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 */
55 int (*dump
)(struct pfkey_sock
*sk
);
56 void (*done
)(struct pfkey_sock
*sk
);
58 struct xfrm_policy_walk policy
;
59 struct xfrm_state_walk state
;
64 static inline struct pfkey_sock
*pfkey_sk(struct sock
*sk
)
66 return (struct pfkey_sock
*)sk
;
69 static int pfkey_can_dump(struct sock
*sk
)
71 if (3 * atomic_read(&sk
->sk_rmem_alloc
) <= 2 * sk
->sk_rcvbuf
)
76 static void pfkey_terminate_dump(struct pfkey_sock
*pfk
)
80 pfk
->dump
.dump
= NULL
;
81 pfk
->dump
.done
= NULL
;
85 static void pfkey_sock_destruct(struct sock
*sk
)
87 pfkey_terminate_dump(pfkey_sk(sk
));
88 skb_queue_purge(&sk
->sk_receive_queue
);
90 if (!sock_flag(sk
, SOCK_DEAD
)) {
91 printk("Attempt to release alive pfkey socket: %p\n", sk
);
95 WARN_ON(atomic_read(&sk
->sk_rmem_alloc
));
96 WARN_ON(atomic_read(&sk
->sk_wmem_alloc
));
98 atomic_dec(&pfkey_socks_nr
);
101 static void pfkey_table_grab(void)
103 write_lock_bh(&pfkey_table_lock
);
105 if (atomic_read(&pfkey_table_users
)) {
106 DECLARE_WAITQUEUE(wait
, current
);
108 add_wait_queue_exclusive(&pfkey_table_wait
, &wait
);
110 set_current_state(TASK_UNINTERRUPTIBLE
);
111 if (atomic_read(&pfkey_table_users
) == 0)
113 write_unlock_bh(&pfkey_table_lock
);
115 write_lock_bh(&pfkey_table_lock
);
118 __set_current_state(TASK_RUNNING
);
119 remove_wait_queue(&pfkey_table_wait
, &wait
);
123 static __inline__
void pfkey_table_ungrab(void)
125 write_unlock_bh(&pfkey_table_lock
);
126 wake_up(&pfkey_table_wait
);
129 static __inline__
void pfkey_lock_table(void)
131 /* read_lock() synchronizes us to pfkey_table_grab */
133 read_lock(&pfkey_table_lock
);
134 atomic_inc(&pfkey_table_users
);
135 read_unlock(&pfkey_table_lock
);
138 static __inline__
void pfkey_unlock_table(void)
140 if (atomic_dec_and_test(&pfkey_table_users
))
141 wake_up(&pfkey_table_wait
);
145 static const struct proto_ops pfkey_ops
;
147 static void pfkey_insert(struct sock
*sk
)
150 sk_add_node(sk
, &pfkey_table
);
151 pfkey_table_ungrab();
154 static void pfkey_remove(struct sock
*sk
)
157 sk_del_node_init(sk
);
158 pfkey_table_ungrab();
161 static struct proto key_proto
= {
163 .owner
= THIS_MODULE
,
164 .obj_size
= sizeof(struct pfkey_sock
),
167 static int pfkey_create(struct net
*net
, struct socket
*sock
, int protocol
)
172 if (net
!= &init_net
)
173 return -EAFNOSUPPORT
;
175 if (!capable(CAP_NET_ADMIN
))
177 if (sock
->type
!= SOCK_RAW
)
178 return -ESOCKTNOSUPPORT
;
179 if (protocol
!= PF_KEY_V2
)
180 return -EPROTONOSUPPORT
;
183 sk
= sk_alloc(net
, PF_KEY
, GFP_KERNEL
, &key_proto
);
187 sock
->ops
= &pfkey_ops
;
188 sock_init_data(sock
, sk
);
190 sk
->sk_family
= PF_KEY
;
191 sk
->sk_destruct
= pfkey_sock_destruct
;
193 atomic_inc(&pfkey_socks_nr
);
202 static int pfkey_release(struct socket
*sock
)
204 struct sock
*sk
= sock
->sk
;
213 skb_queue_purge(&sk
->sk_write_queue
);
219 static int pfkey_broadcast_one(struct sk_buff
*skb
, struct sk_buff
**skb2
,
220 gfp_t allocation
, struct sock
*sk
)
226 if (atomic_read(&skb
->users
) != 1) {
227 *skb2
= skb_clone(skb
, allocation
);
230 atomic_inc(&skb
->users
);
234 if (atomic_read(&sk
->sk_rmem_alloc
) <= sk
->sk_rcvbuf
) {
236 skb_set_owner_r(*skb2
, sk
);
237 skb_queue_tail(&sk
->sk_receive_queue
, *skb2
);
238 sk
->sk_data_ready(sk
, (*skb2
)->len
);
247 /* Send SKB to all pfkey sockets matching selected criteria. */
248 #define BROADCAST_ALL 0
249 #define BROADCAST_ONE 1
250 #define BROADCAST_REGISTERED 2
251 #define BROADCAST_PROMISC_ONLY 4
252 static int pfkey_broadcast(struct sk_buff
*skb
, gfp_t allocation
,
253 int broadcast_flags
, struct sock
*one_sk
)
256 struct hlist_node
*node
;
257 struct sk_buff
*skb2
= NULL
;
260 /* XXX Do we need something like netlink_overrun? I think
261 * XXX PF_KEY socket apps will not mind current behavior.
267 sk_for_each(sk
, node
, &pfkey_table
) {
268 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
271 /* Yes, it means that if you are meant to receive this
272 * pfkey message you receive it twice as promiscuous
276 pfkey_broadcast_one(skb
, &skb2
, allocation
, sk
);
278 /* the exact target will be processed later */
281 if (broadcast_flags
!= BROADCAST_ALL
) {
282 if (broadcast_flags
& BROADCAST_PROMISC_ONLY
)
284 if ((broadcast_flags
& BROADCAST_REGISTERED
) &&
287 if (broadcast_flags
& BROADCAST_ONE
)
291 err2
= pfkey_broadcast_one(skb
, &skb2
, allocation
, sk
);
293 /* Error is cleare after succecful sending to at least one
295 if ((broadcast_flags
& BROADCAST_REGISTERED
) && err
)
298 pfkey_unlock_table();
301 err
= pfkey_broadcast_one(skb
, &skb2
, allocation
, one_sk
);
309 static int pfkey_do_dump(struct pfkey_sock
*pfk
)
313 rc
= pfk
->dump
.dump(pfk
);
317 pfkey_terminate_dump(pfk
);
321 static inline void pfkey_hdr_dup(struct sadb_msg
*new, struct sadb_msg
*orig
)
326 static int pfkey_error(struct sadb_msg
*orig
, int err
, struct sock
*sk
)
328 struct sk_buff
*skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_KERNEL
);
329 struct sadb_msg
*hdr
;
334 /* Woe be to the platform trying to support PFKEY yet
335 * having normal errnos outside the 1-255 range, inclusive.
338 if (err
== ERESTARTSYS
||
339 err
== ERESTARTNOHAND
||
340 err
== ERESTARTNOINTR
)
344 BUG_ON(err
<= 0 || err
>= 256);
346 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
347 pfkey_hdr_dup(hdr
, orig
);
348 hdr
->sadb_msg_errno
= (uint8_t) err
;
349 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) /
352 pfkey_broadcast(skb
, GFP_KERNEL
, BROADCAST_ONE
, sk
);
357 static u8 sadb_ext_min_len
[] = {
358 [SADB_EXT_RESERVED
] = (u8
) 0,
359 [SADB_EXT_SA
] = (u8
) sizeof(struct sadb_sa
),
360 [SADB_EXT_LIFETIME_CURRENT
] = (u8
) sizeof(struct sadb_lifetime
),
361 [SADB_EXT_LIFETIME_HARD
] = (u8
) sizeof(struct sadb_lifetime
),
362 [SADB_EXT_LIFETIME_SOFT
] = (u8
) sizeof(struct sadb_lifetime
),
363 [SADB_EXT_ADDRESS_SRC
] = (u8
) sizeof(struct sadb_address
),
364 [SADB_EXT_ADDRESS_DST
] = (u8
) sizeof(struct sadb_address
),
365 [SADB_EXT_ADDRESS_PROXY
] = (u8
) sizeof(struct sadb_address
),
366 [SADB_EXT_KEY_AUTH
] = (u8
) sizeof(struct sadb_key
),
367 [SADB_EXT_KEY_ENCRYPT
] = (u8
) sizeof(struct sadb_key
),
368 [SADB_EXT_IDENTITY_SRC
] = (u8
) sizeof(struct sadb_ident
),
369 [SADB_EXT_IDENTITY_DST
] = (u8
) sizeof(struct sadb_ident
),
370 [SADB_EXT_SENSITIVITY
] = (u8
) sizeof(struct sadb_sens
),
371 [SADB_EXT_PROPOSAL
] = (u8
) sizeof(struct sadb_prop
),
372 [SADB_EXT_SUPPORTED_AUTH
] = (u8
) sizeof(struct sadb_supported
),
373 [SADB_EXT_SUPPORTED_ENCRYPT
] = (u8
) sizeof(struct sadb_supported
),
374 [SADB_EXT_SPIRANGE
] = (u8
) sizeof(struct sadb_spirange
),
375 [SADB_X_EXT_KMPRIVATE
] = (u8
) sizeof(struct sadb_x_kmprivate
),
376 [SADB_X_EXT_POLICY
] = (u8
) sizeof(struct sadb_x_policy
),
377 [SADB_X_EXT_SA2
] = (u8
) sizeof(struct sadb_x_sa2
),
378 [SADB_X_EXT_NAT_T_TYPE
] = (u8
) sizeof(struct sadb_x_nat_t_type
),
379 [SADB_X_EXT_NAT_T_SPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
380 [SADB_X_EXT_NAT_T_DPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
381 [SADB_X_EXT_NAT_T_OA
] = (u8
) sizeof(struct sadb_address
),
382 [SADB_X_EXT_SEC_CTX
] = (u8
) sizeof(struct sadb_x_sec_ctx
),
385 /* Verify sadb_address_{len,prefixlen} against sa_family. */
386 static int verify_address_len(void *p
)
388 struct sadb_address
*sp
= p
;
389 struct sockaddr
*addr
= (struct sockaddr
*)(sp
+ 1);
390 struct sockaddr_in
*sin
;
391 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
392 struct sockaddr_in6
*sin6
;
396 switch (addr
->sa_family
) {
398 len
= DIV_ROUND_UP(sizeof(*sp
) + sizeof(*sin
), sizeof(uint64_t));
399 if (sp
->sadb_address_len
!= len
||
400 sp
->sadb_address_prefixlen
> 32)
403 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
405 len
= DIV_ROUND_UP(sizeof(*sp
) + sizeof(*sin6
), sizeof(uint64_t));
406 if (sp
->sadb_address_len
!= len
||
407 sp
->sadb_address_prefixlen
> 128)
412 /* It is user using kernel to keep track of security
413 * associations for another protocol, such as
414 * OSPF/RSVP/RIPV2/MIP. It is user's job to verify
417 * XXX Actually, association/policy database is not yet
418 * XXX able to cope with arbitrary sockaddr families.
419 * XXX When it can, remove this -EINVAL. -DaveM
428 static inline int pfkey_sec_ctx_len(struct sadb_x_sec_ctx
*sec_ctx
)
430 return DIV_ROUND_UP(sizeof(struct sadb_x_sec_ctx
) +
431 sec_ctx
->sadb_x_ctx_len
,
435 static inline int verify_sec_ctx_len(void *p
)
437 struct sadb_x_sec_ctx
*sec_ctx
= (struct sadb_x_sec_ctx
*)p
;
438 int len
= sec_ctx
->sadb_x_ctx_len
;
443 len
= pfkey_sec_ctx_len(sec_ctx
);
445 if (sec_ctx
->sadb_x_sec_len
!= len
)
451 static inline struct xfrm_user_sec_ctx
*pfkey_sadb2xfrm_user_sec_ctx(struct sadb_x_sec_ctx
*sec_ctx
)
453 struct xfrm_user_sec_ctx
*uctx
= NULL
;
454 int ctx_size
= sec_ctx
->sadb_x_ctx_len
;
456 uctx
= kmalloc((sizeof(*uctx
)+ctx_size
), GFP_KERNEL
);
461 uctx
->len
= pfkey_sec_ctx_len(sec_ctx
);
462 uctx
->exttype
= sec_ctx
->sadb_x_sec_exttype
;
463 uctx
->ctx_doi
= sec_ctx
->sadb_x_ctx_doi
;
464 uctx
->ctx_alg
= sec_ctx
->sadb_x_ctx_alg
;
465 uctx
->ctx_len
= sec_ctx
->sadb_x_ctx_len
;
466 memcpy(uctx
+ 1, sec_ctx
+ 1,
472 static int present_and_same_family(struct sadb_address
*src
,
473 struct sadb_address
*dst
)
475 struct sockaddr
*s_addr
, *d_addr
;
480 s_addr
= (struct sockaddr
*)(src
+ 1);
481 d_addr
= (struct sockaddr
*)(dst
+ 1);
482 if (s_addr
->sa_family
!= d_addr
->sa_family
)
484 if (s_addr
->sa_family
!= AF_INET
485 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
486 && s_addr
->sa_family
!= AF_INET6
494 static int parse_exthdrs(struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
496 char *p
= (char *) hdr
;
502 struct sadb_ext
*ehdr
= (struct sadb_ext
*) p
;
506 ext_len
= ehdr
->sadb_ext_len
;
507 ext_len
*= sizeof(uint64_t);
508 ext_type
= ehdr
->sadb_ext_type
;
509 if (ext_len
< sizeof(uint64_t) ||
511 ext_type
== SADB_EXT_RESERVED
)
514 if (ext_type
<= SADB_EXT_MAX
) {
515 int min
= (int) sadb_ext_min_len
[ext_type
];
518 if (ext_hdrs
[ext_type
-1] != NULL
)
520 if (ext_type
== SADB_EXT_ADDRESS_SRC
||
521 ext_type
== SADB_EXT_ADDRESS_DST
||
522 ext_type
== SADB_EXT_ADDRESS_PROXY
||
523 ext_type
== SADB_X_EXT_NAT_T_OA
) {
524 if (verify_address_len(p
))
527 if (ext_type
== SADB_X_EXT_SEC_CTX
) {
528 if (verify_sec_ctx_len(p
))
531 ext_hdrs
[ext_type
-1] = p
;
541 pfkey_satype2proto(uint8_t satype
)
544 case SADB_SATYPE_UNSPEC
:
545 return IPSEC_PROTO_ANY
;
548 case SADB_SATYPE_ESP
:
550 case SADB_X_SATYPE_IPCOMP
:
560 pfkey_proto2satype(uint16_t proto
)
564 return SADB_SATYPE_AH
;
566 return SADB_SATYPE_ESP
;
568 return SADB_X_SATYPE_IPCOMP
;
576 /* BTW, this scheme means that there is no way with PFKEY2 sockets to
577 * say specifically 'just raw sockets' as we encode them as 255.
580 static uint8_t pfkey_proto_to_xfrm(uint8_t proto
)
582 return (proto
== IPSEC_PROTO_ANY
? 0 : proto
);
585 static uint8_t pfkey_proto_from_xfrm(uint8_t proto
)
587 return (proto
? proto
: IPSEC_PROTO_ANY
);
590 static inline int pfkey_sockaddr_len(sa_family_t family
)
594 return sizeof(struct sockaddr_in
);
595 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
597 return sizeof(struct sockaddr_in6
);
604 int pfkey_sockaddr_extract(const struct sockaddr
*sa
, xfrm_address_t
*xaddr
)
606 switch (sa
->sa_family
) {
609 ((struct sockaddr_in
*)sa
)->sin_addr
.s_addr
;
611 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
614 &((struct sockaddr_in6
*)sa
)->sin6_addr
,
615 sizeof(struct in6_addr
));
623 int pfkey_sadb_addr2xfrm_addr(struct sadb_address
*addr
, xfrm_address_t
*xaddr
)
625 return pfkey_sockaddr_extract((struct sockaddr
*)(addr
+ 1),
629 static struct xfrm_state
*pfkey_xfrm_state_lookup(struct sadb_msg
*hdr
, void **ext_hdrs
)
632 struct sadb_address
*addr
;
634 unsigned short family
;
635 xfrm_address_t
*xaddr
;
637 sa
= (struct sadb_sa
*) ext_hdrs
[SADB_EXT_SA
-1];
641 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
645 /* sadb_address_len should be checked by caller */
646 addr
= (struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
650 family
= ((struct sockaddr
*)(addr
+ 1))->sa_family
;
653 xaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(addr
+ 1))->sin_addr
;
655 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
657 xaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(addr
+ 1))->sin6_addr
;
667 return xfrm_state_lookup(xaddr
, sa
->sadb_sa_spi
, proto
, family
);
670 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
673 pfkey_sockaddr_size(sa_family_t family
)
675 return PFKEY_ALIGN8(pfkey_sockaddr_len(family
));
678 static inline int pfkey_mode_from_xfrm(int mode
)
681 case XFRM_MODE_TRANSPORT
:
682 return IPSEC_MODE_TRANSPORT
;
683 case XFRM_MODE_TUNNEL
:
684 return IPSEC_MODE_TUNNEL
;
686 return IPSEC_MODE_BEET
;
692 static inline int pfkey_mode_to_xfrm(int mode
)
695 case IPSEC_MODE_ANY
: /*XXX*/
696 case IPSEC_MODE_TRANSPORT
:
697 return XFRM_MODE_TRANSPORT
;
698 case IPSEC_MODE_TUNNEL
:
699 return XFRM_MODE_TUNNEL
;
700 case IPSEC_MODE_BEET
:
701 return XFRM_MODE_BEET
;
707 static unsigned int pfkey_sockaddr_fill(xfrm_address_t
*xaddr
, __be16 port
,
709 unsigned short family
)
714 struct sockaddr_in
*sin
= (struct sockaddr_in
*)sa
;
715 sin
->sin_family
= AF_INET
;
716 sin
->sin_port
= port
;
717 sin
->sin_addr
.s_addr
= xaddr
->a4
;
718 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
721 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
724 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*)sa
;
725 sin6
->sin6_family
= AF_INET6
;
726 sin6
->sin6_port
= port
;
727 sin6
->sin6_flowinfo
= 0;
728 ipv6_addr_copy(&sin6
->sin6_addr
, (struct in6_addr
*)xaddr
->a6
);
729 sin6
->sin6_scope_id
= 0;
737 static struct sk_buff
*__pfkey_xfrm_state2msg(struct xfrm_state
*x
,
738 int add_keys
, int hsc
)
741 struct sadb_msg
*hdr
;
743 struct sadb_lifetime
*lifetime
;
744 struct sadb_address
*addr
;
745 struct sadb_key
*key
;
746 struct sadb_x_sa2
*sa2
;
747 struct sadb_x_sec_ctx
*sec_ctx
;
748 struct xfrm_sec_ctx
*xfrm_ctx
;
751 int auth_key_size
= 0;
752 int encrypt_key_size
= 0;
754 struct xfrm_encap_tmpl
*natt
= NULL
;
757 /* address family check */
758 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
760 return ERR_PTR(-EINVAL
);
762 /* base, SA, (lifetime (HSC),) address(SD), (address(P),)
763 key(AE), (identity(SD),) (sensitivity)> */
764 size
= sizeof(struct sadb_msg
) +sizeof(struct sadb_sa
) +
765 sizeof(struct sadb_lifetime
) +
766 ((hsc
& 1) ? sizeof(struct sadb_lifetime
) : 0) +
767 ((hsc
& 2) ? sizeof(struct sadb_lifetime
) : 0) +
768 sizeof(struct sadb_address
)*2 +
770 sizeof(struct sadb_x_sa2
);
772 if ((xfrm_ctx
= x
->security
)) {
773 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
774 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
777 /* identity & sensitivity */
778 if (xfrm_addr_cmp(&x
->sel
.saddr
, &x
->props
.saddr
, x
->props
.family
))
779 size
+= sizeof(struct sadb_address
) + sockaddr_size
;
782 if (x
->aalg
&& x
->aalg
->alg_key_len
) {
784 PFKEY_ALIGN8((x
->aalg
->alg_key_len
+ 7) / 8);
785 size
+= sizeof(struct sadb_key
) + auth_key_size
;
787 if (x
->ealg
&& x
->ealg
->alg_key_len
) {
789 PFKEY_ALIGN8((x
->ealg
->alg_key_len
+7) / 8);
790 size
+= sizeof(struct sadb_key
) + encrypt_key_size
;
796 if (natt
&& natt
->encap_type
) {
797 size
+= sizeof(struct sadb_x_nat_t_type
);
798 size
+= sizeof(struct sadb_x_nat_t_port
);
799 size
+= sizeof(struct sadb_x_nat_t_port
);
802 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
804 return ERR_PTR(-ENOBUFS
);
806 /* call should fill header later */
807 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
808 memset(hdr
, 0, size
); /* XXX do we need this ? */
809 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
812 sa
= (struct sadb_sa
*) skb_put(skb
, sizeof(struct sadb_sa
));
813 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
814 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
815 sa
->sadb_sa_spi
= x
->id
.spi
;
816 sa
->sadb_sa_replay
= x
->props
.replay_window
;
817 switch (x
->km
.state
) {
818 case XFRM_STATE_VALID
:
819 sa
->sadb_sa_state
= x
->km
.dying
?
820 SADB_SASTATE_DYING
: SADB_SASTATE_MATURE
;
823 sa
->sadb_sa_state
= SADB_SASTATE_LARVAL
;
826 sa
->sadb_sa_state
= SADB_SASTATE_DEAD
;
829 sa
->sadb_sa_auth
= 0;
831 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byname(x
->aalg
->alg_name
, 0);
832 sa
->sadb_sa_auth
= a
? a
->desc
.sadb_alg_id
: 0;
834 sa
->sadb_sa_encrypt
= 0;
835 BUG_ON(x
->ealg
&& x
->calg
);
837 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byname(x
->ealg
->alg_name
, 0);
838 sa
->sadb_sa_encrypt
= a
? a
->desc
.sadb_alg_id
: 0;
840 /* KAME compatible: sadb_sa_encrypt is overloaded with calg id */
842 struct xfrm_algo_desc
*a
= xfrm_calg_get_byname(x
->calg
->alg_name
, 0);
843 sa
->sadb_sa_encrypt
= a
? a
->desc
.sadb_alg_id
: 0;
846 sa
->sadb_sa_flags
= 0;
847 if (x
->props
.flags
& XFRM_STATE_NOECN
)
848 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOECN
;
849 if (x
->props
.flags
& XFRM_STATE_DECAP_DSCP
)
850 sa
->sadb_sa_flags
|= SADB_SAFLAGS_DECAP_DSCP
;
851 if (x
->props
.flags
& XFRM_STATE_NOPMTUDISC
)
852 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOPMTUDISC
;
856 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
857 sizeof(struct sadb_lifetime
));
858 lifetime
->sadb_lifetime_len
=
859 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
860 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
861 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.hard_packet_limit
);
862 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.hard_byte_limit
);
863 lifetime
->sadb_lifetime_addtime
= x
->lft
.hard_add_expires_seconds
;
864 lifetime
->sadb_lifetime_usetime
= x
->lft
.hard_use_expires_seconds
;
868 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
869 sizeof(struct sadb_lifetime
));
870 lifetime
->sadb_lifetime_len
=
871 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
872 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
873 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.soft_packet_limit
);
874 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.soft_byte_limit
);
875 lifetime
->sadb_lifetime_addtime
= x
->lft
.soft_add_expires_seconds
;
876 lifetime
->sadb_lifetime_usetime
= x
->lft
.soft_use_expires_seconds
;
879 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
880 sizeof(struct sadb_lifetime
));
881 lifetime
->sadb_lifetime_len
=
882 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
883 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
884 lifetime
->sadb_lifetime_allocations
= x
->curlft
.packets
;
885 lifetime
->sadb_lifetime_bytes
= x
->curlft
.bytes
;
886 lifetime
->sadb_lifetime_addtime
= x
->curlft
.add_time
;
887 lifetime
->sadb_lifetime_usetime
= x
->curlft
.use_time
;
889 addr
= (struct sadb_address
*) skb_put(skb
,
890 sizeof(struct sadb_address
)+sockaddr_size
);
891 addr
->sadb_address_len
=
892 (sizeof(struct sadb_address
)+sockaddr_size
)/
894 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
895 /* "if the ports are non-zero, then the sadb_address_proto field,
896 normally zero, MUST be filled in with the transport
897 protocol's number." - RFC2367 */
898 addr
->sadb_address_proto
= 0;
899 addr
->sadb_address_reserved
= 0;
901 addr
->sadb_address_prefixlen
=
902 pfkey_sockaddr_fill(&x
->props
.saddr
, 0,
903 (struct sockaddr
*) (addr
+ 1),
905 if (!addr
->sadb_address_prefixlen
)
909 addr
= (struct sadb_address
*) skb_put(skb
,
910 sizeof(struct sadb_address
)+sockaddr_size
);
911 addr
->sadb_address_len
=
912 (sizeof(struct sadb_address
)+sockaddr_size
)/
914 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
915 addr
->sadb_address_proto
= 0;
916 addr
->sadb_address_reserved
= 0;
918 addr
->sadb_address_prefixlen
=
919 pfkey_sockaddr_fill(&x
->id
.daddr
, 0,
920 (struct sockaddr
*) (addr
+ 1),
922 if (!addr
->sadb_address_prefixlen
)
925 if (xfrm_addr_cmp(&x
->sel
.saddr
, &x
->props
.saddr
,
927 addr
= (struct sadb_address
*) skb_put(skb
,
928 sizeof(struct sadb_address
)+sockaddr_size
);
929 addr
->sadb_address_len
=
930 (sizeof(struct sadb_address
)+sockaddr_size
)/
932 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_PROXY
;
933 addr
->sadb_address_proto
=
934 pfkey_proto_from_xfrm(x
->sel
.proto
);
935 addr
->sadb_address_prefixlen
= x
->sel
.prefixlen_s
;
936 addr
->sadb_address_reserved
= 0;
938 pfkey_sockaddr_fill(&x
->sel
.saddr
, x
->sel
.sport
,
939 (struct sockaddr
*) (addr
+ 1),
944 if (add_keys
&& auth_key_size
) {
945 key
= (struct sadb_key
*) skb_put(skb
,
946 sizeof(struct sadb_key
)+auth_key_size
);
947 key
->sadb_key_len
= (sizeof(struct sadb_key
) + auth_key_size
) /
949 key
->sadb_key_exttype
= SADB_EXT_KEY_AUTH
;
950 key
->sadb_key_bits
= x
->aalg
->alg_key_len
;
951 key
->sadb_key_reserved
= 0;
952 memcpy(key
+ 1, x
->aalg
->alg_key
, (x
->aalg
->alg_key_len
+7)/8);
955 if (add_keys
&& encrypt_key_size
) {
956 key
= (struct sadb_key
*) skb_put(skb
,
957 sizeof(struct sadb_key
)+encrypt_key_size
);
958 key
->sadb_key_len
= (sizeof(struct sadb_key
) +
959 encrypt_key_size
) / sizeof(uint64_t);
960 key
->sadb_key_exttype
= SADB_EXT_KEY_ENCRYPT
;
961 key
->sadb_key_bits
= x
->ealg
->alg_key_len
;
962 key
->sadb_key_reserved
= 0;
963 memcpy(key
+ 1, x
->ealg
->alg_key
,
964 (x
->ealg
->alg_key_len
+7)/8);
968 sa2
= (struct sadb_x_sa2
*) skb_put(skb
, sizeof(struct sadb_x_sa2
));
969 sa2
->sadb_x_sa2_len
= sizeof(struct sadb_x_sa2
)/sizeof(uint64_t);
970 sa2
->sadb_x_sa2_exttype
= SADB_X_EXT_SA2
;
971 if ((mode
= pfkey_mode_from_xfrm(x
->props
.mode
)) < 0) {
973 return ERR_PTR(-EINVAL
);
975 sa2
->sadb_x_sa2_mode
= mode
;
976 sa2
->sadb_x_sa2_reserved1
= 0;
977 sa2
->sadb_x_sa2_reserved2
= 0;
978 sa2
->sadb_x_sa2_sequence
= 0;
979 sa2
->sadb_x_sa2_reqid
= x
->props
.reqid
;
981 if (natt
&& natt
->encap_type
) {
982 struct sadb_x_nat_t_type
*n_type
;
983 struct sadb_x_nat_t_port
*n_port
;
986 n_type
= (struct sadb_x_nat_t_type
*) skb_put(skb
, sizeof(*n_type
));
987 n_type
->sadb_x_nat_t_type_len
= sizeof(*n_type
)/sizeof(uint64_t);
988 n_type
->sadb_x_nat_t_type_exttype
= SADB_X_EXT_NAT_T_TYPE
;
989 n_type
->sadb_x_nat_t_type_type
= natt
->encap_type
;
990 n_type
->sadb_x_nat_t_type_reserved
[0] = 0;
991 n_type
->sadb_x_nat_t_type_reserved
[1] = 0;
992 n_type
->sadb_x_nat_t_type_reserved
[2] = 0;
995 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
996 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
997 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
998 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
999 n_port
->sadb_x_nat_t_port_reserved
= 0;
1002 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
1003 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
1004 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
1005 n_port
->sadb_x_nat_t_port_port
= natt
->encap_dport
;
1006 n_port
->sadb_x_nat_t_port_reserved
= 0;
1009 /* security context */
1011 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
,
1012 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
1013 sec_ctx
->sadb_x_sec_len
=
1014 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
1015 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
1016 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
1017 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
1018 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
1019 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
1027 static inline struct sk_buff
*pfkey_xfrm_state2msg(struct xfrm_state
*x
)
1029 struct sk_buff
*skb
;
1031 skb
= __pfkey_xfrm_state2msg(x
, 1, 3);
1036 static inline struct sk_buff
*pfkey_xfrm_state2msg_expire(struct xfrm_state
*x
,
1039 return __pfkey_xfrm_state2msg(x
, 0, hsc
);
1042 static struct xfrm_state
* pfkey_msg2xfrm_state(struct sadb_msg
*hdr
,
1045 struct xfrm_state
*x
;
1046 struct sadb_lifetime
*lifetime
;
1048 struct sadb_key
*key
;
1049 struct sadb_x_sec_ctx
*sec_ctx
;
1054 sa
= (struct sadb_sa
*) ext_hdrs
[SADB_EXT_SA
-1];
1056 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1057 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1058 return ERR_PTR(-EINVAL
);
1059 if (hdr
->sadb_msg_satype
== SADB_SATYPE_ESP
&&
1060 !ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1])
1061 return ERR_PTR(-EINVAL
);
1062 if (hdr
->sadb_msg_satype
== SADB_SATYPE_AH
&&
1063 !ext_hdrs
[SADB_EXT_KEY_AUTH
-1])
1064 return ERR_PTR(-EINVAL
);
1065 if (!!ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1] !=
1066 !!ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1])
1067 return ERR_PTR(-EINVAL
);
1069 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1071 return ERR_PTR(-EINVAL
);
1073 /* default error is no buffer space */
1078 Only SADB_SASTATE_MATURE SAs may be submitted in an SADB_ADD message.
1079 SADB_SASTATE_LARVAL SAs are created by SADB_GETSPI and it is not
1080 sensible to add a new SA in the DYING or SADB_SASTATE_DEAD state.
1081 Therefore, the sadb_sa_state field of all submitted SAs MUST be
1082 SADB_SASTATE_MATURE and the kernel MUST return an error if this is
1085 However, KAME setkey always uses SADB_SASTATE_LARVAL.
1086 Hence, we have to _ignore_ sadb_sa_state, which is also reasonable.
1088 if (sa
->sadb_sa_auth
> SADB_AALG_MAX
||
1089 (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
&&
1090 sa
->sadb_sa_encrypt
> SADB_X_CALG_MAX
) ||
1091 sa
->sadb_sa_encrypt
> SADB_EALG_MAX
)
1092 return ERR_PTR(-EINVAL
);
1093 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_AUTH
-1];
1095 sa
->sadb_sa_auth
!= SADB_X_AALG_NULL
&&
1096 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1097 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1098 return ERR_PTR(-EINVAL
);
1099 key
= ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1101 sa
->sadb_sa_encrypt
!= SADB_EALG_NULL
&&
1102 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1103 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1104 return ERR_PTR(-EINVAL
);
1106 x
= xfrm_state_alloc();
1108 return ERR_PTR(-ENOBUFS
);
1110 x
->id
.proto
= proto
;
1111 x
->id
.spi
= sa
->sadb_sa_spi
;
1112 x
->props
.replay_window
= sa
->sadb_sa_replay
;
1113 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOECN
)
1114 x
->props
.flags
|= XFRM_STATE_NOECN
;
1115 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_DECAP_DSCP
)
1116 x
->props
.flags
|= XFRM_STATE_DECAP_DSCP
;
1117 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOPMTUDISC
)
1118 x
->props
.flags
|= XFRM_STATE_NOPMTUDISC
;
1120 lifetime
= (struct sadb_lifetime
*) ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1];
1121 if (lifetime
!= NULL
) {
1122 x
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1123 x
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1124 x
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1125 x
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1127 lifetime
= (struct sadb_lifetime
*) ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1];
1128 if (lifetime
!= NULL
) {
1129 x
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1130 x
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1131 x
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1132 x
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1135 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
1136 if (sec_ctx
!= NULL
) {
1137 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
1142 err
= security_xfrm_state_alloc(x
, uctx
);
1149 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_AUTH
-1];
1150 if (sa
->sadb_sa_auth
) {
1152 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byid(sa
->sadb_sa_auth
);
1158 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1159 x
->aalg
= kmalloc(sizeof(*x
->aalg
) + keysize
, GFP_KERNEL
);
1162 strcpy(x
->aalg
->alg_name
, a
->name
);
1163 x
->aalg
->alg_key_len
= 0;
1165 x
->aalg
->alg_key_len
= key
->sadb_key_bits
;
1166 memcpy(x
->aalg
->alg_key
, key
+1, keysize
);
1168 x
->props
.aalgo
= sa
->sadb_sa_auth
;
1169 /* x->algo.flags = sa->sadb_sa_flags; */
1171 if (sa
->sadb_sa_encrypt
) {
1172 if (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
) {
1173 struct xfrm_algo_desc
*a
= xfrm_calg_get_byid(sa
->sadb_sa_encrypt
);
1178 x
->calg
= kmalloc(sizeof(*x
->calg
), GFP_KERNEL
);
1181 strcpy(x
->calg
->alg_name
, a
->name
);
1182 x
->props
.calgo
= sa
->sadb_sa_encrypt
;
1185 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byid(sa
->sadb_sa_encrypt
);
1190 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1192 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1193 x
->ealg
= kmalloc(sizeof(*x
->ealg
) + keysize
, GFP_KERNEL
);
1196 strcpy(x
->ealg
->alg_name
, a
->name
);
1197 x
->ealg
->alg_key_len
= 0;
1199 x
->ealg
->alg_key_len
= key
->sadb_key_bits
;
1200 memcpy(x
->ealg
->alg_key
, key
+1, keysize
);
1202 x
->props
.ealgo
= sa
->sadb_sa_encrypt
;
1205 /* x->algo.flags = sa->sadb_sa_flags; */
1207 x
->props
.family
= pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1209 if (!x
->props
.family
) {
1210 err
= -EAFNOSUPPORT
;
1213 pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
1216 if (ext_hdrs
[SADB_X_EXT_SA2
-1]) {
1217 struct sadb_x_sa2
*sa2
= (void*)ext_hdrs
[SADB_X_EXT_SA2
-1];
1218 int mode
= pfkey_mode_to_xfrm(sa2
->sadb_x_sa2_mode
);
1223 x
->props
.mode
= mode
;
1224 x
->props
.reqid
= sa2
->sadb_x_sa2_reqid
;
1227 if (ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1]) {
1228 struct sadb_address
*addr
= ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1];
1230 /* Nobody uses this, but we try. */
1231 x
->sel
.family
= pfkey_sadb_addr2xfrm_addr(addr
, &x
->sel
.saddr
);
1232 x
->sel
.prefixlen_s
= addr
->sadb_address_prefixlen
;
1236 x
->sel
.family
= x
->props
.family
;
1238 if (ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1]) {
1239 struct sadb_x_nat_t_type
* n_type
;
1240 struct xfrm_encap_tmpl
*natt
;
1242 x
->encap
= kmalloc(sizeof(*x
->encap
), GFP_KERNEL
);
1247 n_type
= ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1];
1248 natt
->encap_type
= n_type
->sadb_x_nat_t_type_type
;
1250 if (ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1]) {
1251 struct sadb_x_nat_t_port
* n_port
=
1252 ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1];
1253 natt
->encap_sport
= n_port
->sadb_x_nat_t_port_port
;
1255 if (ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1]) {
1256 struct sadb_x_nat_t_port
* n_port
=
1257 ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1];
1258 natt
->encap_dport
= n_port
->sadb_x_nat_t_port_port
;
1262 err
= xfrm_init_state(x
);
1266 x
->km
.seq
= hdr
->sadb_msg_seq
;
1270 x
->km
.state
= XFRM_STATE_DEAD
;
1272 return ERR_PTR(err
);
1275 static int pfkey_reserved(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1280 static int pfkey_getspi(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1282 struct sk_buff
*resp_skb
;
1283 struct sadb_x_sa2
*sa2
;
1284 struct sadb_address
*saddr
, *daddr
;
1285 struct sadb_msg
*out_hdr
;
1286 struct sadb_spirange
*range
;
1287 struct xfrm_state
*x
= NULL
;
1290 u32 min_spi
, max_spi
;
1293 unsigned short family
;
1294 xfrm_address_t
*xsaddr
= NULL
, *xdaddr
= NULL
;
1296 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1297 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1300 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1304 if ((sa2
= ext_hdrs
[SADB_X_EXT_SA2
-1]) != NULL
) {
1305 mode
= pfkey_mode_to_xfrm(sa2
->sadb_x_sa2_mode
);
1308 reqid
= sa2
->sadb_x_sa2_reqid
;
1314 saddr
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1];
1315 daddr
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
1317 family
= ((struct sockaddr
*)(saddr
+ 1))->sa_family
;
1320 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(daddr
+ 1))->sin_addr
.s_addr
;
1321 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(saddr
+ 1))->sin_addr
.s_addr
;
1323 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1325 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(daddr
+ 1))->sin6_addr
;
1326 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(saddr
+ 1))->sin6_addr
;
1331 if (hdr
->sadb_msg_seq
) {
1332 x
= xfrm_find_acq_byseq(hdr
->sadb_msg_seq
);
1333 if (x
&& xfrm_addr_cmp(&x
->id
.daddr
, xdaddr
, family
)) {
1340 x
= xfrm_find_acq(mode
, reqid
, proto
, xdaddr
, xsaddr
, 1, family
);
1346 max_spi
= 0x0fffffff;
1348 range
= ext_hdrs
[SADB_EXT_SPIRANGE
-1];
1350 min_spi
= range
->sadb_spirange_min
;
1351 max_spi
= range
->sadb_spirange_max
;
1354 err
= xfrm_alloc_spi(x
, min_spi
, max_spi
);
1355 resp_skb
= err
? ERR_PTR(err
) : pfkey_xfrm_state2msg(x
);
1357 if (IS_ERR(resp_skb
)) {
1359 return PTR_ERR(resp_skb
);
1362 out_hdr
= (struct sadb_msg
*) resp_skb
->data
;
1363 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1364 out_hdr
->sadb_msg_type
= SADB_GETSPI
;
1365 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1366 out_hdr
->sadb_msg_errno
= 0;
1367 out_hdr
->sadb_msg_reserved
= 0;
1368 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1369 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1373 pfkey_broadcast(resp_skb
, GFP_KERNEL
, BROADCAST_ONE
, sk
);
1378 static int pfkey_acquire(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1380 struct xfrm_state
*x
;
1382 if (hdr
->sadb_msg_len
!= sizeof(struct sadb_msg
)/8)
1385 if (hdr
->sadb_msg_seq
== 0 || hdr
->sadb_msg_errno
== 0)
1388 x
= xfrm_find_acq_byseq(hdr
->sadb_msg_seq
);
1392 spin_lock_bh(&x
->lock
);
1393 if (x
->km
.state
== XFRM_STATE_ACQ
) {
1394 x
->km
.state
= XFRM_STATE_ERROR
;
1397 spin_unlock_bh(&x
->lock
);
1402 static inline int event2poltype(int event
)
1405 case XFRM_MSG_DELPOLICY
:
1406 return SADB_X_SPDDELETE
;
1407 case XFRM_MSG_NEWPOLICY
:
1408 return SADB_X_SPDADD
;
1409 case XFRM_MSG_UPDPOLICY
:
1410 return SADB_X_SPDUPDATE
;
1411 case XFRM_MSG_POLEXPIRE
:
1412 // return SADB_X_SPDEXPIRE;
1414 printk("pfkey: Unknown policy event %d\n", event
);
1421 static inline int event2keytype(int event
)
1424 case XFRM_MSG_DELSA
:
1426 case XFRM_MSG_NEWSA
:
1428 case XFRM_MSG_UPDSA
:
1430 case XFRM_MSG_EXPIRE
:
1433 printk("pfkey: Unknown SA event %d\n", event
);
1441 static int key_notify_sa(struct xfrm_state
*x
, struct km_event
*c
)
1443 struct sk_buff
*skb
;
1444 struct sadb_msg
*hdr
;
1446 skb
= pfkey_xfrm_state2msg(x
);
1449 return PTR_ERR(skb
);
1451 hdr
= (struct sadb_msg
*) skb
->data
;
1452 hdr
->sadb_msg_version
= PF_KEY_V2
;
1453 hdr
->sadb_msg_type
= event2keytype(c
->event
);
1454 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1455 hdr
->sadb_msg_errno
= 0;
1456 hdr
->sadb_msg_reserved
= 0;
1457 hdr
->sadb_msg_seq
= c
->seq
;
1458 hdr
->sadb_msg_pid
= c
->pid
;
1460 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
1465 static int pfkey_add(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1467 struct xfrm_state
*x
;
1471 x
= pfkey_msg2xfrm_state(hdr
, ext_hdrs
);
1476 if (hdr
->sadb_msg_type
== SADB_ADD
)
1477 err
= xfrm_state_add(x
);
1479 err
= xfrm_state_update(x
);
1481 xfrm_audit_state_add(x
, err
? 0 : 1,
1482 audit_get_loginuid(current
),
1483 audit_get_sessionid(current
), 0);
1486 x
->km
.state
= XFRM_STATE_DEAD
;
1487 __xfrm_state_put(x
);
1491 if (hdr
->sadb_msg_type
== SADB_ADD
)
1492 c
.event
= XFRM_MSG_NEWSA
;
1494 c
.event
= XFRM_MSG_UPDSA
;
1495 c
.seq
= hdr
->sadb_msg_seq
;
1496 c
.pid
= hdr
->sadb_msg_pid
;
1497 km_state_notify(x
, &c
);
1503 static int pfkey_delete(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1505 struct xfrm_state
*x
;
1509 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1510 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1511 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1514 x
= pfkey_xfrm_state_lookup(hdr
, ext_hdrs
);
1518 if ((err
= security_xfrm_state_delete(x
)))
1521 if (xfrm_state_kern(x
)) {
1526 err
= xfrm_state_delete(x
);
1531 c
.seq
= hdr
->sadb_msg_seq
;
1532 c
.pid
= hdr
->sadb_msg_pid
;
1533 c
.event
= XFRM_MSG_DELSA
;
1534 km_state_notify(x
, &c
);
1536 xfrm_audit_state_delete(x
, err
? 0 : 1,
1537 audit_get_loginuid(current
),
1538 audit_get_sessionid(current
), 0);
1544 static int pfkey_get(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1547 struct sk_buff
*out_skb
;
1548 struct sadb_msg
*out_hdr
;
1549 struct xfrm_state
*x
;
1551 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1552 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1553 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1556 x
= pfkey_xfrm_state_lookup(hdr
, ext_hdrs
);
1560 out_skb
= pfkey_xfrm_state2msg(x
);
1561 proto
= x
->id
.proto
;
1563 if (IS_ERR(out_skb
))
1564 return PTR_ERR(out_skb
);
1566 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1567 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1568 out_hdr
->sadb_msg_type
= SADB_GET
;
1569 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1570 out_hdr
->sadb_msg_errno
= 0;
1571 out_hdr
->sadb_msg_reserved
= 0;
1572 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1573 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1574 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
);
1579 static struct sk_buff
*compose_sadb_supported(struct sadb_msg
*orig
,
1582 struct sk_buff
*skb
;
1583 struct sadb_msg
*hdr
;
1584 int len
, auth_len
, enc_len
, i
;
1586 auth_len
= xfrm_count_auth_supported();
1588 auth_len
*= sizeof(struct sadb_alg
);
1589 auth_len
+= sizeof(struct sadb_supported
);
1592 enc_len
= xfrm_count_enc_supported();
1594 enc_len
*= sizeof(struct sadb_alg
);
1595 enc_len
+= sizeof(struct sadb_supported
);
1598 len
= enc_len
+ auth_len
+ sizeof(struct sadb_msg
);
1600 skb
= alloc_skb(len
+ 16, allocation
);
1604 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(*hdr
));
1605 pfkey_hdr_dup(hdr
, orig
);
1606 hdr
->sadb_msg_errno
= 0;
1607 hdr
->sadb_msg_len
= len
/ sizeof(uint64_t);
1610 struct sadb_supported
*sp
;
1611 struct sadb_alg
*ap
;
1613 sp
= (struct sadb_supported
*) skb_put(skb
, auth_len
);
1614 ap
= (struct sadb_alg
*) (sp
+ 1);
1616 sp
->sadb_supported_len
= auth_len
/ sizeof(uint64_t);
1617 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_AUTH
;
1619 for (i
= 0; ; i
++) {
1620 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
1623 if (aalg
->available
)
1629 struct sadb_supported
*sp
;
1630 struct sadb_alg
*ap
;
1632 sp
= (struct sadb_supported
*) skb_put(skb
, enc_len
);
1633 ap
= (struct sadb_alg
*) (sp
+ 1);
1635 sp
->sadb_supported_len
= enc_len
/ sizeof(uint64_t);
1636 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_ENCRYPT
;
1638 for (i
= 0; ; i
++) {
1639 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
1642 if (ealg
->available
)
1651 static int pfkey_register(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1653 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1654 struct sk_buff
*supp_skb
;
1656 if (hdr
->sadb_msg_satype
> SADB_SATYPE_MAX
)
1659 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
) {
1660 if (pfk
->registered
&(1<<hdr
->sadb_msg_satype
))
1662 pfk
->registered
|= (1<<hdr
->sadb_msg_satype
);
1667 supp_skb
= compose_sadb_supported(hdr
, GFP_KERNEL
);
1669 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
)
1670 pfk
->registered
&= ~(1<<hdr
->sadb_msg_satype
);
1675 pfkey_broadcast(supp_skb
, GFP_KERNEL
, BROADCAST_REGISTERED
, sk
);
1680 static int key_notify_sa_flush(struct km_event
*c
)
1682 struct sk_buff
*skb
;
1683 struct sadb_msg
*hdr
;
1685 skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
1688 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
1689 hdr
->sadb_msg_satype
= pfkey_proto2satype(c
->data
.proto
);
1690 hdr
->sadb_msg_type
= SADB_FLUSH
;
1691 hdr
->sadb_msg_seq
= c
->seq
;
1692 hdr
->sadb_msg_pid
= c
->pid
;
1693 hdr
->sadb_msg_version
= PF_KEY_V2
;
1694 hdr
->sadb_msg_errno
= (uint8_t) 0;
1695 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
1697 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
1702 static int pfkey_flush(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1706 struct xfrm_audit audit_info
;
1709 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1713 audit_info
.loginuid
= audit_get_loginuid(current
);
1714 audit_info
.sessionid
= audit_get_sessionid(current
);
1715 audit_info
.secid
= 0;
1716 err
= xfrm_state_flush(proto
, &audit_info
);
1719 c
.data
.proto
= proto
;
1720 c
.seq
= hdr
->sadb_msg_seq
;
1721 c
.pid
= hdr
->sadb_msg_pid
;
1722 c
.event
= XFRM_MSG_FLUSHSA
;
1723 km_state_notify(NULL
, &c
);
1728 static int dump_sa(struct xfrm_state
*x
, int count
, void *ptr
)
1730 struct pfkey_sock
*pfk
= ptr
;
1731 struct sk_buff
*out_skb
;
1732 struct sadb_msg
*out_hdr
;
1734 if (!pfkey_can_dump(&pfk
->sk
))
1737 out_skb
= pfkey_xfrm_state2msg(x
);
1738 if (IS_ERR(out_skb
))
1739 return PTR_ERR(out_skb
);
1741 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1742 out_hdr
->sadb_msg_version
= pfk
->dump
.msg_version
;
1743 out_hdr
->sadb_msg_type
= SADB_DUMP
;
1744 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1745 out_hdr
->sadb_msg_errno
= 0;
1746 out_hdr
->sadb_msg_reserved
= 0;
1747 out_hdr
->sadb_msg_seq
= count
;
1748 out_hdr
->sadb_msg_pid
= pfk
->dump
.msg_pid
;
1749 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, &pfk
->sk
);
1753 static int pfkey_dump_sa(struct pfkey_sock
*pfk
)
1755 return xfrm_state_walk(&pfk
->dump
.u
.state
, dump_sa
, (void *) pfk
);
1758 static void pfkey_dump_sa_done(struct pfkey_sock
*pfk
)
1760 xfrm_state_walk_done(&pfk
->dump
.u
.state
);
1763 static int pfkey_dump(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1766 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1768 if (pfk
->dump
.dump
!= NULL
)
1771 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1775 pfk
->dump
.msg_version
= hdr
->sadb_msg_version
;
1776 pfk
->dump
.msg_pid
= hdr
->sadb_msg_pid
;
1777 pfk
->dump
.dump
= pfkey_dump_sa
;
1778 pfk
->dump
.done
= pfkey_dump_sa_done
;
1779 xfrm_state_walk_init(&pfk
->dump
.u
.state
, proto
);
1781 return pfkey_do_dump(pfk
);
1784 static int pfkey_promisc(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
1786 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1787 int satype
= hdr
->sadb_msg_satype
;
1789 if (hdr
->sadb_msg_len
== (sizeof(*hdr
) / sizeof(uint64_t))) {
1790 /* XXX we mangle packet... */
1791 hdr
->sadb_msg_errno
= 0;
1792 if (satype
!= 0 && satype
!= 1)
1794 pfk
->promisc
= satype
;
1796 pfkey_broadcast(skb_clone(skb
, GFP_KERNEL
), GFP_KERNEL
, BROADCAST_ALL
, NULL
);
1800 static int check_reqid(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
1803 u32 reqid
= *(u32
*)ptr
;
1805 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1806 if (xp
->xfrm_vec
[i
].reqid
== reqid
)
1812 static u32
gen_reqid(void)
1814 struct xfrm_policy_walk walk
;
1817 static u32 reqid
= IPSEC_MANUAL_REQID_MAX
;
1823 reqid
= IPSEC_MANUAL_REQID_MAX
+1;
1824 xfrm_policy_walk_init(&walk
, XFRM_POLICY_TYPE_MAIN
);
1825 rc
= xfrm_policy_walk(&walk
, check_reqid
, (void*)&reqid
);
1826 xfrm_policy_walk_done(&walk
);
1829 } while (reqid
!= start
);
1834 parse_ipsecrequest(struct xfrm_policy
*xp
, struct sadb_x_ipsecrequest
*rq
)
1836 struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ xp
->xfrm_nr
;
1839 if (xp
->xfrm_nr
>= XFRM_MAX_DEPTH
)
1842 if (rq
->sadb_x_ipsecrequest_mode
== 0)
1845 t
->id
.proto
= rq
->sadb_x_ipsecrequest_proto
; /* XXX check proto */
1846 if ((mode
= pfkey_mode_to_xfrm(rq
->sadb_x_ipsecrequest_mode
)) < 0)
1849 if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_USE
)
1851 else if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_UNIQUE
) {
1852 t
->reqid
= rq
->sadb_x_ipsecrequest_reqid
;
1853 if (t
->reqid
> IPSEC_MANUAL_REQID_MAX
)
1855 if (!t
->reqid
&& !(t
->reqid
= gen_reqid()))
1859 /* addresses present only in tunnel mode */
1860 if (t
->mode
== XFRM_MODE_TUNNEL
) {
1861 u8
*sa
= (u8
*) (rq
+ 1);
1862 int family
, socklen
;
1864 family
= pfkey_sockaddr_extract((struct sockaddr
*)sa
,
1869 socklen
= pfkey_sockaddr_len(family
);
1870 if (pfkey_sockaddr_extract((struct sockaddr
*)(sa
+ socklen
),
1871 &t
->id
.daddr
) != family
)
1873 t
->encap_family
= family
;
1875 t
->encap_family
= xp
->family
;
1877 /* No way to set this via kame pfkey */
1884 parse_ipsecrequests(struct xfrm_policy
*xp
, struct sadb_x_policy
*pol
)
1887 int len
= pol
->sadb_x_policy_len
*8 - sizeof(struct sadb_x_policy
);
1888 struct sadb_x_ipsecrequest
*rq
= (void*)(pol
+1);
1890 while (len
>= sizeof(struct sadb_x_ipsecrequest
)) {
1891 if ((err
= parse_ipsecrequest(xp
, rq
)) < 0)
1893 len
-= rq
->sadb_x_ipsecrequest_len
;
1894 rq
= (void*)((u8
*)rq
+ rq
->sadb_x_ipsecrequest_len
);
1899 static inline int pfkey_xfrm_policy2sec_ctx_size(struct xfrm_policy
*xp
)
1901 struct xfrm_sec_ctx
*xfrm_ctx
= xp
->security
;
1904 int len
= sizeof(struct sadb_x_sec_ctx
);
1905 len
+= xfrm_ctx
->ctx_len
;
1906 return PFKEY_ALIGN8(len
);
1911 static int pfkey_xfrm_policy2msg_size(struct xfrm_policy
*xp
)
1913 struct xfrm_tmpl
*t
;
1914 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
1918 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1919 t
= xp
->xfrm_vec
+ i
;
1920 socklen
+= pfkey_sockaddr_len(t
->encap_family
);
1923 return sizeof(struct sadb_msg
) +
1924 (sizeof(struct sadb_lifetime
) * 3) +
1925 (sizeof(struct sadb_address
) * 2) +
1926 (sockaddr_size
* 2) +
1927 sizeof(struct sadb_x_policy
) +
1928 (xp
->xfrm_nr
* sizeof(struct sadb_x_ipsecrequest
)) +
1930 pfkey_xfrm_policy2sec_ctx_size(xp
);
1933 static struct sk_buff
* pfkey_xfrm_policy2msg_prep(struct xfrm_policy
*xp
)
1935 struct sk_buff
*skb
;
1938 size
= pfkey_xfrm_policy2msg_size(xp
);
1940 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
1942 return ERR_PTR(-ENOBUFS
);
1947 static int pfkey_xfrm_policy2msg(struct sk_buff
*skb
, struct xfrm_policy
*xp
, int dir
)
1949 struct sadb_msg
*hdr
;
1950 struct sadb_address
*addr
;
1951 struct sadb_lifetime
*lifetime
;
1952 struct sadb_x_policy
*pol
;
1953 struct sadb_x_sec_ctx
*sec_ctx
;
1954 struct xfrm_sec_ctx
*xfrm_ctx
;
1957 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
1958 int socklen
= pfkey_sockaddr_len(xp
->family
);
1960 size
= pfkey_xfrm_policy2msg_size(xp
);
1962 /* call should fill header later */
1963 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
1964 memset(hdr
, 0, size
); /* XXX do we need this ? */
1967 addr
= (struct sadb_address
*) skb_put(skb
,
1968 sizeof(struct sadb_address
)+sockaddr_size
);
1969 addr
->sadb_address_len
=
1970 (sizeof(struct sadb_address
)+sockaddr_size
)/
1972 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
1973 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
1974 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_s
;
1975 addr
->sadb_address_reserved
= 0;
1976 if (!pfkey_sockaddr_fill(&xp
->selector
.saddr
,
1978 (struct sockaddr
*) (addr
+ 1),
1983 addr
= (struct sadb_address
*) skb_put(skb
,
1984 sizeof(struct sadb_address
)+sockaddr_size
);
1985 addr
->sadb_address_len
=
1986 (sizeof(struct sadb_address
)+sockaddr_size
)/
1988 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
1989 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
1990 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_d
;
1991 addr
->sadb_address_reserved
= 0;
1993 pfkey_sockaddr_fill(&xp
->selector
.daddr
, xp
->selector
.dport
,
1994 (struct sockaddr
*) (addr
+ 1),
1998 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
1999 sizeof(struct sadb_lifetime
));
2000 lifetime
->sadb_lifetime_len
=
2001 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2002 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
2003 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.hard_packet_limit
);
2004 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.hard_byte_limit
);
2005 lifetime
->sadb_lifetime_addtime
= xp
->lft
.hard_add_expires_seconds
;
2006 lifetime
->sadb_lifetime_usetime
= xp
->lft
.hard_use_expires_seconds
;
2008 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2009 sizeof(struct sadb_lifetime
));
2010 lifetime
->sadb_lifetime_len
=
2011 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2012 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
2013 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.soft_packet_limit
);
2014 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.soft_byte_limit
);
2015 lifetime
->sadb_lifetime_addtime
= xp
->lft
.soft_add_expires_seconds
;
2016 lifetime
->sadb_lifetime_usetime
= xp
->lft
.soft_use_expires_seconds
;
2018 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2019 sizeof(struct sadb_lifetime
));
2020 lifetime
->sadb_lifetime_len
=
2021 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2022 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
2023 lifetime
->sadb_lifetime_allocations
= xp
->curlft
.packets
;
2024 lifetime
->sadb_lifetime_bytes
= xp
->curlft
.bytes
;
2025 lifetime
->sadb_lifetime_addtime
= xp
->curlft
.add_time
;
2026 lifetime
->sadb_lifetime_usetime
= xp
->curlft
.use_time
;
2028 pol
= (struct sadb_x_policy
*) skb_put(skb
, sizeof(struct sadb_x_policy
));
2029 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
2030 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
2031 pol
->sadb_x_policy_type
= IPSEC_POLICY_DISCARD
;
2032 if (xp
->action
== XFRM_POLICY_ALLOW
) {
2034 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
2036 pol
->sadb_x_policy_type
= IPSEC_POLICY_NONE
;
2038 pol
->sadb_x_policy_dir
= dir
+1;
2039 pol
->sadb_x_policy_id
= xp
->index
;
2040 pol
->sadb_x_policy_priority
= xp
->priority
;
2042 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
2043 struct sadb_x_ipsecrequest
*rq
;
2044 struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ i
;
2048 req_size
= sizeof(struct sadb_x_ipsecrequest
);
2049 if (t
->mode
== XFRM_MODE_TUNNEL
) {
2050 socklen
= pfkey_sockaddr_len(t
->encap_family
);
2051 req_size
+= socklen
* 2;
2056 rq
= (void*)skb_put(skb
, req_size
);
2057 pol
->sadb_x_policy_len
+= req_size
/8;
2058 memset(rq
, 0, sizeof(*rq
));
2059 rq
->sadb_x_ipsecrequest_len
= req_size
;
2060 rq
->sadb_x_ipsecrequest_proto
= t
->id
.proto
;
2061 if ((mode
= pfkey_mode_from_xfrm(t
->mode
)) < 0)
2063 rq
->sadb_x_ipsecrequest_mode
= mode
;
2064 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_REQUIRE
;
2066 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_UNIQUE
;
2068 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_USE
;
2069 rq
->sadb_x_ipsecrequest_reqid
= t
->reqid
;
2071 if (t
->mode
== XFRM_MODE_TUNNEL
) {
2072 u8
*sa
= (void *)(rq
+ 1);
2073 pfkey_sockaddr_fill(&t
->saddr
, 0,
2074 (struct sockaddr
*)sa
,
2076 pfkey_sockaddr_fill(&t
->id
.daddr
, 0,
2077 (struct sockaddr
*) (sa
+ socklen
),
2082 /* security context */
2083 if ((xfrm_ctx
= xp
->security
)) {
2084 int ctx_size
= pfkey_xfrm_policy2sec_ctx_size(xp
);
2086 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
, ctx_size
);
2087 sec_ctx
->sadb_x_sec_len
= ctx_size
/ sizeof(uint64_t);
2088 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
2089 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
2090 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
2091 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
2092 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
2096 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
2097 hdr
->sadb_msg_reserved
= atomic_read(&xp
->refcnt
);
2102 static int key_notify_policy(struct xfrm_policy
*xp
, int dir
, struct km_event
*c
)
2104 struct sk_buff
*out_skb
;
2105 struct sadb_msg
*out_hdr
;
2108 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2109 if (IS_ERR(out_skb
)) {
2110 err
= PTR_ERR(out_skb
);
2113 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2117 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2118 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
2120 if (c
->data
.byid
&& c
->event
== XFRM_MSG_DELPOLICY
)
2121 out_hdr
->sadb_msg_type
= SADB_X_SPDDELETE2
;
2123 out_hdr
->sadb_msg_type
= event2poltype(c
->event
);
2124 out_hdr
->sadb_msg_errno
= 0;
2125 out_hdr
->sadb_msg_seq
= c
->seq
;
2126 out_hdr
->sadb_msg_pid
= c
->pid
;
2127 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
2133 static int pfkey_spdadd(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2136 struct sadb_lifetime
*lifetime
;
2137 struct sadb_address
*sa
;
2138 struct sadb_x_policy
*pol
;
2139 struct xfrm_policy
*xp
;
2141 struct sadb_x_sec_ctx
*sec_ctx
;
2143 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2144 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2145 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2148 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2149 if (pol
->sadb_x_policy_type
> IPSEC_POLICY_IPSEC
)
2151 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2154 xp
= xfrm_policy_alloc(GFP_KERNEL
);
2158 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
2159 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
2160 xp
->priority
= pol
->sadb_x_policy_priority
;
2162 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2163 xp
->family
= pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.saddr
);
2168 xp
->selector
.family
= xp
->family
;
2169 xp
->selector
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2170 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2171 xp
->selector
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2172 if (xp
->selector
.sport
)
2173 xp
->selector
.sport_mask
= htons(0xffff);
2175 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
2176 pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.daddr
);
2177 xp
->selector
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2179 /* Amusing, we set this twice. KAME apps appear to set same value
2180 * in both addresses.
2182 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2184 xp
->selector
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2185 if (xp
->selector
.dport
)
2186 xp
->selector
.dport_mask
= htons(0xffff);
2188 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
2189 if (sec_ctx
!= NULL
) {
2190 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2197 err
= security_xfrm_policy_alloc(&xp
->security
, uctx
);
2204 xp
->lft
.soft_byte_limit
= XFRM_INF
;
2205 xp
->lft
.hard_byte_limit
= XFRM_INF
;
2206 xp
->lft
.soft_packet_limit
= XFRM_INF
;
2207 xp
->lft
.hard_packet_limit
= XFRM_INF
;
2208 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1]) != NULL
) {
2209 xp
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2210 xp
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2211 xp
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2212 xp
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2214 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1]) != NULL
) {
2215 xp
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2216 xp
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2217 xp
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2218 xp
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2221 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
2222 (err
= parse_ipsecrequests(xp
, pol
)) < 0)
2225 err
= xfrm_policy_insert(pol
->sadb_x_policy_dir
-1, xp
,
2226 hdr
->sadb_msg_type
!= SADB_X_SPDUPDATE
);
2228 xfrm_audit_policy_add(xp
, err
? 0 : 1,
2229 audit_get_loginuid(current
),
2230 audit_get_sessionid(current
), 0);
2235 if (hdr
->sadb_msg_type
== SADB_X_SPDUPDATE
)
2236 c
.event
= XFRM_MSG_UPDPOLICY
;
2238 c
.event
= XFRM_MSG_NEWPOLICY
;
2240 c
.seq
= hdr
->sadb_msg_seq
;
2241 c
.pid
= hdr
->sadb_msg_pid
;
2243 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2249 xfrm_policy_destroy(xp
);
2253 static int pfkey_spddelete(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2256 struct sadb_address
*sa
;
2257 struct sadb_x_policy
*pol
;
2258 struct xfrm_policy
*xp
;
2259 struct xfrm_selector sel
;
2261 struct sadb_x_sec_ctx
*sec_ctx
;
2262 struct xfrm_sec_ctx
*pol_ctx
= NULL
;
2264 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2265 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2266 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2269 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2270 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2273 memset(&sel
, 0, sizeof(sel
));
2275 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2276 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2277 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2278 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2279 sel
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2281 sel
.sport_mask
= htons(0xffff);
2283 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
2284 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2285 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2286 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2287 sel
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2289 sel
.dport_mask
= htons(0xffff);
2291 sec_ctx
= (struct sadb_x_sec_ctx
*) ext_hdrs
[SADB_X_EXT_SEC_CTX
-1];
2292 if (sec_ctx
!= NULL
) {
2293 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2298 err
= security_xfrm_policy_alloc(&pol_ctx
, uctx
);
2304 xp
= xfrm_policy_bysel_ctx(XFRM_POLICY_TYPE_MAIN
,
2305 pol
->sadb_x_policy_dir
- 1, &sel
, pol_ctx
,
2307 security_xfrm_policy_free(pol_ctx
);
2311 xfrm_audit_policy_delete(xp
, err
? 0 : 1,
2312 audit_get_loginuid(current
),
2313 audit_get_sessionid(current
), 0);
2318 c
.seq
= hdr
->sadb_msg_seq
;
2319 c
.pid
= hdr
->sadb_msg_pid
;
2320 c
.event
= XFRM_MSG_DELPOLICY
;
2321 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2328 static int key_pol_get_resp(struct sock
*sk
, struct xfrm_policy
*xp
, struct sadb_msg
*hdr
, int dir
)
2331 struct sk_buff
*out_skb
;
2332 struct sadb_msg
*out_hdr
;
2335 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2336 if (IS_ERR(out_skb
)) {
2337 err
= PTR_ERR(out_skb
);
2340 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2344 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2345 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
2346 out_hdr
->sadb_msg_type
= hdr
->sadb_msg_type
;
2347 out_hdr
->sadb_msg_satype
= 0;
2348 out_hdr
->sadb_msg_errno
= 0;
2349 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
2350 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
2351 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
);
2358 #ifdef CONFIG_NET_KEY_MIGRATE
2359 static int pfkey_sockaddr_pair_size(sa_family_t family
)
2361 return PFKEY_ALIGN8(pfkey_sockaddr_len(family
) * 2);
2364 static int parse_sockaddr_pair(struct sadb_x_ipsecrequest
*rq
,
2365 xfrm_address_t
*saddr
, xfrm_address_t
*daddr
,
2368 u8
*sa
= (u8
*) (rq
+ 1);
2371 if (rq
->sadb_x_ipsecrequest_len
<
2372 pfkey_sockaddr_pair_size(((struct sockaddr
*)sa
)->sa_family
))
2375 af
= pfkey_sockaddr_extract((struct sockaddr
*) sa
,
2380 socklen
= pfkey_sockaddr_len(af
);
2381 if (pfkey_sockaddr_extract((struct sockaddr
*) (sa
+ socklen
),
2389 static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest
*rq1
, int len
,
2390 struct xfrm_migrate
*m
)
2393 struct sadb_x_ipsecrequest
*rq2
;
2396 if (len
<= sizeof(struct sadb_x_ipsecrequest
) ||
2397 len
< rq1
->sadb_x_ipsecrequest_len
)
2401 err
= parse_sockaddr_pair(rq1
, &m
->old_saddr
, &m
->old_daddr
,
2406 rq2
= (struct sadb_x_ipsecrequest
*)((u8
*)rq1
+ rq1
->sadb_x_ipsecrequest_len
);
2407 len
-= rq1
->sadb_x_ipsecrequest_len
;
2409 if (len
<= sizeof(struct sadb_x_ipsecrequest
) ||
2410 len
< rq2
->sadb_x_ipsecrequest_len
)
2414 err
= parse_sockaddr_pair(rq2
, &m
->new_saddr
, &m
->new_daddr
,
2419 if (rq1
->sadb_x_ipsecrequest_proto
!= rq2
->sadb_x_ipsecrequest_proto
||
2420 rq1
->sadb_x_ipsecrequest_mode
!= rq2
->sadb_x_ipsecrequest_mode
||
2421 rq1
->sadb_x_ipsecrequest_reqid
!= rq2
->sadb_x_ipsecrequest_reqid
)
2424 m
->proto
= rq1
->sadb_x_ipsecrequest_proto
;
2425 if ((mode
= pfkey_mode_to_xfrm(rq1
->sadb_x_ipsecrequest_mode
)) < 0)
2428 m
->reqid
= rq1
->sadb_x_ipsecrequest_reqid
;
2430 return ((int)(rq1
->sadb_x_ipsecrequest_len
+
2431 rq2
->sadb_x_ipsecrequest_len
));
2434 static int pfkey_migrate(struct sock
*sk
, struct sk_buff
*skb
,
2435 struct sadb_msg
*hdr
, void **ext_hdrs
)
2437 int i
, len
, ret
, err
= -EINVAL
;
2439 struct sadb_address
*sa
;
2440 struct sadb_x_policy
*pol
;
2441 struct sadb_x_ipsecrequest
*rq
;
2442 struct xfrm_selector sel
;
2443 struct xfrm_migrate m
[XFRM_MAX_DEPTH
];
2445 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
- 1],
2446 ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1]) ||
2447 !ext_hdrs
[SADB_X_EXT_POLICY
- 1]) {
2452 pol
= ext_hdrs
[SADB_X_EXT_POLICY
- 1];
2458 if (pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
) {
2463 dir
= pol
->sadb_x_policy_dir
- 1;
2464 memset(&sel
, 0, sizeof(sel
));
2466 /* set source address info of selector */
2467 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
- 1];
2468 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2469 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2470 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2471 sel
.sport
= ((struct sockaddr_in
*)(sa
+ 1))->sin_port
;
2473 sel
.sport_mask
= htons(0xffff);
2475 /* set destination address info of selector */
2476 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1],
2477 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2478 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2479 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2480 sel
.dport
= ((struct sockaddr_in
*)(sa
+ 1))->sin_port
;
2482 sel
.dport_mask
= htons(0xffff);
2484 rq
= (struct sadb_x_ipsecrequest
*)(pol
+ 1);
2486 /* extract ipsecrequests */
2488 len
= pol
->sadb_x_policy_len
* 8 - sizeof(struct sadb_x_policy
);
2490 while (len
> 0 && i
< XFRM_MAX_DEPTH
) {
2491 ret
= ipsecrequests_to_migrate(rq
, len
, &m
[i
]);
2496 rq
= (struct sadb_x_ipsecrequest
*)((u8
*)rq
+ ret
);
2502 if (!i
|| len
> 0) {
2507 return xfrm_migrate(&sel
, dir
, XFRM_POLICY_TYPE_MAIN
, m
, i
);
2513 static int pfkey_migrate(struct sock
*sk
, struct sk_buff
*skb
,
2514 struct sadb_msg
*hdr
, void **ext_hdrs
)
2516 return -ENOPROTOOPT
;
2521 static int pfkey_spdget(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2524 int err
= 0, delete;
2525 struct sadb_x_policy
*pol
;
2526 struct xfrm_policy
*xp
;
2529 if ((pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1]) == NULL
)
2532 dir
= xfrm_policy_id2dir(pol
->sadb_x_policy_id
);
2533 if (dir
>= XFRM_POLICY_MAX
)
2536 delete = (hdr
->sadb_msg_type
== SADB_X_SPDDELETE2
);
2537 xp
= xfrm_policy_byid(XFRM_POLICY_TYPE_MAIN
, dir
, pol
->sadb_x_policy_id
,
2543 xfrm_audit_policy_delete(xp
, err
? 0 : 1,
2544 audit_get_loginuid(current
),
2545 audit_get_sessionid(current
), 0);
2549 c
.seq
= hdr
->sadb_msg_seq
;
2550 c
.pid
= hdr
->sadb_msg_pid
;
2552 c
.event
= XFRM_MSG_DELPOLICY
;
2553 km_policy_notify(xp
, dir
, &c
);
2555 err
= key_pol_get_resp(sk
, xp
, hdr
, dir
);
2563 static int dump_sp(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
2565 struct pfkey_sock
*pfk
= ptr
;
2566 struct sk_buff
*out_skb
;
2567 struct sadb_msg
*out_hdr
;
2570 if (!pfkey_can_dump(&pfk
->sk
))
2573 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2574 if (IS_ERR(out_skb
))
2575 return PTR_ERR(out_skb
);
2577 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2581 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2582 out_hdr
->sadb_msg_version
= pfk
->dump
.msg_version
;
2583 out_hdr
->sadb_msg_type
= SADB_X_SPDDUMP
;
2584 out_hdr
->sadb_msg_satype
= SADB_SATYPE_UNSPEC
;
2585 out_hdr
->sadb_msg_errno
= 0;
2586 out_hdr
->sadb_msg_seq
= count
;
2587 out_hdr
->sadb_msg_pid
= pfk
->dump
.msg_pid
;
2588 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, &pfk
->sk
);
2592 static int pfkey_dump_sp(struct pfkey_sock
*pfk
)
2594 return xfrm_policy_walk(&pfk
->dump
.u
.policy
, dump_sp
, (void *) pfk
);
2597 static void pfkey_dump_sp_done(struct pfkey_sock
*pfk
)
2599 xfrm_policy_walk_done(&pfk
->dump
.u
.policy
);
2602 static int pfkey_spddump(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2604 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
2606 if (pfk
->dump
.dump
!= NULL
)
2609 pfk
->dump
.msg_version
= hdr
->sadb_msg_version
;
2610 pfk
->dump
.msg_pid
= hdr
->sadb_msg_pid
;
2611 pfk
->dump
.dump
= pfkey_dump_sp
;
2612 pfk
->dump
.done
= pfkey_dump_sp_done
;
2613 xfrm_policy_walk_init(&pfk
->dump
.u
.policy
, XFRM_POLICY_TYPE_MAIN
);
2615 return pfkey_do_dump(pfk
);
2618 static int key_notify_policy_flush(struct km_event
*c
)
2620 struct sk_buff
*skb_out
;
2621 struct sadb_msg
*hdr
;
2623 skb_out
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
2626 hdr
= (struct sadb_msg
*) skb_put(skb_out
, sizeof(struct sadb_msg
));
2627 hdr
->sadb_msg_type
= SADB_X_SPDFLUSH
;
2628 hdr
->sadb_msg_seq
= c
->seq
;
2629 hdr
->sadb_msg_pid
= c
->pid
;
2630 hdr
->sadb_msg_version
= PF_KEY_V2
;
2631 hdr
->sadb_msg_errno
= (uint8_t) 0;
2632 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
2633 pfkey_broadcast(skb_out
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
2638 static int pfkey_spdflush(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
, void **ext_hdrs
)
2641 struct xfrm_audit audit_info
;
2644 audit_info
.loginuid
= audit_get_loginuid(current
);
2645 audit_info
.sessionid
= audit_get_sessionid(current
);
2646 audit_info
.secid
= 0;
2647 err
= xfrm_policy_flush(XFRM_POLICY_TYPE_MAIN
, &audit_info
);
2650 c
.data
.type
= XFRM_POLICY_TYPE_MAIN
;
2651 c
.event
= XFRM_MSG_FLUSHPOLICY
;
2652 c
.pid
= hdr
->sadb_msg_pid
;
2653 c
.seq
= hdr
->sadb_msg_seq
;
2654 km_policy_notify(NULL
, 0, &c
);
2659 typedef int (*pfkey_handler
)(struct sock
*sk
, struct sk_buff
*skb
,
2660 struct sadb_msg
*hdr
, void **ext_hdrs
);
2661 static pfkey_handler pfkey_funcs
[SADB_MAX
+ 1] = {
2662 [SADB_RESERVED
] = pfkey_reserved
,
2663 [SADB_GETSPI
] = pfkey_getspi
,
2664 [SADB_UPDATE
] = pfkey_add
,
2665 [SADB_ADD
] = pfkey_add
,
2666 [SADB_DELETE
] = pfkey_delete
,
2667 [SADB_GET
] = pfkey_get
,
2668 [SADB_ACQUIRE
] = pfkey_acquire
,
2669 [SADB_REGISTER
] = pfkey_register
,
2670 [SADB_EXPIRE
] = NULL
,
2671 [SADB_FLUSH
] = pfkey_flush
,
2672 [SADB_DUMP
] = pfkey_dump
,
2673 [SADB_X_PROMISC
] = pfkey_promisc
,
2674 [SADB_X_PCHANGE
] = NULL
,
2675 [SADB_X_SPDUPDATE
] = pfkey_spdadd
,
2676 [SADB_X_SPDADD
] = pfkey_spdadd
,
2677 [SADB_X_SPDDELETE
] = pfkey_spddelete
,
2678 [SADB_X_SPDGET
] = pfkey_spdget
,
2679 [SADB_X_SPDACQUIRE
] = NULL
,
2680 [SADB_X_SPDDUMP
] = pfkey_spddump
,
2681 [SADB_X_SPDFLUSH
] = pfkey_spdflush
,
2682 [SADB_X_SPDSETIDX
] = pfkey_spdadd
,
2683 [SADB_X_SPDDELETE2
] = pfkey_spdget
,
2684 [SADB_X_MIGRATE
] = pfkey_migrate
,
2687 static int pfkey_process(struct sock
*sk
, struct sk_buff
*skb
, struct sadb_msg
*hdr
)
2689 void *ext_hdrs
[SADB_EXT_MAX
];
2692 pfkey_broadcast(skb_clone(skb
, GFP_KERNEL
), GFP_KERNEL
,
2693 BROADCAST_PROMISC_ONLY
, NULL
);
2695 memset(ext_hdrs
, 0, sizeof(ext_hdrs
));
2696 err
= parse_exthdrs(skb
, hdr
, ext_hdrs
);
2699 if (pfkey_funcs
[hdr
->sadb_msg_type
])
2700 err
= pfkey_funcs
[hdr
->sadb_msg_type
](sk
, skb
, hdr
, ext_hdrs
);
2705 static struct sadb_msg
*pfkey_get_base_msg(struct sk_buff
*skb
, int *errp
)
2707 struct sadb_msg
*hdr
= NULL
;
2709 if (skb
->len
< sizeof(*hdr
)) {
2712 hdr
= (struct sadb_msg
*) skb
->data
;
2713 if (hdr
->sadb_msg_version
!= PF_KEY_V2
||
2714 hdr
->sadb_msg_reserved
!= 0 ||
2715 (hdr
->sadb_msg_type
<= SADB_RESERVED
||
2716 hdr
->sadb_msg_type
> SADB_MAX
)) {
2719 } else if (hdr
->sadb_msg_len
!= (skb
->len
/
2720 sizeof(uint64_t)) ||
2721 hdr
->sadb_msg_len
< (sizeof(struct sadb_msg
) /
2722 sizeof(uint64_t))) {
2732 static inline int aalg_tmpl_set(struct xfrm_tmpl
*t
, struct xfrm_algo_desc
*d
)
2734 unsigned int id
= d
->desc
.sadb_alg_id
;
2736 if (id
>= sizeof(t
->aalgos
) * 8)
2739 return (t
->aalgos
>> id
) & 1;
2742 static inline int ealg_tmpl_set(struct xfrm_tmpl
*t
, struct xfrm_algo_desc
*d
)
2744 unsigned int id
= d
->desc
.sadb_alg_id
;
2746 if (id
>= sizeof(t
->ealgos
) * 8)
2749 return (t
->ealgos
>> id
) & 1;
2752 static int count_ah_combs(struct xfrm_tmpl
*t
)
2756 for (i
= 0; ; i
++) {
2757 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2760 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2761 sz
+= sizeof(struct sadb_comb
);
2763 return sz
+ sizeof(struct sadb_prop
);
2766 static int count_esp_combs(struct xfrm_tmpl
*t
)
2770 for (i
= 0; ; i
++) {
2771 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2775 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2778 for (k
= 1; ; k
++) {
2779 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2783 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2784 sz
+= sizeof(struct sadb_comb
);
2787 return sz
+ sizeof(struct sadb_prop
);
2790 static void dump_ah_combs(struct sk_buff
*skb
, struct xfrm_tmpl
*t
)
2792 struct sadb_prop
*p
;
2795 p
= (struct sadb_prop
*)skb_put(skb
, sizeof(struct sadb_prop
));
2796 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2797 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2798 p
->sadb_prop_replay
= 32;
2799 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2801 for (i
= 0; ; i
++) {
2802 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2806 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
) {
2807 struct sadb_comb
*c
;
2808 c
= (struct sadb_comb
*)skb_put(skb
, sizeof(struct sadb_comb
));
2809 memset(c
, 0, sizeof(*c
));
2810 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2811 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2812 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2813 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2814 c
->sadb_comb_hard_addtime
= 24*60*60;
2815 c
->sadb_comb_soft_addtime
= 20*60*60;
2816 c
->sadb_comb_hard_usetime
= 8*60*60;
2817 c
->sadb_comb_soft_usetime
= 7*60*60;
2822 static void dump_esp_combs(struct sk_buff
*skb
, struct xfrm_tmpl
*t
)
2824 struct sadb_prop
*p
;
2827 p
= (struct sadb_prop
*)skb_put(skb
, sizeof(struct sadb_prop
));
2828 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2829 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2830 p
->sadb_prop_replay
= 32;
2831 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2834 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2838 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2841 for (k
= 1; ; k
++) {
2842 struct sadb_comb
*c
;
2843 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2846 if (!(aalg_tmpl_set(t
, aalg
) && aalg
->available
))
2848 c
= (struct sadb_comb
*)skb_put(skb
, sizeof(struct sadb_comb
));
2849 memset(c
, 0, sizeof(*c
));
2850 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2851 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2852 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2853 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2854 c
->sadb_comb_encrypt
= ealg
->desc
.sadb_alg_id
;
2855 c
->sadb_comb_encrypt_minbits
= ealg
->desc
.sadb_alg_minbits
;
2856 c
->sadb_comb_encrypt_maxbits
= ealg
->desc
.sadb_alg_maxbits
;
2857 c
->sadb_comb_hard_addtime
= 24*60*60;
2858 c
->sadb_comb_soft_addtime
= 20*60*60;
2859 c
->sadb_comb_hard_usetime
= 8*60*60;
2860 c
->sadb_comb_soft_usetime
= 7*60*60;
2865 static int key_notify_policy_expire(struct xfrm_policy
*xp
, struct km_event
*c
)
2870 static int key_notify_sa_expire(struct xfrm_state
*x
, struct km_event
*c
)
2872 struct sk_buff
*out_skb
;
2873 struct sadb_msg
*out_hdr
;
2877 hard
= c
->data
.hard
;
2883 out_skb
= pfkey_xfrm_state2msg_expire(x
, hsc
);
2884 if (IS_ERR(out_skb
))
2885 return PTR_ERR(out_skb
);
2887 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2888 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
2889 out_hdr
->sadb_msg_type
= SADB_EXPIRE
;
2890 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
2891 out_hdr
->sadb_msg_errno
= 0;
2892 out_hdr
->sadb_msg_reserved
= 0;
2893 out_hdr
->sadb_msg_seq
= 0;
2894 out_hdr
->sadb_msg_pid
= 0;
2896 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
2900 static int pfkey_send_notify(struct xfrm_state
*x
, struct km_event
*c
)
2902 if (atomic_read(&pfkey_socks_nr
) == 0)
2906 case XFRM_MSG_EXPIRE
:
2907 return key_notify_sa_expire(x
, c
);
2908 case XFRM_MSG_DELSA
:
2909 case XFRM_MSG_NEWSA
:
2910 case XFRM_MSG_UPDSA
:
2911 return key_notify_sa(x
, c
);
2912 case XFRM_MSG_FLUSHSA
:
2913 return key_notify_sa_flush(c
);
2914 case XFRM_MSG_NEWAE
: /* not yet supported */
2917 printk("pfkey: Unknown SA event %d\n", c
->event
);
2924 static int pfkey_send_policy_notify(struct xfrm_policy
*xp
, int dir
, struct km_event
*c
)
2926 if (xp
&& xp
->type
!= XFRM_POLICY_TYPE_MAIN
)
2930 case XFRM_MSG_POLEXPIRE
:
2931 return key_notify_policy_expire(xp
, c
);
2932 case XFRM_MSG_DELPOLICY
:
2933 case XFRM_MSG_NEWPOLICY
:
2934 case XFRM_MSG_UPDPOLICY
:
2935 return key_notify_policy(xp
, dir
, c
);
2936 case XFRM_MSG_FLUSHPOLICY
:
2937 if (c
->data
.type
!= XFRM_POLICY_TYPE_MAIN
)
2939 return key_notify_policy_flush(c
);
2941 printk("pfkey: Unknown policy event %d\n", c
->event
);
2948 static u32
get_acqseq(void)
2952 static DEFINE_SPINLOCK(acqseq_lock
);
2954 spin_lock_bh(&acqseq_lock
);
2955 res
= (++acqseq
? : ++acqseq
);
2956 spin_unlock_bh(&acqseq_lock
);
2960 static int pfkey_send_acquire(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*xp
, int dir
)
2962 struct sk_buff
*skb
;
2963 struct sadb_msg
*hdr
;
2964 struct sadb_address
*addr
;
2965 struct sadb_x_policy
*pol
;
2968 struct sadb_x_sec_ctx
*sec_ctx
;
2969 struct xfrm_sec_ctx
*xfrm_ctx
;
2972 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
2976 size
= sizeof(struct sadb_msg
) +
2977 (sizeof(struct sadb_address
) * 2) +
2978 (sockaddr_size
* 2) +
2979 sizeof(struct sadb_x_policy
);
2981 if (x
->id
.proto
== IPPROTO_AH
)
2982 size
+= count_ah_combs(t
);
2983 else if (x
->id
.proto
== IPPROTO_ESP
)
2984 size
+= count_esp_combs(t
);
2986 if ((xfrm_ctx
= x
->security
)) {
2987 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
2988 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
2991 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
2995 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
2996 hdr
->sadb_msg_version
= PF_KEY_V2
;
2997 hdr
->sadb_msg_type
= SADB_ACQUIRE
;
2998 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
2999 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3000 hdr
->sadb_msg_errno
= 0;
3001 hdr
->sadb_msg_reserved
= 0;
3002 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3003 hdr
->sadb_msg_pid
= 0;
3006 addr
= (struct sadb_address
*) skb_put(skb
,
3007 sizeof(struct sadb_address
)+sockaddr_size
);
3008 addr
->sadb_address_len
=
3009 (sizeof(struct sadb_address
)+sockaddr_size
)/
3011 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3012 addr
->sadb_address_proto
= 0;
3013 addr
->sadb_address_reserved
= 0;
3014 addr
->sadb_address_prefixlen
=
3015 pfkey_sockaddr_fill(&x
->props
.saddr
, 0,
3016 (struct sockaddr
*) (addr
+ 1),
3018 if (!addr
->sadb_address_prefixlen
)
3022 addr
= (struct sadb_address
*) skb_put(skb
,
3023 sizeof(struct sadb_address
)+sockaddr_size
);
3024 addr
->sadb_address_len
=
3025 (sizeof(struct sadb_address
)+sockaddr_size
)/
3027 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3028 addr
->sadb_address_proto
= 0;
3029 addr
->sadb_address_reserved
= 0;
3030 addr
->sadb_address_prefixlen
=
3031 pfkey_sockaddr_fill(&x
->id
.daddr
, 0,
3032 (struct sockaddr
*) (addr
+ 1),
3034 if (!addr
->sadb_address_prefixlen
)
3037 pol
= (struct sadb_x_policy
*) skb_put(skb
, sizeof(struct sadb_x_policy
));
3038 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
3039 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
3040 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
3041 pol
->sadb_x_policy_dir
= dir
+1;
3042 pol
->sadb_x_policy_id
= xp
->index
;
3044 /* Set sadb_comb's. */
3045 if (x
->id
.proto
== IPPROTO_AH
)
3046 dump_ah_combs(skb
, t
);
3047 else if (x
->id
.proto
== IPPROTO_ESP
)
3048 dump_esp_combs(skb
, t
);
3050 /* security context */
3052 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
,
3053 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
3054 sec_ctx
->sadb_x_sec_len
=
3055 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
3056 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
3057 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
3058 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
3059 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
3060 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
3064 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
3067 static struct xfrm_policy
*pfkey_compile_policy(struct sock
*sk
, int opt
,
3068 u8
*data
, int len
, int *dir
)
3070 struct xfrm_policy
*xp
;
3071 struct sadb_x_policy
*pol
= (struct sadb_x_policy
*)data
;
3072 struct sadb_x_sec_ctx
*sec_ctx
;
3074 switch (sk
->sk_family
) {
3076 if (opt
!= IP_IPSEC_POLICY
) {
3081 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3083 if (opt
!= IPV6_IPSEC_POLICY
) {
3096 if (len
< sizeof(struct sadb_x_policy
) ||
3097 pol
->sadb_x_policy_len
*8 > len
||
3098 pol
->sadb_x_policy_type
> IPSEC_POLICY_BYPASS
||
3099 (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
> IPSEC_DIR_OUTBOUND
))
3102 xp
= xfrm_policy_alloc(GFP_ATOMIC
);
3108 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
3109 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
3111 xp
->lft
.soft_byte_limit
= XFRM_INF
;
3112 xp
->lft
.hard_byte_limit
= XFRM_INF
;
3113 xp
->lft
.soft_packet_limit
= XFRM_INF
;
3114 xp
->lft
.hard_packet_limit
= XFRM_INF
;
3115 xp
->family
= sk
->sk_family
;
3118 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
3119 (*dir
= parse_ipsecrequests(xp
, pol
)) < 0)
3122 /* security context too */
3123 if (len
>= (pol
->sadb_x_policy_len
*8 +
3124 sizeof(struct sadb_x_sec_ctx
))) {
3125 char *p
= (char *)pol
;
3126 struct xfrm_user_sec_ctx
*uctx
;
3128 p
+= pol
->sadb_x_policy_len
*8;
3129 sec_ctx
= (struct sadb_x_sec_ctx
*)p
;
3130 if (len
< pol
->sadb_x_policy_len
*8 +
3131 sec_ctx
->sadb_x_sec_len
) {
3135 if ((*dir
= verify_sec_ctx_len(p
)))
3137 uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
3138 *dir
= security_xfrm_policy_alloc(&xp
->security
, uctx
);
3145 *dir
= pol
->sadb_x_policy_dir
-1;
3149 xfrm_policy_destroy(xp
);
3153 static int pfkey_send_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
3155 struct sk_buff
*skb
;
3156 struct sadb_msg
*hdr
;
3158 struct sadb_address
*addr
;
3159 struct sadb_x_nat_t_port
*n_port
;
3162 __u8 satype
= (x
->id
.proto
== IPPROTO_ESP
? SADB_SATYPE_ESP
: 0);
3163 struct xfrm_encap_tmpl
*natt
= NULL
;
3165 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
3177 /* Build an SADB_X_NAT_T_NEW_MAPPING message:
3179 * HDR | SA | ADDRESS_SRC (old addr) | NAT_T_SPORT (old port) |
3180 * ADDRESS_DST (new addr) | NAT_T_DPORT (new port)
3183 size
= sizeof(struct sadb_msg
) +
3184 sizeof(struct sadb_sa
) +
3185 (sizeof(struct sadb_address
) * 2) +
3186 (sockaddr_size
* 2) +
3187 (sizeof(struct sadb_x_nat_t_port
) * 2);
3189 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
3193 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
3194 hdr
->sadb_msg_version
= PF_KEY_V2
;
3195 hdr
->sadb_msg_type
= SADB_X_NAT_T_NEW_MAPPING
;
3196 hdr
->sadb_msg_satype
= satype
;
3197 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3198 hdr
->sadb_msg_errno
= 0;
3199 hdr
->sadb_msg_reserved
= 0;
3200 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3201 hdr
->sadb_msg_pid
= 0;
3204 sa
= (struct sadb_sa
*) skb_put(skb
, sizeof(struct sadb_sa
));
3205 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
3206 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
3207 sa
->sadb_sa_spi
= x
->id
.spi
;
3208 sa
->sadb_sa_replay
= 0;
3209 sa
->sadb_sa_state
= 0;
3210 sa
->sadb_sa_auth
= 0;
3211 sa
->sadb_sa_encrypt
= 0;
3212 sa
->sadb_sa_flags
= 0;
3214 /* ADDRESS_SRC (old addr) */
3215 addr
= (struct sadb_address
*)
3216 skb_put(skb
, sizeof(struct sadb_address
)+sockaddr_size
);
3217 addr
->sadb_address_len
=
3218 (sizeof(struct sadb_address
)+sockaddr_size
)/
3220 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3221 addr
->sadb_address_proto
= 0;
3222 addr
->sadb_address_reserved
= 0;
3223 addr
->sadb_address_prefixlen
=
3224 pfkey_sockaddr_fill(&x
->props
.saddr
, 0,
3225 (struct sockaddr
*) (addr
+ 1),
3227 if (!addr
->sadb_address_prefixlen
)
3230 /* NAT_T_SPORT (old port) */
3231 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
3232 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3233 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
3234 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
3235 n_port
->sadb_x_nat_t_port_reserved
= 0;
3237 /* ADDRESS_DST (new addr) */
3238 addr
= (struct sadb_address
*)
3239 skb_put(skb
, sizeof(struct sadb_address
)+sockaddr_size
);
3240 addr
->sadb_address_len
=
3241 (sizeof(struct sadb_address
)+sockaddr_size
)/
3243 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3244 addr
->sadb_address_proto
= 0;
3245 addr
->sadb_address_reserved
= 0;
3246 addr
->sadb_address_prefixlen
=
3247 pfkey_sockaddr_fill(ipaddr
, 0,
3248 (struct sockaddr
*) (addr
+ 1),
3250 if (!addr
->sadb_address_prefixlen
)
3253 /* NAT_T_DPORT (new port) */
3254 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
3255 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3256 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
3257 n_port
->sadb_x_nat_t_port_port
= sport
;
3258 n_port
->sadb_x_nat_t_port_reserved
= 0;
3260 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
);
3263 #ifdef CONFIG_NET_KEY_MIGRATE
3264 static int set_sadb_address(struct sk_buff
*skb
, int sasize
, int type
,
3265 struct xfrm_selector
*sel
)
3267 struct sadb_address
*addr
;
3268 addr
= (struct sadb_address
*)skb_put(skb
, sizeof(struct sadb_address
) + sasize
);
3269 addr
->sadb_address_len
= (sizeof(struct sadb_address
) + sasize
)/8;
3270 addr
->sadb_address_exttype
= type
;
3271 addr
->sadb_address_proto
= sel
->proto
;
3272 addr
->sadb_address_reserved
= 0;
3275 case SADB_EXT_ADDRESS_SRC
:
3276 addr
->sadb_address_prefixlen
= sel
->prefixlen_s
;
3277 pfkey_sockaddr_fill(&sel
->saddr
, 0,
3278 (struct sockaddr
*)(addr
+ 1),
3281 case SADB_EXT_ADDRESS_DST
:
3282 addr
->sadb_address_prefixlen
= sel
->prefixlen_d
;
3283 pfkey_sockaddr_fill(&sel
->daddr
, 0,
3284 (struct sockaddr
*)(addr
+ 1),
3294 static int set_ipsecrequest(struct sk_buff
*skb
,
3295 uint8_t proto
, uint8_t mode
, int level
,
3296 uint32_t reqid
, uint8_t family
,
3297 xfrm_address_t
*src
, xfrm_address_t
*dst
)
3299 struct sadb_x_ipsecrequest
*rq
;
3301 int socklen
= pfkey_sockaddr_len(family
);
3304 size_req
= sizeof(struct sadb_x_ipsecrequest
) +
3305 pfkey_sockaddr_pair_size(family
);
3307 rq
= (struct sadb_x_ipsecrequest
*)skb_put(skb
, size_req
);
3308 memset(rq
, 0, size_req
);
3309 rq
->sadb_x_ipsecrequest_len
= size_req
;
3310 rq
->sadb_x_ipsecrequest_proto
= proto
;
3311 rq
->sadb_x_ipsecrequest_mode
= mode
;
3312 rq
->sadb_x_ipsecrequest_level
= level
;
3313 rq
->sadb_x_ipsecrequest_reqid
= reqid
;
3315 sa
= (u8
*) (rq
+ 1);
3316 if (!pfkey_sockaddr_fill(src
, 0, (struct sockaddr
*)sa
, family
) ||
3317 !pfkey_sockaddr_fill(dst
, 0, (struct sockaddr
*)(sa
+ socklen
), family
))
3324 #ifdef CONFIG_NET_KEY_MIGRATE
3325 static int pfkey_send_migrate(struct xfrm_selector
*sel
, u8 dir
, u8 type
,
3326 struct xfrm_migrate
*m
, int num_bundles
)
3332 struct sk_buff
*skb
;
3333 struct sadb_msg
*hdr
;
3334 struct sadb_x_policy
*pol
;
3335 struct xfrm_migrate
*mp
;
3337 if (type
!= XFRM_POLICY_TYPE_MAIN
)
3340 if (num_bundles
<= 0 || num_bundles
> XFRM_MAX_DEPTH
)
3344 sasize_sel
= pfkey_sockaddr_size(sel
->family
);
3347 size
+= (sizeof(struct sadb_address
) + sasize_sel
) * 2;
3350 size_pol
+= sizeof(struct sadb_x_policy
);
3353 for (i
= 0, mp
= m
; i
< num_bundles
; i
++, mp
++) {
3354 /* old locator pair */
3355 size_pol
+= sizeof(struct sadb_x_ipsecrequest
) +
3356 pfkey_sockaddr_pair_size(mp
->old_family
);
3357 /* new locator pair */
3358 size_pol
+= sizeof(struct sadb_x_ipsecrequest
) +
3359 pfkey_sockaddr_pair_size(mp
->new_family
);
3362 size
+= sizeof(struct sadb_msg
) + size_pol
;
3365 skb
= alloc_skb(size
, GFP_ATOMIC
);
3369 hdr
= (struct sadb_msg
*)skb_put(skb
, sizeof(struct sadb_msg
));
3370 hdr
->sadb_msg_version
= PF_KEY_V2
;
3371 hdr
->sadb_msg_type
= SADB_X_MIGRATE
;
3372 hdr
->sadb_msg_satype
= pfkey_proto2satype(m
->proto
);
3373 hdr
->sadb_msg_len
= size
/ 8;
3374 hdr
->sadb_msg_errno
= 0;
3375 hdr
->sadb_msg_reserved
= 0;
3376 hdr
->sadb_msg_seq
= 0;
3377 hdr
->sadb_msg_pid
= 0;
3380 set_sadb_address(skb
, sasize_sel
, SADB_EXT_ADDRESS_SRC
, sel
);
3383 set_sadb_address(skb
, sasize_sel
, SADB_EXT_ADDRESS_DST
, sel
);
3385 /* policy information */
3386 pol
= (struct sadb_x_policy
*)skb_put(skb
, sizeof(struct sadb_x_policy
));
3387 pol
->sadb_x_policy_len
= size_pol
/ 8;
3388 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
3389 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
3390 pol
->sadb_x_policy_dir
= dir
+ 1;
3391 pol
->sadb_x_policy_id
= 0;
3392 pol
->sadb_x_policy_priority
= 0;
3394 for (i
= 0, mp
= m
; i
< num_bundles
; i
++, mp
++) {
3395 /* old ipsecrequest */
3396 int mode
= pfkey_mode_from_xfrm(mp
->mode
);
3399 if (set_ipsecrequest(skb
, mp
->proto
, mode
,
3400 (mp
->reqid
? IPSEC_LEVEL_UNIQUE
: IPSEC_LEVEL_REQUIRE
),
3401 mp
->reqid
, mp
->old_family
,
3402 &mp
->old_saddr
, &mp
->old_daddr
) < 0)
3405 /* new ipsecrequest */
3406 if (set_ipsecrequest(skb
, mp
->proto
, mode
,
3407 (mp
->reqid
? IPSEC_LEVEL_UNIQUE
: IPSEC_LEVEL_REQUIRE
),
3408 mp
->reqid
, mp
->new_family
,
3409 &mp
->new_saddr
, &mp
->new_daddr
) < 0)
3413 /* broadcast migrate message to sockets */
3414 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
);
3423 static int pfkey_send_migrate(struct xfrm_selector
*sel
, u8 dir
, u8 type
,
3424 struct xfrm_migrate
*m
, int num_bundles
)
3426 return -ENOPROTOOPT
;
3430 static int pfkey_sendmsg(struct kiocb
*kiocb
,
3431 struct socket
*sock
, struct msghdr
*msg
, size_t len
)
3433 struct sock
*sk
= sock
->sk
;
3434 struct sk_buff
*skb
= NULL
;
3435 struct sadb_msg
*hdr
= NULL
;
3439 if (msg
->msg_flags
& MSG_OOB
)
3443 if ((unsigned)len
> sk
->sk_sndbuf
- 32)
3447 skb
= alloc_skb(len
, GFP_KERNEL
);
3452 if (memcpy_fromiovec(skb_put(skb
,len
), msg
->msg_iov
, len
))
3455 hdr
= pfkey_get_base_msg(skb
, &err
);
3459 mutex_lock(&xfrm_cfg_mutex
);
3460 err
= pfkey_process(sk
, skb
, hdr
);
3461 mutex_unlock(&xfrm_cfg_mutex
);
3464 if (err
&& hdr
&& pfkey_error(hdr
, err
, sk
) == 0)
3472 static int pfkey_recvmsg(struct kiocb
*kiocb
,
3473 struct socket
*sock
, struct msghdr
*msg
, size_t len
,
3476 struct sock
*sk
= sock
->sk
;
3477 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
3478 struct sk_buff
*skb
;
3482 if (flags
& ~(MSG_PEEK
|MSG_DONTWAIT
|MSG_TRUNC
|MSG_CMSG_COMPAT
))
3485 msg
->msg_namelen
= 0;
3486 skb
= skb_recv_datagram(sk
, flags
, flags
& MSG_DONTWAIT
, &err
);
3492 msg
->msg_flags
|= MSG_TRUNC
;
3496 skb_reset_transport_header(skb
);
3497 err
= skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
3501 sock_recv_timestamp(msg
, sk
, skb
);
3503 err
= (flags
& MSG_TRUNC
) ? skb
->len
: copied
;
3505 if (pfk
->dump
.dump
!= NULL
&&
3506 3 * atomic_read(&sk
->sk_rmem_alloc
) <= sk
->sk_rcvbuf
)
3510 skb_free_datagram(sk
, skb
);
3515 static const struct proto_ops pfkey_ops
= {
3517 .owner
= THIS_MODULE
,
3518 /* Operations that make no sense on pfkey sockets. */
3519 .bind
= sock_no_bind
,
3520 .connect
= sock_no_connect
,
3521 .socketpair
= sock_no_socketpair
,
3522 .accept
= sock_no_accept
,
3523 .getname
= sock_no_getname
,
3524 .ioctl
= sock_no_ioctl
,
3525 .listen
= sock_no_listen
,
3526 .shutdown
= sock_no_shutdown
,
3527 .setsockopt
= sock_no_setsockopt
,
3528 .getsockopt
= sock_no_getsockopt
,
3529 .mmap
= sock_no_mmap
,
3530 .sendpage
= sock_no_sendpage
,
3532 /* Now the operations that really occur. */
3533 .release
= pfkey_release
,
3534 .poll
= datagram_poll
,
3535 .sendmsg
= pfkey_sendmsg
,
3536 .recvmsg
= pfkey_recvmsg
,
3539 static struct net_proto_family pfkey_family_ops
= {
3541 .create
= pfkey_create
,
3542 .owner
= THIS_MODULE
,
3545 #ifdef CONFIG_PROC_FS
3546 static int pfkey_seq_show(struct seq_file
*f
, void *v
)
3550 s
= (struct sock
*)v
;
3551 if (v
== SEQ_START_TOKEN
)
3552 seq_printf(f
,"sk RefCnt Rmem Wmem User Inode\n");
3554 seq_printf(f
,"%p %-6d %-6u %-6u %-6u %-6lu\n",
3556 atomic_read(&s
->sk_refcnt
),
3557 atomic_read(&s
->sk_rmem_alloc
),
3558 atomic_read(&s
->sk_wmem_alloc
),
3565 static void *pfkey_seq_start(struct seq_file
*f
, loff_t
*ppos
)
3568 struct hlist_node
*node
;
3571 read_lock(&pfkey_table_lock
);
3573 return SEQ_START_TOKEN
;
3575 sk_for_each(s
, node
, &pfkey_table
)
3582 static void *pfkey_seq_next(struct seq_file
*f
, void *v
, loff_t
*ppos
)
3585 return (v
== SEQ_START_TOKEN
) ?
3586 sk_head(&pfkey_table
) :
3587 sk_next((struct sock
*)v
);
3590 static void pfkey_seq_stop(struct seq_file
*f
, void *v
)
3592 read_unlock(&pfkey_table_lock
);
3595 static struct seq_operations pfkey_seq_ops
= {
3596 .start
= pfkey_seq_start
,
3597 .next
= pfkey_seq_next
,
3598 .stop
= pfkey_seq_stop
,
3599 .show
= pfkey_seq_show
,
3602 static int pfkey_seq_open(struct inode
*inode
, struct file
*file
)
3604 return seq_open(file
, &pfkey_seq_ops
);
3607 static struct file_operations pfkey_proc_ops
= {
3608 .open
= pfkey_seq_open
,
3610 .llseek
= seq_lseek
,
3611 .release
= seq_release
,
3614 static int pfkey_init_proc(void)
3616 struct proc_dir_entry
*e
;
3618 e
= proc_net_fops_create(&init_net
, "pfkey", 0, &pfkey_proc_ops
);
3625 static void pfkey_exit_proc(void)
3627 proc_net_remove(&init_net
, "pfkey");
3630 static inline int pfkey_init_proc(void)
3635 static inline void pfkey_exit_proc(void)
3640 static struct xfrm_mgr pfkeyv2_mgr
=
3643 .notify
= pfkey_send_notify
,
3644 .acquire
= pfkey_send_acquire
,
3645 .compile_policy
= pfkey_compile_policy
,
3646 .new_mapping
= pfkey_send_new_mapping
,
3647 .notify_policy
= pfkey_send_policy_notify
,
3648 .migrate
= pfkey_send_migrate
,
3651 static void __exit
ipsec_pfkey_exit(void)
3653 xfrm_unregister_km(&pfkeyv2_mgr
);
3655 sock_unregister(PF_KEY
);
3656 proto_unregister(&key_proto
);
3659 static int __init
ipsec_pfkey_init(void)
3661 int err
= proto_register(&key_proto
, 0);
3666 err
= sock_register(&pfkey_family_ops
);
3668 goto out_unregister_key_proto
;
3669 err
= pfkey_init_proc();
3671 goto out_sock_unregister
;
3672 err
= xfrm_register_km(&pfkeyv2_mgr
);
3674 goto out_remove_proc_entry
;
3677 out_remove_proc_entry
:
3679 out_sock_unregister
:
3680 sock_unregister(PF_KEY
);
3681 out_unregister_key_proto
:
3682 proto_unregister(&key_proto
);
3686 module_init(ipsec_pfkey_init
);
3687 module_exit(ipsec_pfkey_exit
);
3688 MODULE_LICENSE("GPL");
3689 MODULE_ALIAS_NETPROTO(PF_KEY
);