
= xfrm_find_acq(mode
, reqid
, proto
, xdaddr
, xsaddr
, 1, family
);
1273 resp_skb
= ERR_PTR(-ENOENT
);
1275 spin_lock_bh(&x
->lock
);
1276 if (x
->km
.state
!= XFRM_STATE_DEAD
) {
1277 struct sadb_spirange
*range
= ext_hdrs
[SADB_EXT_SPIRANGE
-1];
1278 u32 min_spi
, max_spi
;
1280 if (range
!= NULL
) {
1281 min_spi
= range
->sadb_spirange_min
;
1282 max_spi
= range
->sadb_spirange_max
;
1285 max_spi
= 0x0fffffff;
1287 xfrm_alloc_spi(x
, htonl(min_spi
), htonl(max_spi
));
1289 resp_skb
= pfkey_xfrm_state2msg(x
, 0, 3);
1291 spin_unlock_bh(&x
->lock
);
1293 if (IS_ERR(resp_skb
)) {
1295 return PTR_ERR(resp_skb
);
1298 out_hdr
= (struct sadb_msg
*) resp_skb
->data
;
1299 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1300 out_hdr
->sadb_msg_type
= SADB_GETSPI
;
1301 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1302 out_hdr
->sadb_msg_errno
= 0;
1303 out_hdr
->sadb_msg_reserved
= 0;
1304 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1305 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1309 pfkey_broadcast(resp_skb
, GFP_KERNEL
, BROADCAST_ONE
, sk
);
1314 static int pfkey_acquire(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1316 struct xfrm_state
*x
;
1318 if (hdr
->sadb_msg_len
!= sizeof(struct sadb_msg
)/8)
1321 if (hdr
->sadb_msg_seq
== 0 || hdr
->sadb_msg_errno
== 0)
1324 x
= xfrm_find_acq_byseq(hdr
->sadb_msg_seq
);
1328 spin_lock_bh(&x
->lock
);
1329 if (x
->km
.state
== XFRM_STATE_ACQ
) {
1330 x
->km
.state
= XFRM_STATE_ERROR
;
1333 spin_unlock_bh(&x
->lock
);
1338 static inline int event2poltype(int event
)
1341 case XFRM_MSG_DELPOLICY
:
1342 return SADB_X_SPDDELETE
;
1343 case XFRM_MSG_NEWPOLICY
:
1344 return SADB_X_SPDADD
;
1345 case XFRM_MSG_UPDPOLICY
:
1346 return SADB_X_SPDUPDATE
;
1347 case XFRM_MSG_POLEXPIRE
:
1348 // return SADB_X_SPDEXPIRE;
1350 printk("pfkey: Unknown policy event %d\n", event
);
1357 static inline int event2keytype(int event
)
1360 case XFRM_MSG_DELSA
:
1362 case XFRM_MSG_NEWSA
:
1364 case XFRM_MSG_UPDSA
:
1366 case XFRM_MSG_EXPIRE
:
1369 printk("pfkey: Unknown SA event %d\n", event
);
1377 static int key_notify_sa(struct xfrm_state
*x
, struct km_event
*c
)
1379 struct sk_buff
*skb
;
1380 struct sadb_msg
*hdr
;
1383 if (c
->event
== XFRM_MSG_DELSA
)
1386 skb
= pfkey_xfrm_state2msg(x
, 0, hsc
);
1389 return PTR_ERR(skb
);
1391 hdr
= (struct sadb_msg
*) skb
->data
;
1392 hdr
->sadb_msg_version
= PF_KEY_V2
;
1393 hdr
->sadb_msg_type
= event2keytype(c
->event
);
1394 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1395 hdr
->sadb_msg_errno
= 0;
1396 hdr
->sadb_msg_reserved
= 0;
1397 hdr
->sadb_msg_seq
= c
->seq
;
1398 hdr
->sadb_msg_pid
= c
->pid
;
1400 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
1405 static int pfkey_add(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1407 struct xfrm_state
*x
;
1413 x
= pfkey_msg2xfrm_state(hdr
, ext_hdrs
);
1418 if (hdr
->sadb_msg_type
== SADB_ADD
)
1419 err
= xfrm_state_add(x
);
1421 err
= xfrm_state_update(x
);
1424 x
->km
.state
= XFRM_STATE_DEAD
;
1425 __xfrm_state_put(x
);
1429 if (hdr
->sadb_msg_type
== SADB_ADD
)
1430 c
.event
= XFRM_MSG_NEWSA
;
1432 c
.event
= XFRM_MSG_UPDSA
;
1433 c
.seq
= hdr
->sadb_msg_seq
;
1434 c
.pid
= hdr
->sadb_msg_pid
;
1435 km_state_notify(x
, &c
);
1441 static int pfkey_delete(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1443 struct xfrm_state
*x
;
1447 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1448 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1449 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1452 x
= pfkey_xfrm_state_lookup(hdr
, ext_hdrs
);
1456 if ((err
= security_xfrm_state_delete(x
)))
1459 if (xfrm_state_kern(x
)) {
1464 err
= xfrm_state_delete(x
);
1468 c
.seq
= hdr
->sadb_msg_seq
;
1469 c
.pid
= hdr
->sadb_msg_pid
;
1470 c
.event
= XFRM_MSG_DELSA
;
1471 km_state_notify(x
, &c
);
1478 static int pfkey_get(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1481 struct sk_buff
*out_skb
;
1482 struct sadb_msg
*out_hdr
;
1483 struct xfrm_state
*x
;
1485 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1486 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1487 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1490 x
= pfkey_xfrm_state_lookup(hdr
, ext_hdrs
);
1494 out_skb
= pfkey_xfrm_state2msg(x
, 1, 3);
1495 proto
= x
->id
.proto
;
1497 if (IS_ERR(out_skb
))
1498 return PTR_ERR(out_skb
);
1500 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1501 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1502 out_hdr
->sadb_msg_type
= SADB_DUMP
;
1503 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1504 out_hdr
->sadb_msg_errno
= 0;
1505 out_hdr
->sadb_msg_reserved
= 0;
1506 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1507 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1508 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
);
1513 static struct sk_buff
*compose_sadb_supported(struct sadb_msg
*orig
,
1516 struct sk_buff
*skb
;
1517 struct sadb_msg
*hdr
;
1518 int len
, auth_len
, enc_len
, i
;
1520 auth_len
= xfrm_count_auth_supported();
1522 auth_len
*= sizeof(struct sadb_alg
);
1523 auth_len
+= sizeof(struct sadb_supported
);
1526 enc_len
= xfrm_count_enc_supported();
1528 enc_len
*= sizeof(struct sadb_alg
);
1529 enc_len
+= sizeof(struct sadb_supported
);
1532 len
= enc_len
+ auth_len
+ sizeof(struct sadb_msg
);
1534 skb
= alloc_skb(len
+ 16, allocation
);
1538 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(*hdr
));
1539 pfkey_hdr_dup(hdr
, orig
);
1540 hdr
->sadb_msg_errno
= 0;
1541 hdr
->sadb_msg_len
= len
/ sizeof(uint64_t);
1544 struct sadb_supported
*sp
;
1545 struct sadb_alg
*ap
;
1547 sp
= (struct sadb_supported
*) skb_put(skb
, auth_len
);
1548 ap
= (struct sadb_alg
*) (sp
+ 1);
1550 sp
->sadb_supported_len
= auth_len
/ sizeof(uint64_t);
1551 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_AUTH
;
1553 for (i
= 0; ; i
++) {
1554 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
1557 if (aalg
->available
)
1563 struct sadb_supported
*sp
;
1564 struct sadb_alg
*ap
;
1566 sp
= (struct sadb_supported
*) skb_put(skb
, enc_len
);
1567 ap
= (struct sadb_alg
*) (sp
+ 1);
1569 sp
->sadb_supported_len
= enc_len
/ sizeof(uint64_t);
1570 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_ENCRYPT
;
1572 for (i
= 0; ; i
++) {
1573 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
1576 if (ealg
->available
)
1585 static int pfkey_register(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1587 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1588 struct sk_buff
*supp_skb
;
1590 if (hdr
->sadb_msg_satype
> SADB_SATYPE_MAX
)
1593 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
) {
1594 if (pfk
->registered
&(1<<hdr
->sadb_msg_satype
))
1596 pfk
->registered
|= (1<<hdr
->sadb_msg_satype
);
1601 supp_skb
= compose_sadb_supported(hdr
, GFP_KERNEL
);
1603 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
)
1604 pfk
->registered
&= ~(1<<hdr
->sadb_msg_satype
);
1609 pfkey_broadcast(supp_skb
, GFP_KERNEL
, BROADCAST_REGISTERED
, sk
);
1614 static int key_notify_sa_flush(struct km_event
*c
)
1616 struct sk_buff
*skb
;
1617 struct sadb_msg
*hdr
;
1619 skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
1622 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
1623 hdr
->sadb_msg_satype
= pfkey_proto2satype(c
->data
.proto
);
1624 hdr
->sadb_msg_type
= SADB_FLUSH
;
1625 hdr
->sadb_msg_seq
= c
->seq
;
1626 hdr
->sadb_msg_pid
= c
->pid
;
1627 hdr
->sadb_msg_version
= PF_KEY_V2
;
1628 hdr
->sadb_msg_errno
= (uint8_t) 0;
1629 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
1631 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
1636 static int pfkey_flush(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1641 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1645 xfrm_state_flush(proto
);
1646 c
.data
.proto
= proto
;
1647 c
.seq
= hdr
->sadb_msg_seq
;
1648 c
.pid
= hdr
->sadb_msg_pid
;
1649 c
.event
= XFRM_MSG_FLUSHSA
;
1650 km_state_notify(NULL
, &c
);
1655 struct pfkey_dump_data
1657 struct sk_buff
*skb
;
1658 struct sadb_msg
*hdr
;
1662 static int dump_sa(struct xfrm_state
*x
, int count
, void *ptr
)
1664 struct pfkey_dump_data
*data
= ptr
;
1665 struct sk_buff
*out_skb
;
1666 struct sadb_msg
*out_hdr
;
1668 out_skb
= pfkey_xfrm_state2msg(x
, 1, 3);
1669 if (IS_ERR(out_skb
))
1670 return PTR_ERR(out_skb
);
1672 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1673 out_hdr
->sadb_msg_version
= data
->hdr
->sadb_msg_version
;
1674 out_hdr
->sadb_msg_type
= SADB_DUMP
;
1675 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1676 out_hdr
->sadb_msg_errno
= 0;
1677 out_hdr
->sadb_msg_reserved
= 0;
1678 out_hdr
->sadb_msg_seq
= count
;
1679 out_hdr
->sadb_msg_pid
= data
->hdr
->sadb_msg_pid
;
1680 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, data
->sk
);
1684 static int pfkey_dump(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1687 struct pfkey_dump_data data
= { .skb
= skb
, .hdr
= hdr
, .sk
= sk
};
1689 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1693 return xfrm_state_walk(proto
, dump_sa
, &data
);
1696 static int pfkey_promisc(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1698 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1699 int satype
= hdr
->sadb_msg_satype
;
1701 if (hdr
->sadb_msg_len
== (sizeof(*hdr
) / sizeof(uint64_t))) {
1702 /* XXX we mangle packet... */
1703 hdr
->sadb_msg_errno
= 0;
1704 if (satype
!= 0 && satype
!= 1)
1706 pfk
->promisc
= satype
;
1708 pfkey_broadcast(skb_clone(skb
, GFP_KERNEL
), GFP_KERNEL
, BROADCAST_ALL
, NULL
);
1712 static int check_reqid(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
1715 u32 reqid
= *(u32
*)ptr
;
1717 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1718 if (xp
->xfrm_vec
[i
].reqid
== reqid
)
1724 static u32
gen_reqid(void)
1727 static u32 reqid
= IPSEC_MANUAL_REQID_MAX
;
1733 reqid
= IPSEC_MANUAL_REQID_MAX
+1;
1734 if (xfrm_policy_walk(XFRM_POLICY_TYPE_MAIN
, check_reqid
,
1735 (void*)&reqid
) != -EEXIST
)
1737 } while (reqid
!= start
);
1742 parse_ipsecrequest(struct xfrm_policy
*xp
, struct sadb_x_ipsecrequest
*rq
)
1744 struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ xp
->xfrm_nr
;
1745 struct sockaddr_in
*sin
;
1746 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1747 struct sockaddr_in6
*sin6
;
1750 if (xp
->xfrm_nr
>= XFRM_MAX_DEPTH
)
1753 if (rq
->sadb_x_ipsecrequest_mode
== 0)
1756 t
->id
.proto
= rq
->sadb_x_ipsecrequest_proto
; /* XXX check proto */
1757 t
->mode
= rq
->sadb_x_ipsecrequest_mode
-1;
1758 if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_USE
)
1760 else if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_UNIQUE
) {
1761 t
->reqid
= rq
->sadb_x_ipsecrequest_reqid
;
1762 if (t
->reqid
> IPSEC_MANUAL_REQID_MAX
)
1764 if (!t
->reqid
&& !(t
->reqid
= gen_reqid()))
1768 /* addresses present only in tunnel mode */
1769 if (t
->mode
== XFRM_MODE_TUNNEL
) {
1770 struct sockaddr
*sa
;
1771 sa
= (struct sockaddr
*)(rq
+1);
1772 switch(sa
->sa_family
) {
1774 sin
= (struct sockaddr_in
*)sa
;
1775 t
->saddr
.a4
= sin
->sin_addr
.s_addr
;
1777 if (sin
->sin_family
!= AF_INET
)
1779 t
->id
.daddr
.a4
= sin
->sin_addr
.s_addr
;
1781 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1783 sin6
= (struct sockaddr_in6
*)sa
;
1784 memcpy(t
->saddr
.a6
, &sin6
->sin6_addr
, sizeof(struct in6_addr
));
1786 if (sin6
->sin6_family
!= AF_INET6
)
1788 memcpy(t
->id
.daddr
.a6
, &sin6
->sin6_addr
, sizeof(struct in6_addr
));
1794 t
->encap_family
= sa
->sa_family
;
1796 t
->encap_family
= xp
->family
;
1798 /* No way to set this via kame pfkey */
1799 t
->aalgos
= t
->ealgos
= t
->calgos
= ~0;
1805 parse_ipsecrequests(struct xfrm_policy
*xp
, struct sadb_x_policy
*pol
)
1808 int len
= pol
->sadb_x_policy_len
*8 - sizeof(struct sadb_x_policy
);
1809 struct sadb_x_ipsecrequest
*rq
= (void*)(pol
+1);
1811 while (len
>= sizeof(struct sadb_x_ipsecrequest
)) {
1812 if ((err
= parse_ipsecrequest(xp
, rq
)) < 0)
1814 len
-= rq
->sadb_x_ipsecrequest_len
;
1815 rq
= (void*)((u8
*)rq
+ rq
->sadb_x_ipsecrequest_len
);
1820 static inline int pfkey_xfrm_policy2sec_ctx_size(struct xfrm_policy
*xp
)
1822 struct xfrm_sec_ctx
*xfrm_ctx
= xp
->security
;
1825 int len
= sizeof(struct sadb_x_sec_ctx
);
1826 len
+= xfrm_ctx
->ctx_len
;
1827 return PFKEY_ALIGN8(len
);
1832 static int pfkey_xfrm_policy2msg_size(struct xfrm_policy
*xp
)
1834 struct xfrm_tmpl
*t
;
1835 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
1839 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1840 t
= xp
->xfrm_vec
+ i
;
1841 socklen
+= (t
->encap_family
== AF_INET
?
1842 sizeof(struct sockaddr_in
) :
1843 sizeof(struct sockaddr_in6
));
1846 return sizeof(struct sadb_msg
) +
1847 (sizeof(struct sadb_lifetime
) * 3) +
1848 (sizeof(struct sadb_address
) * 2) +
1849 (sockaddr_size
* 2) +
1850 sizeof(struct sadb_x_policy
) +
1851 (xp
->xfrm_nr
* sizeof(struct sadb_x_ipsecrequest
)) +
1853 pfkey_xfrm_policy2sec_ctx_size(xp
);
1856 static struct sk_buff
* pfkey_xfrm_policy2msg_prep(struct xfrm_policy
*xp
)
1858 struct sk_buff
*skb
;
1861 size
= pfkey_xfrm_policy2msg_size(xp
);
1863 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
1865 return ERR_PTR(-ENOBUFS
);
1870 static void pfkey_xfrm_policy2msg(struct sk_buff
*skb
, struct xfrm_policy
*xp
, int dir
)
1872 struct sadb_msg
*hdr
;
1873 struct sadb_address
*addr
;
1874 struct sadb_lifetime
*lifetime
;
1875 struct sadb_x_policy
*pol
;
1876 struct sockaddr_in
*sin
;
1877 struct sadb_x_sec_ctx
*sec_ctx
;
1878 struct xfrm_sec_ctx
*xfrm_ctx
;
1879 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1880 struct sockaddr_in6
*sin6
;
1884 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
1885 int socklen
= (xp
->family
== AF_INET
?
1886 sizeof(struct sockaddr_in
) :
1887 sizeof(struct sockaddr_in6
));
1889 size
= pfkey_xfrm_policy2msg_size(xp
);
1891 /* call should fill header later */
1892 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
1893 memset(hdr
, 0, size
); /* XXX do we need this ? */
1896 addr
= (struct sadb_address
*) skb_put(skb
,
1897 sizeof(struct sadb_address
)+sockaddr_size
);
1898 addr
->sadb_address_len
=
1899 (sizeof(struct sadb_address
)+sockaddr_size
)/
1901 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
1902 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
1903 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_s
;
1904 addr
->sadb_address_reserved
= 0;
1906 if (xp
->family
== AF_INET
) {
1907 sin
= (struct sockaddr_in
*) (addr
+ 1);
1908 sin
->sin_family
= AF_INET
;
1909 sin
->sin_addr
.s_addr
= xp
->selector
.saddr
.a4
;
1910 sin
->sin_port
= xp
->selector
.sport
;
1911 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
1913 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1914 else if (xp
->family
== AF_INET6
) {
1915 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
1916 sin6
->sin6_family
= AF_INET6
;
1917 sin6
->sin6_port
= xp
->selector
.sport
;
1918 sin6
->sin6_flowinfo
= 0;
1919 memcpy(&sin6
->sin6_addr
, xp
->selector
.saddr
.a6
,
1920 sizeof(struct in6_addr
));
1921 sin6
->sin6_scope_id
= 0;
1928 addr
= (struct sadb_address
*) skb_put(skb
,
1929 sizeof(struct sadb_address
)+sockaddr_size
);
1930 addr
->sadb_address_len
=
1931 (sizeof(struct sadb_address
)+sockaddr_size
)/
1933 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
1934 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
1935 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_d
;
1936 addr
->sadb_address_reserved
= 0;
1937 if (xp
->family
== AF_INET
) {
1938 sin
= (struct sockaddr_in
*) (addr
+ 1);
1939 sin
->sin_family
= AF_INET
;
1940 sin
->sin_addr
.s_addr
= xp
->selector
.daddr
.a4
;
1941 sin
->sin_port
= xp
->selector
.dport
;
1942 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
1944 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1945 else if (xp
->family
== AF_INET6
) {
1946 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
1947 sin6
->sin6_family
= AF_INET6
;
1948 sin6
->sin6_port
= xp
->selector
.dport
;
1949 sin6
->sin6_flowinfo
= 0;
1950 memcpy(&sin6
->sin6_addr
, xp
->selector
.daddr
.a6
,
1951 sizeof(struct in6_addr
));
1952 sin6
->sin6_scope_id
= 0;
1959 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
1960 sizeof(struct sadb_lifetime
));
1961 lifetime
->sadb_lifetime_len
=
1962 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
1963 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
1964 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.hard_packet_limit
);
1965 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.hard_byte_limit
);
1966 lifetime
->sadb_lifetime_addtime
= xp
->lft
.hard_add_expires_seconds
;
1967 lifetime
->sadb_lifetime_usetime
= xp
->lft
.hard_use_expires_seconds
;
1969 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
1970 sizeof(struct sadb_lifetime
));
1971 lifetime
->sadb_lifetime_len
=
1972 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
1973 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
1974 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.soft_packet_limit
);
1975 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.soft_byte_limit
);
1976 lifetime
->sadb_lifetime_addtime
= xp
->lft
.soft_add_expires_seconds
;
1977 lifetime
->sadb_lifetime_usetime
= xp
->lft
.soft_use_expires_seconds
;
1979 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
1980 sizeof(struct sadb_lifetime
));
1981 lifetime
->sadb_lifetime_len
=
1982 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
1983 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
1984 lifetime
->sadb_lifetime_allocations
= xp
->curlft
.packets
;
1985 lifetime
->sadb_lifetime_bytes
= xp
->curlft
.bytes
;
1986 lifetime
->sadb_lifetime_addtime
= xp
->curlft
.add_time
;
1987 lifetime
->sadb_lifetime_usetime
= xp
->curlft
.use_time
;
1989 pol
= (struct sadb_x_policy
*) skb_put(skb
, sizeof(struct sadb_x_policy
));
1990 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
1991 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
1992 pol
->sadb_x_policy_type
= IPSEC_POLICY_DISCARD
;
1993 if (xp
->action
== XFRM_POLICY_ALLOW
) {
1995 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
1997 pol
->sadb_x_policy_type
= IPSEC_POLICY_NONE
;
1999 pol
->sadb_x_policy_dir
= dir
+1;
2000 pol
->sadb_x_policy_id
= xp
->index
;
2001 pol
->sadb_x_policy_priority
= xp
->priority
;
2003 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
2004 struct sadb_x_ipsecrequest
*rq
;
2005 struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ i
;
2008 req_size
= sizeof(struct sadb_x_ipsecrequest
);
2009 if (t
->mode
== XFRM_MODE_TUNNEL
)
2010 req_size
+= ((t
->encap_family
== AF_INET
?
2011 sizeof(struct sockaddr_in
) :
2012 sizeof(struct sockaddr_in6
)) * 2);
2015 rq
= (void*)skb_put(skb
, req_size
);
2016 pol
->sadb_x_policy_len
+= req_size
/8;
2017 memset(rq
, 0, sizeof(*rq
));
2018 rq
->sadb_x_ipsecrequest_len
= req_size
;
2019 rq
->sadb_x_ipsecrequest_proto
= t
->id
.proto
;
2020 rq
->sadb_x_ipsecrequest_mode
= t
->mode
+1;
2021 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_REQUIRE
;
2023 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_UNIQUE
;
2025 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_USE
;
2026 rq
->sadb_x_ipsecrequest_reqid
= t
->reqid
;
2027 if (t
->mode
== XFRM_MODE_TUNNEL
) {
2028 switch (t
->encap_family
) {
2030 sin
= (void*)(rq
+1);
2031 sin
->sin_family
= AF_INET
;
2032 sin
->sin_addr
.s_addr
= t
->saddr
.a4
;
2034 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
2036 sin
->sin_family
= AF_INET
;
2037 sin
->sin_addr
.s_addr
= t
->id
.daddr
.a4
;
2039 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
2041 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2043 sin6
= (void*)(rq
+1);
2044 sin6
->sin6_family
= AF_INET6
;
2045 sin6
->sin6_port
= 0;
2046 sin6
->sin6_flowinfo
= 0;
2047 memcpy(&sin6
->sin6_addr
, t
->saddr
.a6
,
2048 sizeof(struct in6_addr
));
2049 sin6
->sin6_scope_id
= 0;
2052 sin6
->sin6_family
= AF_INET6
;
2053 sin6
->sin6_port
= 0;
2054 sin6
->sin6_flowinfo
= 0;
2055 memcpy(&sin6
->sin6_addr
, t
->id
.daddr
.a6
,
2056 sizeof(struct in6_addr
));
2057 sin6
->sin6_scope_id
= 0;
2066 /* security context */
2067 if ((xfrm_ctx
= xp
->security
)) {
2068 int ctx_size
= pfkey_xfrm_policy2sec_ctx_size(xp
);
2070 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
, ctx_size
);
2071 sec_ctx
->sadb_x_sec_len
= ctx_size
/ sizeof(uint64_t);
2072 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
2073 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
2074 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
2075 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
2076 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
2080 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
2081 hdr
->sadb_msg_reserved
= atomic_read(&xp
->refcnt
);
2084 static int key_notify_policy(struct xfrm_policy
*xp
, int dir
, struct km_event
*c
)
2086 struct sk_buff
*out_skb
;
2087 struct sadb_msg
*out_hdr
;
2090 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2091 if (IS_ERR(out_skb
)) {
2092 err
= PTR_ERR(out_skb
);
2095 pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2097 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2098 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
2100 if (c
->data
.byid
&& c
->event
== XFRM_MSG_DELPOLICY
)
2101 out_hdr
->sadb_msg_type
= SADB_X_SPDDELETE2
;
2103 out_hdr
->sadb_msg_type
= event2poltype(c
->event
);
2104 out_hdr
->sadb_msg_errno
= 0;
2105 out_hdr
->sadb_msg_seq
= c
->seq
;
2106 out_hdr
->sadb_msg_pid
= c
->pid
;
2107 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
2113 static int pfkey_spdadd(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2116 struct sadb_lifetime
*lifetime
;
2117 struct sadb_address
*sa
;
2118 struct sadb_x_policy
*pol
;
2119 struct xfrm_policy
*xp
;
2121 struct sadb_x_sec_ctx
*sec_ctx
;
2123 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2124 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2125 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2128 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2129 if (pol
->sadb_x_policy_type
> IPSEC_POLICY_IPSEC
)
2131 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2134 xp
= xfrm_policy_alloc(GFP_KERNEL
);
2138 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
2139 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
2140 xp
->priority
= pol
->sadb_x_policy_priority
;
2142 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2143 xp
->family
= pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.saddr
);
2148 xp
->selector
.family
= xp
->family
;
2149 xp
->selector
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2150 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2151 xp
->selector
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2152 if (xp
->selector
.sport
)
2153 xp
->selector
.sport_mask
= htons(0xffff);
2155 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
2156 pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.daddr
);
2157 xp
->selector
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2159 /* Amusing, we set this twice. KAME apps appear to set same value
2160 * in both addresses.
2162 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2164 xp
->selector
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2165 if (xp
->selector
.dport
)
2166 xp
->selector
.dport_mask
= htons(0xffff);
2168 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
2169 if (sec_ctx
!= NULL
) {
2170 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2177 err
= security_xfrm_policy_alloc(xp
, uctx
);
2184 xp
->lft
.soft_byte_limit
= XFRM_INF
;
2185 xp
->lft
.hard_byte_limit
= XFRM_INF
;
2186 xp
->lft
.soft_packet_limit
= XFRM_INF
;
2187 xp
->lft
.hard_packet_limit
= XFRM_INF
;
2188 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1]) != NULL
) {
2189 xp
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2190 xp
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2191 xp
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2192 xp
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2194 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1]) != NULL
) {
2195 xp
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2196 xp
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2197 xp
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2198 xp
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2201 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
2202 (err
= parse_ipsecrequests(xp
, pol
)) < 0)
2205 err
= xfrm_policy_insert(pol
->sadb_x_policy_dir
-1, xp
,
2206 hdr
->sadb_msg_type
!= SADB_X_SPDUPDATE
);
2211 if (hdr
->sadb_msg_type
== SADB_X_SPDUPDATE
)
2212 c
.event
= XFRM_MSG_UPDPOLICY
;
2214 c
.event
= XFRM_MSG_NEWPOLICY
;
2216 c
.seq
= hdr
->sadb_msg_seq
;
2217 c
.pid
= hdr
->sadb_msg_pid
;
2219 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2224 security_xfrm_policy_free(xp
);
2229 static int pfkey_spddelete(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2232 struct sadb_address
*sa
;
2233 struct sadb_x_policy
*pol
;
2234 struct xfrm_policy
*xp
, tmp
;
2235 struct xfrm_selector sel
;
2237 struct sadb_x_sec_ctx
*sec_ctx
;
2239 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2240 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2241 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2244 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2245 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2248 memset(&sel
, 0, sizeof(sel
));
2250 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2251 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2252 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2253 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2254 sel
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2256 sel
.sport_mask
= htons(0xffff);
2258 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
2259 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2260 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2261 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2262 sel
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2264 sel
.dport_mask
= htons(0xffff);
2266 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
2267 memset(&tmp
, 0, sizeof(struct xfrm_policy
));
2269 if (sec_ctx
!= NULL
) {
2270 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2275 err
= security_xfrm_policy_alloc(&tmp
, uctx
);
2282 xp
= xfrm_policy_bysel_ctx(XFRM_POLICY_TYPE_MAIN
, pol
->sadb_x_policy_dir
-1,
2283 &sel
, tmp
.security
, 1);
2284 security_xfrm_policy_free(&tmp
);
2290 if ((err
= security_xfrm_policy_delete(xp
)))
2292 c
.seq
= hdr
->sadb_msg_seq
;
2293 c
.pid
= hdr
->sadb_msg_pid
;
2294 c
.event
= XFRM_MSG_DELPOLICY
;
2295 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2302 static int key_pol_get_resp(struct sock
*sk
, struct xfrm_policy
*xp
, struct sadb_msg
*hdr
, int dir
)
2305 struct sk_buff
*out_skb
;
2306 struct sadb_msg
*out_hdr
;
2309 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2310 if (IS_ERR(out_skb
)) {
2311 err
= PTR_ERR(out_skb
);
2314 pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2316 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2317 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
2318 out_hdr
->sadb_msg_type
= hdr
->sadb_msg_type
;
2319 out_hdr
->sadb_msg_satype
= 0;
2320 out_hdr
->sadb_msg_errno
= 0;
2321 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
2322 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
2323 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
);
2330 static int pfkey_spdget(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2334 struct sadb_x_policy
*pol
;
2335 struct xfrm_policy
*xp
;
2338 if ((pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1]) == NULL
)
2341 dir
= xfrm_policy_id2dir(pol
->sadb_x_policy_id
);
2342 if (dir
>= XFRM_POLICY_MAX
)
2345 xp
= xfrm_policy_byid(XFRM_POLICY_TYPE_MAIN
, dir
, pol
->sadb_x_policy_id
,
2346 hdr
->sadb_msg_type
== SADB_X_SPDDELETE2
);
2352 c
.seq
= hdr
->sadb_msg_seq
;
2353 c
.pid
= hdr
->sadb_msg_pid
;
2354 if (hdr
->sadb_msg_type
== SADB_X_SPDDELETE2
) {
2356 c
.event
= XFRM_MSG_DELPOLICY
;
2357 km_policy_notify(xp
, dir
, &c
);
2359 err
= key_pol_get_resp(sk
, xp
, hdr
, dir
);
2366 static int dump_sp(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
2368 struct pfkey_dump_data
*data
= ptr
;
2369 struct sk_buff
*out_skb
;
2370 struct sadb_msg
*out_hdr
;
2372 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2373 if (IS_ERR(out_skb
))
2374 return PTR_ERR(out_skb
);
2376 pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2378 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2379 out_hdr
->sadb_msg_version
= data
->hdr
->sadb_msg_version
;
2380 out_hdr
->sadb_msg_type
= SADB_X_SPDDUMP
;
2381 out_hdr
->sadb_msg_satype
= SADB_SATYPE_UNSPEC
;
2382 out_hdr
->sadb_msg_errno
= 0;
2383 out_hdr
->sadb_msg_seq
= count
;
2384 out_hdr
->sadb_msg_pid
= data
->hdr
->sadb_msg_pid
;
2385 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, data
->sk
);
2389 static int pfkey_spddump(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2391 struct pfkey_dump_data data
= { .skb
= skb
, .hdr
= hdr
, .sk
= sk
};
2393 return xfrm_policy_walk(XFRM_POLICY_TYPE_MAIN
, dump_sp
, &data
);
2396 static int key_notify_policy_flush(struct km_event
*c
)
2398 struct sk_buff
*skb_out
;
2399 struct sadb_msg
*hdr
;
2401 skb_out
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
2404 hdr
= (struct sadb_msg
*) skb_put(skb_out
, sizeof(struct sadb_msg
));
2405 hdr
->sadb_msg_type
= SADB_X_SPDFLUSH
;
2406 hdr
->sadb_msg_seq
= c
->seq
;
2407 hdr
->sadb_msg_pid
= c
->pid
;
2408 hdr
->sadb_msg_version
= PF_KEY_V2
;
2409 hdr
->sadb_msg_errno
= (uint8_t) 0;
2410 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
2411 pfkey_broadcast(skb_out
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
2416 static int pfkey_spdflush(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2420 xfrm_policy_flush(XFRM_POLICY_TYPE_MAIN
);
2421 c
.data
.type
= XFRM_POLICY_TYPE_MAIN
;
2422 c
.event
= XFRM_MSG_FLUSHPOLICY
;
2423 c
.pid
= hdr
->sadb_msg_pid
;
2424 c
.seq
= hdr
->sadb_msg_seq
;
2425 km_policy_notify(NULL
, 0, &c
);
2430 typedef int (*pfkey_handler
)(struct sock
*sk
, struct sk_buff
*skb
,
2431 struct sadb_msg
*hdr
, void **ext_hdrs
);
2432 static pfkey_handler pfkey_funcs
[SADB_MAX
+ 1] = {
2433 [SADB_RESERVED
] = pfkey_reserved
,
2434 [SADB_GETSPI
] = pfkey_getspi
,
2435 [SADB_UPDATE
] = pfkey_add
,
2436 [SADB_ADD
] = pfkey_add
,
2437 [SADB_DELETE
] = pfkey_delete
,
2438 [SADB_GET
] = pfkey_get
,
2439 [SADB_ACQUIRE
] = pfkey_acquire
,
2440 [SADB_REGISTER
] = pfkey_register
,
2441 [SADB_EXPIRE
] = NULL
,
2442 [SADB_FLUSH
] = pfkey_flush
,
2443 [SADB_DUMP
] = pfkey_dump
,
2444 [SADB_X_PROMISC
] = pfkey_promisc
,
2445 [SADB_X_PCHANGE
] = NULL
,
2446 [SADB_X_SPDUPDATE
] = pfkey_spdadd
,
2447 [SADB_X_SPDADD
] = pfkey_spdadd
,
2448 [SADB_X_SPDDELETE
] = pfkey_spddelete
,
2449 [SADB_X_SPDGET
] = pfkey_spdget
,
2450 [SADB_X_SPDACQUIRE
] = NULL
,
2451 [SADB_X_SPDDUMP
] = pfkey_spddump
,
2452 [SADB_X_SPDFLUSH
] = pfkey_spdflush
,
2453 [SADB_X_SPDSETIDX
] = pfkey_spdadd
,
2454 [SADB_X_SPDDELETE2
] = pfkey_spdget
,
2457 static int pfkey_process(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
)
2459 void *ext_hdrs
[SADB_EXT_MAX
];
2462 pfkey_broadcast(skb_clone(skb
, GFP_KERNEL
), GFP_KERNEL
,
2463 BROADCAST_PROMISC_ONLY
, NULL
);
2465 memset(ext_hdrs
, 0, sizeof(ext_hdrs
));
2466 err
= parse_exthdrs(skb
, hdr
, ext_hdrs
);
2469 if (pfkey_funcs
[hdr
->sadb_msg_type
])
2470 err
= pfkey_funcs
[hdr
->sadb_msg_type
](sk
, skb
, hdr
, ext_hdrs
);
2475 static struct sadb_msg
*pfkey_get_base_msg(struct sk_buff
*skb
, int *errp
)
2477 struct sadb_msg
*hdr
= NULL
;
2479 if (skb
->len
< sizeof(*hdr
)) {
2482 hdr
= (struct sadb_msg
*) skb
->data
;
2483 if (hdr
->sadb_msg_version
!= PF_KEY_V2
||
2484 hdr
->sadb_msg_reserved
!= 0 ||
2485 (hdr
->sadb_msg_type
<= SADB_RESERVED
||
2486 hdr
->sadb_msg_type
> SADB_MAX
)) {
2489 } else if (hdr
->sadb_msg_len
!= (skb
->len
/
2490 sizeof(uint64_t)) ||
2491 hdr
->sadb_msg_len
< (sizeof(struct sadb_msg
) /
2492 sizeof(uint64_t))) {
2502 static inline int aalg_tmpl_set(struct xfrm_tmpl
*t
, struct xfrm_algo_desc
*d
)
2504 return t
->aalgos
& (1 << d
->desc
.sadb_alg_id
);
2507 static inline int ealg_tmpl_set(struct xfrm_tmpl
*t
, struct xfrm_algo_desc
*d
)
2509 return t
->ealgos
& (1 << d
->desc
.sadb_alg_id
);
2512 static int count_ah_combs(struct xfrm_tmpl
*t
)
2516 for (i
= 0; ; i
++) {
2517 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2520 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2521 sz
+= sizeof(struct sadb_comb
);
2523 return sz
+ sizeof(struct sadb_prop
);
2526 static int count_esp_combs(struct xfrm_tmpl
*t
)
2530 for (i
= 0; ; i
++) {
2531 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2535 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2538 for (k
= 1; ; k
++) {
2539 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2543 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2544 sz
+= sizeof(struct sadb_comb
);
2547 return sz
+ sizeof(struct sadb_prop
);
2550 static void dump_ah_combs(struct sk_buff
*skb
, struct xfrm_tmpl
*t
)
2552 struct sadb_prop
*p
;
2555 p
= (struct sadb_prop
*)skb_put(skb
, sizeof(struct sadb_prop
));
2556 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2557 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2558 p
->sadb_prop_replay
= 32;
2559 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2561 for (i
= 0; ; i
++) {
2562 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2566 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
) {
2567 struct sadb_comb
*c
;
2568 c
= (struct sadb_comb
*)skb_put(skb
, sizeof(struct sadb_comb
));
2569 memset(c
, 0, sizeof(*c
));
2570 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2571 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2572 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2573 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2574 c
->sadb_comb_hard_addtime
= 24*60*60;
2575 c
->sadb_comb_soft_addtime
= 20*60*60;
2576 c
->sadb_comb_hard_usetime
= 8*60*60;
2577 c
->sadb_comb_soft_usetime
= 7*60*60;
2582 static void dump_esp_combs(struct sk_buff
*skb
, struct xfrm_tmpl
*t
)
2584 struct sadb_prop
*p
;
2587 p
= (struct sadb_prop
*)skb_put(skb
, sizeof(struct sadb_prop
));
2588 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2589 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2590 p
->sadb_prop_replay
= 32;
2591 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2594 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2598 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2601 for (k
= 1; ; k
++) {
2602 struct sadb_comb
*c
;
2603 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2606 if (!(aalg_tmpl_set(t
, aalg
) && aalg
->available
))
2608 c
= (struct sadb_comb
*)skb_put(skb
, sizeof(struct sadb_comb
));
2609 memset(c
, 0, sizeof(*c
));
2610 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2611 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2612 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2613 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2614 c
->sadb_comb_encrypt
= ealg
->desc
.sadb_alg_id
;
2615 c
->sadb_comb_encrypt_minbits
= ealg
->desc
.sadb_alg_minbits
;
2616 c
->sadb_comb_encrypt_maxbits
= ealg
->desc
.sadb_alg_maxbits
;
2617 c
->sadb_comb_hard_addtime
= 24*60*60;
2618 c
->sadb_comb_soft_addtime
= 20*60*60;
2619 c
->sadb_comb_hard_usetime
= 8*60*60;
2620 c
->sadb_comb_soft_usetime
= 7*60*60;
2625 static int key_notify_policy_expire(struct xfrm_policy
*xp
, struct km_event
*c
)
2630 static int key_notify_sa_expire(struct xfrm_state
*x
, struct km_event
*c
)
2632 struct sk_buff
*out_skb
;
2633 struct sadb_msg
*out_hdr
;
2637 hard
= c
->data
.hard
;
2643 out_skb
= pfkey_xfrm_state2msg(x
, 0, hsc
);
2644 if (IS_ERR(out_skb
))
2645 return PTR_ERR(out_skb
);
2647 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2648 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
2649 out_hdr
->sadb_msg_type
= SADB_EXPIRE
;
2650 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
2651 out_hdr
->sadb_msg_errno
= 0;
2652 out_hdr
->sadb_msg_reserved
= 0;
2653 out_hdr
->sadb_msg_seq
= 0;
2654 out_hdr
->sadb_msg_pid
= 0;
2656 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
2660 static int pfkey_send_notify(struct xfrm_state
*x
, struct km_event
*c
)
2663 case XFRM_MSG_EXPIRE
:
2664 return key_notify_sa_expire(x
, c
);
2665 case XFRM_MSG_DELSA
:
2666 case XFRM_MSG_NEWSA
:
2667 case XFRM_MSG_UPDSA
:
2668 return key_notify_sa(x
, c
);
2669 case XFRM_MSG_FLUSHSA
:
2670 return key_notify_sa_flush(c
);
2671 case XFRM_MSG_NEWAE
: /* not yet supported */
2674 printk("pfkey: Unknown SA event %d\n", c
->event
);
2681 static int pfkey_send_policy_notify(struct xfrm_policy
*xp
, int dir
, struct km_event
*c
)
2683 if (xp
&& xp
->type
!= XFRM_POLICY_TYPE_MAIN
)
2687 case XFRM_MSG_POLEXPIRE
:
2688 return key_notify_policy_expire(xp
, c
);
2689 case XFRM_MSG_DELPOLICY
:
2690 case XFRM_MSG_NEWPOLICY
:
2691 case XFRM_MSG_UPDPOLICY
:
2692 return key_notify_policy(xp
, dir
, c
);
2693 case XFRM_MSG_FLUSHPOLICY
:
2694 if (c
->data
.type
!= XFRM_POLICY_TYPE_MAIN
)
2696 return key_notify_policy_flush(c
);
2698 printk("pfkey: Unknown policy event %d\n", c
->event
);
2705 static u32
get_acqseq(void)
2709 static DEFINE_SPINLOCK(acqseq_lock
);
2711 spin_lock_bh(&acqseq_lock
);
2712 res
= (++acqseq
? : ++acqseq
);
2713 spin_unlock_bh(&acqseq_lock
);
2717 static int pfkey_send_acquire(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*xp
, int dir
)
2719 struct sk_buff
*skb
;
2720 struct sadb_msg
*hdr
;
2721 struct sadb_address
*addr
;
2722 struct sadb_x_policy
*pol
;
2723 struct sockaddr_in
*sin
;
2724 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2725 struct sockaddr_in6
*sin6
;
2729 struct sadb_x_sec_ctx
*sec_ctx
;
2730 struct xfrm_sec_ctx
*xfrm_ctx
;
2733 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
2737 size
= sizeof(struct sadb_msg
) +
2738 (sizeof(struct sadb_address
) * 2) +
2739 (sockaddr_size
* 2) +
2740 sizeof(struct sadb_x_policy
);
2742 if (x
->id
.proto
== IPPROTO_AH
)
2743 size
+= count_ah_combs(t
);
2744 else if (x
->id
.proto
== IPPROTO_ESP
)
2745 size
+= count_esp_combs(t
);
2747 if ((xfrm_ctx
= x
->security
)) {
2748 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
2749 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
2752 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
2756 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
2757 hdr
->sadb_msg_version
= PF_KEY_V2
;
2758 hdr
->sadb_msg_type
= SADB_ACQUIRE
;
2759 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
2760 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
2761 hdr
->sadb_msg_errno
= 0;
2762 hdr
->sadb_msg_reserved
= 0;
2763 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
2764 hdr
->sadb_msg_pid
= 0;
2767 addr
= (struct sadb_address
*) skb_put(skb
,
2768 sizeof(struct sadb_address
)+sockaddr_size
);
2769 addr
->sadb_address_len
=
2770 (sizeof(struct sadb_address
)+sockaddr_size
)/
2772 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
2773 addr
->sadb_address_proto
= 0;
2774 addr
->sadb_address_reserved
= 0;
2775 if (x
->props
.family
== AF_INET
) {
2776 addr
->sadb_address_prefixlen
= 32;
2778 sin
= (struct sockaddr_in
*) (addr
+ 1);
2779 sin
->sin_family
= AF_INET
;
2780 sin
->sin_addr
.s_addr
= x
->props
.saddr
.a4
;
2782 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
2784 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2785 else if (x
->props
.family
== AF_INET6
) {
2786 addr
->sadb_address_prefixlen
= 128;
2788 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
2789 sin6
->sin6_family
= AF_INET6
;
2790 sin6
->sin6_port
= 0;
2791 sin6
->sin6_flowinfo
= 0;
2792 memcpy(&sin6
->sin6_addr
,
2793 x
->props
.saddr
.a6
, sizeof(struct in6_addr
));
2794 sin6
->sin6_scope_id
= 0;
2801 addr
= (struct sadb_address
*) skb_put(skb
,
2802 sizeof(struct sadb_address
)+sockaddr_size
);
2803 addr
->sadb_address_len
=
2804 (sizeof(struct sadb_address
)+sockaddr_size
)/
2806 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
2807 addr
->sadb_address_proto
= 0;
2808 addr
->sadb_address_reserved
= 0;
2809 if (x
->props
.family
== AF_INET
) {
2810 addr
->sadb_address_prefixlen
= 32;
2812 sin
= (struct sockaddr_in
*) (addr
+ 1);
2813 sin
->sin_family
= AF_INET
;
2814 sin
->sin_addr
.s_addr
= x
->id
.daddr
.a4
;
2816 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
2818 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2819 else if (x
->props
.family
== AF_INET6
) {
2820 addr
->sadb_address_prefixlen
= 128;
2822 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
2823 sin6
->sin6_family
= AF_INET6
;
2824 sin6
->sin6_port
= 0;
2825 sin6
->sin6_flowinfo
= 0;
2826 memcpy(&sin6
->sin6_addr
,
2827 x
->id
.daddr
.a6
, sizeof(struct in6_addr
));
2828 sin6
->sin6_scope_id
= 0;
2834 pol
= (struct sadb_x_policy
*) skb_put(skb
, sizeof(struct sadb_x_policy
));
2835 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
2836 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
2837 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
2838 pol
->sadb_x_policy_dir
= dir
+1;
2839 pol
->sadb_x_policy_id
= xp
->index
;
2841 /* Set sadb_comb's. */
2842 if (x
->id
.proto
== IPPROTO_AH
)
2843 dump_ah_combs(skb
, t
);
2844 else if (x
->id
.proto
== IPPROTO_ESP
)
2845 dump_esp_combs(skb
, t
);
2847 /* security context */
2849 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
,
2850 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
2851 sec_ctx
->sadb_x_sec_len
=
2852 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
2853 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
2854 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
2855 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
2856 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
2857 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
2861 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
2864 static struct xfrm_policy
*pfkey_compile_policy(struct sock
*sk
, int opt
,
2865 u8
*data
, int len
, int *dir
)
2867 struct xfrm_policy
*xp
;
2868 struct sadb_x_policy
*pol
= (struct sadb_x_policy
*)data
;
2869 struct sadb_x_sec_ctx
*sec_ctx
;
2871 switch (sk
->sk_family
) {
2873 if (opt
!= IP_IPSEC_POLICY
) {
2878 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2880 if (opt
!= IPV6_IPSEC_POLICY
) {
2893 if (len
< sizeof(struct sadb_x_policy
) ||
2894 pol
->sadb_x_policy_len
*8 > len
||
2895 pol
->sadb_x_policy_type
> IPSEC_POLICY_BYPASS
||
2896 (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
> IPSEC_DIR_OUTBOUND
))
2899 xp
= xfrm_policy_alloc(GFP_ATOMIC
);
2905 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
2906 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
2908 xp
->lft
.soft_byte_limit
= XFRM_INF
;
2909 xp
->lft
.hard_byte_limit
= XFRM_INF
;
2910 xp
->lft
.soft_packet_limit
= XFRM_INF
;
2911 xp
->lft
.hard_packet_limit
= XFRM_INF
;
2912 xp
->family
= sk
->sk_family
;
2915 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
2916 (*dir
= parse_ipsecrequests(xp
, pol
)) < 0)
2919 /* security context too */
2920 if (len
>= (pol
->sadb_x_policy_len
*8 +
2921 sizeof(struct sadb_x_sec_ctx
))) {
2922 char *p
= (char *)pol
;
2923 struct xfrm_user_sec_ctx
*uctx
;
2925 p
+= pol
->sadb_x_policy_len
*8;
2926 sec_ctx
= (struct sadb_x_sec_ctx
*)p
;
2927 if (len
< pol
->sadb_x_policy_len
*8 +
2928 sec_ctx
->sadb_x_sec_len
) {
2932 if ((*dir
= verify_sec_ctx_len(p
)))
2934 uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2935 *dir
= security_xfrm_policy_alloc(xp
, uctx
);
2942 *dir
= pol
->sadb_x_policy_dir
-1;
2946 security_xfrm_policy_free(xp
);
2951 static int pfkey_send_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
2953 struct sk_buff
*skb
;
2954 struct sadb_msg
*hdr
;
2956 struct sadb_address
*addr
;
2957 struct sadb_x_nat_t_port
*n_port
;
2958 struct sockaddr_in
*sin
;
2959 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2960 struct sockaddr_in6
*sin6
;
2964 __u8 satype
= (x
->id
.proto
== IPPROTO_ESP
? SADB_SATYPE_ESP
: 0);
2965 struct xfrm_encap_tmpl
*natt
= NULL
;
2967 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
2979 /* Build an SADB_X_NAT_T_NEW_MAPPING message:
2981 * HDR | SA | ADDRESS_SRC (old addr) | NAT_T_SPORT (old port) |
2982 * ADDRESS_DST (new addr) | NAT_T_DPORT (new port)
2985 size
= sizeof(struct sadb_msg
) +
2986 sizeof(struct sadb_sa
) +
2987 (sizeof(struct sadb_address
) * 2) +
2988 (sockaddr_size
* 2) +
2989 (sizeof(struct sadb_x_nat_t_port
) * 2);
2991 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
2995 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
2996 hdr
->sadb_msg_version
= PF_KEY_V2
;
2997 hdr
->sadb_msg_type
= SADB_X_NAT_T_NEW_MAPPING
;
2998 hdr
->sadb_msg_satype
= satype
;
2999 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3000 hdr
->sadb_msg_errno
= 0;
3001 hdr
->sadb_msg_reserved
= 0;
3002 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3003 hdr
->sadb_msg_pid
= 0;
3006 sa
= (struct sadb_sa
*) skb_put(skb
, sizeof(struct sadb_sa
));
3007 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
3008 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
3009 sa
->sadb_sa_spi
= x
->id
.spi
;
3010 sa
->sadb_sa_replay
= 0;
3011 sa
->sadb_sa_state
= 0;
3012 sa
->sadb_sa_auth
= 0;
3013 sa
->sadb_sa_encrypt
= 0;
3014 sa
->sadb_sa_flags
= 0;
3016 /* ADDRESS_SRC (old addr) */
3017 addr
= (struct sadb_address
*)
3018 skb_put(skb
, sizeof(struct sadb_address
)+sockaddr_size
);
3019 addr
->sadb_address_len
=
3020 (sizeof(struct sadb_address
)+sockaddr_size
)/
3022 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3023 addr
->sadb_address_proto
= 0;
3024 addr
->sadb_address_reserved
= 0;
3025 if (x
->props
.family
== AF_INET
) {
3026 addr
->sadb_address_prefixlen
= 32;
3028 sin
= (struct sockaddr_in
*) (addr
+ 1);
3029 sin
->sin_family
= AF_INET
;
3030 sin
->sin_addr
.s_addr
= x
->props
.saddr
.a4
;
3032 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3034 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3035 else if (x
->props
.family
== AF_INET6
) {
3036 addr
->sadb_address_prefixlen
= 128;
3038 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
3039 sin6
->sin6_family
= AF_INET6
;
3040 sin6
->sin6_port
= 0;
3041 sin6
->sin6_flowinfo
= 0;
3042 memcpy(&sin6
->sin6_addr
,
3043 x
->props
.saddr
.a6
, sizeof(struct in6_addr
));
3044 sin6
->sin6_scope_id
= 0;
3050 /* NAT_T_SPORT (old port) */
3051 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
3052 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3053 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
3054 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
3055 n_port
->sadb_x_nat_t_port_reserved
= 0;
3057 /* ADDRESS_DST (new addr) */
3058 addr
= (struct sadb_address
*)
3059 skb_put(skb
, sizeof(struct sadb_address
)+sockaddr_size
);
3060 addr
->sadb_address_len
=
3061 (sizeof(struct sadb_address
)+sockaddr_size
)/
3063 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3064 addr
->sadb_address_proto
= 0;
3065 addr
->sadb_address_reserved
= 0;
3066 if (x
->props
.family
== AF_INET
) {
3067 addr
->sadb_address_prefixlen
= 32;
3069 sin
= (struct sockaddr_in
*) (addr
+ 1);
3070 sin
->sin_family
= AF_INET
;
3071 sin
->sin_addr
.s_addr
= ipaddr
->a4
;
3073 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3075 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3076 else if (x
->props
.family
== AF_INET6
) {
3077 addr
->sadb_address_prefixlen
= 128;
3079 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
3080 sin6
->sin6_family
= AF_INET6
;
3081 sin6
->sin6_port
= 0;
3082 sin6
->sin6_flowinfo
= 0;
3083 memcpy(&sin6
->sin6_addr
, &ipaddr
->a6
, sizeof(struct in6_addr
));
3084 sin6
->sin6_scope_id
= 0;
3090 /* NAT_T_DPORT (new port) */
3091 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
3092 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3093 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
3094 n_port
->sadb_x_nat_t_port_port
= sport
;
3095 n_port
->sadb_x_nat_t_port_reserved
= 0;
3097 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
3100 static int pfkey_sendmsg(struct kiocb
*kiocb
,
3101 struct socket
*sock
, struct msghdr
*msg
, size_t len
)
3103 struct sock
*sk
= sock
->sk
;
3104 struct sk_buff
*skb
= NULL
;
3105 struct sadb_msg
*hdr
= NULL
;
3109 if (msg
->msg_flags
& MSG_OOB
)
3113 if ((unsigned)len
> sk
->sk_sndbuf
- 32)
3117 skb
= alloc_skb(len
, GFP_KERNEL
);
3122 if (memcpy_fromiovec(skb_put(skb
,len
), msg
->msg_iov
, len
))
3125 hdr
= pfkey_get_base_msg(skb
, &err
);
3129 mutex_lock(&xfrm_cfg_mutex
);
3130 err
= pfkey_process(sk
, skb
, hdr
);
3131 mutex_unlock(&xfrm_cfg_mutex
);
3134 if (err
&& hdr
&& pfkey_error(hdr
, err
, sk
) == 0)
3142 static int pfkey_recvmsg(struct kiocb
*kiocb
,
3143 struct socket
*sock
, struct msghdr
*msg
, size_t len
,
3146 struct sock
*sk
= sock
->sk
;
3147 struct sk_buff
*skb
;
3151 if (flags
& ~(MSG_PEEK
|MSG_DONTWAIT
|MSG_TRUNC
|MSG_CMSG_COMPAT
))
3154 msg
->msg_namelen
= 0;
3155 skb
= skb_recv_datagram(sk
, flags
, flags
& MSG_DONTWAIT
, &err
);
3161 msg
->msg_flags
|= MSG_TRUNC
;
3165 skb
->h
.raw
= skb
->data
;
3166 err
= skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
3170 sock_recv_timestamp(msg
, sk
, skb
);
3172 err
= (flags
& MSG_TRUNC
) ? skb
->len
: copied
;
3175 skb_free_datagram(sk
, skb
);
3180 static const struct proto_ops pfkey_ops
= {
3182 .owner
= THIS_MODULE
,
3183 /* Operations that make no sense on pfkey sockets. */
3184 .bind
= sock_no_bind
,
3185 .connect
= sock_no_connect
,
3186 .socketpair
= sock_no_socketpair
,
3187 .accept
= sock_no_accept
,
3188 .getname
= sock_no_getname
,
3189 .ioctl
= sock_no_ioctl
,
3190 .listen
= sock_no_listen
,
3191 .shutdown
= sock_no_shutdown
,
3192 .setsockopt
= sock_no_setsockopt
,
3193 .getsockopt
= sock_no_getsockopt
,
3194 .mmap
= sock_no_mmap
,
3195 .sendpage
= sock_no_sendpage
,
3197 /* Now the operations that really occur. */
3198 .release
= pfkey_release
,
3199 .poll
= datagram_poll
,
3200 .sendmsg
= pfkey_sendmsg
,
3201 .recvmsg
= pfkey_recvmsg
,
3204 static struct net_proto_family pfkey_family_ops
= {
3206 .create
= pfkey_create
,
3207 .owner
= THIS_MODULE
,
3210 #ifdef CONFIG_PROC_FS
3211 static int pfkey_read_proc(char *buffer
, char **start
, off_t offset
,
3212 int length
, int *eof
, void *data
)
3218 struct hlist_node
*node
;
3220 len
+= sprintf(buffer
,"sk RefCnt Rmem Wmem User Inode\n");
3222 read_lock(&pfkey_table_lock
);
3224 sk_for_each(s
, node
, &pfkey_table
) {
3225 len
+= sprintf(buffer
+len
,"%p %-6d %-6u %-6u %-6u %-6lu",
3227 atomic_read(&s
->sk_refcnt
),
3228 atomic_read(&s
->sk_rmem_alloc
),
3229 atomic_read(&s
->sk_wmem_alloc
),
3234 buffer
[len
++] = '\n';
3241 if(pos
> offset
+ length
)
3247 read_unlock(&pfkey_table_lock
);
3249 *start
= buffer
+ (offset
- begin
);
3250 len
-= (offset
- begin
);
3261 static struct xfrm_mgr pfkeyv2_mgr
=
3264 .notify
= pfkey_send_notify
,
3265 .acquire
= pfkey_send_acquire
,
3266 .compile_policy
= pfkey_compile_policy
,
3267 .new_mapping
= pfkey_send_new_mapping
,
3268 .notify_policy
= pfkey_send_policy_notify
,
3271 static void __exit
ipsec_pfkey_exit(void)
3273 xfrm_unregister_km(&pfkeyv2_mgr
);
3274 remove_proc_entry("net/pfkey", NULL
);
3275 sock_unregister(PF_KEY
);
3276 proto_unregister(&key_proto
);
3279 static int __init
ipsec_pfkey_init(void)
3281 int err
= proto_register(&key_proto
, 0);
3286 err
= sock_register(&pfkey_family_ops
);
3288 goto out_unregister_key_proto
;
3289 #ifdef CONFIG_PROC_FS
3291 if (create_proc_read_entry("net/pfkey", 0, NULL
, pfkey_read_proc
, NULL
) == NULL
)
3292 goto out_sock_unregister
;
3294 err
= xfrm_register_km(&pfkeyv2_mgr
);
3296 goto out_remove_proc_entry
;
3299 out_remove_proc_entry
:
3300 #ifdef CONFIG_PROC_FS
3301 remove_proc_entry("net/pfkey", NULL
);
3302 out_sock_unregister
:
3304 sock_unregister(PF_KEY
);
3305 out_unregister_key_proto
:
3306 proto_unregister(&key_proto
);
3310 module_init(ipsec_pfkey_init
);
3311 module_exit(ipsec_pfkey_exit
);
3312 MODULE_LICENSE("GPL");
3313 MODULE_ALIAS_NETPROTO(PF_KEY
);