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>
30 #include <linux/audit.h>
34 #define _X2KEY(x) ((x) == XFRM_INF ? 0 : (x))
35 #define _KEY2X(x) ((x) == 0 ? XFRM_INF : (x))
38 /* List of all pfkey sockets. */
39 static HLIST_HEAD(pfkey_table
);
40 static DECLARE_WAIT_QUEUE_HEAD(pfkey_table_wait
);
41 static DEFINE_RWLOCK(pfkey_table_lock
);
42 static atomic_t pfkey_table_users
= ATOMIC_INIT(0);
44 static atomic_t pfkey_socks_nr
= ATOMIC_INIT(0);
47 /* struct sock must be the first member of struct pfkey_sock */
53 static inline struct pfkey_sock
*pfkey_sk(struct sock
*sk
)
55 return (struct pfkey_sock
*)sk
;
58 static void pfkey_sock_destruct(struct sock
*sk
)
60 skb_queue_purge(&sk
->sk_receive_queue
);
62 if (!sock_flag(sk
, SOCK_DEAD
)) {
63 printk("Attempt to release alive pfkey socket: %p\n", sk
);
67 BUG_TRAP(!atomic_read(&sk
->sk_rmem_alloc
));
68 BUG_TRAP(!atomic_read(&sk
->sk_wmem_alloc
));
70 atomic_dec(&pfkey_socks_nr
);
73 static void pfkey_table_grab(void)
75 write_lock_bh(&pfkey_table_lock
);
77 if (atomic_read(&pfkey_table_users
)) {
78 DECLARE_WAITQUEUE(wait
, current
);
80 add_wait_queue_exclusive(&pfkey_table_wait
, &wait
);
82 set_current_state(TASK_UNINTERRUPTIBLE
);
83 if (atomic_read(&pfkey_table_users
) == 0)
85 write_unlock_bh(&pfkey_table_lock
);
87 write_lock_bh(&pfkey_table_lock
);
90 __set_current_state(TASK_RUNNING
);
91 remove_wait_queue(&pfkey_table_wait
, &wait
);
95 static __inline__
void pfkey_table_ungrab(void)
97 write_unlock_bh(&pfkey_table_lock
);
98 wake_up(&pfkey_table_wait
);
101 static __inline__
void pfkey_lock_table(void)
103 /* read_lock() synchronizes us to pfkey_table_grab */
105 read_lock(&pfkey_table_lock
);
106 atomic_inc(&pfkey_table_users
);
107 read_unlock(&pfkey_table_lock
);
110 static __inline__
void pfkey_unlock_table(void)
112 if (atomic_dec_and_test(&pfkey_table_users
))
113 wake_up(&pfkey_table_wait
);
117 static const struct proto_ops pfkey_ops
;
119 static void pfkey_insert(struct sock
*sk
)
122 sk_add_node(sk
, &pfkey_table
);
123 pfkey_table_ungrab();
126 static void pfkey_remove(struct sock
*sk
)
129 sk_del_node_init(sk
);
130 pfkey_table_ungrab();
133 static struct proto key_proto
= {
135 .owner
= THIS_MODULE
,
136 .obj_size
= sizeof(struct pfkey_sock
),
139 static int pfkey_create(struct socket
*sock
, int protocol
)
144 if (!capable(CAP_NET_ADMIN
))
146 if (sock
->type
!= SOCK_RAW
)
147 return -ESOCKTNOSUPPORT
;
148 if (protocol
!= PF_KEY_V2
)
149 return -EPROTONOSUPPORT
;
152 sk
= sk_alloc(PF_KEY
, GFP_KERNEL
, &key_proto
, 1);
156 sock
->ops
= &pfkey_ops
;
157 sock_init_data(sock
, sk
);
159 sk
->sk_family
= PF_KEY
;
160 sk
->sk_destruct
= pfkey_sock_destruct
;
162 atomic_inc(&pfkey_socks_nr
);
171 static int pfkey_release(struct socket
*sock
)
173 struct sock
*sk
= sock
->sk
;
182 skb_queue_purge(&sk
->sk_write_queue
);
188 static int pfkey_broadcast_one(struct sk_buff
*skb
, struct sk_buff
**skb2
,
189 gfp_t allocation
, struct sock
*sk
)
195 if (atomic_read(&skb
->users
) != 1) {
196 *skb2
= skb_clone(skb
, allocation
);
199 atomic_inc(&skb
->users
);
203 if (atomic_read(&sk
->sk_rmem_alloc
) <= sk
->sk_rcvbuf
) {
205 skb_set_owner_r(*skb2
, sk
);
206 skb_queue_tail(&sk
->sk_receive_queue
, *skb2
);
207 sk
->sk_data_ready(sk
, (*skb2
)->len
);
216 /* Send SKB to all pfkey sockets matching selected criteria. */
217 #define BROADCAST_ALL 0
218 #define BROADCAST_ONE 1
219 #define BROADCAST_REGISTERED 2
220 #define BROADCAST_PROMISC_ONLY 4
221 static int pfkey_broadcast(struct sk_buff
*skb
, gfp_t allocation
,
222 int broadcast_flags
, struct sock
*one_sk
)
225 struct hlist_node
*node
;
226 struct sk_buff
*skb2
= NULL
;
229 /* XXX Do we need something like netlink_overrun? I think
230 * XXX PF_KEY socket apps will not mind current behavior.
236 sk_for_each(sk
, node
, &pfkey_table
) {
237 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
240 /* Yes, it means that if you are meant to receive this
241 * pfkey message you receive it twice as promiscuous
245 pfkey_broadcast_one(skb
, &skb2
, allocation
, sk
);
247 /* the exact target will be processed later */
250 if (broadcast_flags
!= BROADCAST_ALL
) {
251 if (broadcast_flags
& BROADCAST_PROMISC_ONLY
)
253 if ((broadcast_flags
& BROADCAST_REGISTERED
) &&
256 if (broadcast_flags
& BROADCAST_ONE
)
260 err2
= pfkey_broadcast_one(skb
, &skb2
, allocation
, sk
);
262 /* Error is cleare after succecful sending to at least one
264 if ((broadcast_flags
& BROADCAST_REGISTERED
) && err
)
267 pfkey_unlock_table();
270 err
= pfkey_broadcast_one(skb
, &skb2
, allocation
, one_sk
);
278 static inline void pfkey_hdr_dup(struct sadb_msg
*new, struct sadb_msg
*orig
)
283 static int pfkey_error(struct sadb_msg
*orig
, int err
, struct sock
*sk
)
285 struct sk_buff
*skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_KERNEL
);
286 struct sadb_msg
*hdr
;
291 /* Woe be to the platform trying to support PFKEY yet
292 * having normal errnos outside the 1-255 range, inclusive.
295 if (err
== ERESTARTSYS
||
296 err
== ERESTARTNOHAND
||
297 err
== ERESTARTNOINTR
)
301 BUG_ON(err
<= 0 || err
>= 256);
303 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
304 pfkey_hdr_dup(hdr
, orig
);
305 hdr
->sadb_msg_errno
= (uint8_t) err
;
306 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) /
309 pfkey_broadcast(skb
, GFP_KERNEL
, BROADCAST_ONE
, sk
);
314 static u8 sadb_ext_min_len
[] = {
315 [SADB_EXT_RESERVED
] = (u8
) 0,
316 [SADB_EXT_SA
] = (u8
) sizeof(struct sadb_sa
),
317 [SADB_EXT_LIFETIME_CURRENT
] = (u8
) sizeof(struct sadb_lifetime
),
318 [SADB_EXT_LIFETIME_HARD
] = (u8
) sizeof(struct sadb_lifetime
),
319 [SADB_EXT_LIFETIME_SOFT
] = (u8
) sizeof(struct sadb_lifetime
),
320 [SADB_EXT_ADDRESS_SRC
] = (u8
) sizeof(struct sadb_address
),
321 [SADB_EXT_ADDRESS_DST
] = (u8
) sizeof(struct sadb_address
),
322 [SADB_EXT_ADDRESS_PROXY
] = (u8
) sizeof(struct sadb_address
),
323 [SADB_EXT_KEY_AUTH
] = (u8
) sizeof(struct sadb_key
),
324 [SADB_EXT_KEY_ENCRYPT
] = (u8
) sizeof(struct sadb_key
),
325 [SADB_EXT_IDENTITY_SRC
] = (u8
) sizeof(struct sadb_ident
),
326 [SADB_EXT_IDENTITY_DST
] = (u8
) sizeof(struct sadb_ident
),
327 [SADB_EXT_SENSITIVITY
] = (u8
) sizeof(struct sadb_sens
),
328 [SADB_EXT_PROPOSAL
] = (u8
) sizeof(struct sadb_prop
),
329 [SADB_EXT_SUPPORTED_AUTH
] = (u8
) sizeof(struct sadb_supported
),
330 [SADB_EXT_SUPPORTED_ENCRYPT
] = (u8
) sizeof(struct sadb_supported
),
331 [SADB_EXT_SPIRANGE
] = (u8
) sizeof(struct sadb_spirange
),
332 [SADB_X_EXT_KMPRIVATE
] = (u8
) sizeof(struct sadb_x_kmprivate
),
333 [SADB_X_EXT_POLICY
] = (u8
) sizeof(struct sadb_x_policy
),
334 [SADB_X_EXT_SA2
] = (u8
) sizeof(struct sadb_x_sa2
),
335 [SADB_X_EXT_NAT_T_TYPE
] = (u8
) sizeof(struct sadb_x_nat_t_type
),
336 [SADB_X_EXT_NAT_T_SPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
337 [SADB_X_EXT_NAT_T_DPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
338 [SADB_X_EXT_NAT_T_OA
] = (u8
) sizeof(struct sadb_address
),
339 [SADB_X_EXT_SEC_CTX
] = (u8
) sizeof(struct sadb_x_sec_ctx
),
342 /* Verify sadb_address_{len,prefixlen} against sa_family. */
343 static int verify_address_len(void *p
)
345 struct sadb_address
*sp
= p
;
346 struct sockaddr
*addr
= (struct sockaddr
*)(sp
+ 1);
347 struct sockaddr_in
*sin
;
348 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
349 struct sockaddr_in6
*sin6
;
353 switch (addr
->sa_family
) {
355 len
= sizeof(*sp
) + sizeof(*sin
) + (sizeof(uint64_t) - 1);
356 len
/= sizeof(uint64_t);
357 if (sp
->sadb_address_len
!= len
||
358 sp
->sadb_address_prefixlen
> 32)
361 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
363 len
= sizeof(*sp
) + sizeof(*sin6
) + (sizeof(uint64_t) - 1);
364 len
/= sizeof(uint64_t);
365 if (sp
->sadb_address_len
!= len
||
366 sp
->sadb_address_prefixlen
> 128)
371 /* It is user using kernel to keep track of security
372 * associations for another protocol, such as
373 * OSPF/RSVP/RIPV2/MIP. It is user's job to verify
376 * XXX Actually, association/policy database is not yet
377 * XXX able to cope with arbitrary sockaddr families.
378 * XXX When it can, remove this -EINVAL. -DaveM
387 static inline int pfkey_sec_ctx_len(struct sadb_x_sec_ctx
*sec_ctx
)
391 len
+= sizeof(struct sadb_x_sec_ctx
);
392 len
+= sec_ctx
->sadb_x_ctx_len
;
393 len
+= sizeof(uint64_t) - 1;
394 len
/= sizeof(uint64_t);
399 static inline int verify_sec_ctx_len(void *p
)
401 struct sadb_x_sec_ctx
*sec_ctx
= (struct sadb_x_sec_ctx
*)p
;
404 if (sec_ctx
->sadb_x_ctx_len
> PAGE_SIZE
)
407 len
= pfkey_sec_ctx_len(sec_ctx
);
409 if (sec_ctx
->sadb_x_sec_len
!= len
)
415 static inline struct xfrm_user_sec_ctx
*pfkey_sadb2xfrm_user_sec_ctx(struct sadb_x_sec_ctx
*sec_ctx
)
417 struct xfrm_user_sec_ctx
*uctx
= NULL
;
418 int ctx_size
= sec_ctx
->sadb_x_ctx_len
;
420 uctx
= kmalloc((sizeof(*uctx
)+ctx_size
), GFP_KERNEL
);
425 uctx
->len
= pfkey_sec_ctx_len(sec_ctx
);
426 uctx
->exttype
= sec_ctx
->sadb_x_sec_exttype
;
427 uctx
->ctx_doi
= sec_ctx
->sadb_x_ctx_doi
;
428 uctx
->ctx_alg
= sec_ctx
->sadb_x_ctx_alg
;
429 uctx
->ctx_len
= sec_ctx
->sadb_x_ctx_len
;
430 memcpy(uctx
+ 1, sec_ctx
+ 1,
436 static int present_and_same_family(struct sadb_address
*src
,
437 struct sadb_address
*dst
)
439 struct sockaddr
*s_addr
, *d_addr
;
444 s_addr
= (struct sockaddr
*)(src
+ 1);
445 d_addr
= (struct sockaddr
*)(dst
+ 1);
446 if (s_addr
->sa_family
!= d_addr
->sa_family
)
448 if (s_addr
->sa_family
!= AF_INET
449 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
450 && s_addr
->sa_family
!= AF_INET6
458 static int parse_exthdrs(struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
460 char *p
= (char *) hdr
;
466 struct sadb_ext
*ehdr
= (struct sadb_ext
*) p
;
470 ext_len
= ehdr
->sadb_ext_len
;
471 ext_len
*= sizeof(uint64_t);
472 ext_type
= ehdr
->sadb_ext_type
;
473 if (ext_len
< sizeof(uint64_t) ||
475 ext_type
== SADB_EXT_RESERVED
)
478 if (ext_type
<= SADB_EXT_MAX
) {
479 int min
= (int) sadb_ext_min_len
[ext_type
];
482 if (ext_hdrs
[ext_type
-1] != NULL
)
484 if (ext_type
== SADB_EXT_ADDRESS_SRC
||
485 ext_type
== SADB_EXT_ADDRESS_DST
||
486 ext_type
== SADB_EXT_ADDRESS_PROXY
||
487 ext_type
== SADB_X_EXT_NAT_T_OA
) {
488 if (verify_address_len(p
))
491 if (ext_type
== SADB_X_EXT_SEC_CTX
) {
492 if (verify_sec_ctx_len(p
))
495 ext_hdrs
[ext_type
-1] = p
;
505 pfkey_satype2proto(uint8_t satype
)
508 case SADB_SATYPE_UNSPEC
:
509 return IPSEC_PROTO_ANY
;
512 case SADB_SATYPE_ESP
:
514 case SADB_X_SATYPE_IPCOMP
:
524 pfkey_proto2satype(uint16_t proto
)
528 return SADB_SATYPE_AH
;
530 return SADB_SATYPE_ESP
;
532 return SADB_X_SATYPE_IPCOMP
;
540 /* BTW, this scheme means that there is no way with PFKEY2 sockets to
541 * say specifically 'just raw sockets' as we encode them as 255.
544 static uint8_t pfkey_proto_to_xfrm(uint8_t proto
)
546 return (proto
== IPSEC_PROTO_ANY
? 0 : proto
);
549 static uint8_t pfkey_proto_from_xfrm(uint8_t proto
)
551 return (proto
? proto
: IPSEC_PROTO_ANY
);
554 static int pfkey_sadb_addr2xfrm_addr(struct sadb_address
*addr
,
555 xfrm_address_t
*xaddr
)
557 switch (((struct sockaddr
*)(addr
+ 1))->sa_family
) {
560 ((struct sockaddr_in
*)(addr
+ 1))->sin_addr
.s_addr
;
562 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
565 &((struct sockaddr_in6
*)(addr
+ 1))->sin6_addr
,
566 sizeof(struct in6_addr
));
575 static struct xfrm_state
*pfkey_xfrm_state_lookup(struct sadb_msg
*hdr
, void **ext_hdrs
)
578 struct sadb_address
*addr
;
580 unsigned short family
;
581 xfrm_address_t
*xaddr
;
583 sa
= (struct sadb_sa
*) ext_hdrs
[SADB_EXT_SA
-1];
587 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
591 /* sadb_address_len should be checked by caller */
592 addr
= (struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
596 family
= ((struct sockaddr
*)(addr
+ 1))->sa_family
;
599 xaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(addr
+ 1))->sin_addr
;
601 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
603 xaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(addr
+ 1))->sin6_addr
;
613 return xfrm_state_lookup(xaddr
, sa
->sadb_sa_spi
, proto
, family
);
616 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
618 pfkey_sockaddr_size(sa_family_t family
)
622 return PFKEY_ALIGN8(sizeof(struct sockaddr_in
));
623 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
625 return PFKEY_ALIGN8(sizeof(struct sockaddr_in6
));
633 static inline int pfkey_mode_from_xfrm(int mode
)
636 case XFRM_MODE_TRANSPORT
:
637 return IPSEC_MODE_TRANSPORT
;
638 case XFRM_MODE_TUNNEL
:
639 return IPSEC_MODE_TUNNEL
;
641 return IPSEC_MODE_BEET
;
647 static inline int pfkey_mode_to_xfrm(int mode
)
650 case IPSEC_MODE_ANY
: /*XXX*/
651 case IPSEC_MODE_TRANSPORT
:
652 return XFRM_MODE_TRANSPORT
;
653 case IPSEC_MODE_TUNNEL
:
654 return XFRM_MODE_TUNNEL
;
655 case IPSEC_MODE_BEET
:
656 return XFRM_MODE_BEET
;
662 static struct sk_buff
* pfkey_xfrm_state2msg(struct xfrm_state
*x
, int add_keys
, int hsc
)
665 struct sadb_msg
*hdr
;
667 struct sadb_lifetime
*lifetime
;
668 struct sadb_address
*addr
;
669 struct sadb_key
*key
;
670 struct sadb_x_sa2
*sa2
;
671 struct sockaddr_in
*sin
;
672 struct sadb_x_sec_ctx
*sec_ctx
;
673 struct xfrm_sec_ctx
*xfrm_ctx
;
675 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
676 struct sockaddr_in6
*sin6
;
679 int auth_key_size
= 0;
680 int encrypt_key_size
= 0;
682 struct xfrm_encap_tmpl
*natt
= NULL
;
685 /* address family check */
686 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
688 return ERR_PTR(-EINVAL
);
690 /* base, SA, (lifetime (HSC),) address(SD), (address(P),)
691 key(AE), (identity(SD),) (sensitivity)> */
692 size
= sizeof(struct sadb_msg
) +sizeof(struct sadb_sa
) +
693 sizeof(struct sadb_lifetime
) +
694 ((hsc
& 1) ? sizeof(struct sadb_lifetime
) : 0) +
695 ((hsc
& 2) ? sizeof(struct sadb_lifetime
) : 0) +
696 sizeof(struct sadb_address
)*2 +
698 sizeof(struct sadb_x_sa2
);
700 if ((xfrm_ctx
= x
->security
)) {
701 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
702 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
705 /* identity & sensitivity */
707 if ((x
->props
.family
== AF_INET
&&
708 x
->sel
.saddr
.a4
!= x
->props
.saddr
.a4
)
709 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
710 || (x
->props
.family
== AF_INET6
&&
711 memcmp (x
->sel
.saddr
.a6
, x
->props
.saddr
.a6
, sizeof (struct in6_addr
)))
714 size
+= sizeof(struct sadb_address
) + sockaddr_size
;
717 if (x
->aalg
&& x
->aalg
->alg_key_len
) {
719 PFKEY_ALIGN8((x
->aalg
->alg_key_len
+ 7) / 8);
720 size
+= sizeof(struct sadb_key
) + auth_key_size
;
722 if (x
->ealg
&& x
->ealg
->alg_key_len
) {
724 PFKEY_ALIGN8((x
->ealg
->alg_key_len
+7) / 8);
725 size
+= sizeof(struct sadb_key
) + encrypt_key_size
;
731 if (natt
&& natt
->encap_type
) {
732 size
+= sizeof(struct sadb_x_nat_t_type
);
733 size
+= sizeof(struct sadb_x_nat_t_port
);
734 size
+= sizeof(struct sadb_x_nat_t_port
);
737 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
739 return ERR_PTR(-ENOBUFS
);
741 /* call should fill header later */
742 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
743 memset(hdr
, 0, size
); /* XXX do we need this ? */
744 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
747 sa
= (struct sadb_sa
*) skb_put(skb
, sizeof(struct sadb_sa
));
748 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
749 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
750 sa
->sadb_sa_spi
= x
->id
.spi
;
751 sa
->sadb_sa_replay
= x
->props
.replay_window
;
752 switch (x
->km
.state
) {
753 case XFRM_STATE_VALID
:
754 sa
->sadb_sa_state
= x
->km
.dying
?
755 SADB_SASTATE_DYING
: SADB_SASTATE_MATURE
;
758 sa
->sadb_sa_state
= SADB_SASTATE_LARVAL
;
761 sa
->sadb_sa_state
= SADB_SASTATE_DEAD
;
764 sa
->sadb_sa_auth
= 0;
766 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byname(x
->aalg
->alg_name
, 0);
767 sa
->sadb_sa_auth
= a
? a
->desc
.sadb_alg_id
: 0;
769 sa
->sadb_sa_encrypt
= 0;
770 BUG_ON(x
->ealg
&& x
->calg
);
772 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byname(x
->ealg
->alg_name
, 0);
773 sa
->sadb_sa_encrypt
= a
? a
->desc
.sadb_alg_id
: 0;
775 /* KAME compatible: sadb_sa_encrypt is overloaded with calg id */
777 struct xfrm_algo_desc
*a
= xfrm_calg_get_byname(x
->calg
->alg_name
, 0);
778 sa
->sadb_sa_encrypt
= a
? a
->desc
.sadb_alg_id
: 0;
781 sa
->sadb_sa_flags
= 0;
782 if (x
->props
.flags
& XFRM_STATE_NOECN
)
783 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOECN
;
784 if (x
->props
.flags
& XFRM_STATE_DECAP_DSCP
)
785 sa
->sadb_sa_flags
|= SADB_SAFLAGS_DECAP_DSCP
;
786 if (x
->props
.flags
& XFRM_STATE_NOPMTUDISC
)
787 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOPMTUDISC
;
791 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
792 sizeof(struct sadb_lifetime
));
793 lifetime
->sadb_lifetime_len
=
794 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
795 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
796 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.hard_packet_limit
);
797 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.hard_byte_limit
);
798 lifetime
->sadb_lifetime_addtime
= x
->lft
.hard_add_expires_seconds
;
799 lifetime
->sadb_lifetime_usetime
= x
->lft
.hard_use_expires_seconds
;
803 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
804 sizeof(struct sadb_lifetime
));
805 lifetime
->sadb_lifetime_len
=
806 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
807 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
808 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.soft_packet_limit
);
809 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.soft_byte_limit
);
810 lifetime
->sadb_lifetime_addtime
= x
->lft
.soft_add_expires_seconds
;
811 lifetime
->sadb_lifetime_usetime
= x
->lft
.soft_use_expires_seconds
;
814 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
815 sizeof(struct sadb_lifetime
));
816 lifetime
->sadb_lifetime_len
=
817 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
818 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
819 lifetime
->sadb_lifetime_allocations
= x
->curlft
.packets
;
820 lifetime
->sadb_lifetime_bytes
= x
->curlft
.bytes
;
821 lifetime
->sadb_lifetime_addtime
= x
->curlft
.add_time
;
822 lifetime
->sadb_lifetime_usetime
= x
->curlft
.use_time
;
824 addr
= (struct sadb_address
*) skb_put(skb
,
825 sizeof(struct sadb_address
)+sockaddr_size
);
826 addr
->sadb_address_len
=
827 (sizeof(struct sadb_address
)+sockaddr_size
)/
829 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
830 /* "if the ports are non-zero, then the sadb_address_proto field,
831 normally zero, MUST be filled in with the transport
832 protocol's number." - RFC2367 */
833 addr
->sadb_address_proto
= 0;
834 addr
->sadb_address_reserved
= 0;
835 if (x
->props
.family
== AF_INET
) {
836 addr
->sadb_address_prefixlen
= 32;
838 sin
= (struct sockaddr_in
*) (addr
+ 1);
839 sin
->sin_family
= AF_INET
;
840 sin
->sin_addr
.s_addr
= x
->props
.saddr
.a4
;
842 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
844 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
845 else if (x
->props
.family
== AF_INET6
) {
846 addr
->sadb_address_prefixlen
= 128;
848 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
849 sin6
->sin6_family
= AF_INET6
;
851 sin6
->sin6_flowinfo
= 0;
852 memcpy(&sin6
->sin6_addr
, x
->props
.saddr
.a6
,
853 sizeof(struct in6_addr
));
854 sin6
->sin6_scope_id
= 0;
861 addr
= (struct sadb_address
*) skb_put(skb
,
862 sizeof(struct sadb_address
)+sockaddr_size
);
863 addr
->sadb_address_len
=
864 (sizeof(struct sadb_address
)+sockaddr_size
)/
866 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
867 addr
->sadb_address_proto
= 0;
868 addr
->sadb_address_prefixlen
= 32; /* XXX */
869 addr
->sadb_address_reserved
= 0;
870 if (x
->props
.family
== AF_INET
) {
871 sin
= (struct sockaddr_in
*) (addr
+ 1);
872 sin
->sin_family
= AF_INET
;
873 sin
->sin_addr
.s_addr
= x
->id
.daddr
.a4
;
875 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
877 if (x
->sel
.saddr
.a4
!= x
->props
.saddr
.a4
) {
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 sin
= (struct sockaddr_in
*) (addr
+ 1);
890 sin
->sin_family
= AF_INET
;
891 sin
->sin_addr
.s_addr
= x
->sel
.saddr
.a4
;
892 sin
->sin_port
= x
->sel
.sport
;
893 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
896 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
897 else if (x
->props
.family
== AF_INET6
) {
898 addr
->sadb_address_prefixlen
= 128;
900 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
901 sin6
->sin6_family
= AF_INET6
;
903 sin6
->sin6_flowinfo
= 0;
904 memcpy(&sin6
->sin6_addr
, x
->id
.daddr
.a6
, sizeof(struct in6_addr
));
905 sin6
->sin6_scope_id
= 0;
907 if (memcmp (x
->sel
.saddr
.a6
, x
->props
.saddr
.a6
,
908 sizeof(struct in6_addr
))) {
909 addr
= (struct sadb_address
*) skb_put(skb
,
910 sizeof(struct sadb_address
)+sockaddr_size
);
911 addr
->sadb_address_len
=
912 (sizeof(struct sadb_address
)+sockaddr_size
)/
914 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_PROXY
;
915 addr
->sadb_address_proto
=
916 pfkey_proto_from_xfrm(x
->sel
.proto
);
917 addr
->sadb_address_prefixlen
= x
->sel
.prefixlen_s
;
918 addr
->sadb_address_reserved
= 0;
920 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
921 sin6
->sin6_family
= AF_INET6
;
922 sin6
->sin6_port
= x
->sel
.sport
;
923 sin6
->sin6_flowinfo
= 0;
924 memcpy(&sin6
->sin6_addr
, x
->sel
.saddr
.a6
,
925 sizeof(struct in6_addr
));
926 sin6
->sin6_scope_id
= 0;
934 if (add_keys
&& auth_key_size
) {
935 key
= (struct sadb_key
*) skb_put(skb
,
936 sizeof(struct sadb_key
)+auth_key_size
);
937 key
->sadb_key_len
= (sizeof(struct sadb_key
) + auth_key_size
) /
939 key
->sadb_key_exttype
= SADB_EXT_KEY_AUTH
;
940 key
->sadb_key_bits
= x
->aalg
->alg_key_len
;
941 key
->sadb_key_reserved
= 0;
942 memcpy(key
+ 1, x
->aalg
->alg_key
, (x
->aalg
->alg_key_len
+7)/8);
945 if (add_keys
&& encrypt_key_size
) {
946 key
= (struct sadb_key
*) skb_put(skb
,
947 sizeof(struct sadb_key
)+encrypt_key_size
);
948 key
->sadb_key_len
= (sizeof(struct sadb_key
) +
949 encrypt_key_size
) / sizeof(uint64_t);
950 key
->sadb_key_exttype
= SADB_EXT_KEY_ENCRYPT
;
951 key
->sadb_key_bits
= x
->ealg
->alg_key_len
;
952 key
->sadb_key_reserved
= 0;
953 memcpy(key
+ 1, x
->ealg
->alg_key
,
954 (x
->ealg
->alg_key_len
+7)/8);
958 sa2
= (struct sadb_x_sa2
*) skb_put(skb
, sizeof(struct sadb_x_sa2
));
959 sa2
->sadb_x_sa2_len
= sizeof(struct sadb_x_sa2
)/sizeof(uint64_t);
960 sa2
->sadb_x_sa2_exttype
= SADB_X_EXT_SA2
;
961 if ((mode
= pfkey_mode_from_xfrm(x
->props
.mode
)) < 0) {
963 return ERR_PTR(-EINVAL
);
965 sa2
->sadb_x_sa2_mode
= mode
;
966 sa2
->sadb_x_sa2_reserved1
= 0;
967 sa2
->sadb_x_sa2_reserved2
= 0;
968 sa2
->sadb_x_sa2_sequence
= 0;
969 sa2
->sadb_x_sa2_reqid
= x
->props
.reqid
;
971 if (natt
&& natt
->encap_type
) {
972 struct sadb_x_nat_t_type
*n_type
;
973 struct sadb_x_nat_t_port
*n_port
;
976 n_type
= (struct sadb_x_nat_t_type
*) skb_put(skb
, sizeof(*n_type
));
977 n_type
->sadb_x_nat_t_type_len
= sizeof(*n_type
)/sizeof(uint64_t);
978 n_type
->sadb_x_nat_t_type_exttype
= SADB_X_EXT_NAT_T_TYPE
;
979 n_type
->sadb_x_nat_t_type_type
= natt
->encap_type
;
980 n_type
->sadb_x_nat_t_type_reserved
[0] = 0;
981 n_type
->sadb_x_nat_t_type_reserved
[1] = 0;
982 n_type
->sadb_x_nat_t_type_reserved
[2] = 0;
985 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
986 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
987 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
988 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
989 n_port
->sadb_x_nat_t_port_reserved
= 0;
992 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
993 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
994 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
995 n_port
->sadb_x_nat_t_port_port
= natt
->encap_dport
;
996 n_port
->sadb_x_nat_t_port_reserved
= 0;
999 /* security context */
1001 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
,
1002 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
1003 sec_ctx
->sadb_x_sec_len
=
1004 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
1005 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
1006 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
1007 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
1008 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
1009 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
1016 static struct xfrm_state
* pfkey_msg2xfrm_state(struct sadb_msg
*hdr
,
1019 struct xfrm_state
*x
;
1020 struct sadb_lifetime
*lifetime
;
1022 struct sadb_key
*key
;
1023 struct sadb_x_sec_ctx
*sec_ctx
;
1028 sa
= (struct sadb_sa
*) ext_hdrs
[SADB_EXT_SA
-1];
1030 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1031 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1032 return ERR_PTR(-EINVAL
);
1033 if (hdr
->sadb_msg_satype
== SADB_SATYPE_ESP
&&
1034 !ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1])
1035 return ERR_PTR(-EINVAL
);
1036 if (hdr
->sadb_msg_satype
== SADB_SATYPE_AH
&&
1037 !ext_hdrs
[SADB_EXT_KEY_AUTH
-1])
1038 return ERR_PTR(-EINVAL
);
1039 if (!!ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1] !=
1040 !!ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1])
1041 return ERR_PTR(-EINVAL
);
1043 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1045 return ERR_PTR(-EINVAL
);
1047 /* default error is no buffer space */
1052 Only SADB_SASTATE_MATURE SAs may be submitted in an SADB_ADD message.
1053 SADB_SASTATE_LARVAL SAs are created by SADB_GETSPI and it is not
1054 sensible to add a new SA in the DYING or SADB_SASTATE_DEAD state.
1055 Therefore, the sadb_sa_state field of all submitted SAs MUST be
1056 SADB_SASTATE_MATURE and the kernel MUST return an error if this is
1059 However, KAME setkey always uses SADB_SASTATE_LARVAL.
1060 Hence, we have to _ignore_ sadb_sa_state, which is also reasonable.
1062 if (sa
->sadb_sa_auth
> SADB_AALG_MAX
||
1063 (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
&&
1064 sa
->sadb_sa_encrypt
> SADB_X_CALG_MAX
) ||
1065 sa
->sadb_sa_encrypt
> SADB_EALG_MAX
)
1066 return ERR_PTR(-EINVAL
);
1067 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_AUTH
-1];
1069 sa
->sadb_sa_auth
!= SADB_X_AALG_NULL
&&
1070 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1071 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1072 return ERR_PTR(-EINVAL
);
1073 key
= ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1075 sa
->sadb_sa_encrypt
!= SADB_EALG_NULL
&&
1076 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1077 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1078 return ERR_PTR(-EINVAL
);
1080 x
= xfrm_state_alloc();
1082 return ERR_PTR(-ENOBUFS
);
1084 x
->id
.proto
= proto
;
1085 x
->id
.spi
= sa
->sadb_sa_spi
;
1086 x
->props
.replay_window
= sa
->sadb_sa_replay
;
1087 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOECN
)
1088 x
->props
.flags
|= XFRM_STATE_NOECN
;
1089 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_DECAP_DSCP
)
1090 x
->props
.flags
|= XFRM_STATE_DECAP_DSCP
;
1091 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOPMTUDISC
)
1092 x
->props
.flags
|= XFRM_STATE_NOPMTUDISC
;
1094 lifetime
= (struct sadb_lifetime
*) ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1];
1095 if (lifetime
!= NULL
) {
1096 x
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1097 x
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1098 x
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1099 x
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1101 lifetime
= (struct sadb_lifetime
*) ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1];
1102 if (lifetime
!= NULL
) {
1103 x
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1104 x
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1105 x
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1106 x
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1109 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
1110 if (sec_ctx
!= NULL
) {
1111 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
1116 err
= security_xfrm_state_alloc(x
, uctx
);
1123 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_AUTH
-1];
1124 if (sa
->sadb_sa_auth
) {
1126 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byid(sa
->sadb_sa_auth
);
1132 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1133 x
->aalg
= kmalloc(sizeof(*x
->aalg
) + keysize
, GFP_KERNEL
);
1136 strcpy(x
->aalg
->alg_name
, a
->name
);
1137 x
->aalg
->alg_key_len
= 0;
1139 x
->aalg
->alg_key_len
= key
->sadb_key_bits
;
1140 memcpy(x
->aalg
->alg_key
, key
+1, keysize
);
1142 x
->props
.aalgo
= sa
->sadb_sa_auth
;
1143 /* x->algo.flags = sa->sadb_sa_flags; */
1145 if (sa
->sadb_sa_encrypt
) {
1146 if (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
) {
1147 struct xfrm_algo_desc
*a
= xfrm_calg_get_byid(sa
->sadb_sa_encrypt
);
1152 x
->calg
= kmalloc(sizeof(*x
->calg
), GFP_KERNEL
);
1155 strcpy(x
->calg
->alg_name
, a
->name
);
1156 x
->props
.calgo
= sa
->sadb_sa_encrypt
;
1159 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byid(sa
->sadb_sa_encrypt
);
1164 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1166 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1167 x
->ealg
= kmalloc(sizeof(*x
->ealg
) + keysize
, GFP_KERNEL
);
1170 strcpy(x
->ealg
->alg_name
, a
->name
);
1171 x
->ealg
->alg_key_len
= 0;
1173 x
->ealg
->alg_key_len
= key
->sadb_key_bits
;
1174 memcpy(x
->ealg
->alg_key
, key
+1, keysize
);
1176 x
->props
.ealgo
= sa
->sadb_sa_encrypt
;
1179 /* x->algo.flags = sa->sadb_sa_flags; */
1181 x
->props
.family
= pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1183 if (!x
->props
.family
) {
1184 err
= -EAFNOSUPPORT
;
1187 pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
1190 if (ext_hdrs
[SADB_X_EXT_SA2
-1]) {
1191 struct sadb_x_sa2
*sa2
= (void*)ext_hdrs
[SADB_X_EXT_SA2
-1];
1192 int mode
= pfkey_mode_to_xfrm(sa2
->sadb_x_sa2_mode
);
1197 x
->props
.mode
= mode
;
1198 x
->props
.reqid
= sa2
->sadb_x_sa2_reqid
;
1201 if (ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1]) {
1202 struct sadb_address
*addr
= ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1];
1204 /* Nobody uses this, but we try. */
1205 x
->sel
.family
= pfkey_sadb_addr2xfrm_addr(addr
, &x
->sel
.saddr
);
1206 x
->sel
.prefixlen_s
= addr
->sadb_address_prefixlen
;
1210 x
->sel
.family
= x
->props
.family
;
1212 if (ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1]) {
1213 struct sadb_x_nat_t_type
* n_type
;
1214 struct xfrm_encap_tmpl
*natt
;
1216 x
->encap
= kmalloc(sizeof(*x
->encap
), GFP_KERNEL
);
1221 n_type
= ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1];
1222 natt
->encap_type
= n_type
->sadb_x_nat_t_type_type
;
1224 if (ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1]) {
1225 struct sadb_x_nat_t_port
* n_port
=
1226 ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1];
1227 natt
->encap_sport
= n_port
->sadb_x_nat_t_port_port
;
1229 if (ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1]) {
1230 struct sadb_x_nat_t_port
* n_port
=
1231 ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1];
1232 natt
->encap_dport
= n_port
->sadb_x_nat_t_port_port
;
1236 err
= xfrm_init_state(x
);
1240 x
->km
.seq
= hdr
->sadb_msg_seq
;
1244 x
->km
.state
= XFRM_STATE_DEAD
;
1246 return ERR_PTR(err
);
1249 static int pfkey_reserved(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1254 static int pfkey_getspi(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1256 struct sk_buff
*resp_skb
;
1257 struct sadb_x_sa2
*sa2
;
1258 struct sadb_address
*saddr
, *daddr
;
1259 struct sadb_msg
*out_hdr
;
1260 struct xfrm_state
*x
= NULL
;
1264 unsigned short family
;
1265 xfrm_address_t
*xsaddr
= NULL
, *xdaddr
= NULL
;
1267 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1268 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1271 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1275 if ((sa2
= ext_hdrs
[SADB_X_EXT_SA2
-1]) != NULL
) {
1276 mode
= pfkey_mode_to_xfrm(sa2
->sadb_x_sa2_mode
);
1279 reqid
= sa2
->sadb_x_sa2_reqid
;
1285 saddr
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1];
1286 daddr
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
1288 family
= ((struct sockaddr
*)(saddr
+ 1))->sa_family
;
1291 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(daddr
+ 1))->sin_addr
.s_addr
;
1292 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(saddr
+ 1))->sin_addr
.s_addr
;
1294 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1296 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(daddr
+ 1))->sin6_addr
;
1297 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(saddr
+ 1))->sin6_addr
;
1302 if (hdr
->sadb_msg_seq
) {
1303 x
= xfrm_find_acq_byseq(hdr
->sadb_msg_seq
);
1304 if (x
&& xfrm_addr_cmp(&x
->id
.daddr
, xdaddr
, family
)) {
1311 x
= xfrm_find_acq(mode
, reqid
, proto
, xdaddr
, xsaddr
, 1, family
);
1316 resp_skb
= ERR_PTR(-ENOENT
);
1318 spin_lock_bh(&x
->lock
);
1319 if (x
->km
.state
!= XFRM_STATE_DEAD
) {
1320 struct sadb_spirange
*range
= ext_hdrs
[SADB_EXT_SPIRANGE
-1];
1321 u32 min_spi
, max_spi
;
1323 if (range
!= NULL
) {
1324 min_spi
= range
->sadb_spirange_min
;
1325 max_spi
= range
->sadb_spirange_max
;
1328 max_spi
= 0x0fffffff;
1330 xfrm_alloc_spi(x
, htonl(min_spi
), htonl(max_spi
));
1332 resp_skb
= pfkey_xfrm_state2msg(x
, 0, 3);
1334 spin_unlock_bh(&x
->lock
);
1336 if (IS_ERR(resp_skb
)) {
1338 return PTR_ERR(resp_skb
);
1341 out_hdr
= (struct sadb_msg
*) resp_skb
->data
;
1342 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1343 out_hdr
->sadb_msg_type
= SADB_GETSPI
;
1344 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1345 out_hdr
->sadb_msg_errno
= 0;
1346 out_hdr
->sadb_msg_reserved
= 0;
1347 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1348 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1352 pfkey_broadcast(resp_skb
, GFP_KERNEL
, BROADCAST_ONE
, sk
);
1357 static int pfkey_acquire(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1359 struct xfrm_state
*x
;
1361 if (hdr
->sadb_msg_len
!= sizeof(struct sadb_msg
)/8)
1364 if (hdr
->sadb_msg_seq
== 0 || hdr
->sadb_msg_errno
== 0)
1367 x
= xfrm_find_acq_byseq(hdr
->sadb_msg_seq
);
1371 spin_lock_bh(&x
->lock
);
1372 if (x
->km
.state
== XFRM_STATE_ACQ
) {
1373 x
->km
.state
= XFRM_STATE_ERROR
;
1376 spin_unlock_bh(&x
->lock
);
1381 static inline int event2poltype(int event
)
1384 case XFRM_MSG_DELPOLICY
:
1385 return SADB_X_SPDDELETE
;
1386 case XFRM_MSG_NEWPOLICY
:
1387 return SADB_X_SPDADD
;
1388 case XFRM_MSG_UPDPOLICY
:
1389 return SADB_X_SPDUPDATE
;
1390 case XFRM_MSG_POLEXPIRE
:
1391 // return SADB_X_SPDEXPIRE;
1393 printk("pfkey: Unknown policy event %d\n", event
);
1400 static inline int event2keytype(int event
)
1403 case XFRM_MSG_DELSA
:
1405 case XFRM_MSG_NEWSA
:
1407 case XFRM_MSG_UPDSA
:
1409 case XFRM_MSG_EXPIRE
:
1412 printk("pfkey: Unknown SA event %d\n", event
);
1420 static int key_notify_sa(struct xfrm_state
*x
, struct km_event
*c
)
1422 struct sk_buff
*skb
;
1423 struct sadb_msg
*hdr
;
1426 if (c
->event
== XFRM_MSG_DELSA
)
1429 skb
= pfkey_xfrm_state2msg(x
, 0, hsc
);
1432 return PTR_ERR(skb
);
1434 hdr
= (struct sadb_msg
*) skb
->data
;
1435 hdr
->sadb_msg_version
= PF_KEY_V2
;
1436 hdr
->sadb_msg_type
= event2keytype(c
->event
);
1437 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1438 hdr
->sadb_msg_errno
= 0;
1439 hdr
->sadb_msg_reserved
= 0;
1440 hdr
->sadb_msg_seq
= c
->seq
;
1441 hdr
->sadb_msg_pid
= c
->pid
;
1443 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
1448 static int pfkey_add(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1450 struct xfrm_state
*x
;
1454 x
= pfkey_msg2xfrm_state(hdr
, ext_hdrs
);
1459 if (hdr
->sadb_msg_type
== SADB_ADD
)
1460 err
= xfrm_state_add(x
);
1462 err
= xfrm_state_update(x
);
1464 xfrm_audit_log(audit_get_loginuid(current
->audit_context
), 0,
1465 AUDIT_MAC_IPSEC_ADDSA
, err
? 0 : 1, NULL
, x
);
1468 x
->km
.state
= XFRM_STATE_DEAD
;
1469 __xfrm_state_put(x
);
1473 if (hdr
->sadb_msg_type
== SADB_ADD
)
1474 c
.event
= XFRM_MSG_NEWSA
;
1476 c
.event
= XFRM_MSG_UPDSA
;
1477 c
.seq
= hdr
->sadb_msg_seq
;
1478 c
.pid
= hdr
->sadb_msg_pid
;
1479 km_state_notify(x
, &c
);
1485 static int pfkey_delete(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1487 struct xfrm_state
*x
;
1491 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1492 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1493 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1496 x
= pfkey_xfrm_state_lookup(hdr
, ext_hdrs
);
1500 if ((err
= security_xfrm_state_delete(x
)))
1503 if (xfrm_state_kern(x
)) {
1508 err
= xfrm_state_delete(x
);
1513 c
.seq
= hdr
->sadb_msg_seq
;
1514 c
.pid
= hdr
->sadb_msg_pid
;
1515 c
.event
= XFRM_MSG_DELSA
;
1516 km_state_notify(x
, &c
);
1518 xfrm_audit_log(audit_get_loginuid(current
->audit_context
), 0,
1519 AUDIT_MAC_IPSEC_DELSA
, err
? 0 : 1, NULL
, x
);
1525 static int pfkey_get(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1528 struct sk_buff
*out_skb
;
1529 struct sadb_msg
*out_hdr
;
1530 struct xfrm_state
*x
;
1532 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1533 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1534 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1537 x
= pfkey_xfrm_state_lookup(hdr
, ext_hdrs
);
1541 out_skb
= pfkey_xfrm_state2msg(x
, 1, 3);
1542 proto
= x
->id
.proto
;
1544 if (IS_ERR(out_skb
))
1545 return PTR_ERR(out_skb
);
1547 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1548 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1549 out_hdr
->sadb_msg_type
= SADB_DUMP
;
1550 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1551 out_hdr
->sadb_msg_errno
= 0;
1552 out_hdr
->sadb_msg_reserved
= 0;
1553 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1554 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1555 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
);
1560 static struct sk_buff
*compose_sadb_supported(struct sadb_msg
*orig
,
1563 struct sk_buff
*skb
;
1564 struct sadb_msg
*hdr
;
1565 int len
, auth_len
, enc_len
, i
;
1567 auth_len
= xfrm_count_auth_supported();
1569 auth_len
*= sizeof(struct sadb_alg
);
1570 auth_len
+= sizeof(struct sadb_supported
);
1573 enc_len
= xfrm_count_enc_supported();
1575 enc_len
*= sizeof(struct sadb_alg
);
1576 enc_len
+= sizeof(struct sadb_supported
);
1579 len
= enc_len
+ auth_len
+ sizeof(struct sadb_msg
);
1581 skb
= alloc_skb(len
+ 16, allocation
);
1585 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(*hdr
));
1586 pfkey_hdr_dup(hdr
, orig
);
1587 hdr
->sadb_msg_errno
= 0;
1588 hdr
->sadb_msg_len
= len
/ sizeof(uint64_t);
1591 struct sadb_supported
*sp
;
1592 struct sadb_alg
*ap
;
1594 sp
= (struct sadb_supported
*) skb_put(skb
, auth_len
);
1595 ap
= (struct sadb_alg
*) (sp
+ 1);
1597 sp
->sadb_supported_len
= auth_len
/ sizeof(uint64_t);
1598 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_AUTH
;
1600 for (i
= 0; ; i
++) {
1601 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
1604 if (aalg
->available
)
1610 struct sadb_supported
*sp
;
1611 struct sadb_alg
*ap
;
1613 sp
= (struct sadb_supported
*) skb_put(skb
, enc_len
);
1614 ap
= (struct sadb_alg
*) (sp
+ 1);
1616 sp
->sadb_supported_len
= enc_len
/ sizeof(uint64_t);
1617 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_ENCRYPT
;
1619 for (i
= 0; ; i
++) {
1620 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
1623 if (ealg
->available
)
1632 static int pfkey_register(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1634 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1635 struct sk_buff
*supp_skb
;
1637 if (hdr
->sadb_msg_satype
> SADB_SATYPE_MAX
)
1640 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
) {
1641 if (pfk
->registered
&(1<<hdr
->sadb_msg_satype
))
1643 pfk
->registered
|= (1<<hdr
->sadb_msg_satype
);
1648 supp_skb
= compose_sadb_supported(hdr
, GFP_KERNEL
);
1650 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
)
1651 pfk
->registered
&= ~(1<<hdr
->sadb_msg_satype
);
1656 pfkey_broadcast(supp_skb
, GFP_KERNEL
, BROADCAST_REGISTERED
, sk
);
1661 static int key_notify_sa_flush(struct km_event
*c
)
1663 struct sk_buff
*skb
;
1664 struct sadb_msg
*hdr
;
1666 skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
1669 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
1670 hdr
->sadb_msg_satype
= pfkey_proto2satype(c
->data
.proto
);
1671 hdr
->sadb_msg_type
= SADB_FLUSH
;
1672 hdr
->sadb_msg_seq
= c
->seq
;
1673 hdr
->sadb_msg_pid
= c
->pid
;
1674 hdr
->sadb_msg_version
= PF_KEY_V2
;
1675 hdr
->sadb_msg_errno
= (uint8_t) 0;
1676 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
1678 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
1683 static int pfkey_flush(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1687 struct xfrm_audit audit_info
;
1690 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1694 audit_info
.loginuid
= audit_get_loginuid(current
->audit_context
);
1695 audit_info
.secid
= 0;
1696 err
= xfrm_state_flush(proto
, &audit_info
);
1699 c
.data
.proto
= proto
;
1700 c
.seq
= hdr
->sadb_msg_seq
;
1701 c
.pid
= hdr
->sadb_msg_pid
;
1702 c
.event
= XFRM_MSG_FLUSHSA
;
1703 km_state_notify(NULL
, &c
);
1708 struct pfkey_dump_data
1710 struct sk_buff
*skb
;
1711 struct sadb_msg
*hdr
;
1715 static int dump_sa(struct xfrm_state
*x
, int count
, void *ptr
)
1717 struct pfkey_dump_data
*data
= ptr
;
1718 struct sk_buff
*out_skb
;
1719 struct sadb_msg
*out_hdr
;
1721 out_skb
= pfkey_xfrm_state2msg(x
, 1, 3);
1722 if (IS_ERR(out_skb
))
1723 return PTR_ERR(out_skb
);
1725 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1726 out_hdr
->sadb_msg_version
= data
->hdr
->sadb_msg_version
;
1727 out_hdr
->sadb_msg_type
= SADB_DUMP
;
1728 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1729 out_hdr
->sadb_msg_errno
= 0;
1730 out_hdr
->sadb_msg_reserved
= 0;
1731 out_hdr
->sadb_msg_seq
= count
;
1732 out_hdr
->sadb_msg_pid
= data
->hdr
->sadb_msg_pid
;
1733 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, data
->sk
);
1737 static int pfkey_dump(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1740 struct pfkey_dump_data data
= { .skb
= skb
, .hdr
= hdr
, .sk
= sk
};
1742 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1746 return xfrm_state_walk(proto
, dump_sa
, &data
);
1749 static int pfkey_promisc(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1751 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1752 int satype
= hdr
->sadb_msg_satype
;
1754 if (hdr
->sadb_msg_len
== (sizeof(*hdr
) / sizeof(uint64_t))) {
1755 /* XXX we mangle packet... */
1756 hdr
->sadb_msg_errno
= 0;
1757 if (satype
!= 0 && satype
!= 1)
1759 pfk
->promisc
= satype
;
1761 pfkey_broadcast(skb_clone(skb
, GFP_KERNEL
), GFP_KERNEL
, BROADCAST_ALL
, NULL
);
1765 static int check_reqid(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
1768 u32 reqid
= *(u32
*)ptr
;
1770 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1771 if (xp
->xfrm_vec
[i
].reqid
== reqid
)
1777 static u32
gen_reqid(void)
1780 static u32 reqid
= IPSEC_MANUAL_REQID_MAX
;
1786 reqid
= IPSEC_MANUAL_REQID_MAX
+1;
1787 if (xfrm_policy_walk(XFRM_POLICY_TYPE_MAIN
, check_reqid
,
1788 (void*)&reqid
) != -EEXIST
)
1790 } while (reqid
!= start
);
1795 parse_ipsecrequest(struct xfrm_policy
*xp
, struct sadb_x_ipsecrequest
*rq
)
1797 struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ xp
->xfrm_nr
;
1798 struct sockaddr_in
*sin
;
1799 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1800 struct sockaddr_in6
*sin6
;
1804 if (xp
->xfrm_nr
>= XFRM_MAX_DEPTH
)
1807 if (rq
->sadb_x_ipsecrequest_mode
== 0)
1810 t
->id
.proto
= rq
->sadb_x_ipsecrequest_proto
; /* XXX check proto */
1811 if ((mode
= pfkey_mode_to_xfrm(rq
->sadb_x_ipsecrequest_mode
)) < 0)
1814 if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_USE
)
1816 else if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_UNIQUE
) {
1817 t
->reqid
= rq
->sadb_x_ipsecrequest_reqid
;
1818 if (t
->reqid
> IPSEC_MANUAL_REQID_MAX
)
1820 if (!t
->reqid
&& !(t
->reqid
= gen_reqid()))
1824 /* addresses present only in tunnel mode */
1825 if (t
->mode
== XFRM_MODE_TUNNEL
) {
1826 struct sockaddr
*sa
;
1827 sa
= (struct sockaddr
*)(rq
+1);
1828 switch(sa
->sa_family
) {
1830 sin
= (struct sockaddr_in
*)sa
;
1831 t
->saddr
.a4
= sin
->sin_addr
.s_addr
;
1833 if (sin
->sin_family
!= AF_INET
)
1835 t
->id
.daddr
.a4
= sin
->sin_addr
.s_addr
;
1837 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1839 sin6
= (struct sockaddr_in6
*)sa
;
1840 memcpy(t
->saddr
.a6
, &sin6
->sin6_addr
, sizeof(struct in6_addr
));
1842 if (sin6
->sin6_family
!= AF_INET6
)
1844 memcpy(t
->id
.daddr
.a6
, &sin6
->sin6_addr
, sizeof(struct in6_addr
));
1850 t
->encap_family
= sa
->sa_family
;
1852 t
->encap_family
= xp
->family
;
1854 /* No way to set this via kame pfkey */
1855 t
->aalgos
= t
->ealgos
= t
->calgos
= ~0;
1861 parse_ipsecrequests(struct xfrm_policy
*xp
, struct sadb_x_policy
*pol
)
1864 int len
= pol
->sadb_x_policy_len
*8 - sizeof(struct sadb_x_policy
);
1865 struct sadb_x_ipsecrequest
*rq
= (void*)(pol
+1);
1867 while (len
>= sizeof(struct sadb_x_ipsecrequest
)) {
1868 if ((err
= parse_ipsecrequest(xp
, rq
)) < 0)
1870 len
-= rq
->sadb_x_ipsecrequest_len
;
1871 rq
= (void*)((u8
*)rq
+ rq
->sadb_x_ipsecrequest_len
);
1876 static inline int pfkey_xfrm_policy2sec_ctx_size(struct xfrm_policy
*xp
)
1878 struct xfrm_sec_ctx
*xfrm_ctx
= xp
->security
;
1881 int len
= sizeof(struct sadb_x_sec_ctx
);
1882 len
+= xfrm_ctx
->ctx_len
;
1883 return PFKEY_ALIGN8(len
);
1888 static int pfkey_xfrm_policy2msg_size(struct xfrm_policy
*xp
)
1890 struct xfrm_tmpl
*t
;
1891 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
1895 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1896 t
= xp
->xfrm_vec
+ i
;
1897 socklen
+= (t
->encap_family
== AF_INET
?
1898 sizeof(struct sockaddr_in
) :
1899 sizeof(struct sockaddr_in6
));
1902 return sizeof(struct sadb_msg
) +
1903 (sizeof(struct sadb_lifetime
) * 3) +
1904 (sizeof(struct sadb_address
) * 2) +
1905 (sockaddr_size
* 2) +
1906 sizeof(struct sadb_x_policy
) +
1907 (xp
->xfrm_nr
* sizeof(struct sadb_x_ipsecrequest
)) +
1909 pfkey_xfrm_policy2sec_ctx_size(xp
);
1912 static struct sk_buff
* pfkey_xfrm_policy2msg_prep(struct xfrm_policy
*xp
)
1914 struct sk_buff
*skb
;
1917 size
= pfkey_xfrm_policy2msg_size(xp
);
1919 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
1921 return ERR_PTR(-ENOBUFS
);
1926 static int pfkey_xfrm_policy2msg(struct sk_buff
*skb
, struct xfrm_policy
*xp
, int dir
)
1928 struct sadb_msg
*hdr
;
1929 struct sadb_address
*addr
;
1930 struct sadb_lifetime
*lifetime
;
1931 struct sadb_x_policy
*pol
;
1932 struct sockaddr_in
*sin
;
1933 struct sadb_x_sec_ctx
*sec_ctx
;
1934 struct xfrm_sec_ctx
*xfrm_ctx
;
1935 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1936 struct sockaddr_in6
*sin6
;
1940 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
1941 int socklen
= (xp
->family
== AF_INET
?
1942 sizeof(struct sockaddr_in
) :
1943 sizeof(struct sockaddr_in6
));
1945 size
= pfkey_xfrm_policy2msg_size(xp
);
1947 /* call should fill header later */
1948 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
1949 memset(hdr
, 0, size
); /* XXX do we need this ? */
1952 addr
= (struct sadb_address
*) skb_put(skb
,
1953 sizeof(struct sadb_address
)+sockaddr_size
);
1954 addr
->sadb_address_len
=
1955 (sizeof(struct sadb_address
)+sockaddr_size
)/
1957 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
1958 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
1959 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_s
;
1960 addr
->sadb_address_reserved
= 0;
1962 if (xp
->family
== AF_INET
) {
1963 sin
= (struct sockaddr_in
*) (addr
+ 1);
1964 sin
->sin_family
= AF_INET
;
1965 sin
->sin_addr
.s_addr
= xp
->selector
.saddr
.a4
;
1966 sin
->sin_port
= xp
->selector
.sport
;
1967 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
1969 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1970 else if (xp
->family
== AF_INET6
) {
1971 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
1972 sin6
->sin6_family
= AF_INET6
;
1973 sin6
->sin6_port
= xp
->selector
.sport
;
1974 sin6
->sin6_flowinfo
= 0;
1975 memcpy(&sin6
->sin6_addr
, xp
->selector
.saddr
.a6
,
1976 sizeof(struct in6_addr
));
1977 sin6
->sin6_scope_id
= 0;
1984 addr
= (struct sadb_address
*) skb_put(skb
,
1985 sizeof(struct sadb_address
)+sockaddr_size
);
1986 addr
->sadb_address_len
=
1987 (sizeof(struct sadb_address
)+sockaddr_size
)/
1989 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
1990 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
1991 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_d
;
1992 addr
->sadb_address_reserved
= 0;
1993 if (xp
->family
== AF_INET
) {
1994 sin
= (struct sockaddr_in
*) (addr
+ 1);
1995 sin
->sin_family
= AF_INET
;
1996 sin
->sin_addr
.s_addr
= xp
->selector
.daddr
.a4
;
1997 sin
->sin_port
= xp
->selector
.dport
;
1998 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
2000 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2001 else if (xp
->family
== AF_INET6
) {
2002 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
2003 sin6
->sin6_family
= AF_INET6
;
2004 sin6
->sin6_port
= xp
->selector
.dport
;
2005 sin6
->sin6_flowinfo
= 0;
2006 memcpy(&sin6
->sin6_addr
, xp
->selector
.daddr
.a6
,
2007 sizeof(struct in6_addr
));
2008 sin6
->sin6_scope_id
= 0;
2015 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2016 sizeof(struct sadb_lifetime
));
2017 lifetime
->sadb_lifetime_len
=
2018 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2019 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
2020 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.hard_packet_limit
);
2021 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.hard_byte_limit
);
2022 lifetime
->sadb_lifetime_addtime
= xp
->lft
.hard_add_expires_seconds
;
2023 lifetime
->sadb_lifetime_usetime
= xp
->lft
.hard_use_expires_seconds
;
2025 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2026 sizeof(struct sadb_lifetime
));
2027 lifetime
->sadb_lifetime_len
=
2028 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2029 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
2030 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.soft_packet_limit
);
2031 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.soft_byte_limit
);
2032 lifetime
->sadb_lifetime_addtime
= xp
->lft
.soft_add_expires_seconds
;
2033 lifetime
->sadb_lifetime_usetime
= xp
->lft
.soft_use_expires_seconds
;
2035 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2036 sizeof(struct sadb_lifetime
));
2037 lifetime
->sadb_lifetime_len
=
2038 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2039 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
2040 lifetime
->sadb_lifetime_allocations
= xp
->curlft
.packets
;
2041 lifetime
->sadb_lifetime_bytes
= xp
->curlft
.bytes
;
2042 lifetime
->sadb_lifetime_addtime
= xp
->curlft
.add_time
;
2043 lifetime
->sadb_lifetime_usetime
= xp
->curlft
.use_time
;
2045 pol
= (struct sadb_x_policy
*) skb_put(skb
, sizeof(struct sadb_x_policy
));
2046 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
2047 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
2048 pol
->sadb_x_policy_type
= IPSEC_POLICY_DISCARD
;
2049 if (xp
->action
== XFRM_POLICY_ALLOW
) {
2051 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
2053 pol
->sadb_x_policy_type
= IPSEC_POLICY_NONE
;
2055 pol
->sadb_x_policy_dir
= dir
+1;
2056 pol
->sadb_x_policy_id
= xp
->index
;
2057 pol
->sadb_x_policy_priority
= xp
->priority
;
2059 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
2060 struct sadb_x_ipsecrequest
*rq
;
2061 struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ i
;
2065 req_size
= sizeof(struct sadb_x_ipsecrequest
);
2066 if (t
->mode
== XFRM_MODE_TUNNEL
)
2067 req_size
+= ((t
->encap_family
== AF_INET
?
2068 sizeof(struct sockaddr_in
) :
2069 sizeof(struct sockaddr_in6
)) * 2);
2072 rq
= (void*)skb_put(skb
, req_size
);
2073 pol
->sadb_x_policy_len
+= req_size
/8;
2074 memset(rq
, 0, sizeof(*rq
));
2075 rq
->sadb_x_ipsecrequest_len
= req_size
;
2076 rq
->sadb_x_ipsecrequest_proto
= t
->id
.proto
;
2077 if ((mode
= pfkey_mode_from_xfrm(t
->mode
)) < 0)
2079 rq
->sadb_x_ipsecrequest_mode
= mode
;
2080 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_REQUIRE
;
2082 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_UNIQUE
;
2084 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_USE
;
2085 rq
->sadb_x_ipsecrequest_reqid
= t
->reqid
;
2086 if (t
->mode
== XFRM_MODE_TUNNEL
) {
2087 switch (t
->encap_family
) {
2089 sin
= (void*)(rq
+1);
2090 sin
->sin_family
= AF_INET
;
2091 sin
->sin_addr
.s_addr
= t
->saddr
.a4
;
2093 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
2095 sin
->sin_family
= AF_INET
;
2096 sin
->sin_addr
.s_addr
= t
->id
.daddr
.a4
;
2098 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
2100 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2102 sin6
= (void*)(rq
+1);
2103 sin6
->sin6_family
= AF_INET6
;
2104 sin6
->sin6_port
= 0;
2105 sin6
->sin6_flowinfo
= 0;
2106 memcpy(&sin6
->sin6_addr
, t
->saddr
.a6
,
2107 sizeof(struct in6_addr
));
2108 sin6
->sin6_scope_id
= 0;
2111 sin6
->sin6_family
= AF_INET6
;
2112 sin6
->sin6_port
= 0;
2113 sin6
->sin6_flowinfo
= 0;
2114 memcpy(&sin6
->sin6_addr
, t
->id
.daddr
.a6
,
2115 sizeof(struct in6_addr
));
2116 sin6
->sin6_scope_id
= 0;
2125 /* security context */
2126 if ((xfrm_ctx
= xp
->security
)) {
2127 int ctx_size
= pfkey_xfrm_policy2sec_ctx_size(xp
);
2129 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
, ctx_size
);
2130 sec_ctx
->sadb_x_sec_len
= ctx_size
/ sizeof(uint64_t);
2131 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
2132 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
2133 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
2134 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
2135 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
2139 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
2140 hdr
->sadb_msg_reserved
= atomic_read(&xp
->refcnt
);
2145 static int key_notify_policy(struct xfrm_policy
*xp
, int dir
, struct km_event
*c
)
2147 struct sk_buff
*out_skb
;
2148 struct sadb_msg
*out_hdr
;
2151 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2152 if (IS_ERR(out_skb
)) {
2153 err
= PTR_ERR(out_skb
);
2156 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2160 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2161 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
2163 if (c
->data
.byid
&& c
->event
== XFRM_MSG_DELPOLICY
)
2164 out_hdr
->sadb_msg_type
= SADB_X_SPDDELETE2
;
2166 out_hdr
->sadb_msg_type
= event2poltype(c
->event
);
2167 out_hdr
->sadb_msg_errno
= 0;
2168 out_hdr
->sadb_msg_seq
= c
->seq
;
2169 out_hdr
->sadb_msg_pid
= c
->pid
;
2170 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
2176 static int pfkey_spdadd(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2179 struct sadb_lifetime
*lifetime
;
2180 struct sadb_address
*sa
;
2181 struct sadb_x_policy
*pol
;
2182 struct xfrm_policy
*xp
;
2184 struct sadb_x_sec_ctx
*sec_ctx
;
2186 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2187 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2188 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2191 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2192 if (pol
->sadb_x_policy_type
> IPSEC_POLICY_IPSEC
)
2194 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2197 xp
= xfrm_policy_alloc(GFP_KERNEL
);
2201 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
2202 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
2203 xp
->priority
= pol
->sadb_x_policy_priority
;
2205 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2206 xp
->family
= pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.saddr
);
2211 xp
->selector
.family
= xp
->family
;
2212 xp
->selector
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2213 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2214 xp
->selector
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2215 if (xp
->selector
.sport
)
2216 xp
->selector
.sport_mask
= htons(0xffff);
2218 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
2219 pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.daddr
);
2220 xp
->selector
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2222 /* Amusing, we set this twice. KAME apps appear to set same value
2223 * in both addresses.
2225 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2227 xp
->selector
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2228 if (xp
->selector
.dport
)
2229 xp
->selector
.dport_mask
= htons(0xffff);
2231 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
2232 if (sec_ctx
!= NULL
) {
2233 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2240 err
= security_xfrm_policy_alloc(xp
, uctx
);
2247 xp
->lft
.soft_byte_limit
= XFRM_INF
;
2248 xp
->lft
.hard_byte_limit
= XFRM_INF
;
2249 xp
->lft
.soft_packet_limit
= XFRM_INF
;
2250 xp
->lft
.hard_packet_limit
= XFRM_INF
;
2251 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1]) != NULL
) {
2252 xp
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2253 xp
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2254 xp
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2255 xp
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2257 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1]) != NULL
) {
2258 xp
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2259 xp
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2260 xp
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2261 xp
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2264 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
2265 (err
= parse_ipsecrequests(xp
, pol
)) < 0)
2268 err
= xfrm_policy_insert(pol
->sadb_x_policy_dir
-1, xp
,
2269 hdr
->sadb_msg_type
!= SADB_X_SPDUPDATE
);
2271 xfrm_audit_log(audit_get_loginuid(current
->audit_context
), 0,
2272 AUDIT_MAC_IPSEC_ADDSPD
, err
? 0 : 1, xp
, NULL
);
2277 if (hdr
->sadb_msg_type
== SADB_X_SPDUPDATE
)
2278 c
.event
= XFRM_MSG_UPDPOLICY
;
2280 c
.event
= XFRM_MSG_NEWPOLICY
;
2282 c
.seq
= hdr
->sadb_msg_seq
;
2283 c
.pid
= hdr
->sadb_msg_pid
;
2285 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2290 security_xfrm_policy_free(xp
);
2295 static int pfkey_spddelete(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2298 struct sadb_address
*sa
;
2299 struct sadb_x_policy
*pol
;
2300 struct xfrm_policy
*xp
, tmp
;
2301 struct xfrm_selector sel
;
2303 struct sadb_x_sec_ctx
*sec_ctx
;
2305 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2306 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2307 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2310 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2311 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2314 memset(&sel
, 0, sizeof(sel
));
2316 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2317 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2318 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2319 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2320 sel
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2322 sel
.sport_mask
= htons(0xffff);
2324 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
2325 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2326 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2327 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2328 sel
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2330 sel
.dport_mask
= htons(0xffff);
2332 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
2333 memset(&tmp
, 0, sizeof(struct xfrm_policy
));
2335 if (sec_ctx
!= NULL
) {
2336 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2341 err
= security_xfrm_policy_alloc(&tmp
, uctx
);
2348 xp
= xfrm_policy_bysel_ctx(XFRM_POLICY_TYPE_MAIN
, pol
->sadb_x_policy_dir
-1,
2349 &sel
, tmp
.security
, 1, &err
);
2350 security_xfrm_policy_free(&tmp
);
2355 xfrm_audit_log(audit_get_loginuid(current
->audit_context
), 0,
2356 AUDIT_MAC_IPSEC_DELSPD
, err
? 0 : 1, xp
, NULL
);
2361 c
.seq
= hdr
->sadb_msg_seq
;
2362 c
.pid
= hdr
->sadb_msg_pid
;
2363 c
.event
= XFRM_MSG_DELPOLICY
;
2364 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2371 static int key_pol_get_resp(struct sock
*sk
, struct xfrm_policy
*xp
, struct sadb_msg
*hdr
, int dir
)
2374 struct sk_buff
*out_skb
;
2375 struct sadb_msg
*out_hdr
;
2378 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2379 if (IS_ERR(out_skb
)) {
2380 err
= PTR_ERR(out_skb
);
2383 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2387 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2388 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
2389 out_hdr
->sadb_msg_type
= hdr
->sadb_msg_type
;
2390 out_hdr
->sadb_msg_satype
= 0;
2391 out_hdr
->sadb_msg_errno
= 0;
2392 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
2393 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
2394 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
);
2401 #ifdef CONFIG_NET_KEY_MIGRATE
2402 static int pfkey_sockaddr_pair_size(sa_family_t family
)
2406 return PFKEY_ALIGN8(sizeof(struct sockaddr_in
) * 2);
2407 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2409 return PFKEY_ALIGN8(sizeof(struct sockaddr_in6
) * 2);
2417 static int parse_sockaddr_pair(struct sadb_x_ipsecrequest
*rq
,
2418 xfrm_address_t
*saddr
, xfrm_address_t
*daddr
,
2421 struct sockaddr
*sa
= (struct sockaddr
*)(rq
+ 1);
2422 if (rq
->sadb_x_ipsecrequest_len
<
2423 pfkey_sockaddr_pair_size(sa
->sa_family
))
2426 switch (sa
->sa_family
) {
2429 struct sockaddr_in
*sin
;
2430 sin
= (struct sockaddr_in
*)sa
;
2431 if ((sin
+1)->sin_family
!= AF_INET
)
2433 memcpy(&saddr
->a4
, &sin
->sin_addr
, sizeof(saddr
->a4
));
2435 memcpy(&daddr
->a4
, &sin
->sin_addr
, sizeof(daddr
->a4
));
2439 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2442 struct sockaddr_in6
*sin6
;
2443 sin6
= (struct sockaddr_in6
*)sa
;
2444 if ((sin6
+1)->sin6_family
!= AF_INET6
)
2446 memcpy(&saddr
->a6
, &sin6
->sin6_addr
,
2449 memcpy(&daddr
->a6
, &sin6
->sin6_addr
,
2462 static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest
*rq1
, int len
,
2463 struct xfrm_migrate
*m
)
2466 struct sadb_x_ipsecrequest
*rq2
;
2469 if (len
<= sizeof(struct sadb_x_ipsecrequest
) ||
2470 len
< rq1
->sadb_x_ipsecrequest_len
)
2474 err
= parse_sockaddr_pair(rq1
, &m
->old_saddr
, &m
->old_daddr
,
2479 rq2
= (struct sadb_x_ipsecrequest
*)((u8
*)rq1
+ rq1
->sadb_x_ipsecrequest_len
);
2480 len
-= rq1
->sadb_x_ipsecrequest_len
;
2482 if (len
<= sizeof(struct sadb_x_ipsecrequest
) ||
2483 len
< rq2
->sadb_x_ipsecrequest_len
)
2487 err
= parse_sockaddr_pair(rq2
, &m
->new_saddr
, &m
->new_daddr
,
2492 if (rq1
->sadb_x_ipsecrequest_proto
!= rq2
->sadb_x_ipsecrequest_proto
||
2493 rq1
->sadb_x_ipsecrequest_mode
!= rq2
->sadb_x_ipsecrequest_mode
||
2494 rq1
->sadb_x_ipsecrequest_reqid
!= rq2
->sadb_x_ipsecrequest_reqid
)
2497 m
->proto
= rq1
->sadb_x_ipsecrequest_proto
;
2498 if ((mode
= pfkey_mode_to_xfrm(rq1
->sadb_x_ipsecrequest_mode
)) < 0)
2501 m
->reqid
= rq1
->sadb_x_ipsecrequest_reqid
;
2503 return ((int)(rq1
->sadb_x_ipsecrequest_len
+
2504 rq2
->sadb_x_ipsecrequest_len
));
2507 static int pfkey_migrate(struct sock
*sk
, struct sk_buff
*skb
,
2508 struct sadb_msg
*hdr
, void **ext_hdrs
)
2510 int i
, len
, ret
, err
= -EINVAL
;
2512 struct sadb_address
*sa
;
2513 struct sadb_x_policy
*pol
;
2514 struct sadb_x_ipsecrequest
*rq
;
2515 struct xfrm_selector sel
;
2516 struct xfrm_migrate m
[XFRM_MAX_DEPTH
];
2518 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
- 1],
2519 ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1]) ||
2520 !ext_hdrs
[SADB_X_EXT_POLICY
- 1]) {
2525 pol
= ext_hdrs
[SADB_X_EXT_POLICY
- 1];
2531 if (pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
) {
2536 dir
= pol
->sadb_x_policy_dir
- 1;
2537 memset(&sel
, 0, sizeof(sel
));
2539 /* set source address info of selector */
2540 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
- 1];
2541 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2542 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2543 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2544 sel
.sport
= ((struct sockaddr_in
*)(sa
+ 1))->sin_port
;
2546 sel
.sport_mask
= htons(0xffff);
2548 /* set destination address info of selector */
2549 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1],
2550 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2551 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2552 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2553 sel
.dport
= ((struct sockaddr_in
*)(sa
+ 1))->sin_port
;
2555 sel
.dport_mask
= htons(0xffff);
2557 rq
= (struct sadb_x_ipsecrequest
*)(pol
+ 1);
2559 /* extract ipsecrequests */
2561 len
= pol
->sadb_x_policy_len
* 8 - sizeof(struct sadb_x_policy
);
2563 while (len
> 0 && i
< XFRM_MAX_DEPTH
) {
2564 ret
= ipsecrequests_to_migrate(rq
, len
, &m
[i
]);
2569 rq
= (struct sadb_x_ipsecrequest
*)((u8
*)rq
+ ret
);
2575 if (!i
|| len
> 0) {
2580 return xfrm_migrate(&sel
, dir
, XFRM_POLICY_TYPE_MAIN
, m
, i
);
2586 static int pfkey_migrate(struct sock
*sk
, struct sk_buff
*skb
,
2587 struct sadb_msg
*hdr
, void **ext_hdrs
)
2589 return -ENOPROTOOPT
;
2594 static int pfkey_spdget(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2597 int err
= 0, delete;
2598 struct sadb_x_policy
*pol
;
2599 struct xfrm_policy
*xp
;
2602 if ((pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1]) == NULL
)
2605 dir
= xfrm_policy_id2dir(pol
->sadb_x_policy_id
);
2606 if (dir
>= XFRM_POLICY_MAX
)
2609 delete = (hdr
->sadb_msg_type
== SADB_X_SPDDELETE2
);
2610 xp
= xfrm_policy_byid(XFRM_POLICY_TYPE_MAIN
, dir
, pol
->sadb_x_policy_id
,
2616 xfrm_audit_log(audit_get_loginuid(current
->audit_context
), 0,
2617 AUDIT_MAC_IPSEC_DELSPD
, err
? 0 : 1, xp
, NULL
);
2621 c
.seq
= hdr
->sadb_msg_seq
;
2622 c
.pid
= hdr
->sadb_msg_pid
;
2624 c
.event
= XFRM_MSG_DELPOLICY
;
2625 km_policy_notify(xp
, dir
, &c
);
2627 err
= key_pol_get_resp(sk
, xp
, hdr
, dir
);
2635 static int dump_sp(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
2637 struct pfkey_dump_data
*data
= ptr
;
2638 struct sk_buff
*out_skb
;
2639 struct sadb_msg
*out_hdr
;
2642 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2643 if (IS_ERR(out_skb
))
2644 return PTR_ERR(out_skb
);
2646 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2650 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2651 out_hdr
->sadb_msg_version
= data
->hdr
->sadb_msg_version
;
2652 out_hdr
->sadb_msg_type
= SADB_X_SPDDUMP
;
2653 out_hdr
->sadb_msg_satype
= SADB_SATYPE_UNSPEC
;
2654 out_hdr
->sadb_msg_errno
= 0;
2655 out_hdr
->sadb_msg_seq
= count
;
2656 out_hdr
->sadb_msg_pid
= data
->hdr
->sadb_msg_pid
;
2657 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, data
->sk
);
2661 static int pfkey_spddump(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2663 struct pfkey_dump_data data
= { .skb
= skb
, .hdr
= hdr
, .sk
= sk
};
2665 return xfrm_policy_walk(XFRM_POLICY_TYPE_MAIN
, dump_sp
, &data
);
2668 static int key_notify_policy_flush(struct km_event
*c
)
2670 struct sk_buff
*skb_out
;
2671 struct sadb_msg
*hdr
;
2673 skb_out
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
2676 hdr
= (struct sadb_msg
*) skb_put(skb_out
, sizeof(struct sadb_msg
));
2677 hdr
->sadb_msg_type
= SADB_X_SPDFLUSH
;
2678 hdr
->sadb_msg_seq
= c
->seq
;
2679 hdr
->sadb_msg_pid
= c
->pid
;
2680 hdr
->sadb_msg_version
= PF_KEY_V2
;
2681 hdr
->sadb_msg_errno
= (uint8_t) 0;
2682 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
2683 pfkey_broadcast(skb_out
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
2688 static int pfkey_spdflush(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2691 struct xfrm_audit audit_info
;
2694 audit_info
.loginuid
= audit_get_loginuid(current
->audit_context
);
2695 audit_info
.secid
= 0;
2696 err
= xfrm_policy_flush(XFRM_POLICY_TYPE_MAIN
, &audit_info
);
2699 c
.data
.type
= XFRM_POLICY_TYPE_MAIN
;
2700 c
.event
= XFRM_MSG_FLUSHPOLICY
;
2701 c
.pid
= hdr
->sadb_msg_pid
;
2702 c
.seq
= hdr
->sadb_msg_seq
;
2703 km_policy_notify(NULL
, 0, &c
);
2708 typedef int (*pfkey_handler
)(struct sock
*sk
, struct sk_buff
*skb
,
2709 struct sadb_msg
*hdr
, void **ext_hdrs
);
2710 static pfkey_handler pfkey_funcs
[SADB_MAX
+ 1] = {
2711 [SADB_RESERVED
] = pfkey_reserved
,
2712 [SADB_GETSPI
] = pfkey_getspi
,
2713 [SADB_UPDATE
] = pfkey_add
,
2714 [SADB_ADD
] = pfkey_add
,
2715 [SADB_DELETE
] = pfkey_delete
,
2716 [SADB_GET
] = pfkey_get
,
2717 [SADB_ACQUIRE
] = pfkey_acquire
,
2718 [SADB_REGISTER
] = pfkey_register
,
2719 [SADB_EXPIRE
] = NULL
,
2720 [SADB_FLUSH
] = pfkey_flush
,
2721 [SADB_DUMP
] = pfkey_dump
,
2722 [SADB_X_PROMISC
] = pfkey_promisc
,
2723 [SADB_X_PCHANGE
] = NULL
,
2724 [SADB_X_SPDUPDATE
] = pfkey_spdadd
,
2725 [SADB_X_SPDADD
] = pfkey_spdadd
,
2726 [SADB_X_SPDDELETE
] = pfkey_spddelete
,
2727 [SADB_X_SPDGET
] = pfkey_spdget
,
2728 [SADB_X_SPDACQUIRE
] = NULL
,
2729 [SADB_X_SPDDUMP
] = pfkey_spddump
,
2730 [SADB_X_SPDFLUSH
] = pfkey_spdflush
,
2731 [SADB_X_SPDSETIDX
] = pfkey_spdadd
,
2732 [SADB_X_SPDDELETE2
] = pfkey_spdget
,
2733 [SADB_X_MIGRATE
] = pfkey_migrate
,
2736 static int pfkey_process(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
)
2738 void *ext_hdrs
[SADB_EXT_MAX
];
2741 pfkey_broadcast(skb_clone(skb
, GFP_KERNEL
), GFP_KERNEL
,
2742 BROADCAST_PROMISC_ONLY
, NULL
);
2744 memset(ext_hdrs
, 0, sizeof(ext_hdrs
));
2745 err
= parse_exthdrs(skb
, hdr
, ext_hdrs
);
2748 if (pfkey_funcs
[hdr
->sadb_msg_type
])
2749 err
= pfkey_funcs
[hdr
->sadb_msg_type
](sk
, skb
, hdr
, ext_hdrs
);
2754 static struct sadb_msg
*pfkey_get_base_msg(struct sk_buff
*skb
, int *errp
)
2756 struct sadb_msg
*hdr
= NULL
;
2758 if (skb
->len
< sizeof(*hdr
)) {
2761 hdr
= (struct sadb_msg
*) skb
->data
;
2762 if (hdr
->sadb_msg_version
!= PF_KEY_V2
||
2763 hdr
->sadb_msg_reserved
!= 0 ||
2764 (hdr
->sadb_msg_type
<= SADB_RESERVED
||
2765 hdr
->sadb_msg_type
> SADB_MAX
)) {
2768 } else if (hdr
->sadb_msg_len
!= (skb
->len
/
2769 sizeof(uint64_t)) ||
2770 hdr
->sadb_msg_len
< (sizeof(struct sadb_msg
) /
2771 sizeof(uint64_t))) {
2781 static inline int aalg_tmpl_set(struct xfrm_tmpl
*t
, struct xfrm_algo_desc
*d
)
2783 return t
->aalgos
& (1 << d
->desc
.sadb_alg_id
);
2786 static inline int ealg_tmpl_set(struct xfrm_tmpl
*t
, struct xfrm_algo_desc
*d
)
2788 return t
->ealgos
& (1 << d
->desc
.sadb_alg_id
);
2791 static int count_ah_combs(struct xfrm_tmpl
*t
)
2795 for (i
= 0; ; i
++) {
2796 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2799 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2800 sz
+= sizeof(struct sadb_comb
);
2802 return sz
+ sizeof(struct sadb_prop
);
2805 static int count_esp_combs(struct xfrm_tmpl
*t
)
2809 for (i
= 0; ; i
++) {
2810 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2814 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2817 for (k
= 1; ; k
++) {
2818 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2822 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2823 sz
+= sizeof(struct sadb_comb
);
2826 return sz
+ sizeof(struct sadb_prop
);
2829 static void dump_ah_combs(struct sk_buff
*skb
, struct xfrm_tmpl
*t
)
2831 struct sadb_prop
*p
;
2834 p
= (struct sadb_prop
*)skb_put(skb
, sizeof(struct sadb_prop
));
2835 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2836 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2837 p
->sadb_prop_replay
= 32;
2838 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2840 for (i
= 0; ; i
++) {
2841 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2845 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
) {
2846 struct sadb_comb
*c
;
2847 c
= (struct sadb_comb
*)skb_put(skb
, sizeof(struct sadb_comb
));
2848 memset(c
, 0, sizeof(*c
));
2849 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2850 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2851 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2852 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2853 c
->sadb_comb_hard_addtime
= 24*60*60;
2854 c
->sadb_comb_soft_addtime
= 20*60*60;
2855 c
->sadb_comb_hard_usetime
= 8*60*60;
2856 c
->sadb_comb_soft_usetime
= 7*60*60;
2861 static void dump_esp_combs(struct sk_buff
*skb
, struct xfrm_tmpl
*t
)
2863 struct sadb_prop
*p
;
2866 p
= (struct sadb_prop
*)skb_put(skb
, sizeof(struct sadb_prop
));
2867 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2868 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2869 p
->sadb_prop_replay
= 32;
2870 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2873 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2877 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2880 for (k
= 1; ; k
++) {
2881 struct sadb_comb
*c
;
2882 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2885 if (!(aalg_tmpl_set(t
, aalg
) && aalg
->available
))
2887 c
= (struct sadb_comb
*)skb_put(skb
, sizeof(struct sadb_comb
));
2888 memset(c
, 0, sizeof(*c
));
2889 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2890 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2891 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2892 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2893 c
->sadb_comb_encrypt
= ealg
->desc
.sadb_alg_id
;
2894 c
->sadb_comb_encrypt_minbits
= ealg
->desc
.sadb_alg_minbits
;
2895 c
->sadb_comb_encrypt_maxbits
= ealg
->desc
.sadb_alg_maxbits
;
2896 c
->sadb_comb_hard_addtime
= 24*60*60;
2897 c
->sadb_comb_soft_addtime
= 20*60*60;
2898 c
->sadb_comb_hard_usetime
= 8*60*60;
2899 c
->sadb_comb_soft_usetime
= 7*60*60;
2904 static int key_notify_policy_expire(struct xfrm_policy
*xp
, struct km_event
*c
)
2909 static int key_notify_sa_expire(struct xfrm_state
*x
, struct km_event
*c
)
2911 struct sk_buff
*out_skb
;
2912 struct sadb_msg
*out_hdr
;
2916 hard
= c
->data
.hard
;
2922 out_skb
= pfkey_xfrm_state2msg(x
, 0, hsc
);
2923 if (IS_ERR(out_skb
))
2924 return PTR_ERR(out_skb
);
2926 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2927 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
2928 out_hdr
->sadb_msg_type
= SADB_EXPIRE
;
2929 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
2930 out_hdr
->sadb_msg_errno
= 0;
2931 out_hdr
->sadb_msg_reserved
= 0;
2932 out_hdr
->sadb_msg_seq
= 0;
2933 out_hdr
->sadb_msg_pid
= 0;
2935 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
2939 static int pfkey_send_notify(struct xfrm_state
*x
, struct km_event
*c
)
2942 case XFRM_MSG_EXPIRE
:
2943 return key_notify_sa_expire(x
, c
);
2944 case XFRM_MSG_DELSA
:
2945 case XFRM_MSG_NEWSA
:
2946 case XFRM_MSG_UPDSA
:
2947 return key_notify_sa(x
, c
);
2948 case XFRM_MSG_FLUSHSA
:
2949 return key_notify_sa_flush(c
);
2950 case XFRM_MSG_NEWAE
: /* not yet supported */
2953 printk("pfkey: Unknown SA event %d\n", c
->event
);
2960 static int pfkey_send_policy_notify(struct xfrm_policy
*xp
, int dir
, struct km_event
*c
)
2962 if (xp
&& xp
->type
!= XFRM_POLICY_TYPE_MAIN
)
2966 case XFRM_MSG_POLEXPIRE
:
2967 return key_notify_policy_expire(xp
, c
);
2968 case XFRM_MSG_DELPOLICY
:
2969 case XFRM_MSG_NEWPOLICY
:
2970 case XFRM_MSG_UPDPOLICY
:
2971 return key_notify_policy(xp
, dir
, c
);
2972 case XFRM_MSG_FLUSHPOLICY
:
2973 if (c
->data
.type
!= XFRM_POLICY_TYPE_MAIN
)
2975 return key_notify_policy_flush(c
);
2977 printk("pfkey: Unknown policy event %d\n", c
->event
);
2984 static u32
get_acqseq(void)
2988 static DEFINE_SPINLOCK(acqseq_lock
);
2990 spin_lock_bh(&acqseq_lock
);
2991 res
= (++acqseq
? : ++acqseq
);
2992 spin_unlock_bh(&acqseq_lock
);
2996 static int pfkey_send_acquire(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*xp
, int dir
)
2998 struct sk_buff
*skb
;
2999 struct sadb_msg
*hdr
;
3000 struct sadb_address
*addr
;
3001 struct sadb_x_policy
*pol
;
3002 struct sockaddr_in
*sin
;
3003 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3004 struct sockaddr_in6
*sin6
;
3008 struct sadb_x_sec_ctx
*sec_ctx
;
3009 struct xfrm_sec_ctx
*xfrm_ctx
;
3012 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
3016 size
= sizeof(struct sadb_msg
) +
3017 (sizeof(struct sadb_address
) * 2) +
3018 (sockaddr_size
* 2) +
3019 sizeof(struct sadb_x_policy
);
3021 if (x
->id
.proto
== IPPROTO_AH
)
3022 size
+= count_ah_combs(t
);
3023 else if (x
->id
.proto
== IPPROTO_ESP
)
3024 size
+= count_esp_combs(t
);
3026 if ((xfrm_ctx
= x
->security
)) {
3027 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
3028 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
3031 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
3035 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
3036 hdr
->sadb_msg_version
= PF_KEY_V2
;
3037 hdr
->sadb_msg_type
= SADB_ACQUIRE
;
3038 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
3039 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3040 hdr
->sadb_msg_errno
= 0;
3041 hdr
->sadb_msg_reserved
= 0;
3042 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3043 hdr
->sadb_msg_pid
= 0;
3046 addr
= (struct sadb_address
*) skb_put(skb
,
3047 sizeof(struct sadb_address
)+sockaddr_size
);
3048 addr
->sadb_address_len
=
3049 (sizeof(struct sadb_address
)+sockaddr_size
)/
3051 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3052 addr
->sadb_address_proto
= 0;
3053 addr
->sadb_address_reserved
= 0;
3054 if (x
->props
.family
== AF_INET
) {
3055 addr
->sadb_address_prefixlen
= 32;
3057 sin
= (struct sockaddr_in
*) (addr
+ 1);
3058 sin
->sin_family
= AF_INET
;
3059 sin
->sin_addr
.s_addr
= x
->props
.saddr
.a4
;
3061 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3063 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3064 else if (x
->props
.family
== AF_INET6
) {
3065 addr
->sadb_address_prefixlen
= 128;
3067 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
3068 sin6
->sin6_family
= AF_INET6
;
3069 sin6
->sin6_port
= 0;
3070 sin6
->sin6_flowinfo
= 0;
3071 memcpy(&sin6
->sin6_addr
,
3072 x
->props
.saddr
.a6
, sizeof(struct in6_addr
));
3073 sin6
->sin6_scope_id
= 0;
3080 addr
= (struct sadb_address
*) skb_put(skb
,
3081 sizeof(struct sadb_address
)+sockaddr_size
);
3082 addr
->sadb_address_len
=
3083 (sizeof(struct sadb_address
)+sockaddr_size
)/
3085 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3086 addr
->sadb_address_proto
= 0;
3087 addr
->sadb_address_reserved
= 0;
3088 if (x
->props
.family
== AF_INET
) {
3089 addr
->sadb_address_prefixlen
= 32;
3091 sin
= (struct sockaddr_in
*) (addr
+ 1);
3092 sin
->sin_family
= AF_INET
;
3093 sin
->sin_addr
.s_addr
= x
->id
.daddr
.a4
;
3095 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3097 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3098 else if (x
->props
.family
== AF_INET6
) {
3099 addr
->sadb_address_prefixlen
= 128;
3101 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
3102 sin6
->sin6_family
= AF_INET6
;
3103 sin6
->sin6_port
= 0;
3104 sin6
->sin6_flowinfo
= 0;
3105 memcpy(&sin6
->sin6_addr
,
3106 x
->id
.daddr
.a6
, sizeof(struct in6_addr
));
3107 sin6
->sin6_scope_id
= 0;
3113 pol
= (struct sadb_x_policy
*) skb_put(skb
, sizeof(struct sadb_x_policy
));
3114 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
3115 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
3116 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
3117 pol
->sadb_x_policy_dir
= dir
+1;
3118 pol
->sadb_x_policy_id
= xp
->index
;
3120 /* Set sadb_comb's. */
3121 if (x
->id
.proto
== IPPROTO_AH
)
3122 dump_ah_combs(skb
, t
);
3123 else if (x
->id
.proto
== IPPROTO_ESP
)
3124 dump_esp_combs(skb
, t
);
3126 /* security context */
3128 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
,
3129 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
3130 sec_ctx
->sadb_x_sec_len
=
3131 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
3132 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
3133 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
3134 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
3135 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
3136 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
3140 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
3143 static struct xfrm_policy
*pfkey_compile_policy(struct sock
*sk
, int opt
,
3144 u8
*data
, int len
, int *dir
)
3146 struct xfrm_policy
*xp
;
3147 struct sadb_x_policy
*pol
= (struct sadb_x_policy
*)data
;
3148 struct sadb_x_sec_ctx
*sec_ctx
;
3150 switch (sk
->sk_family
) {
3152 if (opt
!= IP_IPSEC_POLICY
) {
3157 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3159 if (opt
!= IPV6_IPSEC_POLICY
) {
3172 if (len
< sizeof(struct sadb_x_policy
) ||
3173 pol
->sadb_x_policy_len
*8 > len
||
3174 pol
->sadb_x_policy_type
> IPSEC_POLICY_BYPASS
||
3175 (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
> IPSEC_DIR_OUTBOUND
))
3178 xp
= xfrm_policy_alloc(GFP_ATOMIC
);
3184 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
3185 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
3187 xp
->lft
.soft_byte_limit
= XFRM_INF
;
3188 xp
->lft
.hard_byte_limit
= XFRM_INF
;
3189 xp
->lft
.soft_packet_limit
= XFRM_INF
;
3190 xp
->lft
.hard_packet_limit
= XFRM_INF
;
3191 xp
->family
= sk
->sk_family
;
3194 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
3195 (*dir
= parse_ipsecrequests(xp
, pol
)) < 0)
3198 /* security context too */
3199 if (len
>= (pol
->sadb_x_policy_len
*8 +
3200 sizeof(struct sadb_x_sec_ctx
))) {
3201 char *p
= (char *)pol
;
3202 struct xfrm_user_sec_ctx
*uctx
;
3204 p
+= pol
->sadb_x_policy_len
*8;
3205 sec_ctx
= (struct sadb_x_sec_ctx
*)p
;
3206 if (len
< pol
->sadb_x_policy_len
*8 +
3207 sec_ctx
->sadb_x_sec_len
) {
3211 if ((*dir
= verify_sec_ctx_len(p
)))
3213 uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
3214 *dir
= security_xfrm_policy_alloc(xp
, uctx
);
3221 *dir
= pol
->sadb_x_policy_dir
-1;
3225 security_xfrm_policy_free(xp
);
3230 static int pfkey_send_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
3232 struct sk_buff
*skb
;
3233 struct sadb_msg
*hdr
;
3235 struct sadb_address
*addr
;
3236 struct sadb_x_nat_t_port
*n_port
;
3237 struct sockaddr_in
*sin
;
3238 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3239 struct sockaddr_in6
*sin6
;
3243 __u8 satype
= (x
->id
.proto
== IPPROTO_ESP
? SADB_SATYPE_ESP
: 0);
3244 struct xfrm_encap_tmpl
*natt
= NULL
;
3246 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
3258 /* Build an SADB_X_NAT_T_NEW_MAPPING message:
3260 * HDR | SA | ADDRESS_SRC (old addr) | NAT_T_SPORT (old port) |
3261 * ADDRESS_DST (new addr) | NAT_T_DPORT (new port)
3264 size
= sizeof(struct sadb_msg
) +
3265 sizeof(struct sadb_sa
) +
3266 (sizeof(struct sadb_address
) * 2) +
3267 (sockaddr_size
* 2) +
3268 (sizeof(struct sadb_x_nat_t_port
) * 2);
3270 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
3274 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
3275 hdr
->sadb_msg_version
= PF_KEY_V2
;
3276 hdr
->sadb_msg_type
= SADB_X_NAT_T_NEW_MAPPING
;
3277 hdr
->sadb_msg_satype
= satype
;
3278 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3279 hdr
->sadb_msg_errno
= 0;
3280 hdr
->sadb_msg_reserved
= 0;
3281 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3282 hdr
->sadb_msg_pid
= 0;
3285 sa
= (struct sadb_sa
*) skb_put(skb
, sizeof(struct sadb_sa
));
3286 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
3287 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
3288 sa
->sadb_sa_spi
= x
->id
.spi
;
3289 sa
->sadb_sa_replay
= 0;
3290 sa
->sadb_sa_state
= 0;
3291 sa
->sadb_sa_auth
= 0;
3292 sa
->sadb_sa_encrypt
= 0;
3293 sa
->sadb_sa_flags
= 0;
3295 /* ADDRESS_SRC (old addr) */
3296 addr
= (struct sadb_address
*)
3297 skb_put(skb
, sizeof(struct sadb_address
)+sockaddr_size
);
3298 addr
->sadb_address_len
=
3299 (sizeof(struct sadb_address
)+sockaddr_size
)/
3301 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3302 addr
->sadb_address_proto
= 0;
3303 addr
->sadb_address_reserved
= 0;
3304 if (x
->props
.family
== AF_INET
) {
3305 addr
->sadb_address_prefixlen
= 32;
3307 sin
= (struct sockaddr_in
*) (addr
+ 1);
3308 sin
->sin_family
= AF_INET
;
3309 sin
->sin_addr
.s_addr
= x
->props
.saddr
.a4
;
3311 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3313 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3314 else if (x
->props
.family
== AF_INET6
) {
3315 addr
->sadb_address_prefixlen
= 128;
3317 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
3318 sin6
->sin6_family
= AF_INET6
;
3319 sin6
->sin6_port
= 0;
3320 sin6
->sin6_flowinfo
= 0;
3321 memcpy(&sin6
->sin6_addr
,
3322 x
->props
.saddr
.a6
, sizeof(struct in6_addr
));
3323 sin6
->sin6_scope_id
= 0;
3329 /* NAT_T_SPORT (old port) */
3330 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
3331 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3332 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
3333 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
3334 n_port
->sadb_x_nat_t_port_reserved
= 0;
3336 /* ADDRESS_DST (new addr) */
3337 addr
= (struct sadb_address
*)
3338 skb_put(skb
, sizeof(struct sadb_address
)+sockaddr_size
);
3339 addr
->sadb_address_len
=
3340 (sizeof(struct sadb_address
)+sockaddr_size
)/
3342 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3343 addr
->sadb_address_proto
= 0;
3344 addr
->sadb_address_reserved
= 0;
3345 if (x
->props
.family
== AF_INET
) {
3346 addr
->sadb_address_prefixlen
= 32;
3348 sin
= (struct sockaddr_in
*) (addr
+ 1);
3349 sin
->sin_family
= AF_INET
;
3350 sin
->sin_addr
.s_addr
= ipaddr
->a4
;
3352 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3354 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3355 else if (x
->props
.family
== AF_INET6
) {
3356 addr
->sadb_address_prefixlen
= 128;
3358 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
3359 sin6
->sin6_family
= AF_INET6
;
3360 sin6
->sin6_port
= 0;
3361 sin6
->sin6_flowinfo
= 0;
3362 memcpy(&sin6
->sin6_addr
, &ipaddr
->a6
, sizeof(struct in6_addr
));
3363 sin6
->sin6_scope_id
= 0;
3369 /* NAT_T_DPORT (new port) */
3370 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
3371 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3372 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
3373 n_port
->sadb_x_nat_t_port_port
= sport
;
3374 n_port
->sadb_x_nat_t_port_reserved
= 0;
3376 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
3379 #ifdef CONFIG_NET_KEY_MIGRATE
3380 static int set_sadb_address(struct sk_buff
*skb
, int sasize
, int type
,
3381 struct xfrm_selector
*sel
)
3383 struct sadb_address
*addr
;
3384 struct sockaddr_in
*sin
;
3385 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3386 struct sockaddr_in6
*sin6
;
3388 addr
= (struct sadb_address
*)skb_put(skb
, sizeof(struct sadb_address
) + sasize
);
3389 addr
->sadb_address_len
= (sizeof(struct sadb_address
) + sasize
)/8;
3390 addr
->sadb_address_exttype
= type
;
3391 addr
->sadb_address_proto
= sel
->proto
;
3392 addr
->sadb_address_reserved
= 0;
3395 case SADB_EXT_ADDRESS_SRC
:
3396 if (sel
->family
== AF_INET
) {
3397 addr
->sadb_address_prefixlen
= sel
->prefixlen_s
;
3398 sin
= (struct sockaddr_in
*)(addr
+ 1);
3399 sin
->sin_family
= AF_INET
;
3400 memcpy(&sin
->sin_addr
.s_addr
, &sel
->saddr
,
3401 sizeof(sin
->sin_addr
.s_addr
));
3403 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3405 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3406 else if (sel
->family
== AF_INET6
) {
3407 addr
->sadb_address_prefixlen
= sel
->prefixlen_s
;
3408 sin6
= (struct sockaddr_in6
*)(addr
+ 1);
3409 sin6
->sin6_family
= AF_INET6
;
3410 sin6
->sin6_port
= 0;
3411 sin6
->sin6_flowinfo
= 0;
3412 sin6
->sin6_scope_id
= 0;
3413 memcpy(&sin6
->sin6_addr
.s6_addr
, &sel
->saddr
,
3414 sizeof(sin6
->sin6_addr
.s6_addr
));
3418 case SADB_EXT_ADDRESS_DST
:
3419 if (sel
->family
== AF_INET
) {
3420 addr
->sadb_address_prefixlen
= sel
->prefixlen_d
;
3421 sin
= (struct sockaddr_in
*)(addr
+ 1);
3422 sin
->sin_family
= AF_INET
;
3423 memcpy(&sin
->sin_addr
.s_addr
, &sel
->daddr
,
3424 sizeof(sin
->sin_addr
.s_addr
));
3426 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3428 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3429 else if (sel
->family
== AF_INET6
) {
3430 addr
->sadb_address_prefixlen
= sel
->prefixlen_d
;
3431 sin6
= (struct sockaddr_in6
*)(addr
+ 1);
3432 sin6
->sin6_family
= AF_INET6
;
3433 sin6
->sin6_port
= 0;
3434 sin6
->sin6_flowinfo
= 0;
3435 sin6
->sin6_scope_id
= 0;
3436 memcpy(&sin6
->sin6_addr
.s6_addr
, &sel
->daddr
,
3437 sizeof(sin6
->sin6_addr
.s6_addr
));
3448 static int set_ipsecrequest(struct sk_buff
*skb
,
3449 uint8_t proto
, uint8_t mode
, int level
,
3450 uint32_t reqid
, uint8_t family
,
3451 xfrm_address_t
*src
, xfrm_address_t
*dst
)
3453 struct sadb_x_ipsecrequest
*rq
;
3454 struct sockaddr_in
*sin
;
3455 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3456 struct sockaddr_in6
*sin6
;
3460 size_req
= sizeof(struct sadb_x_ipsecrequest
) +
3461 pfkey_sockaddr_pair_size(family
);
3463 rq
= (struct sadb_x_ipsecrequest
*)skb_put(skb
, size_req
);
3464 memset(rq
, 0, size_req
);
3465 rq
->sadb_x_ipsecrequest_len
= size_req
;
3466 rq
->sadb_x_ipsecrequest_proto
= proto
;
3467 rq
->sadb_x_ipsecrequest_mode
= mode
;
3468 rq
->sadb_x_ipsecrequest_level
= level
;
3469 rq
->sadb_x_ipsecrequest_reqid
= reqid
;
3473 sin
= (struct sockaddr_in
*)(rq
+ 1);
3474 sin
->sin_family
= AF_INET
;
3475 memcpy(&sin
->sin_addr
.s_addr
, src
,
3476 sizeof(sin
->sin_addr
.s_addr
));
3478 sin
->sin_family
= AF_INET
;
3479 memcpy(&sin
->sin_addr
.s_addr
, dst
,
3480 sizeof(sin
->sin_addr
.s_addr
));
3482 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3484 sin6
= (struct sockaddr_in6
*)(rq
+ 1);
3485 sin6
->sin6_family
= AF_INET6
;
3486 sin6
->sin6_port
= 0;
3487 sin6
->sin6_flowinfo
= 0;
3488 sin6
->sin6_scope_id
= 0;
3489 memcpy(&sin6
->sin6_addr
.s6_addr
, src
,
3490 sizeof(sin6
->sin6_addr
.s6_addr
));
3492 sin6
->sin6_family
= AF_INET6
;
3493 sin6
->sin6_port
= 0;
3494 sin6
->sin6_flowinfo
= 0;
3495 sin6
->sin6_scope_id
= 0;
3496 memcpy(&sin6
->sin6_addr
.s6_addr
, dst
,
3497 sizeof(sin6
->sin6_addr
.s6_addr
));
3508 #ifdef CONFIG_NET_KEY_MIGRATE
3509 static int pfkey_send_migrate(struct xfrm_selector
*sel
, u8 dir
, u8 type
,
3510 struct xfrm_migrate
*m
, int num_bundles
)
3516 struct sk_buff
*skb
;
3517 struct sadb_msg
*hdr
;
3518 struct sadb_x_policy
*pol
;
3519 struct xfrm_migrate
*mp
;
3521 if (type
!= XFRM_POLICY_TYPE_MAIN
)
3524 if (num_bundles
<= 0 || num_bundles
> XFRM_MAX_DEPTH
)
3528 sasize_sel
= pfkey_sockaddr_size(sel
->family
);
3531 size
+= (sizeof(struct sadb_address
) + sasize_sel
) * 2;
3534 size_pol
+= sizeof(struct sadb_x_policy
);
3537 for (i
= 0, mp
= m
; i
< num_bundles
; i
++, mp
++) {
3538 /* old locator pair */
3539 size_pol
+= sizeof(struct sadb_x_ipsecrequest
) +
3540 pfkey_sockaddr_pair_size(mp
->old_family
);
3541 /* new locator pair */
3542 size_pol
+= sizeof(struct sadb_x_ipsecrequest
) +
3543 pfkey_sockaddr_pair_size(mp
->new_family
);
3546 size
+= sizeof(struct sadb_msg
) + size_pol
;
3549 skb
= alloc_skb(size
, GFP_ATOMIC
);
3553 hdr
= (struct sadb_msg
*)skb_put(skb
, sizeof(struct sadb_msg
));
3554 hdr
->sadb_msg_version
= PF_KEY_V2
;
3555 hdr
->sadb_msg_type
= SADB_X_MIGRATE
;
3556 hdr
->sadb_msg_satype
= pfkey_proto2satype(m
->proto
);
3557 hdr
->sadb_msg_len
= size
/ 8;
3558 hdr
->sadb_msg_errno
= 0;
3559 hdr
->sadb_msg_reserved
= 0;
3560 hdr
->sadb_msg_seq
= 0;
3561 hdr
->sadb_msg_pid
= 0;
3564 set_sadb_address(skb
, sasize_sel
, SADB_EXT_ADDRESS_SRC
, sel
);
3567 set_sadb_address(skb
, sasize_sel
, SADB_EXT_ADDRESS_DST
, sel
);
3569 /* policy information */
3570 pol
= (struct sadb_x_policy
*)skb_put(skb
, sizeof(struct sadb_x_policy
));
3571 pol
->sadb_x_policy_len
= size_pol
/ 8;
3572 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
3573 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
3574 pol
->sadb_x_policy_dir
= dir
+ 1;
3575 pol
->sadb_x_policy_id
= 0;
3576 pol
->sadb_x_policy_priority
= 0;
3578 for (i
= 0, mp
= m
; i
< num_bundles
; i
++, mp
++) {
3579 /* old ipsecrequest */
3580 int mode
= pfkey_mode_from_xfrm(mp
->mode
);
3583 if (set_ipsecrequest(skb
, mp
->proto
, mode
,
3584 (mp
->reqid
? IPSEC_LEVEL_UNIQUE
: IPSEC_LEVEL_REQUIRE
),
3585 mp
->reqid
, mp
->old_family
,
3586 &mp
->old_saddr
, &mp
->old_daddr
) < 0) {
3590 /* new ipsecrequest */
3591 if (set_ipsecrequest(skb
, mp
->proto
, mode
,
3592 (mp
->reqid
? IPSEC_LEVEL_UNIQUE
: IPSEC_LEVEL_REQUIRE
),
3593 mp
->reqid
, mp
->new_family
,
3594 &mp
->new_saddr
, &mp
->new_daddr
) < 0) {
3599 /* broadcast migrate message to sockets */
3600 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
3605 static int pfkey_send_migrate(struct xfrm_selector
*sel
, u8 dir
, u8 type
,
3606 struct xfrm_migrate
*m
, int num_bundles
)
3608 return -ENOPROTOOPT
;
3612 static int pfkey_sendmsg(struct kiocb
*kiocb
,
3613 struct socket
*sock
, struct msghdr
*msg
, size_t len
)
3615 struct sock
*sk
= sock
->sk
;
3616 struct sk_buff
*skb
= NULL
;
3617 struct sadb_msg
*hdr
= NULL
;
3621 if (msg
->msg_flags
& MSG_OOB
)
3625 if ((unsigned)len
> sk
->sk_sndbuf
- 32)
3629 skb
= alloc_skb(len
, GFP_KERNEL
);
3634 if (memcpy_fromiovec(skb_put(skb
,len
), msg
->msg_iov
, len
))
3637 hdr
= pfkey_get_base_msg(skb
, &err
);
3641 mutex_lock(&xfrm_cfg_mutex
);
3642 err
= pfkey_process(sk
, skb
, hdr
);
3643 mutex_unlock(&xfrm_cfg_mutex
);
3646 if (err
&& hdr
&& pfkey_error(hdr
, err
, sk
) == 0)
3654 static int pfkey_recvmsg(struct kiocb
*kiocb
,
3655 struct socket
*sock
, struct msghdr
*msg
, size_t len
,
3658 struct sock
*sk
= sock
->sk
;
3659 struct sk_buff
*skb
;
3663 if (flags
& ~(MSG_PEEK
|MSG_DONTWAIT
|MSG_TRUNC
|MSG_CMSG_COMPAT
))
3666 msg
->msg_namelen
= 0;
3667 skb
= skb_recv_datagram(sk
, flags
, flags
& MSG_DONTWAIT
, &err
);
3673 msg
->msg_flags
|= MSG_TRUNC
;
3677 skb_reset_transport_header(skb
);
3678 err
= skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
3682 sock_recv_timestamp(msg
, sk
, skb
);
3684 err
= (flags
& MSG_TRUNC
) ? skb
->len
: copied
;
3687 skb_free_datagram(sk
, skb
);
3692 static const struct proto_ops pfkey_ops
= {
3694 .owner
= THIS_MODULE
,
3695 /* Operations that make no sense on pfkey sockets. */
3696 .bind
= sock_no_bind
,
3697 .connect
= sock_no_connect
,
3698 .socketpair
= sock_no_socketpair
,
3699 .accept
= sock_no_accept
,
3700 .getname
= sock_no_getname
,
3701 .ioctl
= sock_no_ioctl
,
3702 .listen
= sock_no_listen
,
3703 .shutdown
= sock_no_shutdown
,
3704 .setsockopt
= sock_no_setsockopt
,
3705 .getsockopt
= sock_no_getsockopt
,
3706 .mmap
= sock_no_mmap
,
3707 .sendpage
= sock_no_sendpage
,
3709 /* Now the operations that really occur. */
3710 .release
= pfkey_release
,
3711 .poll
= datagram_poll
,
3712 .sendmsg
= pfkey_sendmsg
,
3713 .recvmsg
= pfkey_recvmsg
,
3716 static struct net_proto_family pfkey_family_ops
= {
3718 .create
= pfkey_create
,
3719 .owner
= THIS_MODULE
,
3722 #ifdef CONFIG_PROC_FS
3723 static int pfkey_read_proc(char *buffer
, char **start
, off_t offset
,
3724 int length
, int *eof
, void *data
)
3730 struct hlist_node
*node
;
3732 len
+= sprintf(buffer
,"sk RefCnt Rmem Wmem User Inode\n");
3734 read_lock(&pfkey_table_lock
);
3736 sk_for_each(s
, node
, &pfkey_table
) {
3737 len
+= sprintf(buffer
+len
,"%p %-6d %-6u %-6u %-6u %-6lu",
3739 atomic_read(&s
->sk_refcnt
),
3740 atomic_read(&s
->sk_rmem_alloc
),
3741 atomic_read(&s
->sk_wmem_alloc
),
3746 buffer
[len
++] = '\n';
3753 if(pos
> offset
+ length
)
3759 read_unlock(&pfkey_table_lock
);
3761 *start
= buffer
+ (offset
- begin
);
3762 len
-= (offset
- begin
);
3773 static struct xfrm_mgr pfkeyv2_mgr
=
3776 .notify
= pfkey_send_notify
,
3777 .acquire
= pfkey_send_acquire
,
3778 .compile_policy
= pfkey_compile_policy
,
3779 .new_mapping
= pfkey_send_new_mapping
,
3780 .notify_policy
= pfkey_send_policy_notify
,
3781 .migrate
= pfkey_send_migrate
,
3784 static void __exit
ipsec_pfkey_exit(void)
3786 xfrm_unregister_km(&pfkeyv2_mgr
);
3787 remove_proc_entry("net/pfkey", NULL
);
3788 sock_unregister(PF_KEY
);
3789 proto_unregister(&key_proto
);
3792 static int __init
ipsec_pfkey_init(void)
3794 int err
= proto_register(&key_proto
, 0);
3799 err
= sock_register(&pfkey_family_ops
);
3801 goto out_unregister_key_proto
;
3802 #ifdef CONFIG_PROC_FS
3804 if (create_proc_read_entry("net/pfkey", 0, NULL
, pfkey_read_proc
, NULL
) == NULL
)
3805 goto out_sock_unregister
;
3807 err
= xfrm_register_km(&pfkeyv2_mgr
);
3809 goto out_remove_proc_entry
;
3812 out_remove_proc_entry
:
3813 #ifdef CONFIG_PROC_FS
3814 remove_proc_entry("net/pfkey", NULL
);
3815 out_sock_unregister
:
3817 sock_unregister(PF_KEY
);
3818 out_unregister_key_proto
:
3819 proto_unregister(&key_proto
);
3823 module_init(ipsec_pfkey_init
);
3824 module_exit(ipsec_pfkey_exit
);
3825 MODULE_LICENSE("GPL");
3826 MODULE_ALIAS_NETPROTO(PF_KEY
);