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>
29 #include <net/net_namespace.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 net
*net
, struct socket
*sock
, int protocol
)
144 if (net
!= &init_net
)
145 return -EAFNOSUPPORT
;
147 if (!capable(CAP_NET_ADMIN
))
149 if (sock
->type
!= SOCK_RAW
)
150 return -ESOCKTNOSUPPORT
;
151 if (protocol
!= PF_KEY_V2
)
152 return -EPROTONOSUPPORT
;
155 sk
= sk_alloc(net
, PF_KEY
, GFP_KERNEL
, &key_proto
, 1);
159 sock
->ops
= &pfkey_ops
;
160 sock_init_data(sock
, sk
);
162 sk
->sk_family
= PF_KEY
;
163 sk
->sk_destruct
= pfkey_sock_destruct
;
165 atomic_inc(&pfkey_socks_nr
);
174 static int pfkey_release(struct socket
*sock
)
176 struct sock
*sk
= sock
->sk
;
185 skb_queue_purge(&sk
->sk_write_queue
);
191 static int pfkey_broadcast_one(struct sk_buff
*skb
, struct sk_buff
**skb2
,
192 gfp_t allocation
, struct sock
*sk
)
198 if (atomic_read(&skb
->users
) != 1) {
199 *skb2
= skb_clone(skb
, allocation
);
202 atomic_inc(&skb
->users
);
206 if (atomic_read(&sk
->sk_rmem_alloc
) <= sk
->sk_rcvbuf
) {
208 skb_set_owner_r(*skb2
, sk
);
209 skb_queue_tail(&sk
->sk_receive_queue
, *skb2
);
210 sk
->sk_data_ready(sk
, (*skb2
)->len
);
219 /* Send SKB to all pfkey sockets matching selected criteria. */
220 #define BROADCAST_ALL 0
221 #define BROADCAST_ONE 1
222 #define BROADCAST_REGISTERED 2
223 #define BROADCAST_PROMISC_ONLY 4
224 static int pfkey_broadcast(struct sk_buff
*skb
, gfp_t allocation
,
225 int broadcast_flags
, struct sock
*one_sk
)
228 struct hlist_node
*node
;
229 struct sk_buff
*skb2
= NULL
;
232 /* XXX Do we need something like netlink_overrun? I think
233 * XXX PF_KEY socket apps will not mind current behavior.
239 sk_for_each(sk
, node
, &pfkey_table
) {
240 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
243 /* Yes, it means that if you are meant to receive this
244 * pfkey message you receive it twice as promiscuous
248 pfkey_broadcast_one(skb
, &skb2
, allocation
, sk
);
250 /* the exact target will be processed later */
253 if (broadcast_flags
!= BROADCAST_ALL
) {
254 if (broadcast_flags
& BROADCAST_PROMISC_ONLY
)
256 if ((broadcast_flags
& BROADCAST_REGISTERED
) &&
259 if (broadcast_flags
& BROADCAST_ONE
)
263 err2
= pfkey_broadcast_one(skb
, &skb2
, allocation
, sk
);
265 /* Error is cleare after succecful sending to at least one
267 if ((broadcast_flags
& BROADCAST_REGISTERED
) && err
)
270 pfkey_unlock_table();
273 err
= pfkey_broadcast_one(skb
, &skb2
, allocation
, one_sk
);
281 static inline void pfkey_hdr_dup(struct sadb_msg
*new, struct sadb_msg
*orig
)
286 static int pfkey_error(struct sadb_msg
*orig
, int err
, struct sock
*sk
)
288 struct sk_buff
*skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_KERNEL
);
289 struct sadb_msg
*hdr
;
294 /* Woe be to the platform trying to support PFKEY yet
295 * having normal errnos outside the 1-255 range, inclusive.
298 if (err
== ERESTARTSYS
||
299 err
== ERESTARTNOHAND
||
300 err
== ERESTARTNOINTR
)
304 BUG_ON(err
<= 0 || err
>= 256);
306 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
307 pfkey_hdr_dup(hdr
, orig
);
308 hdr
->sadb_msg_errno
= (uint8_t) err
;
309 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) /
312 pfkey_broadcast(skb
, GFP_KERNEL
, BROADCAST_ONE
, sk
);
317 static u8 sadb_ext_min_len
[] = {
318 [SADB_EXT_RESERVED
] = (u8
) 0,
319 [SADB_EXT_SA
] = (u8
) sizeof(struct sadb_sa
),
320 [SADB_EXT_LIFETIME_CURRENT
] = (u8
) sizeof(struct sadb_lifetime
),
321 [SADB_EXT_LIFETIME_HARD
] = (u8
) sizeof(struct sadb_lifetime
),
322 [SADB_EXT_LIFETIME_SOFT
] = (u8
) sizeof(struct sadb_lifetime
),
323 [SADB_EXT_ADDRESS_SRC
] = (u8
) sizeof(struct sadb_address
),
324 [SADB_EXT_ADDRESS_DST
] = (u8
) sizeof(struct sadb_address
),
325 [SADB_EXT_ADDRESS_PROXY
] = (u8
) sizeof(struct sadb_address
),
326 [SADB_EXT_KEY_AUTH
] = (u8
) sizeof(struct sadb_key
),
327 [SADB_EXT_KEY_ENCRYPT
] = (u8
) sizeof(struct sadb_key
),
328 [SADB_EXT_IDENTITY_SRC
] = (u8
) sizeof(struct sadb_ident
),
329 [SADB_EXT_IDENTITY_DST
] = (u8
) sizeof(struct sadb_ident
),
330 [SADB_EXT_SENSITIVITY
] = (u8
) sizeof(struct sadb_sens
),
331 [SADB_EXT_PROPOSAL
] = (u8
) sizeof(struct sadb_prop
),
332 [SADB_EXT_SUPPORTED_AUTH
] = (u8
) sizeof(struct sadb_supported
),
333 [SADB_EXT_SUPPORTED_ENCRYPT
] = (u8
) sizeof(struct sadb_supported
),
334 [SADB_EXT_SPIRANGE
] = (u8
) sizeof(struct sadb_spirange
),
335 [SADB_X_EXT_KMPRIVATE
] = (u8
) sizeof(struct sadb_x_kmprivate
),
336 [SADB_X_EXT_POLICY
] = (u8
) sizeof(struct sadb_x_policy
),
337 [SADB_X_EXT_SA2
] = (u8
) sizeof(struct sadb_x_sa2
),
338 [SADB_X_EXT_NAT_T_TYPE
] = (u8
) sizeof(struct sadb_x_nat_t_type
),
339 [SADB_X_EXT_NAT_T_SPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
340 [SADB_X_EXT_NAT_T_DPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
341 [SADB_X_EXT_NAT_T_OA
] = (u8
) sizeof(struct sadb_address
),
342 [SADB_X_EXT_SEC_CTX
] = (u8
) sizeof(struct sadb_x_sec_ctx
),
345 /* Verify sadb_address_{len,prefixlen} against sa_family. */
346 static int verify_address_len(void *p
)
348 struct sadb_address
*sp
= p
;
349 struct sockaddr
*addr
= (struct sockaddr
*)(sp
+ 1);
350 struct sockaddr_in
*sin
;
351 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
352 struct sockaddr_in6
*sin6
;
356 switch (addr
->sa_family
) {
358 len
= DIV_ROUND_UP(sizeof(*sp
) + sizeof(*sin
), sizeof(uint64_t));
359 if (sp
->sadb_address_len
!= len
||
360 sp
->sadb_address_prefixlen
> 32)
363 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
365 len
= DIV_ROUND_UP(sizeof(*sp
) + sizeof(*sin6
), sizeof(uint64_t));
366 if (sp
->sadb_address_len
!= len
||
367 sp
->sadb_address_prefixlen
> 128)
372 /* It is user using kernel to keep track of security
373 * associations for another protocol, such as
374 * OSPF/RSVP/RIPV2/MIP. It is user's job to verify
377 * XXX Actually, association/policy database is not yet
378 * XXX able to cope with arbitrary sockaddr families.
379 * XXX When it can, remove this -EINVAL. -DaveM
388 static inline int pfkey_sec_ctx_len(struct sadb_x_sec_ctx
*sec_ctx
)
390 return DIV_ROUND_UP(sizeof(struct sadb_x_sec_ctx
) +
391 sec_ctx
->sadb_x_ctx_len
,
395 static inline int verify_sec_ctx_len(void *p
)
397 struct sadb_x_sec_ctx
*sec_ctx
= (struct sadb_x_sec_ctx
*)p
;
400 if (sec_ctx
->sadb_x_ctx_len
> PAGE_SIZE
)
403 len
= pfkey_sec_ctx_len(sec_ctx
);
405 if (sec_ctx
->sadb_x_sec_len
!= len
)
411 static inline struct xfrm_user_sec_ctx
*pfkey_sadb2xfrm_user_sec_ctx(struct sadb_x_sec_ctx
*sec_ctx
)
413 struct xfrm_user_sec_ctx
*uctx
= NULL
;
414 int ctx_size
= sec_ctx
->sadb_x_ctx_len
;
416 uctx
= kmalloc((sizeof(*uctx
)+ctx_size
), GFP_KERNEL
);
421 uctx
->len
= pfkey_sec_ctx_len(sec_ctx
);
422 uctx
->exttype
= sec_ctx
->sadb_x_sec_exttype
;
423 uctx
->ctx_doi
= sec_ctx
->sadb_x_ctx_doi
;
424 uctx
->ctx_alg
= sec_ctx
->sadb_x_ctx_alg
;
425 uctx
->ctx_len
= sec_ctx
->sadb_x_ctx_len
;
426 memcpy(uctx
+ 1, sec_ctx
+ 1,
432 static int present_and_same_family(struct sadb_address
*src
,
433 struct sadb_address
*dst
)
435 struct sockaddr
*s_addr
, *d_addr
;
440 s_addr
= (struct sockaddr
*)(src
+ 1);
441 d_addr
= (struct sockaddr
*)(dst
+ 1);
442 if (s_addr
->sa_family
!= d_addr
->sa_family
)
444 if (s_addr
->sa_family
!= AF_INET
445 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
446 && s_addr
->sa_family
!= AF_INET6
454 static int parse_exthdrs(struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
456 char *p
= (char *) hdr
;
462 struct sadb_ext
*ehdr
= (struct sadb_ext
*) p
;
466 ext_len
= ehdr
->sadb_ext_len
;
467 ext_len
*= sizeof(uint64_t);
468 ext_type
= ehdr
->sadb_ext_type
;
469 if (ext_len
< sizeof(uint64_t) ||
471 ext_type
== SADB_EXT_RESERVED
)
474 if (ext_type
<= SADB_EXT_MAX
) {
475 int min
= (int) sadb_ext_min_len
[ext_type
];
478 if (ext_hdrs
[ext_type
-1] != NULL
)
480 if (ext_type
== SADB_EXT_ADDRESS_SRC
||
481 ext_type
== SADB_EXT_ADDRESS_DST
||
482 ext_type
== SADB_EXT_ADDRESS_PROXY
||
483 ext_type
== SADB_X_EXT_NAT_T_OA
) {
484 if (verify_address_len(p
))
487 if (ext_type
== SADB_X_EXT_SEC_CTX
) {
488 if (verify_sec_ctx_len(p
))
491 ext_hdrs
[ext_type
-1] = p
;
501 pfkey_satype2proto(uint8_t satype
)
504 case SADB_SATYPE_UNSPEC
:
505 return IPSEC_PROTO_ANY
;
508 case SADB_SATYPE_ESP
:
510 case SADB_X_SATYPE_IPCOMP
:
520 pfkey_proto2satype(uint16_t proto
)
524 return SADB_SATYPE_AH
;
526 return SADB_SATYPE_ESP
;
528 return SADB_X_SATYPE_IPCOMP
;
536 /* BTW, this scheme means that there is no way with PFKEY2 sockets to
537 * say specifically 'just raw sockets' as we encode them as 255.
540 static uint8_t pfkey_proto_to_xfrm(uint8_t proto
)
542 return (proto
== IPSEC_PROTO_ANY
? 0 : proto
);
545 static uint8_t pfkey_proto_from_xfrm(uint8_t proto
)
547 return (proto
? proto
: IPSEC_PROTO_ANY
);
550 static int pfkey_sadb_addr2xfrm_addr(struct sadb_address
*addr
,
551 xfrm_address_t
*xaddr
)
553 switch (((struct sockaddr
*)(addr
+ 1))->sa_family
) {
556 ((struct sockaddr_in
*)(addr
+ 1))->sin_addr
.s_addr
;
558 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
561 &((struct sockaddr_in6
*)(addr
+ 1))->sin6_addr
,
562 sizeof(struct in6_addr
));
571 static struct xfrm_state
*pfkey_xfrm_state_lookup(struct sadb_msg
*hdr
, void **ext_hdrs
)
574 struct sadb_address
*addr
;
576 unsigned short family
;
577 xfrm_address_t
*xaddr
;
579 sa
= (struct sadb_sa
*) ext_hdrs
[SADB_EXT_SA
-1];
583 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
587 /* sadb_address_len should be checked by caller */
588 addr
= (struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
592 family
= ((struct sockaddr
*)(addr
+ 1))->sa_family
;
595 xaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(addr
+ 1))->sin_addr
;
597 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
599 xaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(addr
+ 1))->sin6_addr
;
609 return xfrm_state_lookup(xaddr
, sa
->sadb_sa_spi
, proto
, family
);
612 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
614 pfkey_sockaddr_size(sa_family_t family
)
618 return PFKEY_ALIGN8(sizeof(struct sockaddr_in
));
619 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
621 return PFKEY_ALIGN8(sizeof(struct sockaddr_in6
));
629 static inline int pfkey_mode_from_xfrm(int mode
)
632 case XFRM_MODE_TRANSPORT
:
633 return IPSEC_MODE_TRANSPORT
;
634 case XFRM_MODE_TUNNEL
:
635 return IPSEC_MODE_TUNNEL
;
637 return IPSEC_MODE_BEET
;
643 static inline int pfkey_mode_to_xfrm(int mode
)
646 case IPSEC_MODE_ANY
: /*XXX*/
647 case IPSEC_MODE_TRANSPORT
:
648 return XFRM_MODE_TRANSPORT
;
649 case IPSEC_MODE_TUNNEL
:
650 return XFRM_MODE_TUNNEL
;
651 case IPSEC_MODE_BEET
:
652 return XFRM_MODE_BEET
;
658 static struct sk_buff
* pfkey_xfrm_state2msg(struct xfrm_state
*x
, int add_keys
, int hsc
)
661 struct sadb_msg
*hdr
;
663 struct sadb_lifetime
*lifetime
;
664 struct sadb_address
*addr
;
665 struct sadb_key
*key
;
666 struct sadb_x_sa2
*sa2
;
667 struct sockaddr_in
*sin
;
668 struct sadb_x_sec_ctx
*sec_ctx
;
669 struct xfrm_sec_ctx
*xfrm_ctx
;
671 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
672 struct sockaddr_in6
*sin6
;
675 int auth_key_size
= 0;
676 int encrypt_key_size
= 0;
678 struct xfrm_encap_tmpl
*natt
= NULL
;
681 /* address family check */
682 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
684 return ERR_PTR(-EINVAL
);
686 /* base, SA, (lifetime (HSC),) address(SD), (address(P),)
687 key(AE), (identity(SD),) (sensitivity)> */
688 size
= sizeof(struct sadb_msg
) +sizeof(struct sadb_sa
) +
689 sizeof(struct sadb_lifetime
) +
690 ((hsc
& 1) ? sizeof(struct sadb_lifetime
) : 0) +
691 ((hsc
& 2) ? sizeof(struct sadb_lifetime
) : 0) +
692 sizeof(struct sadb_address
)*2 +
694 sizeof(struct sadb_x_sa2
);
696 if ((xfrm_ctx
= x
->security
)) {
697 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
698 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
701 /* identity & sensitivity */
703 if ((x
->props
.family
== AF_INET
&&
704 x
->sel
.saddr
.a4
!= x
->props
.saddr
.a4
)
705 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
706 || (x
->props
.family
== AF_INET6
&&
707 memcmp (x
->sel
.saddr
.a6
, x
->props
.saddr
.a6
, sizeof (struct in6_addr
)))
710 size
+= sizeof(struct sadb_address
) + sockaddr_size
;
713 if (x
->aalg
&& x
->aalg
->alg_key_len
) {
715 PFKEY_ALIGN8((x
->aalg
->alg_key_len
+ 7) / 8);
716 size
+= sizeof(struct sadb_key
) + auth_key_size
;
718 if (x
->ealg
&& x
->ealg
->alg_key_len
) {
720 PFKEY_ALIGN8((x
->ealg
->alg_key_len
+7) / 8);
721 size
+= sizeof(struct sadb_key
) + encrypt_key_size
;
727 if (natt
&& natt
->encap_type
) {
728 size
+= sizeof(struct sadb_x_nat_t_type
);
729 size
+= sizeof(struct sadb_x_nat_t_port
);
730 size
+= sizeof(struct sadb_x_nat_t_port
);
733 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
735 return ERR_PTR(-ENOBUFS
);
737 /* call should fill header later */
738 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
739 memset(hdr
, 0, size
); /* XXX do we need this ? */
740 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
743 sa
= (struct sadb_sa
*) skb_put(skb
, sizeof(struct sadb_sa
));
744 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
745 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
746 sa
->sadb_sa_spi
= x
->id
.spi
;
747 sa
->sadb_sa_replay
= x
->props
.replay_window
;
748 switch (x
->km
.state
) {
749 case XFRM_STATE_VALID
:
750 sa
->sadb_sa_state
= x
->km
.dying
?
751 SADB_SASTATE_DYING
: SADB_SASTATE_MATURE
;
754 sa
->sadb_sa_state
= SADB_SASTATE_LARVAL
;
757 sa
->sadb_sa_state
= SADB_SASTATE_DEAD
;
760 sa
->sadb_sa_auth
= 0;
762 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byname(x
->aalg
->alg_name
, 0);
763 sa
->sadb_sa_auth
= a
? a
->desc
.sadb_alg_id
: 0;
765 sa
->sadb_sa_encrypt
= 0;
766 BUG_ON(x
->ealg
&& x
->calg
);
768 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byname(x
->ealg
->alg_name
, 0);
769 sa
->sadb_sa_encrypt
= a
? a
->desc
.sadb_alg_id
: 0;
771 /* KAME compatible: sadb_sa_encrypt is overloaded with calg id */
773 struct xfrm_algo_desc
*a
= xfrm_calg_get_byname(x
->calg
->alg_name
, 0);
774 sa
->sadb_sa_encrypt
= a
? a
->desc
.sadb_alg_id
: 0;
777 sa
->sadb_sa_flags
= 0;
778 if (x
->props
.flags
& XFRM_STATE_NOECN
)
779 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOECN
;
780 if (x
->props
.flags
& XFRM_STATE_DECAP_DSCP
)
781 sa
->sadb_sa_flags
|= SADB_SAFLAGS_DECAP_DSCP
;
782 if (x
->props
.flags
& XFRM_STATE_NOPMTUDISC
)
783 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOPMTUDISC
;
787 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
788 sizeof(struct sadb_lifetime
));
789 lifetime
->sadb_lifetime_len
=
790 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
791 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
792 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.hard_packet_limit
);
793 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.hard_byte_limit
);
794 lifetime
->sadb_lifetime_addtime
= x
->lft
.hard_add_expires_seconds
;
795 lifetime
->sadb_lifetime_usetime
= x
->lft
.hard_use_expires_seconds
;
799 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
800 sizeof(struct sadb_lifetime
));
801 lifetime
->sadb_lifetime_len
=
802 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
803 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
804 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.soft_packet_limit
);
805 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.soft_byte_limit
);
806 lifetime
->sadb_lifetime_addtime
= x
->lft
.soft_add_expires_seconds
;
807 lifetime
->sadb_lifetime_usetime
= x
->lft
.soft_use_expires_seconds
;
810 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
811 sizeof(struct sadb_lifetime
));
812 lifetime
->sadb_lifetime_len
=
813 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
814 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
815 lifetime
->sadb_lifetime_allocations
= x
->curlft
.packets
;
816 lifetime
->sadb_lifetime_bytes
= x
->curlft
.bytes
;
817 lifetime
->sadb_lifetime_addtime
= x
->curlft
.add_time
;
818 lifetime
->sadb_lifetime_usetime
= x
->curlft
.use_time
;
820 addr
= (struct sadb_address
*) skb_put(skb
,
821 sizeof(struct sadb_address
)+sockaddr_size
);
822 addr
->sadb_address_len
=
823 (sizeof(struct sadb_address
)+sockaddr_size
)/
825 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
826 /* "if the ports are non-zero, then the sadb_address_proto field,
827 normally zero, MUST be filled in with the transport
828 protocol's number." - RFC2367 */
829 addr
->sadb_address_proto
= 0;
830 addr
->sadb_address_reserved
= 0;
831 if (x
->props
.family
== AF_INET
) {
832 addr
->sadb_address_prefixlen
= 32;
834 sin
= (struct sockaddr_in
*) (addr
+ 1);
835 sin
->sin_family
= AF_INET
;
836 sin
->sin_addr
.s_addr
= x
->props
.saddr
.a4
;
838 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
840 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
841 else if (x
->props
.family
== AF_INET6
) {
842 addr
->sadb_address_prefixlen
= 128;
844 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
845 sin6
->sin6_family
= AF_INET6
;
847 sin6
->sin6_flowinfo
= 0;
848 memcpy(&sin6
->sin6_addr
, x
->props
.saddr
.a6
,
849 sizeof(struct in6_addr
));
850 sin6
->sin6_scope_id
= 0;
857 addr
= (struct sadb_address
*) skb_put(skb
,
858 sizeof(struct sadb_address
)+sockaddr_size
);
859 addr
->sadb_address_len
=
860 (sizeof(struct sadb_address
)+sockaddr_size
)/
862 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
863 addr
->sadb_address_proto
= 0;
864 addr
->sadb_address_prefixlen
= 32; /* XXX */
865 addr
->sadb_address_reserved
= 0;
866 if (x
->props
.family
== AF_INET
) {
867 sin
= (struct sockaddr_in
*) (addr
+ 1);
868 sin
->sin_family
= AF_INET
;
869 sin
->sin_addr
.s_addr
= x
->id
.daddr
.a4
;
871 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
873 if (x
->sel
.saddr
.a4
!= x
->props
.saddr
.a4
) {
874 addr
= (struct sadb_address
*) skb_put(skb
,
875 sizeof(struct sadb_address
)+sockaddr_size
);
876 addr
->sadb_address_len
=
877 (sizeof(struct sadb_address
)+sockaddr_size
)/
879 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_PROXY
;
880 addr
->sadb_address_proto
=
881 pfkey_proto_from_xfrm(x
->sel
.proto
);
882 addr
->sadb_address_prefixlen
= x
->sel
.prefixlen_s
;
883 addr
->sadb_address_reserved
= 0;
885 sin
= (struct sockaddr_in
*) (addr
+ 1);
886 sin
->sin_family
= AF_INET
;
887 sin
->sin_addr
.s_addr
= x
->sel
.saddr
.a4
;
888 sin
->sin_port
= x
->sel
.sport
;
889 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
892 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
893 else if (x
->props
.family
== AF_INET6
) {
894 addr
->sadb_address_prefixlen
= 128;
896 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
897 sin6
->sin6_family
= AF_INET6
;
899 sin6
->sin6_flowinfo
= 0;
900 memcpy(&sin6
->sin6_addr
, x
->id
.daddr
.a6
, sizeof(struct in6_addr
));
901 sin6
->sin6_scope_id
= 0;
903 if (memcmp (x
->sel
.saddr
.a6
, x
->props
.saddr
.a6
,
904 sizeof(struct in6_addr
))) {
905 addr
= (struct sadb_address
*) skb_put(skb
,
906 sizeof(struct sadb_address
)+sockaddr_size
);
907 addr
->sadb_address_len
=
908 (sizeof(struct sadb_address
)+sockaddr_size
)/
910 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_PROXY
;
911 addr
->sadb_address_proto
=
912 pfkey_proto_from_xfrm(x
->sel
.proto
);
913 addr
->sadb_address_prefixlen
= x
->sel
.prefixlen_s
;
914 addr
->sadb_address_reserved
= 0;
916 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
917 sin6
->sin6_family
= AF_INET6
;
918 sin6
->sin6_port
= x
->sel
.sport
;
919 sin6
->sin6_flowinfo
= 0;
920 memcpy(&sin6
->sin6_addr
, x
->sel
.saddr
.a6
,
921 sizeof(struct in6_addr
));
922 sin6
->sin6_scope_id
= 0;
930 if (add_keys
&& auth_key_size
) {
931 key
= (struct sadb_key
*) skb_put(skb
,
932 sizeof(struct sadb_key
)+auth_key_size
);
933 key
->sadb_key_len
= (sizeof(struct sadb_key
) + auth_key_size
) /
935 key
->sadb_key_exttype
= SADB_EXT_KEY_AUTH
;
936 key
->sadb_key_bits
= x
->aalg
->alg_key_len
;
937 key
->sadb_key_reserved
= 0;
938 memcpy(key
+ 1, x
->aalg
->alg_key
, (x
->aalg
->alg_key_len
+7)/8);
941 if (add_keys
&& encrypt_key_size
) {
942 key
= (struct sadb_key
*) skb_put(skb
,
943 sizeof(struct sadb_key
)+encrypt_key_size
);
944 key
->sadb_key_len
= (sizeof(struct sadb_key
) +
945 encrypt_key_size
) / sizeof(uint64_t);
946 key
->sadb_key_exttype
= SADB_EXT_KEY_ENCRYPT
;
947 key
->sadb_key_bits
= x
->ealg
->alg_key_len
;
948 key
->sadb_key_reserved
= 0;
949 memcpy(key
+ 1, x
->ealg
->alg_key
,
950 (x
->ealg
->alg_key_len
+7)/8);
954 sa2
= (struct sadb_x_sa2
*) skb_put(skb
, sizeof(struct sadb_x_sa2
));
955 sa2
->sadb_x_sa2_len
= sizeof(struct sadb_x_sa2
)/sizeof(uint64_t);
956 sa2
->sadb_x_sa2_exttype
= SADB_X_EXT_SA2
;
957 if ((mode
= pfkey_mode_from_xfrm(x
->props
.mode
)) < 0) {
959 return ERR_PTR(-EINVAL
);
961 sa2
->sadb_x_sa2_mode
= mode
;
962 sa2
->sadb_x_sa2_reserved1
= 0;
963 sa2
->sadb_x_sa2_reserved2
= 0;
964 sa2
->sadb_x_sa2_sequence
= 0;
965 sa2
->sadb_x_sa2_reqid
= x
->props
.reqid
;
967 if (natt
&& natt
->encap_type
) {
968 struct sadb_x_nat_t_type
*n_type
;
969 struct sadb_x_nat_t_port
*n_port
;
972 n_type
= (struct sadb_x_nat_t_type
*) skb_put(skb
, sizeof(*n_type
));
973 n_type
->sadb_x_nat_t_type_len
= sizeof(*n_type
)/sizeof(uint64_t);
974 n_type
->sadb_x_nat_t_type_exttype
= SADB_X_EXT_NAT_T_TYPE
;
975 n_type
->sadb_x_nat_t_type_type
= natt
->encap_type
;
976 n_type
->sadb_x_nat_t_type_reserved
[0] = 0;
977 n_type
->sadb_x_nat_t_type_reserved
[1] = 0;
978 n_type
->sadb_x_nat_t_type_reserved
[2] = 0;
981 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
982 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
983 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
984 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
985 n_port
->sadb_x_nat_t_port_reserved
= 0;
988 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
989 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
990 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
991 n_port
->sadb_x_nat_t_port_port
= natt
->encap_dport
;
992 n_port
->sadb_x_nat_t_port_reserved
= 0;
995 /* security context */
997 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
,
998 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
999 sec_ctx
->sadb_x_sec_len
=
1000 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
1001 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
1002 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
1003 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
1004 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
1005 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
1012 static struct xfrm_state
* pfkey_msg2xfrm_state(struct sadb_msg
*hdr
,
1015 struct xfrm_state
*x
;
1016 struct sadb_lifetime
*lifetime
;
1018 struct sadb_key
*key
;
1019 struct sadb_x_sec_ctx
*sec_ctx
;
1024 sa
= (struct sadb_sa
*) ext_hdrs
[SADB_EXT_SA
-1];
1026 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1027 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1028 return ERR_PTR(-EINVAL
);
1029 if (hdr
->sadb_msg_satype
== SADB_SATYPE_ESP
&&
1030 !ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1])
1031 return ERR_PTR(-EINVAL
);
1032 if (hdr
->sadb_msg_satype
== SADB_SATYPE_AH
&&
1033 !ext_hdrs
[SADB_EXT_KEY_AUTH
-1])
1034 return ERR_PTR(-EINVAL
);
1035 if (!!ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1] !=
1036 !!ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1])
1037 return ERR_PTR(-EINVAL
);
1039 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1041 return ERR_PTR(-EINVAL
);
1043 /* default error is no buffer space */
1048 Only SADB_SASTATE_MATURE SAs may be submitted in an SADB_ADD message.
1049 SADB_SASTATE_LARVAL SAs are created by SADB_GETSPI and it is not
1050 sensible to add a new SA in the DYING or SADB_SASTATE_DEAD state.
1051 Therefore, the sadb_sa_state field of all submitted SAs MUST be
1052 SADB_SASTATE_MATURE and the kernel MUST return an error if this is
1055 However, KAME setkey always uses SADB_SASTATE_LARVAL.
1056 Hence, we have to _ignore_ sadb_sa_state, which is also reasonable.
1058 if (sa
->sadb_sa_auth
> SADB_AALG_MAX
||
1059 (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
&&
1060 sa
->sadb_sa_encrypt
> SADB_X_CALG_MAX
) ||
1061 sa
->sadb_sa_encrypt
> SADB_EALG_MAX
)
1062 return ERR_PTR(-EINVAL
);
1063 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_AUTH
-1];
1065 sa
->sadb_sa_auth
!= SADB_X_AALG_NULL
&&
1066 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1067 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1068 return ERR_PTR(-EINVAL
);
1069 key
= ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1071 sa
->sadb_sa_encrypt
!= SADB_EALG_NULL
&&
1072 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1073 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1074 return ERR_PTR(-EINVAL
);
1076 x
= xfrm_state_alloc();
1078 return ERR_PTR(-ENOBUFS
);
1080 x
->id
.proto
= proto
;
1081 x
->id
.spi
= sa
->sadb_sa_spi
;
1082 x
->props
.replay_window
= sa
->sadb_sa_replay
;
1083 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOECN
)
1084 x
->props
.flags
|= XFRM_STATE_NOECN
;
1085 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_DECAP_DSCP
)
1086 x
->props
.flags
|= XFRM_STATE_DECAP_DSCP
;
1087 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOPMTUDISC
)
1088 x
->props
.flags
|= XFRM_STATE_NOPMTUDISC
;
1090 lifetime
= (struct sadb_lifetime
*) ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1];
1091 if (lifetime
!= NULL
) {
1092 x
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1093 x
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1094 x
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1095 x
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1097 lifetime
= (struct sadb_lifetime
*) ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1];
1098 if (lifetime
!= NULL
) {
1099 x
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1100 x
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1101 x
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1102 x
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1105 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
1106 if (sec_ctx
!= NULL
) {
1107 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
1112 err
= security_xfrm_state_alloc(x
, uctx
);
1119 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_AUTH
-1];
1120 if (sa
->sadb_sa_auth
) {
1122 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byid(sa
->sadb_sa_auth
);
1128 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1129 x
->aalg
= kmalloc(sizeof(*x
->aalg
) + keysize
, GFP_KERNEL
);
1132 strcpy(x
->aalg
->alg_name
, a
->name
);
1133 x
->aalg
->alg_key_len
= 0;
1135 x
->aalg
->alg_key_len
= key
->sadb_key_bits
;
1136 memcpy(x
->aalg
->alg_key
, key
+1, keysize
);
1138 x
->props
.aalgo
= sa
->sadb_sa_auth
;
1139 /* x->algo.flags = sa->sadb_sa_flags; */
1141 if (sa
->sadb_sa_encrypt
) {
1142 if (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
) {
1143 struct xfrm_algo_desc
*a
= xfrm_calg_get_byid(sa
->sadb_sa_encrypt
);
1148 x
->calg
= kmalloc(sizeof(*x
->calg
), GFP_KERNEL
);
1151 strcpy(x
->calg
->alg_name
, a
->name
);
1152 x
->props
.calgo
= sa
->sadb_sa_encrypt
;
1155 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byid(sa
->sadb_sa_encrypt
);
1160 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1162 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1163 x
->ealg
= kmalloc(sizeof(*x
->ealg
) + keysize
, GFP_KERNEL
);
1166 strcpy(x
->ealg
->alg_name
, a
->name
);
1167 x
->ealg
->alg_key_len
= 0;
1169 x
->ealg
->alg_key_len
= key
->sadb_key_bits
;
1170 memcpy(x
->ealg
->alg_key
, key
+1, keysize
);
1172 x
->props
.ealgo
= sa
->sadb_sa_encrypt
;
1175 /* x->algo.flags = sa->sadb_sa_flags; */
1177 x
->props
.family
= pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1179 if (!x
->props
.family
) {
1180 err
= -EAFNOSUPPORT
;
1183 pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
1186 if (ext_hdrs
[SADB_X_EXT_SA2
-1]) {
1187 struct sadb_x_sa2
*sa2
= (void*)ext_hdrs
[SADB_X_EXT_SA2
-1];
1188 int mode
= pfkey_mode_to_xfrm(sa2
->sadb_x_sa2_mode
);
1193 x
->props
.mode
= mode
;
1194 x
->props
.reqid
= sa2
->sadb_x_sa2_reqid
;
1197 if (ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1]) {
1198 struct sadb_address
*addr
= ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1];
1200 /* Nobody uses this, but we try. */
1201 x
->sel
.family
= pfkey_sadb_addr2xfrm_addr(addr
, &x
->sel
.saddr
);
1202 x
->sel
.prefixlen_s
= addr
->sadb_address_prefixlen
;
1206 x
->sel
.family
= x
->props
.family
;
1208 if (ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1]) {
1209 struct sadb_x_nat_t_type
* n_type
;
1210 struct xfrm_encap_tmpl
*natt
;
1212 x
->encap
= kmalloc(sizeof(*x
->encap
), GFP_KERNEL
);
1217 n_type
= ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1];
1218 natt
->encap_type
= n_type
->sadb_x_nat_t_type_type
;
1220 if (ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1]) {
1221 struct sadb_x_nat_t_port
* n_port
=
1222 ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1];
1223 natt
->encap_sport
= n_port
->sadb_x_nat_t_port_port
;
1225 if (ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1]) {
1226 struct sadb_x_nat_t_port
* n_port
=
1227 ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1];
1228 natt
->encap_dport
= n_port
->sadb_x_nat_t_port_port
;
1232 err
= xfrm_init_state(x
);
1236 x
->km
.seq
= hdr
->sadb_msg_seq
;
1240 x
->km
.state
= XFRM_STATE_DEAD
;
1242 return ERR_PTR(err
);
1245 static int pfkey_reserved(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1250 static int pfkey_getspi(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1252 struct sk_buff
*resp_skb
;
1253 struct sadb_x_sa2
*sa2
;
1254 struct sadb_address
*saddr
, *daddr
;
1255 struct sadb_msg
*out_hdr
;
1256 struct xfrm_state
*x
= NULL
;
1260 unsigned short family
;
1261 xfrm_address_t
*xsaddr
= NULL
, *xdaddr
= NULL
;
1263 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1264 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1267 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1271 if ((sa2
= ext_hdrs
[SADB_X_EXT_SA2
-1]) != NULL
) {
1272 mode
= pfkey_mode_to_xfrm(sa2
->sadb_x_sa2_mode
);
1275 reqid
= sa2
->sadb_x_sa2_reqid
;
1281 saddr
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1];
1282 daddr
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
1284 family
= ((struct sockaddr
*)(saddr
+ 1))->sa_family
;
1287 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(daddr
+ 1))->sin_addr
.s_addr
;
1288 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(saddr
+ 1))->sin_addr
.s_addr
;
1290 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1292 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(daddr
+ 1))->sin6_addr
;
1293 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(saddr
+ 1))->sin6_addr
;
1298 if (hdr
->sadb_msg_seq
) {
1299 x
= xfrm_find_acq_byseq(hdr
->sadb_msg_seq
);
1300 if (x
&& xfrm_addr_cmp(&x
->id
.daddr
, xdaddr
, family
)) {
1307 x
= xfrm_find_acq(mode
, reqid
, proto
, xdaddr
, xsaddr
, 1, family
);
1312 resp_skb
= ERR_PTR(-ENOENT
);
1314 spin_lock_bh(&x
->lock
);
1315 if (x
->km
.state
!= XFRM_STATE_DEAD
) {
1316 struct sadb_spirange
*range
= ext_hdrs
[SADB_EXT_SPIRANGE
-1];
1317 u32 min_spi
, max_spi
;
1319 if (range
!= NULL
) {
1320 min_spi
= range
->sadb_spirange_min
;
1321 max_spi
= range
->sadb_spirange_max
;
1324 max_spi
= 0x0fffffff;
1326 xfrm_alloc_spi(x
, htonl(min_spi
), htonl(max_spi
));
1328 resp_skb
= pfkey_xfrm_state2msg(x
, 0, 3);
1330 spin_unlock_bh(&x
->lock
);
1332 if (IS_ERR(resp_skb
)) {
1334 return PTR_ERR(resp_skb
);
1337 out_hdr
= (struct sadb_msg
*) resp_skb
->data
;
1338 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1339 out_hdr
->sadb_msg_type
= SADB_GETSPI
;
1340 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1341 out_hdr
->sadb_msg_errno
= 0;
1342 out_hdr
->sadb_msg_reserved
= 0;
1343 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1344 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1348 pfkey_broadcast(resp_skb
, GFP_KERNEL
, BROADCAST_ONE
, sk
);
1353 static int pfkey_acquire(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1355 struct xfrm_state
*x
;
1357 if (hdr
->sadb_msg_len
!= sizeof(struct sadb_msg
)/8)
1360 if (hdr
->sadb_msg_seq
== 0 || hdr
->sadb_msg_errno
== 0)
1363 x
= xfrm_find_acq_byseq(hdr
->sadb_msg_seq
);
1367 spin_lock_bh(&x
->lock
);
1368 if (x
->km
.state
== XFRM_STATE_ACQ
) {
1369 x
->km
.state
= XFRM_STATE_ERROR
;
1372 spin_unlock_bh(&x
->lock
);
1377 static inline int event2poltype(int event
)
1380 case XFRM_MSG_DELPOLICY
:
1381 return SADB_X_SPDDELETE
;
1382 case XFRM_MSG_NEWPOLICY
:
1383 return SADB_X_SPDADD
;
1384 case XFRM_MSG_UPDPOLICY
:
1385 return SADB_X_SPDUPDATE
;
1386 case XFRM_MSG_POLEXPIRE
:
1387 // return SADB_X_SPDEXPIRE;
1389 printk("pfkey: Unknown policy event %d\n", event
);
1396 static inline int event2keytype(int event
)
1399 case XFRM_MSG_DELSA
:
1401 case XFRM_MSG_NEWSA
:
1403 case XFRM_MSG_UPDSA
:
1405 case XFRM_MSG_EXPIRE
:
1408 printk("pfkey: Unknown SA event %d\n", event
);
1416 static int key_notify_sa(struct xfrm_state
*x
, struct km_event
*c
)
1418 struct sk_buff
*skb
;
1419 struct sadb_msg
*hdr
;
1422 if (c
->event
== XFRM_MSG_DELSA
)
1425 skb
= pfkey_xfrm_state2msg(x
, 0, hsc
);
1428 return PTR_ERR(skb
);
1430 hdr
= (struct sadb_msg
*) skb
->data
;
1431 hdr
->sadb_msg_version
= PF_KEY_V2
;
1432 hdr
->sadb_msg_type
= event2keytype(c
->event
);
1433 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1434 hdr
->sadb_msg_errno
= 0;
1435 hdr
->sadb_msg_reserved
= 0;
1436 hdr
->sadb_msg_seq
= c
->seq
;
1437 hdr
->sadb_msg_pid
= c
->pid
;
1439 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
1444 static int pfkey_add(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1446 struct xfrm_state
*x
;
1450 x
= pfkey_msg2xfrm_state(hdr
, ext_hdrs
);
1455 if (hdr
->sadb_msg_type
== SADB_ADD
)
1456 err
= xfrm_state_add(x
);
1458 err
= xfrm_state_update(x
);
1460 xfrm_audit_state_add(x
, err
? 0 : 1,
1461 audit_get_loginuid(current
->audit_context
), 0);
1464 x
->km
.state
= XFRM_STATE_DEAD
;
1465 __xfrm_state_put(x
);
1469 if (hdr
->sadb_msg_type
== SADB_ADD
)
1470 c
.event
= XFRM_MSG_NEWSA
;
1472 c
.event
= XFRM_MSG_UPDSA
;
1473 c
.seq
= hdr
->sadb_msg_seq
;
1474 c
.pid
= hdr
->sadb_msg_pid
;
1475 km_state_notify(x
, &c
);
1481 static int pfkey_delete(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1483 struct xfrm_state
*x
;
1487 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1488 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1489 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1492 x
= pfkey_xfrm_state_lookup(hdr
, ext_hdrs
);
1496 if ((err
= security_xfrm_state_delete(x
)))
1499 if (xfrm_state_kern(x
)) {
1504 err
= xfrm_state_delete(x
);
1509 c
.seq
= hdr
->sadb_msg_seq
;
1510 c
.pid
= hdr
->sadb_msg_pid
;
1511 c
.event
= XFRM_MSG_DELSA
;
1512 km_state_notify(x
, &c
);
1514 xfrm_audit_state_delete(x
, err
? 0 : 1,
1515 audit_get_loginuid(current
->audit_context
), 0);
1521 static int pfkey_get(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1524 struct sk_buff
*out_skb
;
1525 struct sadb_msg
*out_hdr
;
1526 struct xfrm_state
*x
;
1528 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1529 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1530 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1533 x
= pfkey_xfrm_state_lookup(hdr
, ext_hdrs
);
1537 out_skb
= pfkey_xfrm_state2msg(x
, 1, 3);
1538 proto
= x
->id
.proto
;
1540 if (IS_ERR(out_skb
))
1541 return PTR_ERR(out_skb
);
1543 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1544 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1545 out_hdr
->sadb_msg_type
= SADB_DUMP
;
1546 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1547 out_hdr
->sadb_msg_errno
= 0;
1548 out_hdr
->sadb_msg_reserved
= 0;
1549 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1550 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1551 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
);
1556 static struct sk_buff
*compose_sadb_supported(struct sadb_msg
*orig
,
1559 struct sk_buff
*skb
;
1560 struct sadb_msg
*hdr
;
1561 int len
, auth_len
, enc_len
, i
;
1563 auth_len
= xfrm_count_auth_supported();
1565 auth_len
*= sizeof(struct sadb_alg
);
1566 auth_len
+= sizeof(struct sadb_supported
);
1569 enc_len
= xfrm_count_enc_supported();
1571 enc_len
*= sizeof(struct sadb_alg
);
1572 enc_len
+= sizeof(struct sadb_supported
);
1575 len
= enc_len
+ auth_len
+ sizeof(struct sadb_msg
);
1577 skb
= alloc_skb(len
+ 16, allocation
);
1581 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(*hdr
));
1582 pfkey_hdr_dup(hdr
, orig
);
1583 hdr
->sadb_msg_errno
= 0;
1584 hdr
->sadb_msg_len
= len
/ sizeof(uint64_t);
1587 struct sadb_supported
*sp
;
1588 struct sadb_alg
*ap
;
1590 sp
= (struct sadb_supported
*) skb_put(skb
, auth_len
);
1591 ap
= (struct sadb_alg
*) (sp
+ 1);
1593 sp
->sadb_supported_len
= auth_len
/ sizeof(uint64_t);
1594 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_AUTH
;
1596 for (i
= 0; ; i
++) {
1597 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
1600 if (aalg
->available
)
1606 struct sadb_supported
*sp
;
1607 struct sadb_alg
*ap
;
1609 sp
= (struct sadb_supported
*) skb_put(skb
, enc_len
);
1610 ap
= (struct sadb_alg
*) (sp
+ 1);
1612 sp
->sadb_supported_len
= enc_len
/ sizeof(uint64_t);
1613 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_ENCRYPT
;
1615 for (i
= 0; ; i
++) {
1616 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
1619 if (ealg
->available
)
1628 static int pfkey_register(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1630 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1631 struct sk_buff
*supp_skb
;
1633 if (hdr
->sadb_msg_satype
> SADB_SATYPE_MAX
)
1636 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
) {
1637 if (pfk
->registered
&(1<<hdr
->sadb_msg_satype
))
1639 pfk
->registered
|= (1<<hdr
->sadb_msg_satype
);
1644 supp_skb
= compose_sadb_supported(hdr
, GFP_KERNEL
);
1646 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
)
1647 pfk
->registered
&= ~(1<<hdr
->sadb_msg_satype
);
1652 pfkey_broadcast(supp_skb
, GFP_KERNEL
, BROADCAST_REGISTERED
, sk
);
1657 static int key_notify_sa_flush(struct km_event
*c
)
1659 struct sk_buff
*skb
;
1660 struct sadb_msg
*hdr
;
1662 skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
1665 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
1666 hdr
->sadb_msg_satype
= pfkey_proto2satype(c
->data
.proto
);
1667 hdr
->sadb_msg_type
= SADB_FLUSH
;
1668 hdr
->sadb_msg_seq
= c
->seq
;
1669 hdr
->sadb_msg_pid
= c
->pid
;
1670 hdr
->sadb_msg_version
= PF_KEY_V2
;
1671 hdr
->sadb_msg_errno
= (uint8_t) 0;
1672 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
1674 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
1679 static int pfkey_flush(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1683 struct xfrm_audit audit_info
;
1686 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1690 audit_info
.loginuid
= audit_get_loginuid(current
->audit_context
);
1691 audit_info
.secid
= 0;
1692 err
= xfrm_state_flush(proto
, &audit_info
);
1695 c
.data
.proto
= proto
;
1696 c
.seq
= hdr
->sadb_msg_seq
;
1697 c
.pid
= hdr
->sadb_msg_pid
;
1698 c
.event
= XFRM_MSG_FLUSHSA
;
1699 km_state_notify(NULL
, &c
);
1704 struct pfkey_dump_data
1706 struct sk_buff
*skb
;
1707 struct sadb_msg
*hdr
;
1711 static int dump_sa(struct xfrm_state
*x
, int count
, void *ptr
)
1713 struct pfkey_dump_data
*data
= ptr
;
1714 struct sk_buff
*out_skb
;
1715 struct sadb_msg
*out_hdr
;
1717 out_skb
= pfkey_xfrm_state2msg(x
, 1, 3);
1718 if (IS_ERR(out_skb
))
1719 return PTR_ERR(out_skb
);
1721 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1722 out_hdr
->sadb_msg_version
= data
->hdr
->sadb_msg_version
;
1723 out_hdr
->sadb_msg_type
= SADB_DUMP
;
1724 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1725 out_hdr
->sadb_msg_errno
= 0;
1726 out_hdr
->sadb_msg_reserved
= 0;
1727 out_hdr
->sadb_msg_seq
= count
;
1728 out_hdr
->sadb_msg_pid
= data
->hdr
->sadb_msg_pid
;
1729 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, data
->sk
);
1733 static int pfkey_dump(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1736 struct pfkey_dump_data data
= { .skb
= skb
, .hdr
= hdr
, .sk
= sk
};
1738 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1742 return xfrm_state_walk(proto
, dump_sa
, &data
);
1745 static int pfkey_promisc(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1747 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1748 int satype
= hdr
->sadb_msg_satype
;
1750 if (hdr
->sadb_msg_len
== (sizeof(*hdr
) / sizeof(uint64_t))) {
1751 /* XXX we mangle packet... */
1752 hdr
->sadb_msg_errno
= 0;
1753 if (satype
!= 0 && satype
!= 1)
1755 pfk
->promisc
= satype
;
1757 pfkey_broadcast(skb_clone(skb
, GFP_KERNEL
), GFP_KERNEL
, BROADCAST_ALL
, NULL
);
1761 static int check_reqid(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
1764 u32 reqid
= *(u32
*)ptr
;
1766 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1767 if (xp
->xfrm_vec
[i
].reqid
== reqid
)
1773 static u32
gen_reqid(void)
1776 static u32 reqid
= IPSEC_MANUAL_REQID_MAX
;
1782 reqid
= IPSEC_MANUAL_REQID_MAX
+1;
1783 if (xfrm_policy_walk(XFRM_POLICY_TYPE_MAIN
, check_reqid
,
1784 (void*)&reqid
) != -EEXIST
)
1786 } while (reqid
!= start
);
1791 parse_ipsecrequest(struct xfrm_policy
*xp
, struct sadb_x_ipsecrequest
*rq
)
1793 struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ xp
->xfrm_nr
;
1794 struct sockaddr_in
*sin
;
1795 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1796 struct sockaddr_in6
*sin6
;
1800 if (xp
->xfrm_nr
>= XFRM_MAX_DEPTH
)
1803 if (rq
->sadb_x_ipsecrequest_mode
== 0)
1806 t
->id
.proto
= rq
->sadb_x_ipsecrequest_proto
; /* XXX check proto */
1807 if ((mode
= pfkey_mode_to_xfrm(rq
->sadb_x_ipsecrequest_mode
)) < 0)
1810 if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_USE
)
1812 else if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_UNIQUE
) {
1813 t
->reqid
= rq
->sadb_x_ipsecrequest_reqid
;
1814 if (t
->reqid
> IPSEC_MANUAL_REQID_MAX
)
1816 if (!t
->reqid
&& !(t
->reqid
= gen_reqid()))
1820 /* addresses present only in tunnel mode */
1821 if (t
->mode
== XFRM_MODE_TUNNEL
) {
1822 struct sockaddr
*sa
;
1823 sa
= (struct sockaddr
*)(rq
+1);
1824 switch(sa
->sa_family
) {
1826 sin
= (struct sockaddr_in
*)sa
;
1827 t
->saddr
.a4
= sin
->sin_addr
.s_addr
;
1829 if (sin
->sin_family
!= AF_INET
)
1831 t
->id
.daddr
.a4
= sin
->sin_addr
.s_addr
;
1833 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1835 sin6
= (struct sockaddr_in6
*)sa
;
1836 memcpy(t
->saddr
.a6
, &sin6
->sin6_addr
, sizeof(struct in6_addr
));
1838 if (sin6
->sin6_family
!= AF_INET6
)
1840 memcpy(t
->id
.daddr
.a6
, &sin6
->sin6_addr
, sizeof(struct in6_addr
));
1846 t
->encap_family
= sa
->sa_family
;
1848 t
->encap_family
= xp
->family
;
1850 /* No way to set this via kame pfkey */
1851 t
->aalgos
= t
->ealgos
= t
->calgos
= ~0;
1857 parse_ipsecrequests(struct xfrm_policy
*xp
, struct sadb_x_policy
*pol
)
1860 int len
= pol
->sadb_x_policy_len
*8 - sizeof(struct sadb_x_policy
);
1861 struct sadb_x_ipsecrequest
*rq
= (void*)(pol
+1);
1863 while (len
>= sizeof(struct sadb_x_ipsecrequest
)) {
1864 if ((err
= parse_ipsecrequest(xp
, rq
)) < 0)
1866 len
-= rq
->sadb_x_ipsecrequest_len
;
1867 rq
= (void*)((u8
*)rq
+ rq
->sadb_x_ipsecrequest_len
);
1872 static inline int pfkey_xfrm_policy2sec_ctx_size(struct xfrm_policy
*xp
)
1874 struct xfrm_sec_ctx
*xfrm_ctx
= xp
->security
;
1877 int len
= sizeof(struct sadb_x_sec_ctx
);
1878 len
+= xfrm_ctx
->ctx_len
;
1879 return PFKEY_ALIGN8(len
);
1884 static int pfkey_xfrm_policy2msg_size(struct xfrm_policy
*xp
)
1886 struct xfrm_tmpl
*t
;
1887 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
1891 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1892 t
= xp
->xfrm_vec
+ i
;
1893 socklen
+= (t
->encap_family
== AF_INET
?
1894 sizeof(struct sockaddr_in
) :
1895 sizeof(struct sockaddr_in6
));
1898 return sizeof(struct sadb_msg
) +
1899 (sizeof(struct sadb_lifetime
) * 3) +
1900 (sizeof(struct sadb_address
) * 2) +
1901 (sockaddr_size
* 2) +
1902 sizeof(struct sadb_x_policy
) +
1903 (xp
->xfrm_nr
* sizeof(struct sadb_x_ipsecrequest
)) +
1905 pfkey_xfrm_policy2sec_ctx_size(xp
);
1908 static struct sk_buff
* pfkey_xfrm_policy2msg_prep(struct xfrm_policy
*xp
)
1910 struct sk_buff
*skb
;
1913 size
= pfkey_xfrm_policy2msg_size(xp
);
1915 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
1917 return ERR_PTR(-ENOBUFS
);
1922 static int pfkey_xfrm_policy2msg(struct sk_buff
*skb
, struct xfrm_policy
*xp
, int dir
)
1924 struct sadb_msg
*hdr
;
1925 struct sadb_address
*addr
;
1926 struct sadb_lifetime
*lifetime
;
1927 struct sadb_x_policy
*pol
;
1928 struct sockaddr_in
*sin
;
1929 struct sadb_x_sec_ctx
*sec_ctx
;
1930 struct xfrm_sec_ctx
*xfrm_ctx
;
1931 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1932 struct sockaddr_in6
*sin6
;
1936 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
1937 int socklen
= (xp
->family
== AF_INET
?
1938 sizeof(struct sockaddr_in
) :
1939 sizeof(struct sockaddr_in6
));
1941 size
= pfkey_xfrm_policy2msg_size(xp
);
1943 /* call should fill header later */
1944 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
1945 memset(hdr
, 0, size
); /* XXX do we need this ? */
1948 addr
= (struct sadb_address
*) skb_put(skb
,
1949 sizeof(struct sadb_address
)+sockaddr_size
);
1950 addr
->sadb_address_len
=
1951 (sizeof(struct sadb_address
)+sockaddr_size
)/
1953 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
1954 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
1955 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_s
;
1956 addr
->sadb_address_reserved
= 0;
1958 if (xp
->family
== AF_INET
) {
1959 sin
= (struct sockaddr_in
*) (addr
+ 1);
1960 sin
->sin_family
= AF_INET
;
1961 sin
->sin_addr
.s_addr
= xp
->selector
.saddr
.a4
;
1962 sin
->sin_port
= xp
->selector
.sport
;
1963 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
1965 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1966 else if (xp
->family
== AF_INET6
) {
1967 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
1968 sin6
->sin6_family
= AF_INET6
;
1969 sin6
->sin6_port
= xp
->selector
.sport
;
1970 sin6
->sin6_flowinfo
= 0;
1971 memcpy(&sin6
->sin6_addr
, xp
->selector
.saddr
.a6
,
1972 sizeof(struct in6_addr
));
1973 sin6
->sin6_scope_id
= 0;
1980 addr
= (struct sadb_address
*) skb_put(skb
,
1981 sizeof(struct sadb_address
)+sockaddr_size
);
1982 addr
->sadb_address_len
=
1983 (sizeof(struct sadb_address
)+sockaddr_size
)/
1985 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
1986 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
1987 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_d
;
1988 addr
->sadb_address_reserved
= 0;
1989 if (xp
->family
== AF_INET
) {
1990 sin
= (struct sockaddr_in
*) (addr
+ 1);
1991 sin
->sin_family
= AF_INET
;
1992 sin
->sin_addr
.s_addr
= xp
->selector
.daddr
.a4
;
1993 sin
->sin_port
= xp
->selector
.dport
;
1994 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
1996 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1997 else if (xp
->family
== AF_INET6
) {
1998 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
1999 sin6
->sin6_family
= AF_INET6
;
2000 sin6
->sin6_port
= xp
->selector
.dport
;
2001 sin6
->sin6_flowinfo
= 0;
2002 memcpy(&sin6
->sin6_addr
, xp
->selector
.daddr
.a6
,
2003 sizeof(struct in6_addr
));
2004 sin6
->sin6_scope_id
= 0;
2011 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2012 sizeof(struct sadb_lifetime
));
2013 lifetime
->sadb_lifetime_len
=
2014 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2015 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
2016 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.hard_packet_limit
);
2017 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.hard_byte_limit
);
2018 lifetime
->sadb_lifetime_addtime
= xp
->lft
.hard_add_expires_seconds
;
2019 lifetime
->sadb_lifetime_usetime
= xp
->lft
.hard_use_expires_seconds
;
2021 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2022 sizeof(struct sadb_lifetime
));
2023 lifetime
->sadb_lifetime_len
=
2024 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2025 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
2026 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.soft_packet_limit
);
2027 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.soft_byte_limit
);
2028 lifetime
->sadb_lifetime_addtime
= xp
->lft
.soft_add_expires_seconds
;
2029 lifetime
->sadb_lifetime_usetime
= xp
->lft
.soft_use_expires_seconds
;
2031 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2032 sizeof(struct sadb_lifetime
));
2033 lifetime
->sadb_lifetime_len
=
2034 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2035 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
2036 lifetime
->sadb_lifetime_allocations
= xp
->curlft
.packets
;
2037 lifetime
->sadb_lifetime_bytes
= xp
->curlft
.bytes
;
2038 lifetime
->sadb_lifetime_addtime
= xp
->curlft
.add_time
;
2039 lifetime
->sadb_lifetime_usetime
= xp
->curlft
.use_time
;
2041 pol
= (struct sadb_x_policy
*) skb_put(skb
, sizeof(struct sadb_x_policy
));
2042 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
2043 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
2044 pol
->sadb_x_policy_type
= IPSEC_POLICY_DISCARD
;
2045 if (xp
->action
== XFRM_POLICY_ALLOW
) {
2047 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
2049 pol
->sadb_x_policy_type
= IPSEC_POLICY_NONE
;
2051 pol
->sadb_x_policy_dir
= dir
+1;
2052 pol
->sadb_x_policy_id
= xp
->index
;
2053 pol
->sadb_x_policy_priority
= xp
->priority
;
2055 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
2056 struct sadb_x_ipsecrequest
*rq
;
2057 struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ i
;
2061 req_size
= sizeof(struct sadb_x_ipsecrequest
);
2062 if (t
->mode
== XFRM_MODE_TUNNEL
)
2063 req_size
+= ((t
->encap_family
== AF_INET
?
2064 sizeof(struct sockaddr_in
) :
2065 sizeof(struct sockaddr_in6
)) * 2);
2068 rq
= (void*)skb_put(skb
, req_size
);
2069 pol
->sadb_x_policy_len
+= req_size
/8;
2070 memset(rq
, 0, sizeof(*rq
));
2071 rq
->sadb_x_ipsecrequest_len
= req_size
;
2072 rq
->sadb_x_ipsecrequest_proto
= t
->id
.proto
;
2073 if ((mode
= pfkey_mode_from_xfrm(t
->mode
)) < 0)
2075 rq
->sadb_x_ipsecrequest_mode
= mode
;
2076 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_REQUIRE
;
2078 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_UNIQUE
;
2080 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_USE
;
2081 rq
->sadb_x_ipsecrequest_reqid
= t
->reqid
;
2082 if (t
->mode
== XFRM_MODE_TUNNEL
) {
2083 switch (t
->encap_family
) {
2085 sin
= (void*)(rq
+1);
2086 sin
->sin_family
= AF_INET
;
2087 sin
->sin_addr
.s_addr
= t
->saddr
.a4
;
2089 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
2091 sin
->sin_family
= AF_INET
;
2092 sin
->sin_addr
.s_addr
= t
->id
.daddr
.a4
;
2094 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
2096 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2098 sin6
= (void*)(rq
+1);
2099 sin6
->sin6_family
= AF_INET6
;
2100 sin6
->sin6_port
= 0;
2101 sin6
->sin6_flowinfo
= 0;
2102 memcpy(&sin6
->sin6_addr
, t
->saddr
.a6
,
2103 sizeof(struct in6_addr
));
2104 sin6
->sin6_scope_id
= 0;
2107 sin6
->sin6_family
= AF_INET6
;
2108 sin6
->sin6_port
= 0;
2109 sin6
->sin6_flowinfo
= 0;
2110 memcpy(&sin6
->sin6_addr
, t
->id
.daddr
.a6
,
2111 sizeof(struct in6_addr
));
2112 sin6
->sin6_scope_id
= 0;
2121 /* security context */
2122 if ((xfrm_ctx
= xp
->security
)) {
2123 int ctx_size
= pfkey_xfrm_policy2sec_ctx_size(xp
);
2125 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
, ctx_size
);
2126 sec_ctx
->sadb_x_sec_len
= ctx_size
/ sizeof(uint64_t);
2127 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
2128 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
2129 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
2130 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
2131 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
2135 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
2136 hdr
->sadb_msg_reserved
= atomic_read(&xp
->refcnt
);
2141 static int key_notify_policy(struct xfrm_policy
*xp
, int dir
, struct km_event
*c
)
2143 struct sk_buff
*out_skb
;
2144 struct sadb_msg
*out_hdr
;
2147 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2148 if (IS_ERR(out_skb
)) {
2149 err
= PTR_ERR(out_skb
);
2152 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2156 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2157 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
2159 if (c
->data
.byid
&& c
->event
== XFRM_MSG_DELPOLICY
)
2160 out_hdr
->sadb_msg_type
= SADB_X_SPDDELETE2
;
2162 out_hdr
->sadb_msg_type
= event2poltype(c
->event
);
2163 out_hdr
->sadb_msg_errno
= 0;
2164 out_hdr
->sadb_msg_seq
= c
->seq
;
2165 out_hdr
->sadb_msg_pid
= c
->pid
;
2166 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
2172 static int pfkey_spdadd(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2175 struct sadb_lifetime
*lifetime
;
2176 struct sadb_address
*sa
;
2177 struct sadb_x_policy
*pol
;
2178 struct xfrm_policy
*xp
;
2180 struct sadb_x_sec_ctx
*sec_ctx
;
2182 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2183 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2184 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2187 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2188 if (pol
->sadb_x_policy_type
> IPSEC_POLICY_IPSEC
)
2190 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2193 xp
= xfrm_policy_alloc(GFP_KERNEL
);
2197 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
2198 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
2199 xp
->priority
= pol
->sadb_x_policy_priority
;
2201 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2202 xp
->family
= pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.saddr
);
2207 xp
->selector
.family
= xp
->family
;
2208 xp
->selector
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2209 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2210 xp
->selector
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2211 if (xp
->selector
.sport
)
2212 xp
->selector
.sport_mask
= htons(0xffff);
2214 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
2215 pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.daddr
);
2216 xp
->selector
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2218 /* Amusing, we set this twice. KAME apps appear to set same value
2219 * in both addresses.
2221 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2223 xp
->selector
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2224 if (xp
->selector
.dport
)
2225 xp
->selector
.dport_mask
= htons(0xffff);
2227 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
2228 if (sec_ctx
!= NULL
) {
2229 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2236 err
= security_xfrm_policy_alloc(xp
, uctx
);
2243 xp
->lft
.soft_byte_limit
= XFRM_INF
;
2244 xp
->lft
.hard_byte_limit
= XFRM_INF
;
2245 xp
->lft
.soft_packet_limit
= XFRM_INF
;
2246 xp
->lft
.hard_packet_limit
= XFRM_INF
;
2247 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1]) != NULL
) {
2248 xp
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2249 xp
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2250 xp
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2251 xp
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2253 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1]) != NULL
) {
2254 xp
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2255 xp
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2256 xp
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2257 xp
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2260 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
2261 (err
= parse_ipsecrequests(xp
, pol
)) < 0)
2264 err
= xfrm_policy_insert(pol
->sadb_x_policy_dir
-1, xp
,
2265 hdr
->sadb_msg_type
!= SADB_X_SPDUPDATE
);
2267 xfrm_audit_policy_add(xp
, err
? 0 : 1,
2268 audit_get_loginuid(current
->audit_context
), 0);
2273 if (hdr
->sadb_msg_type
== SADB_X_SPDUPDATE
)
2274 c
.event
= XFRM_MSG_UPDPOLICY
;
2276 c
.event
= XFRM_MSG_NEWPOLICY
;
2278 c
.seq
= hdr
->sadb_msg_seq
;
2279 c
.pid
= hdr
->sadb_msg_pid
;
2281 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2286 security_xfrm_policy_free(xp
);
2291 static int pfkey_spddelete(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2294 struct sadb_address
*sa
;
2295 struct sadb_x_policy
*pol
;
2296 struct xfrm_policy
*xp
, tmp
;
2297 struct xfrm_selector sel
;
2299 struct sadb_x_sec_ctx
*sec_ctx
;
2301 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2302 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2303 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2306 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2307 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2310 memset(&sel
, 0, sizeof(sel
));
2312 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2313 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2314 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2315 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2316 sel
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2318 sel
.sport_mask
= htons(0xffff);
2320 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
2321 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2322 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2323 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2324 sel
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2326 sel
.dport_mask
= htons(0xffff);
2328 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
2329 memset(&tmp
, 0, sizeof(struct xfrm_policy
));
2331 if (sec_ctx
!= NULL
) {
2332 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2337 err
= security_xfrm_policy_alloc(&tmp
, uctx
);
2344 xp
= xfrm_policy_bysel_ctx(XFRM_POLICY_TYPE_MAIN
, pol
->sadb_x_policy_dir
-1,
2345 &sel
, tmp
.security
, 1, &err
);
2346 security_xfrm_policy_free(&tmp
);
2351 xfrm_audit_policy_delete(xp
, err
? 0 : 1,
2352 audit_get_loginuid(current
->audit_context
), 0);
2357 c
.seq
= hdr
->sadb_msg_seq
;
2358 c
.pid
= hdr
->sadb_msg_pid
;
2359 c
.event
= XFRM_MSG_DELPOLICY
;
2360 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2367 static int key_pol_get_resp(struct sock
*sk
, struct xfrm_policy
*xp
, struct sadb_msg
*hdr
, int dir
)
2370 struct sk_buff
*out_skb
;
2371 struct sadb_msg
*out_hdr
;
2374 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2375 if (IS_ERR(out_skb
)) {
2376 err
= PTR_ERR(out_skb
);
2379 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2383 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2384 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
2385 out_hdr
->sadb_msg_type
= hdr
->sadb_msg_type
;
2386 out_hdr
->sadb_msg_satype
= 0;
2387 out_hdr
->sadb_msg_errno
= 0;
2388 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
2389 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
2390 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
);
2397 #ifdef CONFIG_NET_KEY_MIGRATE
2398 static int pfkey_sockaddr_pair_size(sa_family_t family
)
2402 return PFKEY_ALIGN8(sizeof(struct sockaddr_in
) * 2);
2403 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2405 return PFKEY_ALIGN8(sizeof(struct sockaddr_in6
) * 2);
2413 static int parse_sockaddr_pair(struct sadb_x_ipsecrequest
*rq
,
2414 xfrm_address_t
*saddr
, xfrm_address_t
*daddr
,
2417 struct sockaddr
*sa
= (struct sockaddr
*)(rq
+ 1);
2418 if (rq
->sadb_x_ipsecrequest_len
<
2419 pfkey_sockaddr_pair_size(sa
->sa_family
))
2422 switch (sa
->sa_family
) {
2425 struct sockaddr_in
*sin
;
2426 sin
= (struct sockaddr_in
*)sa
;
2427 if ((sin
+1)->sin_family
!= AF_INET
)
2429 memcpy(&saddr
->a4
, &sin
->sin_addr
, sizeof(saddr
->a4
));
2431 memcpy(&daddr
->a4
, &sin
->sin_addr
, sizeof(daddr
->a4
));
2435 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2438 struct sockaddr_in6
*sin6
;
2439 sin6
= (struct sockaddr_in6
*)sa
;
2440 if ((sin6
+1)->sin6_family
!= AF_INET6
)
2442 memcpy(&saddr
->a6
, &sin6
->sin6_addr
,
2445 memcpy(&daddr
->a6
, &sin6
->sin6_addr
,
2458 static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest
*rq1
, int len
,
2459 struct xfrm_migrate
*m
)
2462 struct sadb_x_ipsecrequest
*rq2
;
2465 if (len
<= sizeof(struct sadb_x_ipsecrequest
) ||
2466 len
< rq1
->sadb_x_ipsecrequest_len
)
2470 err
= parse_sockaddr_pair(rq1
, &m
->old_saddr
, &m
->old_daddr
,
2475 rq2
= (struct sadb_x_ipsecrequest
*)((u8
*)rq1
+ rq1
->sadb_x_ipsecrequest_len
);
2476 len
-= rq1
->sadb_x_ipsecrequest_len
;
2478 if (len
<= sizeof(struct sadb_x_ipsecrequest
) ||
2479 len
< rq2
->sadb_x_ipsecrequest_len
)
2483 err
= parse_sockaddr_pair(rq2
, &m
->new_saddr
, &m
->new_daddr
,
2488 if (rq1
->sadb_x_ipsecrequest_proto
!= rq2
->sadb_x_ipsecrequest_proto
||
2489 rq1
->sadb_x_ipsecrequest_mode
!= rq2
->sadb_x_ipsecrequest_mode
||
2490 rq1
->sadb_x_ipsecrequest_reqid
!= rq2
->sadb_x_ipsecrequest_reqid
)
2493 m
->proto
= rq1
->sadb_x_ipsecrequest_proto
;
2494 if ((mode
= pfkey_mode_to_xfrm(rq1
->sadb_x_ipsecrequest_mode
)) < 0)
2497 m
->reqid
= rq1
->sadb_x_ipsecrequest_reqid
;
2499 return ((int)(rq1
->sadb_x_ipsecrequest_len
+
2500 rq2
->sadb_x_ipsecrequest_len
));
2503 static int pfkey_migrate(struct sock
*sk
, struct sk_buff
*skb
,
2504 struct sadb_msg
*hdr
, void **ext_hdrs
)
2506 int i
, len
, ret
, err
= -EINVAL
;
2508 struct sadb_address
*sa
;
2509 struct sadb_x_policy
*pol
;
2510 struct sadb_x_ipsecrequest
*rq
;
2511 struct xfrm_selector sel
;
2512 struct xfrm_migrate m
[XFRM_MAX_DEPTH
];
2514 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
- 1],
2515 ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1]) ||
2516 !ext_hdrs
[SADB_X_EXT_POLICY
- 1]) {
2521 pol
= ext_hdrs
[SADB_X_EXT_POLICY
- 1];
2527 if (pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
) {
2532 dir
= pol
->sadb_x_policy_dir
- 1;
2533 memset(&sel
, 0, sizeof(sel
));
2535 /* set source address info of selector */
2536 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
- 1];
2537 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2538 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2539 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2540 sel
.sport
= ((struct sockaddr_in
*)(sa
+ 1))->sin_port
;
2542 sel
.sport_mask
= htons(0xffff);
2544 /* set destination address info of selector */
2545 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1],
2546 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2547 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2548 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2549 sel
.dport
= ((struct sockaddr_in
*)(sa
+ 1))->sin_port
;
2551 sel
.dport_mask
= htons(0xffff);
2553 rq
= (struct sadb_x_ipsecrequest
*)(pol
+ 1);
2555 /* extract ipsecrequests */
2557 len
= pol
->sadb_x_policy_len
* 8 - sizeof(struct sadb_x_policy
);
2559 while (len
> 0 && i
< XFRM_MAX_DEPTH
) {
2560 ret
= ipsecrequests_to_migrate(rq
, len
, &m
[i
]);
2565 rq
= (struct sadb_x_ipsecrequest
*)((u8
*)rq
+ ret
);
2571 if (!i
|| len
> 0) {
2576 return xfrm_migrate(&sel
, dir
, XFRM_POLICY_TYPE_MAIN
, m
, i
);
2582 static int pfkey_migrate(struct sock
*sk
, struct sk_buff
*skb
,
2583 struct sadb_msg
*hdr
, void **ext_hdrs
)
2585 return -ENOPROTOOPT
;
2590 static int pfkey_spdget(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2593 int err
= 0, delete;
2594 struct sadb_x_policy
*pol
;
2595 struct xfrm_policy
*xp
;
2598 if ((pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1]) == NULL
)
2601 dir
= xfrm_policy_id2dir(pol
->sadb_x_policy_id
);
2602 if (dir
>= XFRM_POLICY_MAX
)
2605 delete = (hdr
->sadb_msg_type
== SADB_X_SPDDELETE2
);
2606 xp
= xfrm_policy_byid(XFRM_POLICY_TYPE_MAIN
, dir
, pol
->sadb_x_policy_id
,
2612 xfrm_audit_policy_delete(xp
, err
? 0 : 1,
2613 audit_get_loginuid(current
->audit_context
), 0);
2617 c
.seq
= hdr
->sadb_msg_seq
;
2618 c
.pid
= hdr
->sadb_msg_pid
;
2620 c
.event
= XFRM_MSG_DELPOLICY
;
2621 km_policy_notify(xp
, dir
, &c
);
2623 err
= key_pol_get_resp(sk
, xp
, hdr
, dir
);
2631 static int dump_sp(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
2633 struct pfkey_dump_data
*data
= ptr
;
2634 struct sk_buff
*out_skb
;
2635 struct sadb_msg
*out_hdr
;
2638 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2639 if (IS_ERR(out_skb
))
2640 return PTR_ERR(out_skb
);
2642 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2646 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2647 out_hdr
->sadb_msg_version
= data
->hdr
->sadb_msg_version
;
2648 out_hdr
->sadb_msg_type
= SADB_X_SPDDUMP
;
2649 out_hdr
->sadb_msg_satype
= SADB_SATYPE_UNSPEC
;
2650 out_hdr
->sadb_msg_errno
= 0;
2651 out_hdr
->sadb_msg_seq
= count
;
2652 out_hdr
->sadb_msg_pid
= data
->hdr
->sadb_msg_pid
;
2653 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, data
->sk
);
2657 static int pfkey_spddump(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2659 struct pfkey_dump_data data
= { .skb
= skb
, .hdr
= hdr
, .sk
= sk
};
2661 return xfrm_policy_walk(XFRM_POLICY_TYPE_MAIN
, dump_sp
, &data
);
2664 static int key_notify_policy_flush(struct km_event
*c
)
2666 struct sk_buff
*skb_out
;
2667 struct sadb_msg
*hdr
;
2669 skb_out
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
2672 hdr
= (struct sadb_msg
*) skb_put(skb_out
, sizeof(struct sadb_msg
));
2673 hdr
->sadb_msg_type
= SADB_X_SPDFLUSH
;
2674 hdr
->sadb_msg_seq
= c
->seq
;
2675 hdr
->sadb_msg_pid
= c
->pid
;
2676 hdr
->sadb_msg_version
= PF_KEY_V2
;
2677 hdr
->sadb_msg_errno
= (uint8_t) 0;
2678 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
2679 pfkey_broadcast(skb_out
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
2684 static int pfkey_spdflush(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2687 struct xfrm_audit audit_info
;
2690 audit_info
.loginuid
= audit_get_loginuid(current
->audit_context
);
2691 audit_info
.secid
= 0;
2692 err
= xfrm_policy_flush(XFRM_POLICY_TYPE_MAIN
, &audit_info
);
2695 c
.data
.type
= XFRM_POLICY_TYPE_MAIN
;
2696 c
.event
= XFRM_MSG_FLUSHPOLICY
;
2697 c
.pid
= hdr
->sadb_msg_pid
;
2698 c
.seq
= hdr
->sadb_msg_seq
;
2699 km_policy_notify(NULL
, 0, &c
);
2704 typedef int (*pfkey_handler
)(struct sock
*sk
, struct sk_buff
*skb
,
2705 struct sadb_msg
*hdr
, void **ext_hdrs
);
2706 static pfkey_handler pfkey_funcs
[SADB_MAX
+ 1] = {
2707 [SADB_RESERVED
] = pfkey_reserved
,
2708 [SADB_GETSPI
] = pfkey_getspi
,
2709 [SADB_UPDATE
] = pfkey_add
,
2710 [SADB_ADD
] = pfkey_add
,
2711 [SADB_DELETE
] = pfkey_delete
,
2712 [SADB_GET
] = pfkey_get
,
2713 [SADB_ACQUIRE
] = pfkey_acquire
,
2714 [SADB_REGISTER
] = pfkey_register
,
2715 [SADB_EXPIRE
] = NULL
,
2716 [SADB_FLUSH
] = pfkey_flush
,
2717 [SADB_DUMP
] = pfkey_dump
,
2718 [SADB_X_PROMISC
] = pfkey_promisc
,
2719 [SADB_X_PCHANGE
] = NULL
,
2720 [SADB_X_SPDUPDATE
] = pfkey_spdadd
,
2721 [SADB_X_SPDADD
] = pfkey_spdadd
,
2722 [SADB_X_SPDDELETE
] = pfkey_spddelete
,
2723 [SADB_X_SPDGET
] = pfkey_spdget
,
2724 [SADB_X_SPDACQUIRE
] = NULL
,
2725 [SADB_X_SPDDUMP
] = pfkey_spddump
,
2726 [SADB_X_SPDFLUSH
] = pfkey_spdflush
,
2727 [SADB_X_SPDSETIDX
] = pfkey_spdadd
,
2728 [SADB_X_SPDDELETE2
] = pfkey_spdget
,
2729 [SADB_X_MIGRATE
] = pfkey_migrate
,
2732 static int pfkey_process(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
)
2734 void *ext_hdrs
[SADB_EXT_MAX
];
2737 pfkey_broadcast(skb_clone(skb
, GFP_KERNEL
), GFP_KERNEL
,
2738 BROADCAST_PROMISC_ONLY
, NULL
);
2740 memset(ext_hdrs
, 0, sizeof(ext_hdrs
));
2741 err
= parse_exthdrs(skb
, hdr
, ext_hdrs
);
2744 if (pfkey_funcs
[hdr
->sadb_msg_type
])
2745 err
= pfkey_funcs
[hdr
->sadb_msg_type
](sk
, skb
, hdr
, ext_hdrs
);
2750 static struct sadb_msg
*pfkey_get_base_msg(struct sk_buff
*skb
, int *errp
)
2752 struct sadb_msg
*hdr
= NULL
;
2754 if (skb
->len
< sizeof(*hdr
)) {
2757 hdr
= (struct sadb_msg
*) skb
->data
;
2758 if (hdr
->sadb_msg_version
!= PF_KEY_V2
||
2759 hdr
->sadb_msg_reserved
!= 0 ||
2760 (hdr
->sadb_msg_type
<= SADB_RESERVED
||
2761 hdr
->sadb_msg_type
> SADB_MAX
)) {
2764 } else if (hdr
->sadb_msg_len
!= (skb
->len
/
2765 sizeof(uint64_t)) ||
2766 hdr
->sadb_msg_len
< (sizeof(struct sadb_msg
) /
2767 sizeof(uint64_t))) {
2777 static inline int aalg_tmpl_set(struct xfrm_tmpl
*t
, struct xfrm_algo_desc
*d
)
2779 return t
->aalgos
& (1 << d
->desc
.sadb_alg_id
);
2782 static inline int ealg_tmpl_set(struct xfrm_tmpl
*t
, struct xfrm_algo_desc
*d
)
2784 return t
->ealgos
& (1 << d
->desc
.sadb_alg_id
);
2787 static int count_ah_combs(struct xfrm_tmpl
*t
)
2791 for (i
= 0; ; i
++) {
2792 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2795 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2796 sz
+= sizeof(struct sadb_comb
);
2798 return sz
+ sizeof(struct sadb_prop
);
2801 static int count_esp_combs(struct xfrm_tmpl
*t
)
2805 for (i
= 0; ; i
++) {
2806 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2810 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2813 for (k
= 1; ; k
++) {
2814 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2818 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2819 sz
+= sizeof(struct sadb_comb
);
2822 return sz
+ sizeof(struct sadb_prop
);
2825 static void dump_ah_combs(struct sk_buff
*skb
, struct xfrm_tmpl
*t
)
2827 struct sadb_prop
*p
;
2830 p
= (struct sadb_prop
*)skb_put(skb
, sizeof(struct sadb_prop
));
2831 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2832 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2833 p
->sadb_prop_replay
= 32;
2834 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2836 for (i
= 0; ; i
++) {
2837 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2841 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
) {
2842 struct sadb_comb
*c
;
2843 c
= (struct sadb_comb
*)skb_put(skb
, sizeof(struct sadb_comb
));
2844 memset(c
, 0, sizeof(*c
));
2845 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2846 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2847 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2848 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2849 c
->sadb_comb_hard_addtime
= 24*60*60;
2850 c
->sadb_comb_soft_addtime
= 20*60*60;
2851 c
->sadb_comb_hard_usetime
= 8*60*60;
2852 c
->sadb_comb_soft_usetime
= 7*60*60;
2857 static void dump_esp_combs(struct sk_buff
*skb
, struct xfrm_tmpl
*t
)
2859 struct sadb_prop
*p
;
2862 p
= (struct sadb_prop
*)skb_put(skb
, sizeof(struct sadb_prop
));
2863 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2864 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2865 p
->sadb_prop_replay
= 32;
2866 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2869 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2873 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2876 for (k
= 1; ; k
++) {
2877 struct sadb_comb
*c
;
2878 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2881 if (!(aalg_tmpl_set(t
, aalg
) && aalg
->available
))
2883 c
= (struct sadb_comb
*)skb_put(skb
, sizeof(struct sadb_comb
));
2884 memset(c
, 0, sizeof(*c
));
2885 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2886 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2887 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2888 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2889 c
->sadb_comb_encrypt
= ealg
->desc
.sadb_alg_id
;
2890 c
->sadb_comb_encrypt_minbits
= ealg
->desc
.sadb_alg_minbits
;
2891 c
->sadb_comb_encrypt_maxbits
= ealg
->desc
.sadb_alg_maxbits
;
2892 c
->sadb_comb_hard_addtime
= 24*60*60;
2893 c
->sadb_comb_soft_addtime
= 20*60*60;
2894 c
->sadb_comb_hard_usetime
= 8*60*60;
2895 c
->sadb_comb_soft_usetime
= 7*60*60;
2900 static int key_notify_policy_expire(struct xfrm_policy
*xp
, struct km_event
*c
)
2905 static int key_notify_sa_expire(struct xfrm_state
*x
, struct km_event
*c
)
2907 struct sk_buff
*out_skb
;
2908 struct sadb_msg
*out_hdr
;
2912 hard
= c
->data
.hard
;
2918 out_skb
= pfkey_xfrm_state2msg(x
, 0, hsc
);
2919 if (IS_ERR(out_skb
))
2920 return PTR_ERR(out_skb
);
2922 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2923 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
2924 out_hdr
->sadb_msg_type
= SADB_EXPIRE
;
2925 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
2926 out_hdr
->sadb_msg_errno
= 0;
2927 out_hdr
->sadb_msg_reserved
= 0;
2928 out_hdr
->sadb_msg_seq
= 0;
2929 out_hdr
->sadb_msg_pid
= 0;
2931 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
2935 static int pfkey_send_notify(struct xfrm_state
*x
, struct km_event
*c
)
2938 case XFRM_MSG_EXPIRE
:
2939 return key_notify_sa_expire(x
, c
);
2940 case XFRM_MSG_DELSA
:
2941 case XFRM_MSG_NEWSA
:
2942 case XFRM_MSG_UPDSA
:
2943 return key_notify_sa(x
, c
);
2944 case XFRM_MSG_FLUSHSA
:
2945 return key_notify_sa_flush(c
);
2946 case XFRM_MSG_NEWAE
: /* not yet supported */
2949 printk("pfkey: Unknown SA event %d\n", c
->event
);
2956 static int pfkey_send_policy_notify(struct xfrm_policy
*xp
, int dir
, struct km_event
*c
)
2958 if (xp
&& xp
->type
!= XFRM_POLICY_TYPE_MAIN
)
2962 case XFRM_MSG_POLEXPIRE
:
2963 return key_notify_policy_expire(xp
, c
);
2964 case XFRM_MSG_DELPOLICY
:
2965 case XFRM_MSG_NEWPOLICY
:
2966 case XFRM_MSG_UPDPOLICY
:
2967 return key_notify_policy(xp
, dir
, c
);
2968 case XFRM_MSG_FLUSHPOLICY
:
2969 if (c
->data
.type
!= XFRM_POLICY_TYPE_MAIN
)
2971 return key_notify_policy_flush(c
);
2973 printk("pfkey: Unknown policy event %d\n", c
->event
);
2980 static u32
get_acqseq(void)
2984 static DEFINE_SPINLOCK(acqseq_lock
);
2986 spin_lock_bh(&acqseq_lock
);
2987 res
= (++acqseq
? : ++acqseq
);
2988 spin_unlock_bh(&acqseq_lock
);
2992 static int pfkey_send_acquire(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*xp
, int dir
)
2994 struct sk_buff
*skb
;
2995 struct sadb_msg
*hdr
;
2996 struct sadb_address
*addr
;
2997 struct sadb_x_policy
*pol
;
2998 struct sockaddr_in
*sin
;
2999 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3000 struct sockaddr_in6
*sin6
;
3004 struct sadb_x_sec_ctx
*sec_ctx
;
3005 struct xfrm_sec_ctx
*xfrm_ctx
;
3008 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
3012 size
= sizeof(struct sadb_msg
) +
3013 (sizeof(struct sadb_address
) * 2) +
3014 (sockaddr_size
* 2) +
3015 sizeof(struct sadb_x_policy
);
3017 if (x
->id
.proto
== IPPROTO_AH
)
3018 size
+= count_ah_combs(t
);
3019 else if (x
->id
.proto
== IPPROTO_ESP
)
3020 size
+= count_esp_combs(t
);
3022 if ((xfrm_ctx
= x
->security
)) {
3023 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
3024 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
3027 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
3031 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
3032 hdr
->sadb_msg_version
= PF_KEY_V2
;
3033 hdr
->sadb_msg_type
= SADB_ACQUIRE
;
3034 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
3035 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3036 hdr
->sadb_msg_errno
= 0;
3037 hdr
->sadb_msg_reserved
= 0;
3038 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3039 hdr
->sadb_msg_pid
= 0;
3042 addr
= (struct sadb_address
*) skb_put(skb
,
3043 sizeof(struct sadb_address
)+sockaddr_size
);
3044 addr
->sadb_address_len
=
3045 (sizeof(struct sadb_address
)+sockaddr_size
)/
3047 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3048 addr
->sadb_address_proto
= 0;
3049 addr
->sadb_address_reserved
= 0;
3050 if (x
->props
.family
== AF_INET
) {
3051 addr
->sadb_address_prefixlen
= 32;
3053 sin
= (struct sockaddr_in
*) (addr
+ 1);
3054 sin
->sin_family
= AF_INET
;
3055 sin
->sin_addr
.s_addr
= x
->props
.saddr
.a4
;
3057 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3059 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3060 else if (x
->props
.family
== AF_INET6
) {
3061 addr
->sadb_address_prefixlen
= 128;
3063 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
3064 sin6
->sin6_family
= AF_INET6
;
3065 sin6
->sin6_port
= 0;
3066 sin6
->sin6_flowinfo
= 0;
3067 memcpy(&sin6
->sin6_addr
,
3068 x
->props
.saddr
.a6
, sizeof(struct in6_addr
));
3069 sin6
->sin6_scope_id
= 0;
3076 addr
= (struct sadb_address
*) skb_put(skb
,
3077 sizeof(struct sadb_address
)+sockaddr_size
);
3078 addr
->sadb_address_len
=
3079 (sizeof(struct sadb_address
)+sockaddr_size
)/
3081 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3082 addr
->sadb_address_proto
= 0;
3083 addr
->sadb_address_reserved
= 0;
3084 if (x
->props
.family
== AF_INET
) {
3085 addr
->sadb_address_prefixlen
= 32;
3087 sin
= (struct sockaddr_in
*) (addr
+ 1);
3088 sin
->sin_family
= AF_INET
;
3089 sin
->sin_addr
.s_addr
= x
->id
.daddr
.a4
;
3091 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3093 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3094 else if (x
->props
.family
== AF_INET6
) {
3095 addr
->sadb_address_prefixlen
= 128;
3097 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
3098 sin6
->sin6_family
= AF_INET6
;
3099 sin6
->sin6_port
= 0;
3100 sin6
->sin6_flowinfo
= 0;
3101 memcpy(&sin6
->sin6_addr
,
3102 x
->id
.daddr
.a6
, sizeof(struct in6_addr
));
3103 sin6
->sin6_scope_id
= 0;
3109 pol
= (struct sadb_x_policy
*) skb_put(skb
, sizeof(struct sadb_x_policy
));
3110 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
3111 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
3112 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
3113 pol
->sadb_x_policy_dir
= dir
+1;
3114 pol
->sadb_x_policy_id
= xp
->index
;
3116 /* Set sadb_comb's. */
3117 if (x
->id
.proto
== IPPROTO_AH
)
3118 dump_ah_combs(skb
, t
);
3119 else if (x
->id
.proto
== IPPROTO_ESP
)
3120 dump_esp_combs(skb
, t
);
3122 /* security context */
3124 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
,
3125 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
3126 sec_ctx
->sadb_x_sec_len
=
3127 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
3128 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
3129 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
3130 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
3131 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
3132 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
3136 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
3139 static struct xfrm_policy
*pfkey_compile_policy(struct sock
*sk
, int opt
,
3140 u8
*data
, int len
, int *dir
)
3142 struct xfrm_policy
*xp
;
3143 struct sadb_x_policy
*pol
= (struct sadb_x_policy
*)data
;
3144 struct sadb_x_sec_ctx
*sec_ctx
;
3146 switch (sk
->sk_family
) {
3148 if (opt
!= IP_IPSEC_POLICY
) {
3153 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3155 if (opt
!= IPV6_IPSEC_POLICY
) {
3168 if (len
< sizeof(struct sadb_x_policy
) ||
3169 pol
->sadb_x_policy_len
*8 > len
||
3170 pol
->sadb_x_policy_type
> IPSEC_POLICY_BYPASS
||
3171 (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
> IPSEC_DIR_OUTBOUND
))
3174 xp
= xfrm_policy_alloc(GFP_ATOMIC
);
3180 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
3181 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
3183 xp
->lft
.soft_byte_limit
= XFRM_INF
;
3184 xp
->lft
.hard_byte_limit
= XFRM_INF
;
3185 xp
->lft
.soft_packet_limit
= XFRM_INF
;
3186 xp
->lft
.hard_packet_limit
= XFRM_INF
;
3187 xp
->family
= sk
->sk_family
;
3190 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
3191 (*dir
= parse_ipsecrequests(xp
, pol
)) < 0)
3194 /* security context too */
3195 if (len
>= (pol
->sadb_x_policy_len
*8 +
3196 sizeof(struct sadb_x_sec_ctx
))) {
3197 char *p
= (char *)pol
;
3198 struct xfrm_user_sec_ctx
*uctx
;
3200 p
+= pol
->sadb_x_policy_len
*8;
3201 sec_ctx
= (struct sadb_x_sec_ctx
*)p
;
3202 if (len
< pol
->sadb_x_policy_len
*8 +
3203 sec_ctx
->sadb_x_sec_len
) {
3207 if ((*dir
= verify_sec_ctx_len(p
)))
3209 uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
3210 *dir
= security_xfrm_policy_alloc(xp
, uctx
);
3217 *dir
= pol
->sadb_x_policy_dir
-1;
3221 security_xfrm_policy_free(xp
);
3226 static int pfkey_send_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
3228 struct sk_buff
*skb
;
3229 struct sadb_msg
*hdr
;
3231 struct sadb_address
*addr
;
3232 struct sadb_x_nat_t_port
*n_port
;
3233 struct sockaddr_in
*sin
;
3234 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3235 struct sockaddr_in6
*sin6
;
3239 __u8 satype
= (x
->id
.proto
== IPPROTO_ESP
? SADB_SATYPE_ESP
: 0);
3240 struct xfrm_encap_tmpl
*natt
= NULL
;
3242 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
3254 /* Build an SADB_X_NAT_T_NEW_MAPPING message:
3256 * HDR | SA | ADDRESS_SRC (old addr) | NAT_T_SPORT (old port) |
3257 * ADDRESS_DST (new addr) | NAT_T_DPORT (new port)
3260 size
= sizeof(struct sadb_msg
) +
3261 sizeof(struct sadb_sa
) +
3262 (sizeof(struct sadb_address
) * 2) +
3263 (sockaddr_size
* 2) +
3264 (sizeof(struct sadb_x_nat_t_port
) * 2);
3266 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
3270 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
3271 hdr
->sadb_msg_version
= PF_KEY_V2
;
3272 hdr
->sadb_msg_type
= SADB_X_NAT_T_NEW_MAPPING
;
3273 hdr
->sadb_msg_satype
= satype
;
3274 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3275 hdr
->sadb_msg_errno
= 0;
3276 hdr
->sadb_msg_reserved
= 0;
3277 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3278 hdr
->sadb_msg_pid
= 0;
3281 sa
= (struct sadb_sa
*) skb_put(skb
, sizeof(struct sadb_sa
));
3282 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
3283 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
3284 sa
->sadb_sa_spi
= x
->id
.spi
;
3285 sa
->sadb_sa_replay
= 0;
3286 sa
->sadb_sa_state
= 0;
3287 sa
->sadb_sa_auth
= 0;
3288 sa
->sadb_sa_encrypt
= 0;
3289 sa
->sadb_sa_flags
= 0;
3291 /* ADDRESS_SRC (old addr) */
3292 addr
= (struct sadb_address
*)
3293 skb_put(skb
, sizeof(struct sadb_address
)+sockaddr_size
);
3294 addr
->sadb_address_len
=
3295 (sizeof(struct sadb_address
)+sockaddr_size
)/
3297 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3298 addr
->sadb_address_proto
= 0;
3299 addr
->sadb_address_reserved
= 0;
3300 if (x
->props
.family
== AF_INET
) {
3301 addr
->sadb_address_prefixlen
= 32;
3303 sin
= (struct sockaddr_in
*) (addr
+ 1);
3304 sin
->sin_family
= AF_INET
;
3305 sin
->sin_addr
.s_addr
= x
->props
.saddr
.a4
;
3307 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3309 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3310 else if (x
->props
.family
== AF_INET6
) {
3311 addr
->sadb_address_prefixlen
= 128;
3313 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
3314 sin6
->sin6_family
= AF_INET6
;
3315 sin6
->sin6_port
= 0;
3316 sin6
->sin6_flowinfo
= 0;
3317 memcpy(&sin6
->sin6_addr
,
3318 x
->props
.saddr
.a6
, sizeof(struct in6_addr
));
3319 sin6
->sin6_scope_id
= 0;
3325 /* NAT_T_SPORT (old port) */
3326 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
3327 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3328 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
3329 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
3330 n_port
->sadb_x_nat_t_port_reserved
= 0;
3332 /* ADDRESS_DST (new addr) */
3333 addr
= (struct sadb_address
*)
3334 skb_put(skb
, sizeof(struct sadb_address
)+sockaddr_size
);
3335 addr
->sadb_address_len
=
3336 (sizeof(struct sadb_address
)+sockaddr_size
)/
3338 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3339 addr
->sadb_address_proto
= 0;
3340 addr
->sadb_address_reserved
= 0;
3341 if (x
->props
.family
== AF_INET
) {
3342 addr
->sadb_address_prefixlen
= 32;
3344 sin
= (struct sockaddr_in
*) (addr
+ 1);
3345 sin
->sin_family
= AF_INET
;
3346 sin
->sin_addr
.s_addr
= ipaddr
->a4
;
3348 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3350 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3351 else if (x
->props
.family
== AF_INET6
) {
3352 addr
->sadb_address_prefixlen
= 128;
3354 sin6
= (struct sockaddr_in6
*) (addr
+ 1);
3355 sin6
->sin6_family
= AF_INET6
;
3356 sin6
->sin6_port
= 0;
3357 sin6
->sin6_flowinfo
= 0;
3358 memcpy(&sin6
->sin6_addr
, &ipaddr
->a6
, sizeof(struct in6_addr
));
3359 sin6
->sin6_scope_id
= 0;
3365 /* NAT_T_DPORT (new port) */
3366 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
3367 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3368 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
3369 n_port
->sadb_x_nat_t_port_port
= sport
;
3370 n_port
->sadb_x_nat_t_port_reserved
= 0;
3372 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
3375 #ifdef CONFIG_NET_KEY_MIGRATE
3376 static int set_sadb_address(struct sk_buff
*skb
, int sasize
, int type
,
3377 struct xfrm_selector
*sel
)
3379 struct sadb_address
*addr
;
3380 struct sockaddr_in
*sin
;
3381 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3382 struct sockaddr_in6
*sin6
;
3384 addr
= (struct sadb_address
*)skb_put(skb
, sizeof(struct sadb_address
) + sasize
);
3385 addr
->sadb_address_len
= (sizeof(struct sadb_address
) + sasize
)/8;
3386 addr
->sadb_address_exttype
= type
;
3387 addr
->sadb_address_proto
= sel
->proto
;
3388 addr
->sadb_address_reserved
= 0;
3391 case SADB_EXT_ADDRESS_SRC
:
3392 if (sel
->family
== AF_INET
) {
3393 addr
->sadb_address_prefixlen
= sel
->prefixlen_s
;
3394 sin
= (struct sockaddr_in
*)(addr
+ 1);
3395 sin
->sin_family
= AF_INET
;
3396 memcpy(&sin
->sin_addr
.s_addr
, &sel
->saddr
,
3397 sizeof(sin
->sin_addr
.s_addr
));
3399 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3401 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3402 else if (sel
->family
== AF_INET6
) {
3403 addr
->sadb_address_prefixlen
= sel
->prefixlen_s
;
3404 sin6
= (struct sockaddr_in6
*)(addr
+ 1);
3405 sin6
->sin6_family
= AF_INET6
;
3406 sin6
->sin6_port
= 0;
3407 sin6
->sin6_flowinfo
= 0;
3408 sin6
->sin6_scope_id
= 0;
3409 memcpy(&sin6
->sin6_addr
.s6_addr
, &sel
->saddr
,
3410 sizeof(sin6
->sin6_addr
.s6_addr
));
3414 case SADB_EXT_ADDRESS_DST
:
3415 if (sel
->family
== AF_INET
) {
3416 addr
->sadb_address_prefixlen
= sel
->prefixlen_d
;
3417 sin
= (struct sockaddr_in
*)(addr
+ 1);
3418 sin
->sin_family
= AF_INET
;
3419 memcpy(&sin
->sin_addr
.s_addr
, &sel
->daddr
,
3420 sizeof(sin
->sin_addr
.s_addr
));
3422 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
3424 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3425 else if (sel
->family
== AF_INET6
) {
3426 addr
->sadb_address_prefixlen
= sel
->prefixlen_d
;
3427 sin6
= (struct sockaddr_in6
*)(addr
+ 1);
3428 sin6
->sin6_family
= AF_INET6
;
3429 sin6
->sin6_port
= 0;
3430 sin6
->sin6_flowinfo
= 0;
3431 sin6
->sin6_scope_id
= 0;
3432 memcpy(&sin6
->sin6_addr
.s6_addr
, &sel
->daddr
,
3433 sizeof(sin6
->sin6_addr
.s6_addr
));
3444 static int set_ipsecrequest(struct sk_buff
*skb
,
3445 uint8_t proto
, uint8_t mode
, int level
,
3446 uint32_t reqid
, uint8_t family
,
3447 xfrm_address_t
*src
, xfrm_address_t
*dst
)
3449 struct sadb_x_ipsecrequest
*rq
;
3450 struct sockaddr_in
*sin
;
3451 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3452 struct sockaddr_in6
*sin6
;
3456 size_req
= sizeof(struct sadb_x_ipsecrequest
) +
3457 pfkey_sockaddr_pair_size(family
);
3459 rq
= (struct sadb_x_ipsecrequest
*)skb_put(skb
, size_req
);
3460 memset(rq
, 0, size_req
);
3461 rq
->sadb_x_ipsecrequest_len
= size_req
;
3462 rq
->sadb_x_ipsecrequest_proto
= proto
;
3463 rq
->sadb_x_ipsecrequest_mode
= mode
;
3464 rq
->sadb_x_ipsecrequest_level
= level
;
3465 rq
->sadb_x_ipsecrequest_reqid
= reqid
;
3469 sin
= (struct sockaddr_in
*)(rq
+ 1);
3470 sin
->sin_family
= AF_INET
;
3471 memcpy(&sin
->sin_addr
.s_addr
, src
,
3472 sizeof(sin
->sin_addr
.s_addr
));
3474 sin
->sin_family
= AF_INET
;
3475 memcpy(&sin
->sin_addr
.s_addr
, dst
,
3476 sizeof(sin
->sin_addr
.s_addr
));
3478 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3480 sin6
= (struct sockaddr_in6
*)(rq
+ 1);
3481 sin6
->sin6_family
= AF_INET6
;
3482 sin6
->sin6_port
= 0;
3483 sin6
->sin6_flowinfo
= 0;
3484 sin6
->sin6_scope_id
= 0;
3485 memcpy(&sin6
->sin6_addr
.s6_addr
, src
,
3486 sizeof(sin6
->sin6_addr
.s6_addr
));
3488 sin6
->sin6_family
= AF_INET6
;
3489 sin6
->sin6_port
= 0;
3490 sin6
->sin6_flowinfo
= 0;
3491 sin6
->sin6_scope_id
= 0;
3492 memcpy(&sin6
->sin6_addr
.s6_addr
, dst
,
3493 sizeof(sin6
->sin6_addr
.s6_addr
));
3504 #ifdef CONFIG_NET_KEY_MIGRATE
3505 static int pfkey_send_migrate(struct xfrm_selector
*sel
, u8 dir
, u8 type
,
3506 struct xfrm_migrate
*m
, int num_bundles
)
3512 struct sk_buff
*skb
;
3513 struct sadb_msg
*hdr
;
3514 struct sadb_x_policy
*pol
;
3515 struct xfrm_migrate
*mp
;
3517 if (type
!= XFRM_POLICY_TYPE_MAIN
)
3520 if (num_bundles
<= 0 || num_bundles
> XFRM_MAX_DEPTH
)
3524 sasize_sel
= pfkey_sockaddr_size(sel
->family
);
3527 size
+= (sizeof(struct sadb_address
) + sasize_sel
) * 2;
3530 size_pol
+= sizeof(struct sadb_x_policy
);
3533 for (i
= 0, mp
= m
; i
< num_bundles
; i
++, mp
++) {
3534 /* old locator pair */
3535 size_pol
+= sizeof(struct sadb_x_ipsecrequest
) +
3536 pfkey_sockaddr_pair_size(mp
->old_family
);
3537 /* new locator pair */
3538 size_pol
+= sizeof(struct sadb_x_ipsecrequest
) +
3539 pfkey_sockaddr_pair_size(mp
->new_family
);
3542 size
+= sizeof(struct sadb_msg
) + size_pol
;
3545 skb
= alloc_skb(size
, GFP_ATOMIC
);
3549 hdr
= (struct sadb_msg
*)skb_put(skb
, sizeof(struct sadb_msg
));
3550 hdr
->sadb_msg_version
= PF_KEY_V2
;
3551 hdr
->sadb_msg_type
= SADB_X_MIGRATE
;
3552 hdr
->sadb_msg_satype
= pfkey_proto2satype(m
->proto
);
3553 hdr
->sadb_msg_len
= size
/ 8;
3554 hdr
->sadb_msg_errno
= 0;
3555 hdr
->sadb_msg_reserved
= 0;
3556 hdr
->sadb_msg_seq
= 0;
3557 hdr
->sadb_msg_pid
= 0;
3560 set_sadb_address(skb
, sasize_sel
, SADB_EXT_ADDRESS_SRC
, sel
);
3563 set_sadb_address(skb
, sasize_sel
, SADB_EXT_ADDRESS_DST
, sel
);
3565 /* policy information */
3566 pol
= (struct sadb_x_policy
*)skb_put(skb
, sizeof(struct sadb_x_policy
));
3567 pol
->sadb_x_policy_len
= size_pol
/ 8;
3568 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
3569 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
3570 pol
->sadb_x_policy_dir
= dir
+ 1;
3571 pol
->sadb_x_policy_id
= 0;
3572 pol
->sadb_x_policy_priority
= 0;
3574 for (i
= 0, mp
= m
; i
< num_bundles
; i
++, mp
++) {
3575 /* old ipsecrequest */
3576 int mode
= pfkey_mode_from_xfrm(mp
->mode
);
3579 if (set_ipsecrequest(skb
, mp
->proto
, mode
,
3580 (mp
->reqid
? IPSEC_LEVEL_UNIQUE
: IPSEC_LEVEL_REQUIRE
),
3581 mp
->reqid
, mp
->old_family
,
3582 &mp
->old_saddr
, &mp
->old_daddr
) < 0) {
3586 /* new ipsecrequest */
3587 if (set_ipsecrequest(skb
, mp
->proto
, mode
,
3588 (mp
->reqid
? IPSEC_LEVEL_UNIQUE
: IPSEC_LEVEL_REQUIRE
),
3589 mp
->reqid
, mp
->new_family
,
3590 &mp
->new_saddr
, &mp
->new_daddr
) < 0) {
3595 /* broadcast migrate message to sockets */
3596 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
3601 static int pfkey_send_migrate(struct xfrm_selector
*sel
, u8 dir
, u8 type
,
3602 struct xfrm_migrate
*m
, int num_bundles
)
3604 return -ENOPROTOOPT
;
3608 static int pfkey_sendmsg(struct kiocb
*kiocb
,
3609 struct socket
*sock
, struct msghdr
*msg
, size_t len
)
3611 struct sock
*sk
= sock
->sk
;
3612 struct sk_buff
*skb
= NULL
;
3613 struct sadb_msg
*hdr
= NULL
;
3617 if (msg
->msg_flags
& MSG_OOB
)
3621 if ((unsigned)len
> sk
->sk_sndbuf
- 32)
3625 skb
= alloc_skb(len
, GFP_KERNEL
);
3630 if (memcpy_fromiovec(skb_put(skb
,len
), msg
->msg_iov
, len
))
3633 hdr
= pfkey_get_base_msg(skb
, &err
);
3637 mutex_lock(&xfrm_cfg_mutex
);
3638 err
= pfkey_process(sk
, skb
, hdr
);
3639 mutex_unlock(&xfrm_cfg_mutex
);
3642 if (err
&& hdr
&& pfkey_error(hdr
, err
, sk
) == 0)
3650 static int pfkey_recvmsg(struct kiocb
*kiocb
,
3651 struct socket
*sock
, struct msghdr
*msg
, size_t len
,
3654 struct sock
*sk
= sock
->sk
;
3655 struct sk_buff
*skb
;
3659 if (flags
& ~(MSG_PEEK
|MSG_DONTWAIT
|MSG_TRUNC
|MSG_CMSG_COMPAT
))
3662 msg
->msg_namelen
= 0;
3663 skb
= skb_recv_datagram(sk
, flags
, flags
& MSG_DONTWAIT
, &err
);
3669 msg
->msg_flags
|= MSG_TRUNC
;
3673 skb_reset_transport_header(skb
);
3674 err
= skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
3678 sock_recv_timestamp(msg
, sk
, skb
);
3680 err
= (flags
& MSG_TRUNC
) ? skb
->len
: copied
;
3683 skb_free_datagram(sk
, skb
);
3688 static const struct proto_ops pfkey_ops
= {
3690 .owner
= THIS_MODULE
,
3691 /* Operations that make no sense on pfkey sockets. */
3692 .bind
= sock_no_bind
,
3693 .connect
= sock_no_connect
,
3694 .socketpair
= sock_no_socketpair
,
3695 .accept
= sock_no_accept
,
3696 .getname
= sock_no_getname
,
3697 .ioctl
= sock_no_ioctl
,
3698 .listen
= sock_no_listen
,
3699 .shutdown
= sock_no_shutdown
,
3700 .setsockopt
= sock_no_setsockopt
,
3701 .getsockopt
= sock_no_getsockopt
,
3702 .mmap
= sock_no_mmap
,
3703 .sendpage
= sock_no_sendpage
,
3705 /* Now the operations that really occur. */
3706 .release
= pfkey_release
,
3707 .poll
= datagram_poll
,
3708 .sendmsg
= pfkey_sendmsg
,
3709 .recvmsg
= pfkey_recvmsg
,
3712 static struct net_proto_family pfkey_family_ops
= {
3714 .create
= pfkey_create
,
3715 .owner
= THIS_MODULE
,
3718 #ifdef CONFIG_PROC_FS
3719 static int pfkey_read_proc(char *buffer
, char **start
, off_t offset
,
3720 int length
, int *eof
, void *data
)
3726 struct hlist_node
*node
;
3728 len
+= sprintf(buffer
,"sk RefCnt Rmem Wmem User Inode\n");
3730 read_lock(&pfkey_table_lock
);
3732 sk_for_each(s
, node
, &pfkey_table
) {
3733 len
+= sprintf(buffer
+len
,"%p %-6d %-6u %-6u %-6u %-6lu",
3735 atomic_read(&s
->sk_refcnt
),
3736 atomic_read(&s
->sk_rmem_alloc
),
3737 atomic_read(&s
->sk_wmem_alloc
),
3742 buffer
[len
++] = '\n';
3749 if(pos
> offset
+ length
)
3755 read_unlock(&pfkey_table_lock
);
3757 *start
= buffer
+ (offset
- begin
);
3758 len
-= (offset
- begin
);
3769 static struct xfrm_mgr pfkeyv2_mgr
=
3772 .notify
= pfkey_send_notify
,
3773 .acquire
= pfkey_send_acquire
,
3774 .compile_policy
= pfkey_compile_policy
,
3775 .new_mapping
= pfkey_send_new_mapping
,
3776 .notify_policy
= pfkey_send_policy_notify
,
3777 .migrate
= pfkey_send_migrate
,
3780 static void __exit
ipsec_pfkey_exit(void)
3782 xfrm_unregister_km(&pfkeyv2_mgr
);
3783 remove_proc_entry("pfkey", init_net
.proc_net
);
3784 sock_unregister(PF_KEY
);
3785 proto_unregister(&key_proto
);
3788 static int __init
ipsec_pfkey_init(void)
3790 int err
= proto_register(&key_proto
, 0);
3795 err
= sock_register(&pfkey_family_ops
);
3797 goto out_unregister_key_proto
;
3798 #ifdef CONFIG_PROC_FS
3800 if (create_proc_read_entry("pfkey", 0, init_net
.proc_net
, pfkey_read_proc
, NULL
) == NULL
)
3801 goto out_sock_unregister
;
3803 err
= xfrm_register_km(&pfkeyv2_mgr
);
3805 goto out_remove_proc_entry
;
3808 out_remove_proc_entry
:
3809 #ifdef CONFIG_PROC_FS
3810 remove_proc_entry("net/pfkey", NULL
);
3811 out_sock_unregister
:
3813 sock_unregister(PF_KEY
);
3814 out_unregister_key_proto
:
3815 proto_unregister(&key_proto
);
3819 module_init(ipsec_pfkey_init
);
3820 module_exit(ipsec_pfkey_exit
);
3821 MODULE_LICENSE("GPL");
3822 MODULE_ALIAS_NETPROTO(PF_KEY
);