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 <linux/slab.h>
30 #include <net/net_namespace.h>
31 #include <net/netns/generic.h>
36 #define _X2KEY(x) ((x) == XFRM_INF ? 0 : (x))
37 #define _KEY2X(x) ((x) == 0 ? XFRM_INF : (x))
39 static int pfkey_net_id __read_mostly
;
41 /* List of all pfkey sockets. */
42 struct hlist_head table
;
45 static DEFINE_MUTEX(pfkey_mutex
);
48 static const struct xfrm_mark dummy_mark
= {0, 0};
50 /* struct sock must be the first member of struct pfkey_sock */
58 int (*dump
)(struct pfkey_sock
*sk
);
59 void (*done
)(struct pfkey_sock
*sk
);
61 struct xfrm_policy_walk policy
;
62 struct xfrm_state_walk state
;
68 static inline struct pfkey_sock
*pfkey_sk(struct sock
*sk
)
70 return (struct pfkey_sock
*)sk
;
73 static int pfkey_can_dump(const struct sock
*sk
)
75 if (3 * atomic_read(&sk
->sk_rmem_alloc
) <= 2 * sk
->sk_rcvbuf
)
80 static void pfkey_terminate_dump(struct pfkey_sock
*pfk
)
84 kfree_skb(pfk
->dump
.skb
);
88 pfk
->dump
.dump
= NULL
;
89 pfk
->dump
.done
= NULL
;
93 static void pfkey_sock_destruct(struct sock
*sk
)
95 struct net
*net
= sock_net(sk
);
96 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
98 pfkey_terminate_dump(pfkey_sk(sk
));
99 skb_queue_purge(&sk
->sk_receive_queue
);
101 if (!sock_flag(sk
, SOCK_DEAD
)) {
102 pr_err("Attempt to release alive pfkey socket: %p\n", sk
);
106 WARN_ON(atomic_read(&sk
->sk_rmem_alloc
));
107 WARN_ON(atomic_read(&sk
->sk_wmem_alloc
));
109 atomic_dec(&net_pfkey
->socks_nr
);
112 static const struct proto_ops pfkey_ops
;
114 static void pfkey_insert(struct sock
*sk
)
116 struct net
*net
= sock_net(sk
);
117 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
119 mutex_lock(&pfkey_mutex
);
120 sk_add_node_rcu(sk
, &net_pfkey
->table
);
121 mutex_unlock(&pfkey_mutex
);
124 static void pfkey_remove(struct sock
*sk
)
126 mutex_lock(&pfkey_mutex
);
127 sk_del_node_init_rcu(sk
);
128 mutex_unlock(&pfkey_mutex
);
131 static struct proto key_proto
= {
133 .owner
= THIS_MODULE
,
134 .obj_size
= sizeof(struct pfkey_sock
),
137 static int pfkey_create(struct net
*net
, struct socket
*sock
, int protocol
,
140 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
144 if (!ns_capable(net
->user_ns
, CAP_NET_ADMIN
))
146 if (sock
->type
!= SOCK_RAW
)
147 return -ESOCKTNOSUPPORT
;
148 if (protocol
!= PF_KEY_V2
)
149 return -EPROTONOSUPPORT
;
152 sk
= sk_alloc(net
, PF_KEY
, GFP_KERNEL
, &key_proto
);
156 sock
->ops
= &pfkey_ops
;
157 sock_init_data(sock
, sk
);
159 sk
->sk_family
= PF_KEY
;
160 sk
->sk_destruct
= pfkey_sock_destruct
;
162 atomic_inc(&net_pfkey
->socks_nr
);
171 static int pfkey_release(struct socket
*sock
)
173 struct sock
*sk
= sock
->sk
;
182 skb_queue_purge(&sk
->sk_write_queue
);
190 static int pfkey_broadcast_one(struct sk_buff
*skb
, struct sk_buff
**skb2
,
191 gfp_t allocation
, struct sock
*sk
)
197 if (atomic_read(&skb
->users
) != 1) {
198 *skb2
= skb_clone(skb
, allocation
);
201 atomic_inc(&skb
->users
);
205 if (atomic_read(&sk
->sk_rmem_alloc
) <= sk
->sk_rcvbuf
) {
206 skb_set_owner_r(*skb2
, sk
);
207 skb_queue_tail(&sk
->sk_receive_queue
, *skb2
);
208 sk
->sk_data_ready(sk
, (*skb2
)->len
);
217 /* Send SKB to all pfkey sockets matching selected criteria. */
218 #define BROADCAST_ALL 0
219 #define BROADCAST_ONE 1
220 #define BROADCAST_REGISTERED 2
221 #define BROADCAST_PROMISC_ONLY 4
222 static int pfkey_broadcast(struct sk_buff
*skb
, gfp_t allocation
,
223 int broadcast_flags
, struct sock
*one_sk
,
226 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
228 struct sk_buff
*skb2
= NULL
;
231 /* XXX Do we need something like netlink_overrun? I think
232 * XXX PF_KEY socket apps will not mind current behavior.
238 sk_for_each_rcu(sk
, &net_pfkey
->table
) {
239 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
242 /* Yes, it means that if you are meant to receive this
243 * pfkey message you receive it twice as promiscuous
247 pfkey_broadcast_one(skb
, &skb2
, allocation
, sk
);
249 /* the exact target will be processed later */
252 if (broadcast_flags
!= BROADCAST_ALL
) {
253 if (broadcast_flags
& BROADCAST_PROMISC_ONLY
)
255 if ((broadcast_flags
& BROADCAST_REGISTERED
) &&
258 if (broadcast_flags
& BROADCAST_ONE
)
262 err2
= pfkey_broadcast_one(skb
, &skb2
, allocation
, sk
);
264 /* Error is cleare after succecful sending to at least one
266 if ((broadcast_flags
& BROADCAST_REGISTERED
) && err
)
272 err
= pfkey_broadcast_one(skb
, &skb2
, allocation
, one_sk
);
279 static int pfkey_do_dump(struct pfkey_sock
*pfk
)
281 struct sadb_msg
*hdr
;
284 rc
= pfk
->dump
.dump(pfk
);
289 if (!pfkey_can_dump(&pfk
->sk
))
292 hdr
= (struct sadb_msg
*) pfk
->dump
.skb
->data
;
293 hdr
->sadb_msg_seq
= 0;
294 hdr
->sadb_msg_errno
= rc
;
295 pfkey_broadcast(pfk
->dump
.skb
, GFP_ATOMIC
, BROADCAST_ONE
,
296 &pfk
->sk
, sock_net(&pfk
->sk
));
297 pfk
->dump
.skb
= NULL
;
300 pfkey_terminate_dump(pfk
);
304 static inline void pfkey_hdr_dup(struct sadb_msg
*new,
305 const struct sadb_msg
*orig
)
310 static int pfkey_error(const struct sadb_msg
*orig
, int err
, struct sock
*sk
)
312 struct sk_buff
*skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_KERNEL
);
313 struct sadb_msg
*hdr
;
318 /* Woe be to the platform trying to support PFKEY yet
319 * having normal errnos outside the 1-255 range, inclusive.
322 if (err
== ERESTARTSYS
||
323 err
== ERESTARTNOHAND
||
324 err
== ERESTARTNOINTR
)
328 BUG_ON(err
<= 0 || err
>= 256);
330 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
331 pfkey_hdr_dup(hdr
, orig
);
332 hdr
->sadb_msg_errno
= (uint8_t) err
;
333 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) /
336 pfkey_broadcast(skb
, GFP_KERNEL
, BROADCAST_ONE
, sk
, sock_net(sk
));
341 static const u8 sadb_ext_min_len
[] = {
342 [SADB_EXT_RESERVED
] = (u8
) 0,
343 [SADB_EXT_SA
] = (u8
) sizeof(struct sadb_sa
),
344 [SADB_EXT_LIFETIME_CURRENT
] = (u8
) sizeof(struct sadb_lifetime
),
345 [SADB_EXT_LIFETIME_HARD
] = (u8
) sizeof(struct sadb_lifetime
),
346 [SADB_EXT_LIFETIME_SOFT
] = (u8
) sizeof(struct sadb_lifetime
),
347 [SADB_EXT_ADDRESS_SRC
] = (u8
) sizeof(struct sadb_address
),
348 [SADB_EXT_ADDRESS_DST
] = (u8
) sizeof(struct sadb_address
),
349 [SADB_EXT_ADDRESS_PROXY
] = (u8
) sizeof(struct sadb_address
),
350 [SADB_EXT_KEY_AUTH
] = (u8
) sizeof(struct sadb_key
),
351 [SADB_EXT_KEY_ENCRYPT
] = (u8
) sizeof(struct sadb_key
),
352 [SADB_EXT_IDENTITY_SRC
] = (u8
) sizeof(struct sadb_ident
),
353 [SADB_EXT_IDENTITY_DST
] = (u8
) sizeof(struct sadb_ident
),
354 [SADB_EXT_SENSITIVITY
] = (u8
) sizeof(struct sadb_sens
),
355 [SADB_EXT_PROPOSAL
] = (u8
) sizeof(struct sadb_prop
),
356 [SADB_EXT_SUPPORTED_AUTH
] = (u8
) sizeof(struct sadb_supported
),
357 [SADB_EXT_SUPPORTED_ENCRYPT
] = (u8
) sizeof(struct sadb_supported
),
358 [SADB_EXT_SPIRANGE
] = (u8
) sizeof(struct sadb_spirange
),
359 [SADB_X_EXT_KMPRIVATE
] = (u8
) sizeof(struct sadb_x_kmprivate
),
360 [SADB_X_EXT_POLICY
] = (u8
) sizeof(struct sadb_x_policy
),
361 [SADB_X_EXT_SA2
] = (u8
) sizeof(struct sadb_x_sa2
),
362 [SADB_X_EXT_NAT_T_TYPE
] = (u8
) sizeof(struct sadb_x_nat_t_type
),
363 [SADB_X_EXT_NAT_T_SPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
364 [SADB_X_EXT_NAT_T_DPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
365 [SADB_X_EXT_NAT_T_OA
] = (u8
) sizeof(struct sadb_address
),
366 [SADB_X_EXT_SEC_CTX
] = (u8
) sizeof(struct sadb_x_sec_ctx
),
367 [SADB_X_EXT_KMADDRESS
] = (u8
) sizeof(struct sadb_x_kmaddress
),
368 [SADB_X_EXT_FILTER
] = (u8
) sizeof(struct sadb_x_filter
),
371 /* Verify sadb_address_{len,prefixlen} against sa_family. */
372 static int verify_address_len(const void *p
)
374 const struct sadb_address
*sp
= p
;
375 const struct sockaddr
*addr
= (const struct sockaddr
*)(sp
+ 1);
376 const struct sockaddr_in
*sin
;
377 #if IS_ENABLED(CONFIG_IPV6)
378 const struct sockaddr_in6
*sin6
;
382 switch (addr
->sa_family
) {
384 len
= DIV_ROUND_UP(sizeof(*sp
) + sizeof(*sin
), sizeof(uint64_t));
385 if (sp
->sadb_address_len
!= len
||
386 sp
->sadb_address_prefixlen
> 32)
389 #if IS_ENABLED(CONFIG_IPV6)
391 len
= DIV_ROUND_UP(sizeof(*sp
) + sizeof(*sin6
), sizeof(uint64_t));
392 if (sp
->sadb_address_len
!= len
||
393 sp
->sadb_address_prefixlen
> 128)
398 /* It is user using kernel to keep track of security
399 * associations for another protocol, such as
400 * OSPF/RSVP/RIPV2/MIP. It is user's job to verify
403 * XXX Actually, association/policy database is not yet
404 * XXX able to cope with arbitrary sockaddr families.
405 * XXX When it can, remove this -EINVAL. -DaveM
414 static inline int pfkey_sec_ctx_len(const struct sadb_x_sec_ctx
*sec_ctx
)
416 return DIV_ROUND_UP(sizeof(struct sadb_x_sec_ctx
) +
417 sec_ctx
->sadb_x_ctx_len
,
421 static inline int verify_sec_ctx_len(const void *p
)
423 const struct sadb_x_sec_ctx
*sec_ctx
= p
;
424 int len
= sec_ctx
->sadb_x_ctx_len
;
429 len
= pfkey_sec_ctx_len(sec_ctx
);
431 if (sec_ctx
->sadb_x_sec_len
!= len
)
437 static inline struct xfrm_user_sec_ctx
*pfkey_sadb2xfrm_user_sec_ctx(const struct sadb_x_sec_ctx
*sec_ctx
)
439 struct xfrm_user_sec_ctx
*uctx
= NULL
;
440 int ctx_size
= sec_ctx
->sadb_x_ctx_len
;
442 uctx
= kmalloc((sizeof(*uctx
)+ctx_size
), GFP_KERNEL
);
447 uctx
->len
= pfkey_sec_ctx_len(sec_ctx
);
448 uctx
->exttype
= sec_ctx
->sadb_x_sec_exttype
;
449 uctx
->ctx_doi
= sec_ctx
->sadb_x_ctx_doi
;
450 uctx
->ctx_alg
= sec_ctx
->sadb_x_ctx_alg
;
451 uctx
->ctx_len
= sec_ctx
->sadb_x_ctx_len
;
452 memcpy(uctx
+ 1, sec_ctx
+ 1,
458 static int present_and_same_family(const struct sadb_address
*src
,
459 const struct sadb_address
*dst
)
461 const struct sockaddr
*s_addr
, *d_addr
;
466 s_addr
= (const struct sockaddr
*)(src
+ 1);
467 d_addr
= (const struct sockaddr
*)(dst
+ 1);
468 if (s_addr
->sa_family
!= d_addr
->sa_family
)
470 if (s_addr
->sa_family
!= AF_INET
471 #if IS_ENABLED(CONFIG_IPV6)
472 && s_addr
->sa_family
!= AF_INET6
480 static int parse_exthdrs(struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void **ext_hdrs
)
482 const char *p
= (char *) hdr
;
488 const struct sadb_ext
*ehdr
= (const struct sadb_ext
*) p
;
492 ext_len
= ehdr
->sadb_ext_len
;
493 ext_len
*= sizeof(uint64_t);
494 ext_type
= ehdr
->sadb_ext_type
;
495 if (ext_len
< sizeof(uint64_t) ||
497 ext_type
== SADB_EXT_RESERVED
)
500 if (ext_type
<= SADB_EXT_MAX
) {
501 int min
= (int) sadb_ext_min_len
[ext_type
];
504 if (ext_hdrs
[ext_type
-1] != NULL
)
506 if (ext_type
== SADB_EXT_ADDRESS_SRC
||
507 ext_type
== SADB_EXT_ADDRESS_DST
||
508 ext_type
== SADB_EXT_ADDRESS_PROXY
||
509 ext_type
== SADB_X_EXT_NAT_T_OA
) {
510 if (verify_address_len(p
))
513 if (ext_type
== SADB_X_EXT_SEC_CTX
) {
514 if (verify_sec_ctx_len(p
))
517 ext_hdrs
[ext_type
-1] = (void *) p
;
527 pfkey_satype2proto(uint8_t satype
)
530 case SADB_SATYPE_UNSPEC
:
531 return IPSEC_PROTO_ANY
;
534 case SADB_SATYPE_ESP
:
536 case SADB_X_SATYPE_IPCOMP
:
546 pfkey_proto2satype(uint16_t proto
)
550 return SADB_SATYPE_AH
;
552 return SADB_SATYPE_ESP
;
554 return SADB_X_SATYPE_IPCOMP
;
562 /* BTW, this scheme means that there is no way with PFKEY2 sockets to
563 * say specifically 'just raw sockets' as we encode them as 255.
566 static uint8_t pfkey_proto_to_xfrm(uint8_t proto
)
568 return proto
== IPSEC_PROTO_ANY
? 0 : proto
;
571 static uint8_t pfkey_proto_from_xfrm(uint8_t proto
)
573 return proto
? proto
: IPSEC_PROTO_ANY
;
576 static inline int pfkey_sockaddr_len(sa_family_t family
)
580 return sizeof(struct sockaddr_in
);
581 #if IS_ENABLED(CONFIG_IPV6)
583 return sizeof(struct sockaddr_in6
);
590 int pfkey_sockaddr_extract(const struct sockaddr
*sa
, xfrm_address_t
*xaddr
)
592 switch (sa
->sa_family
) {
595 ((struct sockaddr_in
*)sa
)->sin_addr
.s_addr
;
597 #if IS_ENABLED(CONFIG_IPV6)
600 &((struct sockaddr_in6
*)sa
)->sin6_addr
,
601 sizeof(struct in6_addr
));
609 int pfkey_sadb_addr2xfrm_addr(const struct sadb_address
*addr
, xfrm_address_t
*xaddr
)
611 return pfkey_sockaddr_extract((struct sockaddr
*)(addr
+ 1),
615 static struct xfrm_state
*pfkey_xfrm_state_lookup(struct net
*net
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
617 const struct sadb_sa
*sa
;
618 const struct sadb_address
*addr
;
620 unsigned short family
;
621 xfrm_address_t
*xaddr
;
623 sa
= ext_hdrs
[SADB_EXT_SA
- 1];
627 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
631 /* sadb_address_len should be checked by caller */
632 addr
= ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1];
636 family
= ((const struct sockaddr
*)(addr
+ 1))->sa_family
;
639 xaddr
= (xfrm_address_t
*)&((const struct sockaddr_in
*)(addr
+ 1))->sin_addr
;
641 #if IS_ENABLED(CONFIG_IPV6)
643 xaddr
= (xfrm_address_t
*)&((const struct sockaddr_in6
*)(addr
+ 1))->sin6_addr
;
653 return xfrm_state_lookup(net
, DUMMY_MARK
, xaddr
, sa
->sadb_sa_spi
, proto
, family
);
656 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
659 pfkey_sockaddr_size(sa_family_t family
)
661 return PFKEY_ALIGN8(pfkey_sockaddr_len(family
));
664 static inline int pfkey_mode_from_xfrm(int mode
)
667 case XFRM_MODE_TRANSPORT
:
668 return IPSEC_MODE_TRANSPORT
;
669 case XFRM_MODE_TUNNEL
:
670 return IPSEC_MODE_TUNNEL
;
672 return IPSEC_MODE_BEET
;
678 static inline int pfkey_mode_to_xfrm(int mode
)
681 case IPSEC_MODE_ANY
: /*XXX*/
682 case IPSEC_MODE_TRANSPORT
:
683 return XFRM_MODE_TRANSPORT
;
684 case IPSEC_MODE_TUNNEL
:
685 return XFRM_MODE_TUNNEL
;
686 case IPSEC_MODE_BEET
:
687 return XFRM_MODE_BEET
;
693 static unsigned int pfkey_sockaddr_fill(const xfrm_address_t
*xaddr
, __be16 port
,
695 unsigned short family
)
700 struct sockaddr_in
*sin
= (struct sockaddr_in
*)sa
;
701 sin
->sin_family
= AF_INET
;
702 sin
->sin_port
= port
;
703 sin
->sin_addr
.s_addr
= xaddr
->a4
;
704 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
707 #if IS_ENABLED(CONFIG_IPV6)
710 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*)sa
;
711 sin6
->sin6_family
= AF_INET6
;
712 sin6
->sin6_port
= port
;
713 sin6
->sin6_flowinfo
= 0;
714 sin6
->sin6_addr
= *(struct in6_addr
*)xaddr
->a6
;
715 sin6
->sin6_scope_id
= 0;
723 static struct sk_buff
*__pfkey_xfrm_state2msg(const struct xfrm_state
*x
,
724 int add_keys
, int hsc
)
727 struct sadb_msg
*hdr
;
729 struct sadb_lifetime
*lifetime
;
730 struct sadb_address
*addr
;
731 struct sadb_key
*key
;
732 struct sadb_x_sa2
*sa2
;
733 struct sadb_x_sec_ctx
*sec_ctx
;
734 struct xfrm_sec_ctx
*xfrm_ctx
;
737 int auth_key_size
= 0;
738 int encrypt_key_size
= 0;
740 struct xfrm_encap_tmpl
*natt
= NULL
;
743 /* address family check */
744 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
746 return ERR_PTR(-EINVAL
);
748 /* base, SA, (lifetime (HSC),) address(SD), (address(P),)
749 key(AE), (identity(SD),) (sensitivity)> */
750 size
= sizeof(struct sadb_msg
) +sizeof(struct sadb_sa
) +
751 sizeof(struct sadb_lifetime
) +
752 ((hsc
& 1) ? sizeof(struct sadb_lifetime
) : 0) +
753 ((hsc
& 2) ? sizeof(struct sadb_lifetime
) : 0) +
754 sizeof(struct sadb_address
)*2 +
756 sizeof(struct sadb_x_sa2
);
758 if ((xfrm_ctx
= x
->security
)) {
759 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
760 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
763 /* identity & sensitivity */
764 if (!xfrm_addr_equal(&x
->sel
.saddr
, &x
->props
.saddr
, x
->props
.family
))
765 size
+= sizeof(struct sadb_address
) + sockaddr_size
;
768 if (x
->aalg
&& x
->aalg
->alg_key_len
) {
770 PFKEY_ALIGN8((x
->aalg
->alg_key_len
+ 7) / 8);
771 size
+= sizeof(struct sadb_key
) + auth_key_size
;
773 if (x
->ealg
&& x
->ealg
->alg_key_len
) {
775 PFKEY_ALIGN8((x
->ealg
->alg_key_len
+7) / 8);
776 size
+= sizeof(struct sadb_key
) + encrypt_key_size
;
782 if (natt
&& natt
->encap_type
) {
783 size
+= sizeof(struct sadb_x_nat_t_type
);
784 size
+= sizeof(struct sadb_x_nat_t_port
);
785 size
+= sizeof(struct sadb_x_nat_t_port
);
788 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
790 return ERR_PTR(-ENOBUFS
);
792 /* call should fill header later */
793 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
794 memset(hdr
, 0, size
); /* XXX do we need this ? */
795 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
798 sa
= (struct sadb_sa
*) skb_put(skb
, sizeof(struct sadb_sa
));
799 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
800 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
801 sa
->sadb_sa_spi
= x
->id
.spi
;
802 sa
->sadb_sa_replay
= x
->props
.replay_window
;
803 switch (x
->km
.state
) {
804 case XFRM_STATE_VALID
:
805 sa
->sadb_sa_state
= x
->km
.dying
?
806 SADB_SASTATE_DYING
: SADB_SASTATE_MATURE
;
809 sa
->sadb_sa_state
= SADB_SASTATE_LARVAL
;
812 sa
->sadb_sa_state
= SADB_SASTATE_DEAD
;
815 sa
->sadb_sa_auth
= 0;
817 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byname(x
->aalg
->alg_name
, 0);
818 sa
->sadb_sa_auth
= (a
&& a
->pfkey_supported
) ?
819 a
->desc
.sadb_alg_id
: 0;
821 sa
->sadb_sa_encrypt
= 0;
822 BUG_ON(x
->ealg
&& x
->calg
);
824 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byname(x
->ealg
->alg_name
, 0);
825 sa
->sadb_sa_encrypt
= (a
&& a
->pfkey_supported
) ?
826 a
->desc
.sadb_alg_id
: 0;
828 /* KAME compatible: sadb_sa_encrypt is overloaded with calg id */
830 struct xfrm_algo_desc
*a
= xfrm_calg_get_byname(x
->calg
->alg_name
, 0);
831 sa
->sadb_sa_encrypt
= (a
&& a
->pfkey_supported
) ?
832 a
->desc
.sadb_alg_id
: 0;
835 sa
->sadb_sa_flags
= 0;
836 if (x
->props
.flags
& XFRM_STATE_NOECN
)
837 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOECN
;
838 if (x
->props
.flags
& XFRM_STATE_DECAP_DSCP
)
839 sa
->sadb_sa_flags
|= SADB_SAFLAGS_DECAP_DSCP
;
840 if (x
->props
.flags
& XFRM_STATE_NOPMTUDISC
)
841 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOPMTUDISC
;
845 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
846 sizeof(struct sadb_lifetime
));
847 lifetime
->sadb_lifetime_len
=
848 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
849 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
850 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.hard_packet_limit
);
851 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.hard_byte_limit
);
852 lifetime
->sadb_lifetime_addtime
= x
->lft
.hard_add_expires_seconds
;
853 lifetime
->sadb_lifetime_usetime
= x
->lft
.hard_use_expires_seconds
;
857 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
858 sizeof(struct sadb_lifetime
));
859 lifetime
->sadb_lifetime_len
=
860 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
861 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
862 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.soft_packet_limit
);
863 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.soft_byte_limit
);
864 lifetime
->sadb_lifetime_addtime
= x
->lft
.soft_add_expires_seconds
;
865 lifetime
->sadb_lifetime_usetime
= x
->lft
.soft_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_CURRENT
;
873 lifetime
->sadb_lifetime_allocations
= x
->curlft
.packets
;
874 lifetime
->sadb_lifetime_bytes
= x
->curlft
.bytes
;
875 lifetime
->sadb_lifetime_addtime
= x
->curlft
.add_time
;
876 lifetime
->sadb_lifetime_usetime
= x
->curlft
.use_time
;
878 addr
= (struct sadb_address
*) skb_put(skb
,
879 sizeof(struct sadb_address
)+sockaddr_size
);
880 addr
->sadb_address_len
=
881 (sizeof(struct sadb_address
)+sockaddr_size
)/
883 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
884 /* "if the ports are non-zero, then the sadb_address_proto field,
885 normally zero, MUST be filled in with the transport
886 protocol's number." - RFC2367 */
887 addr
->sadb_address_proto
= 0;
888 addr
->sadb_address_reserved
= 0;
890 addr
->sadb_address_prefixlen
=
891 pfkey_sockaddr_fill(&x
->props
.saddr
, 0,
892 (struct sockaddr
*) (addr
+ 1),
894 if (!addr
->sadb_address_prefixlen
)
898 addr
= (struct sadb_address
*) skb_put(skb
,
899 sizeof(struct sadb_address
)+sockaddr_size
);
900 addr
->sadb_address_len
=
901 (sizeof(struct sadb_address
)+sockaddr_size
)/
903 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
904 addr
->sadb_address_proto
= 0;
905 addr
->sadb_address_reserved
= 0;
907 addr
->sadb_address_prefixlen
=
908 pfkey_sockaddr_fill(&x
->id
.daddr
, 0,
909 (struct sockaddr
*) (addr
+ 1),
911 if (!addr
->sadb_address_prefixlen
)
914 if (!xfrm_addr_equal(&x
->sel
.saddr
, &x
->props
.saddr
,
916 addr
= (struct sadb_address
*) skb_put(skb
,
917 sizeof(struct sadb_address
)+sockaddr_size
);
918 addr
->sadb_address_len
=
919 (sizeof(struct sadb_address
)+sockaddr_size
)/
921 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_PROXY
;
922 addr
->sadb_address_proto
=
923 pfkey_proto_from_xfrm(x
->sel
.proto
);
924 addr
->sadb_address_prefixlen
= x
->sel
.prefixlen_s
;
925 addr
->sadb_address_reserved
= 0;
927 pfkey_sockaddr_fill(&x
->sel
.saddr
, x
->sel
.sport
,
928 (struct sockaddr
*) (addr
+ 1),
933 if (add_keys
&& auth_key_size
) {
934 key
= (struct sadb_key
*) skb_put(skb
,
935 sizeof(struct sadb_key
)+auth_key_size
);
936 key
->sadb_key_len
= (sizeof(struct sadb_key
) + auth_key_size
) /
938 key
->sadb_key_exttype
= SADB_EXT_KEY_AUTH
;
939 key
->sadb_key_bits
= x
->aalg
->alg_key_len
;
940 key
->sadb_key_reserved
= 0;
941 memcpy(key
+ 1, x
->aalg
->alg_key
, (x
->aalg
->alg_key_len
+7)/8);
944 if (add_keys
&& encrypt_key_size
) {
945 key
= (struct sadb_key
*) skb_put(skb
,
946 sizeof(struct sadb_key
)+encrypt_key_size
);
947 key
->sadb_key_len
= (sizeof(struct sadb_key
) +
948 encrypt_key_size
) / sizeof(uint64_t);
949 key
->sadb_key_exttype
= SADB_EXT_KEY_ENCRYPT
;
950 key
->sadb_key_bits
= x
->ealg
->alg_key_len
;
951 key
->sadb_key_reserved
= 0;
952 memcpy(key
+ 1, x
->ealg
->alg_key
,
953 (x
->ealg
->alg_key_len
+7)/8);
957 sa2
= (struct sadb_x_sa2
*) skb_put(skb
, sizeof(struct sadb_x_sa2
));
958 sa2
->sadb_x_sa2_len
= sizeof(struct sadb_x_sa2
)/sizeof(uint64_t);
959 sa2
->sadb_x_sa2_exttype
= SADB_X_EXT_SA2
;
960 if ((mode
= pfkey_mode_from_xfrm(x
->props
.mode
)) < 0) {
962 return ERR_PTR(-EINVAL
);
964 sa2
->sadb_x_sa2_mode
= mode
;
965 sa2
->sadb_x_sa2_reserved1
= 0;
966 sa2
->sadb_x_sa2_reserved2
= 0;
967 sa2
->sadb_x_sa2_sequence
= 0;
968 sa2
->sadb_x_sa2_reqid
= x
->props
.reqid
;
970 if (natt
&& natt
->encap_type
) {
971 struct sadb_x_nat_t_type
*n_type
;
972 struct sadb_x_nat_t_port
*n_port
;
975 n_type
= (struct sadb_x_nat_t_type
*) skb_put(skb
, sizeof(*n_type
));
976 n_type
->sadb_x_nat_t_type_len
= sizeof(*n_type
)/sizeof(uint64_t);
977 n_type
->sadb_x_nat_t_type_exttype
= SADB_X_EXT_NAT_T_TYPE
;
978 n_type
->sadb_x_nat_t_type_type
= natt
->encap_type
;
979 n_type
->sadb_x_nat_t_type_reserved
[0] = 0;
980 n_type
->sadb_x_nat_t_type_reserved
[1] = 0;
981 n_type
->sadb_x_nat_t_type_reserved
[2] = 0;
984 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
985 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
986 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
987 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
988 n_port
->sadb_x_nat_t_port_reserved
= 0;
991 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
992 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
993 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
994 n_port
->sadb_x_nat_t_port_port
= natt
->encap_dport
;
995 n_port
->sadb_x_nat_t_port_reserved
= 0;
998 /* security context */
1000 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
,
1001 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
1002 sec_ctx
->sadb_x_sec_len
=
1003 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
1004 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
1005 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
1006 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
1007 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
1008 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
1016 static inline struct sk_buff
*pfkey_xfrm_state2msg(const struct xfrm_state
*x
)
1018 struct sk_buff
*skb
;
1020 skb
= __pfkey_xfrm_state2msg(x
, 1, 3);
1025 static inline struct sk_buff
*pfkey_xfrm_state2msg_expire(const struct xfrm_state
*x
,
1028 return __pfkey_xfrm_state2msg(x
, 0, hsc
);
1031 static struct xfrm_state
* pfkey_msg2xfrm_state(struct net
*net
,
1032 const struct sadb_msg
*hdr
,
1033 void * const *ext_hdrs
)
1035 struct xfrm_state
*x
;
1036 const struct sadb_lifetime
*lifetime
;
1037 const struct sadb_sa
*sa
;
1038 const struct sadb_key
*key
;
1039 const struct sadb_x_sec_ctx
*sec_ctx
;
1044 sa
= ext_hdrs
[SADB_EXT_SA
- 1];
1046 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1047 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1048 return ERR_PTR(-EINVAL
);
1049 if (hdr
->sadb_msg_satype
== SADB_SATYPE_ESP
&&
1050 !ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1])
1051 return ERR_PTR(-EINVAL
);
1052 if (hdr
->sadb_msg_satype
== SADB_SATYPE_AH
&&
1053 !ext_hdrs
[SADB_EXT_KEY_AUTH
-1])
1054 return ERR_PTR(-EINVAL
);
1055 if (!!ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1] !=
1056 !!ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1])
1057 return ERR_PTR(-EINVAL
);
1059 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1061 return ERR_PTR(-EINVAL
);
1063 /* default error is no buffer space */
1068 Only SADB_SASTATE_MATURE SAs may be submitted in an SADB_ADD message.
1069 SADB_SASTATE_LARVAL SAs are created by SADB_GETSPI and it is not
1070 sensible to add a new SA in the DYING or SADB_SASTATE_DEAD state.
1071 Therefore, the sadb_sa_state field of all submitted SAs MUST be
1072 SADB_SASTATE_MATURE and the kernel MUST return an error if this is
1075 However, KAME setkey always uses SADB_SASTATE_LARVAL.
1076 Hence, we have to _ignore_ sadb_sa_state, which is also reasonable.
1078 if (sa
->sadb_sa_auth
> SADB_AALG_MAX
||
1079 (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
&&
1080 sa
->sadb_sa_encrypt
> SADB_X_CALG_MAX
) ||
1081 sa
->sadb_sa_encrypt
> SADB_EALG_MAX
)
1082 return ERR_PTR(-EINVAL
);
1083 key
= ext_hdrs
[SADB_EXT_KEY_AUTH
- 1];
1085 sa
->sadb_sa_auth
!= SADB_X_AALG_NULL
&&
1086 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1087 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1088 return ERR_PTR(-EINVAL
);
1089 key
= ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1091 sa
->sadb_sa_encrypt
!= SADB_EALG_NULL
&&
1092 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1093 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1094 return ERR_PTR(-EINVAL
);
1096 x
= xfrm_state_alloc(net
);
1098 return ERR_PTR(-ENOBUFS
);
1100 x
->id
.proto
= proto
;
1101 x
->id
.spi
= sa
->sadb_sa_spi
;
1102 x
->props
.replay_window
= min_t(unsigned int, sa
->sadb_sa_replay
,
1103 (sizeof(x
->replay
.bitmap
) * 8));
1104 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOECN
)
1105 x
->props
.flags
|= XFRM_STATE_NOECN
;
1106 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_DECAP_DSCP
)
1107 x
->props
.flags
|= XFRM_STATE_DECAP_DSCP
;
1108 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOPMTUDISC
)
1109 x
->props
.flags
|= XFRM_STATE_NOPMTUDISC
;
1111 lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_HARD
- 1];
1112 if (lifetime
!= NULL
) {
1113 x
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1114 x
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1115 x
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1116 x
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1118 lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_SOFT
- 1];
1119 if (lifetime
!= NULL
) {
1120 x
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1121 x
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1122 x
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1123 x
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1126 sec_ctx
= ext_hdrs
[SADB_X_EXT_SEC_CTX
- 1];
1127 if (sec_ctx
!= NULL
) {
1128 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
1133 err
= security_xfrm_state_alloc(x
, uctx
);
1140 key
= ext_hdrs
[SADB_EXT_KEY_AUTH
- 1];
1141 if (sa
->sadb_sa_auth
) {
1143 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byid(sa
->sadb_sa_auth
);
1144 if (!a
|| !a
->pfkey_supported
) {
1149 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1150 x
->aalg
= kmalloc(sizeof(*x
->aalg
) + keysize
, GFP_KERNEL
);
1153 strcpy(x
->aalg
->alg_name
, a
->name
);
1154 x
->aalg
->alg_key_len
= 0;
1156 x
->aalg
->alg_key_len
= key
->sadb_key_bits
;
1157 memcpy(x
->aalg
->alg_key
, key
+1, keysize
);
1159 x
->aalg
->alg_trunc_len
= a
->uinfo
.auth
.icv_truncbits
;
1160 x
->props
.aalgo
= sa
->sadb_sa_auth
;
1161 /* x->algo.flags = sa->sadb_sa_flags; */
1163 if (sa
->sadb_sa_encrypt
) {
1164 if (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
) {
1165 struct xfrm_algo_desc
*a
= xfrm_calg_get_byid(sa
->sadb_sa_encrypt
);
1166 if (!a
|| !a
->pfkey_supported
) {
1170 x
->calg
= kmalloc(sizeof(*x
->calg
), GFP_KERNEL
);
1173 strcpy(x
->calg
->alg_name
, a
->name
);
1174 x
->props
.calgo
= sa
->sadb_sa_encrypt
;
1177 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byid(sa
->sadb_sa_encrypt
);
1178 if (!a
|| !a
->pfkey_supported
) {
1182 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1184 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1185 x
->ealg
= kmalloc(sizeof(*x
->ealg
) + keysize
, GFP_KERNEL
);
1188 strcpy(x
->ealg
->alg_name
, a
->name
);
1189 x
->ealg
->alg_key_len
= 0;
1191 x
->ealg
->alg_key_len
= key
->sadb_key_bits
;
1192 memcpy(x
->ealg
->alg_key
, key
+1, keysize
);
1194 x
->props
.ealgo
= sa
->sadb_sa_encrypt
;
1197 /* x->algo.flags = sa->sadb_sa_flags; */
1199 x
->props
.family
= pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1201 pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
1204 if (ext_hdrs
[SADB_X_EXT_SA2
-1]) {
1205 const struct sadb_x_sa2
*sa2
= ext_hdrs
[SADB_X_EXT_SA2
-1];
1206 int mode
= pfkey_mode_to_xfrm(sa2
->sadb_x_sa2_mode
);
1211 x
->props
.mode
= mode
;
1212 x
->props
.reqid
= sa2
->sadb_x_sa2_reqid
;
1215 if (ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1]) {
1216 const struct sadb_address
*addr
= ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1];
1218 /* Nobody uses this, but we try. */
1219 x
->sel
.family
= pfkey_sadb_addr2xfrm_addr(addr
, &x
->sel
.saddr
);
1220 x
->sel
.prefixlen_s
= addr
->sadb_address_prefixlen
;
1224 x
->sel
.family
= x
->props
.family
;
1226 if (ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1]) {
1227 const struct sadb_x_nat_t_type
* n_type
;
1228 struct xfrm_encap_tmpl
*natt
;
1230 x
->encap
= kmalloc(sizeof(*x
->encap
), GFP_KERNEL
);
1235 n_type
= ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1];
1236 natt
->encap_type
= n_type
->sadb_x_nat_t_type_type
;
1238 if (ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1]) {
1239 const struct sadb_x_nat_t_port
*n_port
=
1240 ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1];
1241 natt
->encap_sport
= n_port
->sadb_x_nat_t_port_port
;
1243 if (ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1]) {
1244 const struct sadb_x_nat_t_port
*n_port
=
1245 ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1];
1246 natt
->encap_dport
= n_port
->sadb_x_nat_t_port_port
;
1248 memset(&natt
->encap_oa
, 0, sizeof(natt
->encap_oa
));
1251 err
= xfrm_init_state(x
);
1255 x
->km
.seq
= hdr
->sadb_msg_seq
;
1259 x
->km
.state
= XFRM_STATE_DEAD
;
1261 return ERR_PTR(err
);
1264 static int pfkey_reserved(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1269 static int pfkey_getspi(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1271 struct net
*net
= sock_net(sk
);
1272 struct sk_buff
*resp_skb
;
1273 struct sadb_x_sa2
*sa2
;
1274 struct sadb_address
*saddr
, *daddr
;
1275 struct sadb_msg
*out_hdr
;
1276 struct sadb_spirange
*range
;
1277 struct xfrm_state
*x
= NULL
;
1280 u32 min_spi
, max_spi
;
1283 unsigned short family
;
1284 xfrm_address_t
*xsaddr
= NULL
, *xdaddr
= NULL
;
1286 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1287 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1290 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1294 if ((sa2
= ext_hdrs
[SADB_X_EXT_SA2
-1]) != NULL
) {
1295 mode
= pfkey_mode_to_xfrm(sa2
->sadb_x_sa2_mode
);
1298 reqid
= sa2
->sadb_x_sa2_reqid
;
1304 saddr
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1];
1305 daddr
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
1307 family
= ((struct sockaddr
*)(saddr
+ 1))->sa_family
;
1310 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(daddr
+ 1))->sin_addr
.s_addr
;
1311 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(saddr
+ 1))->sin_addr
.s_addr
;
1313 #if IS_ENABLED(CONFIG_IPV6)
1315 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(daddr
+ 1))->sin6_addr
;
1316 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(saddr
+ 1))->sin6_addr
;
1321 if (hdr
->sadb_msg_seq
) {
1322 x
= xfrm_find_acq_byseq(net
, DUMMY_MARK
, hdr
->sadb_msg_seq
);
1323 if (x
&& !xfrm_addr_equal(&x
->id
.daddr
, xdaddr
, family
)) {
1330 x
= xfrm_find_acq(net
, &dummy_mark
, mode
, reqid
, proto
, xdaddr
, xsaddr
, 1, family
);
1336 max_spi
= 0x0fffffff;
1338 range
= ext_hdrs
[SADB_EXT_SPIRANGE
-1];
1340 min_spi
= range
->sadb_spirange_min
;
1341 max_spi
= range
->sadb_spirange_max
;
1344 err
= verify_spi_info(x
->id
.proto
, min_spi
, max_spi
);
1350 err
= xfrm_alloc_spi(x
, min_spi
, max_spi
);
1351 resp_skb
= err
? ERR_PTR(err
) : pfkey_xfrm_state2msg(x
);
1353 if (IS_ERR(resp_skb
)) {
1355 return PTR_ERR(resp_skb
);
1358 out_hdr
= (struct sadb_msg
*) resp_skb
->data
;
1359 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1360 out_hdr
->sadb_msg_type
= SADB_GETSPI
;
1361 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1362 out_hdr
->sadb_msg_errno
= 0;
1363 out_hdr
->sadb_msg_reserved
= 0;
1364 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1365 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1369 pfkey_broadcast(resp_skb
, GFP_KERNEL
, BROADCAST_ONE
, sk
, net
);
1374 static int pfkey_acquire(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1376 struct net
*net
= sock_net(sk
);
1377 struct xfrm_state
*x
;
1379 if (hdr
->sadb_msg_len
!= sizeof(struct sadb_msg
)/8)
1382 if (hdr
->sadb_msg_seq
== 0 || hdr
->sadb_msg_errno
== 0)
1385 x
= xfrm_find_acq_byseq(net
, DUMMY_MARK
, hdr
->sadb_msg_seq
);
1389 spin_lock_bh(&x
->lock
);
1390 if (x
->km
.state
== XFRM_STATE_ACQ
)
1391 x
->km
.state
= XFRM_STATE_ERROR
;
1393 spin_unlock_bh(&x
->lock
);
1398 static inline int event2poltype(int event
)
1401 case XFRM_MSG_DELPOLICY
:
1402 return SADB_X_SPDDELETE
;
1403 case XFRM_MSG_NEWPOLICY
:
1404 return SADB_X_SPDADD
;
1405 case XFRM_MSG_UPDPOLICY
:
1406 return SADB_X_SPDUPDATE
;
1407 case XFRM_MSG_POLEXPIRE
:
1408 // return SADB_X_SPDEXPIRE;
1410 pr_err("pfkey: Unknown policy event %d\n", event
);
1417 static inline int event2keytype(int event
)
1420 case XFRM_MSG_DELSA
:
1422 case XFRM_MSG_NEWSA
:
1424 case XFRM_MSG_UPDSA
:
1426 case XFRM_MSG_EXPIRE
:
1429 pr_err("pfkey: Unknown SA event %d\n", event
);
1437 static int key_notify_sa(struct xfrm_state
*x
, const struct km_event
*c
)
1439 struct sk_buff
*skb
;
1440 struct sadb_msg
*hdr
;
1442 skb
= pfkey_xfrm_state2msg(x
);
1445 return PTR_ERR(skb
);
1447 hdr
= (struct sadb_msg
*) skb
->data
;
1448 hdr
->sadb_msg_version
= PF_KEY_V2
;
1449 hdr
->sadb_msg_type
= event2keytype(c
->event
);
1450 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1451 hdr
->sadb_msg_errno
= 0;
1452 hdr
->sadb_msg_reserved
= 0;
1453 hdr
->sadb_msg_seq
= c
->seq
;
1454 hdr
->sadb_msg_pid
= c
->portid
;
1456 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
, xs_net(x
));
1461 static int pfkey_add(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1463 struct net
*net
= sock_net(sk
);
1464 struct xfrm_state
*x
;
1468 x
= pfkey_msg2xfrm_state(net
, hdr
, ext_hdrs
);
1473 if (hdr
->sadb_msg_type
== SADB_ADD
)
1474 err
= xfrm_state_add(x
);
1476 err
= xfrm_state_update(x
);
1478 xfrm_audit_state_add(x
, err
? 0 : 1,
1479 audit_get_loginuid(current
),
1480 audit_get_sessionid(current
), 0);
1483 x
->km
.state
= XFRM_STATE_DEAD
;
1484 __xfrm_state_put(x
);
1488 if (hdr
->sadb_msg_type
== SADB_ADD
)
1489 c
.event
= XFRM_MSG_NEWSA
;
1491 c
.event
= XFRM_MSG_UPDSA
;
1492 c
.seq
= hdr
->sadb_msg_seq
;
1493 c
.portid
= hdr
->sadb_msg_pid
;
1494 km_state_notify(x
, &c
);
1500 static int pfkey_delete(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1502 struct net
*net
= sock_net(sk
);
1503 struct xfrm_state
*x
;
1507 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1508 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1509 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1512 x
= pfkey_xfrm_state_lookup(net
, hdr
, ext_hdrs
);
1516 if ((err
= security_xfrm_state_delete(x
)))
1519 if (xfrm_state_kern(x
)) {
1524 err
= xfrm_state_delete(x
);
1529 c
.seq
= hdr
->sadb_msg_seq
;
1530 c
.portid
= hdr
->sadb_msg_pid
;
1531 c
.event
= XFRM_MSG_DELSA
;
1532 km_state_notify(x
, &c
);
1534 xfrm_audit_state_delete(x
, err
? 0 : 1,
1535 audit_get_loginuid(current
),
1536 audit_get_sessionid(current
), 0);
1542 static int pfkey_get(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1544 struct net
*net
= sock_net(sk
);
1546 struct sk_buff
*out_skb
;
1547 struct sadb_msg
*out_hdr
;
1548 struct xfrm_state
*x
;
1550 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1551 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1552 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1555 x
= pfkey_xfrm_state_lookup(net
, hdr
, ext_hdrs
);
1559 out_skb
= pfkey_xfrm_state2msg(x
);
1560 proto
= x
->id
.proto
;
1562 if (IS_ERR(out_skb
))
1563 return PTR_ERR(out_skb
);
1565 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1566 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1567 out_hdr
->sadb_msg_type
= SADB_GET
;
1568 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1569 out_hdr
->sadb_msg_errno
= 0;
1570 out_hdr
->sadb_msg_reserved
= 0;
1571 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1572 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1573 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
, sock_net(sk
));
1578 static struct sk_buff
*compose_sadb_supported(const struct sadb_msg
*orig
,
1581 struct sk_buff
*skb
;
1582 struct sadb_msg
*hdr
;
1583 int len
, auth_len
, enc_len
, i
;
1585 auth_len
= xfrm_count_pfkey_auth_supported();
1587 auth_len
*= sizeof(struct sadb_alg
);
1588 auth_len
+= sizeof(struct sadb_supported
);
1591 enc_len
= xfrm_count_pfkey_enc_supported();
1593 enc_len
*= sizeof(struct sadb_alg
);
1594 enc_len
+= sizeof(struct sadb_supported
);
1597 len
= enc_len
+ auth_len
+ sizeof(struct sadb_msg
);
1599 skb
= alloc_skb(len
+ 16, allocation
);
1603 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(*hdr
));
1604 pfkey_hdr_dup(hdr
, orig
);
1605 hdr
->sadb_msg_errno
= 0;
1606 hdr
->sadb_msg_len
= len
/ sizeof(uint64_t);
1609 struct sadb_supported
*sp
;
1610 struct sadb_alg
*ap
;
1612 sp
= (struct sadb_supported
*) skb_put(skb
, auth_len
);
1613 ap
= (struct sadb_alg
*) (sp
+ 1);
1615 sp
->sadb_supported_len
= auth_len
/ sizeof(uint64_t);
1616 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_AUTH
;
1618 for (i
= 0; ; i
++) {
1619 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
1622 if (!aalg
->pfkey_supported
)
1624 if (aalg
->available
)
1630 struct sadb_supported
*sp
;
1631 struct sadb_alg
*ap
;
1633 sp
= (struct sadb_supported
*) skb_put(skb
, enc_len
);
1634 ap
= (struct sadb_alg
*) (sp
+ 1);
1636 sp
->sadb_supported_len
= enc_len
/ sizeof(uint64_t);
1637 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_ENCRYPT
;
1639 for (i
= 0; ; i
++) {
1640 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
1643 if (!ealg
->pfkey_supported
)
1645 if (ealg
->available
)
1654 static int pfkey_register(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1656 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1657 struct sk_buff
*supp_skb
;
1659 if (hdr
->sadb_msg_satype
> SADB_SATYPE_MAX
)
1662 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
) {
1663 if (pfk
->registered
&(1<<hdr
->sadb_msg_satype
))
1665 pfk
->registered
|= (1<<hdr
->sadb_msg_satype
);
1670 supp_skb
= compose_sadb_supported(hdr
, GFP_KERNEL
);
1672 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
)
1673 pfk
->registered
&= ~(1<<hdr
->sadb_msg_satype
);
1678 pfkey_broadcast(supp_skb
, GFP_KERNEL
, BROADCAST_REGISTERED
, sk
, sock_net(sk
));
1683 static int unicast_flush_resp(struct sock
*sk
, const struct sadb_msg
*ihdr
)
1685 struct sk_buff
*skb
;
1686 struct sadb_msg
*hdr
;
1688 skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
1692 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
1693 memcpy(hdr
, ihdr
, sizeof(struct sadb_msg
));
1694 hdr
->sadb_msg_errno
= (uint8_t) 0;
1695 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
1697 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
, sock_net(sk
));
1700 static int key_notify_sa_flush(const struct km_event
*c
)
1702 struct sk_buff
*skb
;
1703 struct sadb_msg
*hdr
;
1705 skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
1708 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
1709 hdr
->sadb_msg_satype
= pfkey_proto2satype(c
->data
.proto
);
1710 hdr
->sadb_msg_type
= SADB_FLUSH
;
1711 hdr
->sadb_msg_seq
= c
->seq
;
1712 hdr
->sadb_msg_pid
= c
->portid
;
1713 hdr
->sadb_msg_version
= PF_KEY_V2
;
1714 hdr
->sadb_msg_errno
= (uint8_t) 0;
1715 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
1716 hdr
->sadb_msg_reserved
= 0;
1718 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
, c
->net
);
1723 static int pfkey_flush(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1725 struct net
*net
= sock_net(sk
);
1728 struct xfrm_audit audit_info
;
1731 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1735 audit_info
.loginuid
= audit_get_loginuid(current
);
1736 audit_info
.sessionid
= audit_get_sessionid(current
);
1737 audit_info
.secid
= 0;
1738 err
= xfrm_state_flush(net
, proto
, &audit_info
);
1739 err2
= unicast_flush_resp(sk
, hdr
);
1741 if (err
== -ESRCH
) /* empty table - go quietly */
1743 return err
? err
: err2
;
1746 c
.data
.proto
= proto
;
1747 c
.seq
= hdr
->sadb_msg_seq
;
1748 c
.portid
= hdr
->sadb_msg_pid
;
1749 c
.event
= XFRM_MSG_FLUSHSA
;
1751 km_state_notify(NULL
, &c
);
1756 static int dump_sa(struct xfrm_state
*x
, int count
, void *ptr
)
1758 struct pfkey_sock
*pfk
= ptr
;
1759 struct sk_buff
*out_skb
;
1760 struct sadb_msg
*out_hdr
;
1762 if (!pfkey_can_dump(&pfk
->sk
))
1765 out_skb
= pfkey_xfrm_state2msg(x
);
1766 if (IS_ERR(out_skb
))
1767 return PTR_ERR(out_skb
);
1769 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1770 out_hdr
->sadb_msg_version
= pfk
->dump
.msg_version
;
1771 out_hdr
->sadb_msg_type
= SADB_DUMP
;
1772 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1773 out_hdr
->sadb_msg_errno
= 0;
1774 out_hdr
->sadb_msg_reserved
= 0;
1775 out_hdr
->sadb_msg_seq
= count
+ 1;
1776 out_hdr
->sadb_msg_pid
= pfk
->dump
.msg_portid
;
1779 pfkey_broadcast(pfk
->dump
.skb
, GFP_ATOMIC
, BROADCAST_ONE
,
1780 &pfk
->sk
, sock_net(&pfk
->sk
));
1781 pfk
->dump
.skb
= out_skb
;
1786 static int pfkey_dump_sa(struct pfkey_sock
*pfk
)
1788 struct net
*net
= sock_net(&pfk
->sk
);
1789 return xfrm_state_walk(net
, &pfk
->dump
.u
.state
, dump_sa
, (void *) pfk
);
1792 static void pfkey_dump_sa_done(struct pfkey_sock
*pfk
)
1794 struct net
*net
= sock_net(&pfk
->sk
);
1796 xfrm_state_walk_done(&pfk
->dump
.u
.state
, net
);
1799 static int pfkey_dump(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1802 struct xfrm_filter
*filter
= NULL
;
1803 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1805 if (pfk
->dump
.dump
!= NULL
)
1808 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1812 if (ext_hdrs
[SADB_X_EXT_FILTER
- 1]) {
1813 struct sadb_x_filter
*xfilter
= ext_hdrs
[SADB_X_EXT_FILTER
- 1];
1815 filter
= kmalloc(sizeof(*filter
), GFP_KERNEL
);
1819 memcpy(&filter
->saddr
, &xfilter
->sadb_x_filter_saddr
,
1820 sizeof(xfrm_address_t
));
1821 memcpy(&filter
->daddr
, &xfilter
->sadb_x_filter_daddr
,
1822 sizeof(xfrm_address_t
));
1823 filter
->family
= xfilter
->sadb_x_filter_family
;
1824 filter
->splen
= xfilter
->sadb_x_filter_splen
;
1825 filter
->dplen
= xfilter
->sadb_x_filter_dplen
;
1828 pfk
->dump
.msg_version
= hdr
->sadb_msg_version
;
1829 pfk
->dump
.msg_portid
= hdr
->sadb_msg_pid
;
1830 pfk
->dump
.dump
= pfkey_dump_sa
;
1831 pfk
->dump
.done
= pfkey_dump_sa_done
;
1832 xfrm_state_walk_init(&pfk
->dump
.u
.state
, proto
, filter
);
1834 return pfkey_do_dump(pfk
);
1837 static int pfkey_promisc(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1839 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1840 int satype
= hdr
->sadb_msg_satype
;
1841 bool reset_errno
= false;
1843 if (hdr
->sadb_msg_len
== (sizeof(*hdr
) / sizeof(uint64_t))) {
1845 if (satype
!= 0 && satype
!= 1)
1847 pfk
->promisc
= satype
;
1849 if (reset_errno
&& skb_cloned(skb
))
1850 skb
= skb_copy(skb
, GFP_KERNEL
);
1852 skb
= skb_clone(skb
, GFP_KERNEL
);
1854 if (reset_errno
&& skb
) {
1855 struct sadb_msg
*new_hdr
= (struct sadb_msg
*) skb
->data
;
1856 new_hdr
->sadb_msg_errno
= 0;
1859 pfkey_broadcast(skb
, GFP_KERNEL
, BROADCAST_ALL
, NULL
, sock_net(sk
));
1863 static int check_reqid(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
1866 u32 reqid
= *(u32
*)ptr
;
1868 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1869 if (xp
->xfrm_vec
[i
].reqid
== reqid
)
1875 static u32
gen_reqid(struct net
*net
)
1877 struct xfrm_policy_walk walk
;
1880 static u32 reqid
= IPSEC_MANUAL_REQID_MAX
;
1886 reqid
= IPSEC_MANUAL_REQID_MAX
+1;
1887 xfrm_policy_walk_init(&walk
, XFRM_POLICY_TYPE_MAIN
);
1888 rc
= xfrm_policy_walk(net
, &walk
, check_reqid
, (void*)&reqid
);
1889 xfrm_policy_walk_done(&walk
, net
);
1892 } while (reqid
!= start
);
1897 parse_ipsecrequest(struct xfrm_policy
*xp
, struct sadb_x_ipsecrequest
*rq
)
1899 struct net
*net
= xp_net(xp
);
1900 struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ xp
->xfrm_nr
;
1903 if (xp
->xfrm_nr
>= XFRM_MAX_DEPTH
)
1906 if (rq
->sadb_x_ipsecrequest_mode
== 0)
1909 t
->id
.proto
= rq
->sadb_x_ipsecrequest_proto
; /* XXX check proto */
1910 if ((mode
= pfkey_mode_to_xfrm(rq
->sadb_x_ipsecrequest_mode
)) < 0)
1913 if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_USE
)
1915 else if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_UNIQUE
) {
1916 t
->reqid
= rq
->sadb_x_ipsecrequest_reqid
;
1917 if (t
->reqid
> IPSEC_MANUAL_REQID_MAX
)
1919 if (!t
->reqid
&& !(t
->reqid
= gen_reqid(net
)))
1923 /* addresses present only in tunnel mode */
1924 if (t
->mode
== XFRM_MODE_TUNNEL
) {
1925 u8
*sa
= (u8
*) (rq
+ 1);
1926 int family
, socklen
;
1928 family
= pfkey_sockaddr_extract((struct sockaddr
*)sa
,
1933 socklen
= pfkey_sockaddr_len(family
);
1934 if (pfkey_sockaddr_extract((struct sockaddr
*)(sa
+ socklen
),
1935 &t
->id
.daddr
) != family
)
1937 t
->encap_family
= family
;
1939 t
->encap_family
= xp
->family
;
1941 /* No way to set this via kame pfkey */
1948 parse_ipsecrequests(struct xfrm_policy
*xp
, struct sadb_x_policy
*pol
)
1951 int len
= pol
->sadb_x_policy_len
*8 - sizeof(struct sadb_x_policy
);
1952 struct sadb_x_ipsecrequest
*rq
= (void*)(pol
+1);
1954 if (pol
->sadb_x_policy_len
* 8 < sizeof(struct sadb_x_policy
))
1957 while (len
>= sizeof(struct sadb_x_ipsecrequest
)) {
1958 if ((err
= parse_ipsecrequest(xp
, rq
)) < 0)
1960 len
-= rq
->sadb_x_ipsecrequest_len
;
1961 rq
= (void*)((u8
*)rq
+ rq
->sadb_x_ipsecrequest_len
);
1966 static inline int pfkey_xfrm_policy2sec_ctx_size(const struct xfrm_policy
*xp
)
1968 struct xfrm_sec_ctx
*xfrm_ctx
= xp
->security
;
1971 int len
= sizeof(struct sadb_x_sec_ctx
);
1972 len
+= xfrm_ctx
->ctx_len
;
1973 return PFKEY_ALIGN8(len
);
1978 static int pfkey_xfrm_policy2msg_size(const struct xfrm_policy
*xp
)
1980 const struct xfrm_tmpl
*t
;
1981 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
1985 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1986 t
= xp
->xfrm_vec
+ i
;
1987 socklen
+= pfkey_sockaddr_len(t
->encap_family
);
1990 return sizeof(struct sadb_msg
) +
1991 (sizeof(struct sadb_lifetime
) * 3) +
1992 (sizeof(struct sadb_address
) * 2) +
1993 (sockaddr_size
* 2) +
1994 sizeof(struct sadb_x_policy
) +
1995 (xp
->xfrm_nr
* sizeof(struct sadb_x_ipsecrequest
)) +
1997 pfkey_xfrm_policy2sec_ctx_size(xp
);
2000 static struct sk_buff
* pfkey_xfrm_policy2msg_prep(const struct xfrm_policy
*xp
)
2002 struct sk_buff
*skb
;
2005 size
= pfkey_xfrm_policy2msg_size(xp
);
2007 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
2009 return ERR_PTR(-ENOBUFS
);
2014 static int pfkey_xfrm_policy2msg(struct sk_buff
*skb
, const struct xfrm_policy
*xp
, int dir
)
2016 struct sadb_msg
*hdr
;
2017 struct sadb_address
*addr
;
2018 struct sadb_lifetime
*lifetime
;
2019 struct sadb_x_policy
*pol
;
2020 struct sadb_x_sec_ctx
*sec_ctx
;
2021 struct xfrm_sec_ctx
*xfrm_ctx
;
2024 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
2025 int socklen
= pfkey_sockaddr_len(xp
->family
);
2027 size
= pfkey_xfrm_policy2msg_size(xp
);
2029 /* call should fill header later */
2030 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
2031 memset(hdr
, 0, size
); /* XXX do we need this ? */
2034 addr
= (struct sadb_address
*) skb_put(skb
,
2035 sizeof(struct sadb_address
)+sockaddr_size
);
2036 addr
->sadb_address_len
=
2037 (sizeof(struct sadb_address
)+sockaddr_size
)/
2039 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
2040 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
2041 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_s
;
2042 addr
->sadb_address_reserved
= 0;
2043 if (!pfkey_sockaddr_fill(&xp
->selector
.saddr
,
2045 (struct sockaddr
*) (addr
+ 1),
2050 addr
= (struct sadb_address
*) skb_put(skb
,
2051 sizeof(struct sadb_address
)+sockaddr_size
);
2052 addr
->sadb_address_len
=
2053 (sizeof(struct sadb_address
)+sockaddr_size
)/
2055 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
2056 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
2057 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_d
;
2058 addr
->sadb_address_reserved
= 0;
2060 pfkey_sockaddr_fill(&xp
->selector
.daddr
, xp
->selector
.dport
,
2061 (struct sockaddr
*) (addr
+ 1),
2065 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2066 sizeof(struct sadb_lifetime
));
2067 lifetime
->sadb_lifetime_len
=
2068 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2069 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
2070 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.hard_packet_limit
);
2071 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.hard_byte_limit
);
2072 lifetime
->sadb_lifetime_addtime
= xp
->lft
.hard_add_expires_seconds
;
2073 lifetime
->sadb_lifetime_usetime
= xp
->lft
.hard_use_expires_seconds
;
2075 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2076 sizeof(struct sadb_lifetime
));
2077 lifetime
->sadb_lifetime_len
=
2078 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2079 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
2080 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.soft_packet_limit
);
2081 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.soft_byte_limit
);
2082 lifetime
->sadb_lifetime_addtime
= xp
->lft
.soft_add_expires_seconds
;
2083 lifetime
->sadb_lifetime_usetime
= xp
->lft
.soft_use_expires_seconds
;
2085 lifetime
= (struct sadb_lifetime
*) skb_put(skb
,
2086 sizeof(struct sadb_lifetime
));
2087 lifetime
->sadb_lifetime_len
=
2088 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2089 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
2090 lifetime
->sadb_lifetime_allocations
= xp
->curlft
.packets
;
2091 lifetime
->sadb_lifetime_bytes
= xp
->curlft
.bytes
;
2092 lifetime
->sadb_lifetime_addtime
= xp
->curlft
.add_time
;
2093 lifetime
->sadb_lifetime_usetime
= xp
->curlft
.use_time
;
2095 pol
= (struct sadb_x_policy
*) skb_put(skb
, sizeof(struct sadb_x_policy
));
2096 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
2097 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
2098 pol
->sadb_x_policy_type
= IPSEC_POLICY_DISCARD
;
2099 if (xp
->action
== XFRM_POLICY_ALLOW
) {
2101 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
2103 pol
->sadb_x_policy_type
= IPSEC_POLICY_NONE
;
2105 pol
->sadb_x_policy_dir
= dir
+1;
2106 pol
->sadb_x_policy_reserved
= 0;
2107 pol
->sadb_x_policy_id
= xp
->index
;
2108 pol
->sadb_x_policy_priority
= xp
->priority
;
2110 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
2111 const struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ i
;
2112 struct sadb_x_ipsecrequest
*rq
;
2116 req_size
= sizeof(struct sadb_x_ipsecrequest
);
2117 if (t
->mode
== XFRM_MODE_TUNNEL
) {
2118 socklen
= pfkey_sockaddr_len(t
->encap_family
);
2119 req_size
+= socklen
* 2;
2123 rq
= (void*)skb_put(skb
, req_size
);
2124 pol
->sadb_x_policy_len
+= req_size
/8;
2125 memset(rq
, 0, sizeof(*rq
));
2126 rq
->sadb_x_ipsecrequest_len
= req_size
;
2127 rq
->sadb_x_ipsecrequest_proto
= t
->id
.proto
;
2128 if ((mode
= pfkey_mode_from_xfrm(t
->mode
)) < 0)
2130 rq
->sadb_x_ipsecrequest_mode
= mode
;
2131 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_REQUIRE
;
2133 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_UNIQUE
;
2135 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_USE
;
2136 rq
->sadb_x_ipsecrequest_reqid
= t
->reqid
;
2138 if (t
->mode
== XFRM_MODE_TUNNEL
) {
2139 u8
*sa
= (void *)(rq
+ 1);
2140 pfkey_sockaddr_fill(&t
->saddr
, 0,
2141 (struct sockaddr
*)sa
,
2143 pfkey_sockaddr_fill(&t
->id
.daddr
, 0,
2144 (struct sockaddr
*) (sa
+ socklen
),
2149 /* security context */
2150 if ((xfrm_ctx
= xp
->security
)) {
2151 int ctx_size
= pfkey_xfrm_policy2sec_ctx_size(xp
);
2153 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
, ctx_size
);
2154 sec_ctx
->sadb_x_sec_len
= ctx_size
/ sizeof(uint64_t);
2155 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
2156 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
2157 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
2158 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
2159 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
2163 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
2164 hdr
->sadb_msg_reserved
= atomic_read(&xp
->refcnt
);
2169 static int key_notify_policy(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
2171 struct sk_buff
*out_skb
;
2172 struct sadb_msg
*out_hdr
;
2175 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2176 if (IS_ERR(out_skb
))
2177 return PTR_ERR(out_skb
);
2179 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2183 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2184 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
2186 if (c
->data
.byid
&& c
->event
== XFRM_MSG_DELPOLICY
)
2187 out_hdr
->sadb_msg_type
= SADB_X_SPDDELETE2
;
2189 out_hdr
->sadb_msg_type
= event2poltype(c
->event
);
2190 out_hdr
->sadb_msg_errno
= 0;
2191 out_hdr
->sadb_msg_seq
= c
->seq
;
2192 out_hdr
->sadb_msg_pid
= c
->portid
;
2193 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
, xp_net(xp
));
2198 static int pfkey_spdadd(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2200 struct net
*net
= sock_net(sk
);
2202 struct sadb_lifetime
*lifetime
;
2203 struct sadb_address
*sa
;
2204 struct sadb_x_policy
*pol
;
2205 struct xfrm_policy
*xp
;
2207 struct sadb_x_sec_ctx
*sec_ctx
;
2209 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2210 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2211 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2214 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2215 if (pol
->sadb_x_policy_type
> IPSEC_POLICY_IPSEC
)
2217 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2220 xp
= xfrm_policy_alloc(net
, GFP_KERNEL
);
2224 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
2225 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
2226 xp
->priority
= pol
->sadb_x_policy_priority
;
2228 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1];
2229 xp
->family
= pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.saddr
);
2230 xp
->selector
.family
= xp
->family
;
2231 xp
->selector
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2232 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2233 xp
->selector
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2234 if (xp
->selector
.sport
)
2235 xp
->selector
.sport_mask
= htons(0xffff);
2237 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
2238 pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.daddr
);
2239 xp
->selector
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2241 /* Amusing, we set this twice. KAME apps appear to set same value
2242 * in both addresses.
2244 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2246 xp
->selector
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2247 if (xp
->selector
.dport
)
2248 xp
->selector
.dport_mask
= htons(0xffff);
2250 sec_ctx
= ext_hdrs
[SADB_X_EXT_SEC_CTX
- 1];
2251 if (sec_ctx
!= NULL
) {
2252 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2259 err
= security_xfrm_policy_alloc(&xp
->security
, uctx
);
2266 xp
->lft
.soft_byte_limit
= XFRM_INF
;
2267 xp
->lft
.hard_byte_limit
= XFRM_INF
;
2268 xp
->lft
.soft_packet_limit
= XFRM_INF
;
2269 xp
->lft
.hard_packet_limit
= XFRM_INF
;
2270 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1]) != NULL
) {
2271 xp
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2272 xp
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2273 xp
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2274 xp
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2276 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1]) != NULL
) {
2277 xp
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2278 xp
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2279 xp
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2280 xp
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2283 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
2284 (err
= parse_ipsecrequests(xp
, pol
)) < 0)
2287 err
= xfrm_policy_insert(pol
->sadb_x_policy_dir
-1, xp
,
2288 hdr
->sadb_msg_type
!= SADB_X_SPDUPDATE
);
2290 xfrm_audit_policy_add(xp
, err
? 0 : 1,
2291 audit_get_loginuid(current
),
2292 audit_get_sessionid(current
), 0);
2297 if (hdr
->sadb_msg_type
== SADB_X_SPDUPDATE
)
2298 c
.event
= XFRM_MSG_UPDPOLICY
;
2300 c
.event
= XFRM_MSG_NEWPOLICY
;
2302 c
.seq
= hdr
->sadb_msg_seq
;
2303 c
.portid
= hdr
->sadb_msg_pid
;
2305 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2311 xfrm_policy_destroy(xp
);
2315 static int pfkey_spddelete(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2317 struct net
*net
= sock_net(sk
);
2319 struct sadb_address
*sa
;
2320 struct sadb_x_policy
*pol
;
2321 struct xfrm_policy
*xp
;
2322 struct xfrm_selector sel
;
2324 struct sadb_x_sec_ctx
*sec_ctx
;
2325 struct xfrm_sec_ctx
*pol_ctx
= NULL
;
2327 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2328 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2329 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2332 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2333 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2336 memset(&sel
, 0, sizeof(sel
));
2338 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1];
2339 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2340 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2341 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2342 sel
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2344 sel
.sport_mask
= htons(0xffff);
2346 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
2347 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2348 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2349 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2350 sel
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2352 sel
.dport_mask
= htons(0xffff);
2354 sec_ctx
= ext_hdrs
[SADB_X_EXT_SEC_CTX
- 1];
2355 if (sec_ctx
!= NULL
) {
2356 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
2361 err
= security_xfrm_policy_alloc(&pol_ctx
, uctx
);
2367 xp
= xfrm_policy_bysel_ctx(net
, DUMMY_MARK
, XFRM_POLICY_TYPE_MAIN
,
2368 pol
->sadb_x_policy_dir
- 1, &sel
, pol_ctx
,
2370 security_xfrm_policy_free(pol_ctx
);
2374 xfrm_audit_policy_delete(xp
, err
? 0 : 1,
2375 audit_get_loginuid(current
),
2376 audit_get_sessionid(current
), 0);
2381 c
.seq
= hdr
->sadb_msg_seq
;
2382 c
.portid
= hdr
->sadb_msg_pid
;
2384 c
.event
= XFRM_MSG_DELPOLICY
;
2385 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2390 xfrm_garbage_collect(net
);
2394 static int key_pol_get_resp(struct sock
*sk
, struct xfrm_policy
*xp
, const struct sadb_msg
*hdr
, int dir
)
2397 struct sk_buff
*out_skb
;
2398 struct sadb_msg
*out_hdr
;
2401 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2402 if (IS_ERR(out_skb
)) {
2403 err
= PTR_ERR(out_skb
);
2406 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2410 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2411 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
2412 out_hdr
->sadb_msg_type
= hdr
->sadb_msg_type
;
2413 out_hdr
->sadb_msg_satype
= 0;
2414 out_hdr
->sadb_msg_errno
= 0;
2415 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
2416 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
2417 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_ONE
, sk
, xp_net(xp
));
2424 #ifdef CONFIG_NET_KEY_MIGRATE
2425 static int pfkey_sockaddr_pair_size(sa_family_t family
)
2427 return PFKEY_ALIGN8(pfkey_sockaddr_len(family
) * 2);
2430 static int parse_sockaddr_pair(struct sockaddr
*sa
, int ext_len
,
2431 xfrm_address_t
*saddr
, xfrm_address_t
*daddr
,
2436 if (ext_len
< pfkey_sockaddr_pair_size(sa
->sa_family
))
2439 af
= pfkey_sockaddr_extract(sa
, saddr
);
2443 socklen
= pfkey_sockaddr_len(af
);
2444 if (pfkey_sockaddr_extract((struct sockaddr
*) (((u8
*)sa
) + socklen
),
2452 static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest
*rq1
, int len
,
2453 struct xfrm_migrate
*m
)
2456 struct sadb_x_ipsecrequest
*rq2
;
2459 if (len
<= sizeof(struct sadb_x_ipsecrequest
) ||
2460 len
< rq1
->sadb_x_ipsecrequest_len
)
2464 err
= parse_sockaddr_pair((struct sockaddr
*)(rq1
+ 1),
2465 rq1
->sadb_x_ipsecrequest_len
,
2466 &m
->old_saddr
, &m
->old_daddr
,
2471 rq2
= (struct sadb_x_ipsecrequest
*)((u8
*)rq1
+ rq1
->sadb_x_ipsecrequest_len
);
2472 len
-= rq1
->sadb_x_ipsecrequest_len
;
2474 if (len
<= sizeof(struct sadb_x_ipsecrequest
) ||
2475 len
< rq2
->sadb_x_ipsecrequest_len
)
2479 err
= parse_sockaddr_pair((struct sockaddr
*)(rq2
+ 1),
2480 rq2
->sadb_x_ipsecrequest_len
,
2481 &m
->new_saddr
, &m
->new_daddr
,
2486 if (rq1
->sadb_x_ipsecrequest_proto
!= rq2
->sadb_x_ipsecrequest_proto
||
2487 rq1
->sadb_x_ipsecrequest_mode
!= rq2
->sadb_x_ipsecrequest_mode
||
2488 rq1
->sadb_x_ipsecrequest_reqid
!= rq2
->sadb_x_ipsecrequest_reqid
)
2491 m
->proto
= rq1
->sadb_x_ipsecrequest_proto
;
2492 if ((mode
= pfkey_mode_to_xfrm(rq1
->sadb_x_ipsecrequest_mode
)) < 0)
2495 m
->reqid
= rq1
->sadb_x_ipsecrequest_reqid
;
2497 return ((int)(rq1
->sadb_x_ipsecrequest_len
+
2498 rq2
->sadb_x_ipsecrequest_len
));
2501 static int pfkey_migrate(struct sock
*sk
, struct sk_buff
*skb
,
2502 const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2504 int i
, len
, ret
, err
= -EINVAL
;
2506 struct sadb_address
*sa
;
2507 struct sadb_x_kmaddress
*kma
;
2508 struct sadb_x_policy
*pol
;
2509 struct sadb_x_ipsecrequest
*rq
;
2510 struct xfrm_selector sel
;
2511 struct xfrm_migrate m
[XFRM_MAX_DEPTH
];
2512 struct xfrm_kmaddress k
;
2513 struct net
*net
= sock_net(sk
);
2515 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
- 1],
2516 ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1]) ||
2517 !ext_hdrs
[SADB_X_EXT_POLICY
- 1]) {
2522 kma
= ext_hdrs
[SADB_X_EXT_KMADDRESS
- 1];
2523 pol
= ext_hdrs
[SADB_X_EXT_POLICY
- 1];
2525 if (pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
) {
2531 /* convert sadb_x_kmaddress to xfrm_kmaddress */
2532 k
.reserved
= kma
->sadb_x_kmaddress_reserved
;
2533 ret
= parse_sockaddr_pair((struct sockaddr
*)(kma
+ 1),
2534 8*(kma
->sadb_x_kmaddress_len
) - sizeof(*kma
),
2535 &k
.local
, &k
.remote
, &k
.family
);
2542 dir
= pol
->sadb_x_policy_dir
- 1;
2543 memset(&sel
, 0, sizeof(sel
));
2545 /* set source address info of selector */
2546 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
- 1];
2547 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2548 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2549 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2550 sel
.sport
= ((struct sockaddr_in
*)(sa
+ 1))->sin_port
;
2552 sel
.sport_mask
= htons(0xffff);
2554 /* set destination address info of selector */
2555 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1],
2556 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2557 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2558 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2559 sel
.dport
= ((struct sockaddr_in
*)(sa
+ 1))->sin_port
;
2561 sel
.dport_mask
= htons(0xffff);
2563 rq
= (struct sadb_x_ipsecrequest
*)(pol
+ 1);
2565 /* extract ipsecrequests */
2567 len
= pol
->sadb_x_policy_len
* 8 - sizeof(struct sadb_x_policy
);
2569 while (len
> 0 && i
< XFRM_MAX_DEPTH
) {
2570 ret
= ipsecrequests_to_migrate(rq
, len
, &m
[i
]);
2575 rq
= (struct sadb_x_ipsecrequest
*)((u8
*)rq
+ ret
);
2581 if (!i
|| len
> 0) {
2586 return xfrm_migrate(&sel
, dir
, XFRM_POLICY_TYPE_MAIN
, m
, i
,
2587 kma
? &k
: NULL
, net
);
2593 static int pfkey_migrate(struct sock
*sk
, struct sk_buff
*skb
,
2594 const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2596 return -ENOPROTOOPT
;
2601 static int pfkey_spdget(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2603 struct net
*net
= sock_net(sk
);
2605 int err
= 0, delete;
2606 struct sadb_x_policy
*pol
;
2607 struct xfrm_policy
*xp
;
2610 if ((pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1]) == NULL
)
2613 dir
= xfrm_policy_id2dir(pol
->sadb_x_policy_id
);
2614 if (dir
>= XFRM_POLICY_MAX
)
2617 delete = (hdr
->sadb_msg_type
== SADB_X_SPDDELETE2
);
2618 xp
= xfrm_policy_byid(net
, DUMMY_MARK
, XFRM_POLICY_TYPE_MAIN
,
2619 dir
, pol
->sadb_x_policy_id
, delete, &err
);
2624 xfrm_audit_policy_delete(xp
, err
? 0 : 1,
2625 audit_get_loginuid(current
),
2626 audit_get_sessionid(current
), 0);
2630 c
.seq
= hdr
->sadb_msg_seq
;
2631 c
.portid
= hdr
->sadb_msg_pid
;
2633 c
.event
= XFRM_MSG_DELPOLICY
;
2634 km_policy_notify(xp
, dir
, &c
);
2636 err
= key_pol_get_resp(sk
, xp
, hdr
, dir
);
2641 if (delete && err
== 0)
2642 xfrm_garbage_collect(net
);
2646 static int dump_sp(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
2648 struct pfkey_sock
*pfk
= ptr
;
2649 struct sk_buff
*out_skb
;
2650 struct sadb_msg
*out_hdr
;
2653 if (!pfkey_can_dump(&pfk
->sk
))
2656 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2657 if (IS_ERR(out_skb
))
2658 return PTR_ERR(out_skb
);
2660 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2664 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2665 out_hdr
->sadb_msg_version
= pfk
->dump
.msg_version
;
2666 out_hdr
->sadb_msg_type
= SADB_X_SPDDUMP
;
2667 out_hdr
->sadb_msg_satype
= SADB_SATYPE_UNSPEC
;
2668 out_hdr
->sadb_msg_errno
= 0;
2669 out_hdr
->sadb_msg_seq
= count
+ 1;
2670 out_hdr
->sadb_msg_pid
= pfk
->dump
.msg_portid
;
2673 pfkey_broadcast(pfk
->dump
.skb
, GFP_ATOMIC
, BROADCAST_ONE
,
2674 &pfk
->sk
, sock_net(&pfk
->sk
));
2675 pfk
->dump
.skb
= out_skb
;
2680 static int pfkey_dump_sp(struct pfkey_sock
*pfk
)
2682 struct net
*net
= sock_net(&pfk
->sk
);
2683 return xfrm_policy_walk(net
, &pfk
->dump
.u
.policy
, dump_sp
, (void *) pfk
);
2686 static void pfkey_dump_sp_done(struct pfkey_sock
*pfk
)
2688 struct net
*net
= sock_net((struct sock
*)pfk
);
2690 xfrm_policy_walk_done(&pfk
->dump
.u
.policy
, net
);
2693 static int pfkey_spddump(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2695 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
2697 if (pfk
->dump
.dump
!= NULL
)
2700 pfk
->dump
.msg_version
= hdr
->sadb_msg_version
;
2701 pfk
->dump
.msg_portid
= hdr
->sadb_msg_pid
;
2702 pfk
->dump
.dump
= pfkey_dump_sp
;
2703 pfk
->dump
.done
= pfkey_dump_sp_done
;
2704 xfrm_policy_walk_init(&pfk
->dump
.u
.policy
, XFRM_POLICY_TYPE_MAIN
);
2706 return pfkey_do_dump(pfk
);
2709 static int key_notify_policy_flush(const struct km_event
*c
)
2711 struct sk_buff
*skb_out
;
2712 struct sadb_msg
*hdr
;
2714 skb_out
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
2717 hdr
= (struct sadb_msg
*) skb_put(skb_out
, sizeof(struct sadb_msg
));
2718 hdr
->sadb_msg_type
= SADB_X_SPDFLUSH
;
2719 hdr
->sadb_msg_seq
= c
->seq
;
2720 hdr
->sadb_msg_pid
= c
->portid
;
2721 hdr
->sadb_msg_version
= PF_KEY_V2
;
2722 hdr
->sadb_msg_errno
= (uint8_t) 0;
2723 hdr
->sadb_msg_satype
= SADB_SATYPE_UNSPEC
;
2724 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
2725 hdr
->sadb_msg_reserved
= 0;
2726 pfkey_broadcast(skb_out
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
, c
->net
);
2731 static int pfkey_spdflush(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2733 struct net
*net
= sock_net(sk
);
2735 struct xfrm_audit audit_info
;
2738 audit_info
.loginuid
= audit_get_loginuid(current
);
2739 audit_info
.sessionid
= audit_get_sessionid(current
);
2740 audit_info
.secid
= 0;
2741 err
= xfrm_policy_flush(net
, XFRM_POLICY_TYPE_MAIN
, &audit_info
);
2742 err2
= unicast_flush_resp(sk
, hdr
);
2744 if (err
== -ESRCH
) /* empty table - old silent behavior */
2749 c
.data
.type
= XFRM_POLICY_TYPE_MAIN
;
2750 c
.event
= XFRM_MSG_FLUSHPOLICY
;
2751 c
.portid
= hdr
->sadb_msg_pid
;
2752 c
.seq
= hdr
->sadb_msg_seq
;
2754 km_policy_notify(NULL
, 0, &c
);
2759 typedef int (*pfkey_handler
)(struct sock
*sk
, struct sk_buff
*skb
,
2760 const struct sadb_msg
*hdr
, void * const *ext_hdrs
);
2761 static const pfkey_handler pfkey_funcs
[SADB_MAX
+ 1] = {
2762 [SADB_RESERVED
] = pfkey_reserved
,
2763 [SADB_GETSPI
] = pfkey_getspi
,
2764 [SADB_UPDATE
] = pfkey_add
,
2765 [SADB_ADD
] = pfkey_add
,
2766 [SADB_DELETE
] = pfkey_delete
,
2767 [SADB_GET
] = pfkey_get
,
2768 [SADB_ACQUIRE
] = pfkey_acquire
,
2769 [SADB_REGISTER
] = pfkey_register
,
2770 [SADB_EXPIRE
] = NULL
,
2771 [SADB_FLUSH
] = pfkey_flush
,
2772 [SADB_DUMP
] = pfkey_dump
,
2773 [SADB_X_PROMISC
] = pfkey_promisc
,
2774 [SADB_X_PCHANGE
] = NULL
,
2775 [SADB_X_SPDUPDATE
] = pfkey_spdadd
,
2776 [SADB_X_SPDADD
] = pfkey_spdadd
,
2777 [SADB_X_SPDDELETE
] = pfkey_spddelete
,
2778 [SADB_X_SPDGET
] = pfkey_spdget
,
2779 [SADB_X_SPDACQUIRE
] = NULL
,
2780 [SADB_X_SPDDUMP
] = pfkey_spddump
,
2781 [SADB_X_SPDFLUSH
] = pfkey_spdflush
,
2782 [SADB_X_SPDSETIDX
] = pfkey_spdadd
,
2783 [SADB_X_SPDDELETE2
] = pfkey_spdget
,
2784 [SADB_X_MIGRATE
] = pfkey_migrate
,
2787 static int pfkey_process(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
)
2789 void *ext_hdrs
[SADB_EXT_MAX
];
2792 pfkey_broadcast(skb_clone(skb
, GFP_KERNEL
), GFP_KERNEL
,
2793 BROADCAST_PROMISC_ONLY
, NULL
, sock_net(sk
));
2795 memset(ext_hdrs
, 0, sizeof(ext_hdrs
));
2796 err
= parse_exthdrs(skb
, hdr
, ext_hdrs
);
2799 if (pfkey_funcs
[hdr
->sadb_msg_type
])
2800 err
= pfkey_funcs
[hdr
->sadb_msg_type
](sk
, skb
, hdr
, ext_hdrs
);
2805 static struct sadb_msg
*pfkey_get_base_msg(struct sk_buff
*skb
, int *errp
)
2807 struct sadb_msg
*hdr
= NULL
;
2809 if (skb
->len
< sizeof(*hdr
)) {
2812 hdr
= (struct sadb_msg
*) skb
->data
;
2813 if (hdr
->sadb_msg_version
!= PF_KEY_V2
||
2814 hdr
->sadb_msg_reserved
!= 0 ||
2815 (hdr
->sadb_msg_type
<= SADB_RESERVED
||
2816 hdr
->sadb_msg_type
> SADB_MAX
)) {
2819 } else if (hdr
->sadb_msg_len
!= (skb
->len
/
2820 sizeof(uint64_t)) ||
2821 hdr
->sadb_msg_len
< (sizeof(struct sadb_msg
) /
2822 sizeof(uint64_t))) {
2832 static inline int aalg_tmpl_set(const struct xfrm_tmpl
*t
,
2833 const struct xfrm_algo_desc
*d
)
2835 unsigned int id
= d
->desc
.sadb_alg_id
;
2837 if (id
>= sizeof(t
->aalgos
) * 8)
2840 return (t
->aalgos
>> id
) & 1;
2843 static inline int ealg_tmpl_set(const struct xfrm_tmpl
*t
,
2844 const struct xfrm_algo_desc
*d
)
2846 unsigned int id
= d
->desc
.sadb_alg_id
;
2848 if (id
>= sizeof(t
->ealgos
) * 8)
2851 return (t
->ealgos
>> id
) & 1;
2854 static int count_ah_combs(const struct xfrm_tmpl
*t
)
2858 for (i
= 0; ; i
++) {
2859 const struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2862 if (!aalg
->pfkey_supported
)
2864 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2865 sz
+= sizeof(struct sadb_comb
);
2867 return sz
+ sizeof(struct sadb_prop
);
2870 static int count_esp_combs(const struct xfrm_tmpl
*t
)
2874 for (i
= 0; ; i
++) {
2875 const struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2879 if (!ealg
->pfkey_supported
)
2882 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2885 for (k
= 1; ; k
++) {
2886 const struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2890 if (!aalg
->pfkey_supported
)
2893 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2894 sz
+= sizeof(struct sadb_comb
);
2897 return sz
+ sizeof(struct sadb_prop
);
2900 static void dump_ah_combs(struct sk_buff
*skb
, const struct xfrm_tmpl
*t
)
2902 struct sadb_prop
*p
;
2905 p
= (struct sadb_prop
*)skb_put(skb
, sizeof(struct sadb_prop
));
2906 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2907 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2908 p
->sadb_prop_replay
= 32;
2909 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2911 for (i
= 0; ; i
++) {
2912 const struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2916 if (!aalg
->pfkey_supported
)
2919 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
) {
2920 struct sadb_comb
*c
;
2921 c
= (struct sadb_comb
*)skb_put(skb
, sizeof(struct sadb_comb
));
2922 memset(c
, 0, sizeof(*c
));
2923 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2924 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2925 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2926 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2927 c
->sadb_comb_hard_addtime
= 24*60*60;
2928 c
->sadb_comb_soft_addtime
= 20*60*60;
2929 c
->sadb_comb_hard_usetime
= 8*60*60;
2930 c
->sadb_comb_soft_usetime
= 7*60*60;
2935 static void dump_esp_combs(struct sk_buff
*skb
, const struct xfrm_tmpl
*t
)
2937 struct sadb_prop
*p
;
2940 p
= (struct sadb_prop
*)skb_put(skb
, sizeof(struct sadb_prop
));
2941 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2942 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2943 p
->sadb_prop_replay
= 32;
2944 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2947 const struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2951 if (!ealg
->pfkey_supported
)
2954 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2957 for (k
= 1; ; k
++) {
2958 struct sadb_comb
*c
;
2959 const struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2962 if (!aalg
->pfkey_supported
)
2964 if (!(aalg_tmpl_set(t
, aalg
) && aalg
->available
))
2966 c
= (struct sadb_comb
*)skb_put(skb
, sizeof(struct sadb_comb
));
2967 memset(c
, 0, sizeof(*c
));
2968 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2969 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2970 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2971 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2972 c
->sadb_comb_encrypt
= ealg
->desc
.sadb_alg_id
;
2973 c
->sadb_comb_encrypt_minbits
= ealg
->desc
.sadb_alg_minbits
;
2974 c
->sadb_comb_encrypt_maxbits
= ealg
->desc
.sadb_alg_maxbits
;
2975 c
->sadb_comb_hard_addtime
= 24*60*60;
2976 c
->sadb_comb_soft_addtime
= 20*60*60;
2977 c
->sadb_comb_hard_usetime
= 8*60*60;
2978 c
->sadb_comb_soft_usetime
= 7*60*60;
2983 static int key_notify_policy_expire(struct xfrm_policy
*xp
, const struct km_event
*c
)
2988 static int key_notify_sa_expire(struct xfrm_state
*x
, const struct km_event
*c
)
2990 struct sk_buff
*out_skb
;
2991 struct sadb_msg
*out_hdr
;
2995 hard
= c
->data
.hard
;
3001 out_skb
= pfkey_xfrm_state2msg_expire(x
, hsc
);
3002 if (IS_ERR(out_skb
))
3003 return PTR_ERR(out_skb
);
3005 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
3006 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
3007 out_hdr
->sadb_msg_type
= SADB_EXPIRE
;
3008 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
3009 out_hdr
->sadb_msg_errno
= 0;
3010 out_hdr
->sadb_msg_reserved
= 0;
3011 out_hdr
->sadb_msg_seq
= 0;
3012 out_hdr
->sadb_msg_pid
= 0;
3014 pfkey_broadcast(out_skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
, xs_net(x
));
3018 static int pfkey_send_notify(struct xfrm_state
*x
, const struct km_event
*c
)
3020 struct net
*net
= x
? xs_net(x
) : c
->net
;
3021 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
3023 if (atomic_read(&net_pfkey
->socks_nr
) == 0)
3027 case XFRM_MSG_EXPIRE
:
3028 return key_notify_sa_expire(x
, c
);
3029 case XFRM_MSG_DELSA
:
3030 case XFRM_MSG_NEWSA
:
3031 case XFRM_MSG_UPDSA
:
3032 return key_notify_sa(x
, c
);
3033 case XFRM_MSG_FLUSHSA
:
3034 return key_notify_sa_flush(c
);
3035 case XFRM_MSG_NEWAE
: /* not yet supported */
3038 pr_err("pfkey: Unknown SA event %d\n", c
->event
);
3045 static int pfkey_send_policy_notify(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
3047 if (xp
&& xp
->type
!= XFRM_POLICY_TYPE_MAIN
)
3051 case XFRM_MSG_POLEXPIRE
:
3052 return key_notify_policy_expire(xp
, c
);
3053 case XFRM_MSG_DELPOLICY
:
3054 case XFRM_MSG_NEWPOLICY
:
3055 case XFRM_MSG_UPDPOLICY
:
3056 return key_notify_policy(xp
, dir
, c
);
3057 case XFRM_MSG_FLUSHPOLICY
:
3058 if (c
->data
.type
!= XFRM_POLICY_TYPE_MAIN
)
3060 return key_notify_policy_flush(c
);
3062 pr_err("pfkey: Unknown policy event %d\n", c
->event
);
3069 static u32
get_acqseq(void)
3072 static atomic_t acqseq
;
3075 res
= atomic_inc_return(&acqseq
);
3080 static bool pfkey_is_alive(const struct km_event
*c
)
3082 struct netns_pfkey
*net_pfkey
= net_generic(c
->net
, pfkey_net_id
);
3084 bool is_alive
= false;
3087 sk_for_each_rcu(sk
, &net_pfkey
->table
) {
3088 if (pfkey_sk(sk
)->registered
) {
3098 static int pfkey_send_acquire(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*xp
)
3100 struct sk_buff
*skb
;
3101 struct sadb_msg
*hdr
;
3102 struct sadb_address
*addr
;
3103 struct sadb_x_policy
*pol
;
3106 struct sadb_x_sec_ctx
*sec_ctx
;
3107 struct xfrm_sec_ctx
*xfrm_ctx
;
3110 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
3114 size
= sizeof(struct sadb_msg
) +
3115 (sizeof(struct sadb_address
) * 2) +
3116 (sockaddr_size
* 2) +
3117 sizeof(struct sadb_x_policy
);
3119 if (x
->id
.proto
== IPPROTO_AH
)
3120 size
+= count_ah_combs(t
);
3121 else if (x
->id
.proto
== IPPROTO_ESP
)
3122 size
+= count_esp_combs(t
);
3124 if ((xfrm_ctx
= x
->security
)) {
3125 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
3126 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
3129 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
3133 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
3134 hdr
->sadb_msg_version
= PF_KEY_V2
;
3135 hdr
->sadb_msg_type
= SADB_ACQUIRE
;
3136 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
3137 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3138 hdr
->sadb_msg_errno
= 0;
3139 hdr
->sadb_msg_reserved
= 0;
3140 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3141 hdr
->sadb_msg_pid
= 0;
3144 addr
= (struct sadb_address
*) skb_put(skb
,
3145 sizeof(struct sadb_address
)+sockaddr_size
);
3146 addr
->sadb_address_len
=
3147 (sizeof(struct sadb_address
)+sockaddr_size
)/
3149 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3150 addr
->sadb_address_proto
= 0;
3151 addr
->sadb_address_reserved
= 0;
3152 addr
->sadb_address_prefixlen
=
3153 pfkey_sockaddr_fill(&x
->props
.saddr
, 0,
3154 (struct sockaddr
*) (addr
+ 1),
3156 if (!addr
->sadb_address_prefixlen
)
3160 addr
= (struct sadb_address
*) skb_put(skb
,
3161 sizeof(struct sadb_address
)+sockaddr_size
);
3162 addr
->sadb_address_len
=
3163 (sizeof(struct sadb_address
)+sockaddr_size
)/
3165 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3166 addr
->sadb_address_proto
= 0;
3167 addr
->sadb_address_reserved
= 0;
3168 addr
->sadb_address_prefixlen
=
3169 pfkey_sockaddr_fill(&x
->id
.daddr
, 0,
3170 (struct sockaddr
*) (addr
+ 1),
3172 if (!addr
->sadb_address_prefixlen
)
3175 pol
= (struct sadb_x_policy
*) skb_put(skb
, sizeof(struct sadb_x_policy
));
3176 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
3177 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
3178 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
3179 pol
->sadb_x_policy_dir
= XFRM_POLICY_OUT
+ 1;
3180 pol
->sadb_x_policy_reserved
= 0;
3181 pol
->sadb_x_policy_id
= xp
->index
;
3182 pol
->sadb_x_policy_priority
= xp
->priority
;
3184 /* Set sadb_comb's. */
3185 if (x
->id
.proto
== IPPROTO_AH
)
3186 dump_ah_combs(skb
, t
);
3187 else if (x
->id
.proto
== IPPROTO_ESP
)
3188 dump_esp_combs(skb
, t
);
3190 /* security context */
3192 sec_ctx
= (struct sadb_x_sec_ctx
*) skb_put(skb
,
3193 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
3194 sec_ctx
->sadb_x_sec_len
=
3195 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
3196 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
3197 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
3198 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
3199 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
3200 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
3204 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
, xs_net(x
));
3207 static struct xfrm_policy
*pfkey_compile_policy(struct sock
*sk
, int opt
,
3208 u8
*data
, int len
, int *dir
)
3210 struct net
*net
= sock_net(sk
);
3211 struct xfrm_policy
*xp
;
3212 struct sadb_x_policy
*pol
= (struct sadb_x_policy
*)data
;
3213 struct sadb_x_sec_ctx
*sec_ctx
;
3215 switch (sk
->sk_family
) {
3217 if (opt
!= IP_IPSEC_POLICY
) {
3222 #if IS_ENABLED(CONFIG_IPV6)
3224 if (opt
!= IPV6_IPSEC_POLICY
) {
3237 if (len
< sizeof(struct sadb_x_policy
) ||
3238 pol
->sadb_x_policy_len
*8 > len
||
3239 pol
->sadb_x_policy_type
> IPSEC_POLICY_BYPASS
||
3240 (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
> IPSEC_DIR_OUTBOUND
))
3243 xp
= xfrm_policy_alloc(net
, GFP_ATOMIC
);
3249 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
3250 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
3252 xp
->lft
.soft_byte_limit
= XFRM_INF
;
3253 xp
->lft
.hard_byte_limit
= XFRM_INF
;
3254 xp
->lft
.soft_packet_limit
= XFRM_INF
;
3255 xp
->lft
.hard_packet_limit
= XFRM_INF
;
3256 xp
->family
= sk
->sk_family
;
3259 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
3260 (*dir
= parse_ipsecrequests(xp
, pol
)) < 0)
3263 /* security context too */
3264 if (len
>= (pol
->sadb_x_policy_len
*8 +
3265 sizeof(struct sadb_x_sec_ctx
))) {
3266 char *p
= (char *)pol
;
3267 struct xfrm_user_sec_ctx
*uctx
;
3269 p
+= pol
->sadb_x_policy_len
*8;
3270 sec_ctx
= (struct sadb_x_sec_ctx
*)p
;
3271 if (len
< pol
->sadb_x_policy_len
*8 +
3272 sec_ctx
->sadb_x_sec_len
) {
3276 if ((*dir
= verify_sec_ctx_len(p
)))
3278 uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
);
3279 *dir
= security_xfrm_policy_alloc(&xp
->security
, uctx
);
3286 *dir
= pol
->sadb_x_policy_dir
-1;
3291 xfrm_policy_destroy(xp
);
3295 static int pfkey_send_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
3297 struct sk_buff
*skb
;
3298 struct sadb_msg
*hdr
;
3300 struct sadb_address
*addr
;
3301 struct sadb_x_nat_t_port
*n_port
;
3304 __u8 satype
= (x
->id
.proto
== IPPROTO_ESP
? SADB_SATYPE_ESP
: 0);
3305 struct xfrm_encap_tmpl
*natt
= NULL
;
3307 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
3319 /* Build an SADB_X_NAT_T_NEW_MAPPING message:
3321 * HDR | SA | ADDRESS_SRC (old addr) | NAT_T_SPORT (old port) |
3322 * ADDRESS_DST (new addr) | NAT_T_DPORT (new port)
3325 size
= sizeof(struct sadb_msg
) +
3326 sizeof(struct sadb_sa
) +
3327 (sizeof(struct sadb_address
) * 2) +
3328 (sockaddr_size
* 2) +
3329 (sizeof(struct sadb_x_nat_t_port
) * 2);
3331 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
3335 hdr
= (struct sadb_msg
*) skb_put(skb
, sizeof(struct sadb_msg
));
3336 hdr
->sadb_msg_version
= PF_KEY_V2
;
3337 hdr
->sadb_msg_type
= SADB_X_NAT_T_NEW_MAPPING
;
3338 hdr
->sadb_msg_satype
= satype
;
3339 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3340 hdr
->sadb_msg_errno
= 0;
3341 hdr
->sadb_msg_reserved
= 0;
3342 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3343 hdr
->sadb_msg_pid
= 0;
3346 sa
= (struct sadb_sa
*) skb_put(skb
, sizeof(struct sadb_sa
));
3347 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
3348 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
3349 sa
->sadb_sa_spi
= x
->id
.spi
;
3350 sa
->sadb_sa_replay
= 0;
3351 sa
->sadb_sa_state
= 0;
3352 sa
->sadb_sa_auth
= 0;
3353 sa
->sadb_sa_encrypt
= 0;
3354 sa
->sadb_sa_flags
= 0;
3356 /* ADDRESS_SRC (old addr) */
3357 addr
= (struct sadb_address
*)
3358 skb_put(skb
, sizeof(struct sadb_address
)+sockaddr_size
);
3359 addr
->sadb_address_len
=
3360 (sizeof(struct sadb_address
)+sockaddr_size
)/
3362 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3363 addr
->sadb_address_proto
= 0;
3364 addr
->sadb_address_reserved
= 0;
3365 addr
->sadb_address_prefixlen
=
3366 pfkey_sockaddr_fill(&x
->props
.saddr
, 0,
3367 (struct sockaddr
*) (addr
+ 1),
3369 if (!addr
->sadb_address_prefixlen
)
3372 /* NAT_T_SPORT (old port) */
3373 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
3374 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3375 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
3376 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
3377 n_port
->sadb_x_nat_t_port_reserved
= 0;
3379 /* ADDRESS_DST (new addr) */
3380 addr
= (struct sadb_address
*)
3381 skb_put(skb
, sizeof(struct sadb_address
)+sockaddr_size
);
3382 addr
->sadb_address_len
=
3383 (sizeof(struct sadb_address
)+sockaddr_size
)/
3385 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3386 addr
->sadb_address_proto
= 0;
3387 addr
->sadb_address_reserved
= 0;
3388 addr
->sadb_address_prefixlen
=
3389 pfkey_sockaddr_fill(ipaddr
, 0,
3390 (struct sockaddr
*) (addr
+ 1),
3392 if (!addr
->sadb_address_prefixlen
)
3395 /* NAT_T_DPORT (new port) */
3396 n_port
= (struct sadb_x_nat_t_port
*) skb_put(skb
, sizeof (*n_port
));
3397 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3398 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
3399 n_port
->sadb_x_nat_t_port_port
= sport
;
3400 n_port
->sadb_x_nat_t_port_reserved
= 0;
3402 return pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_REGISTERED
, NULL
, xs_net(x
));
3405 #ifdef CONFIG_NET_KEY_MIGRATE
3406 static int set_sadb_address(struct sk_buff
*skb
, int sasize
, int type
,
3407 const struct xfrm_selector
*sel
)
3409 struct sadb_address
*addr
;
3410 addr
= (struct sadb_address
*)skb_put(skb
, sizeof(struct sadb_address
) + sasize
);
3411 addr
->sadb_address_len
= (sizeof(struct sadb_address
) + sasize
)/8;
3412 addr
->sadb_address_exttype
= type
;
3413 addr
->sadb_address_proto
= sel
->proto
;
3414 addr
->sadb_address_reserved
= 0;
3417 case SADB_EXT_ADDRESS_SRC
:
3418 addr
->sadb_address_prefixlen
= sel
->prefixlen_s
;
3419 pfkey_sockaddr_fill(&sel
->saddr
, 0,
3420 (struct sockaddr
*)(addr
+ 1),
3423 case SADB_EXT_ADDRESS_DST
:
3424 addr
->sadb_address_prefixlen
= sel
->prefixlen_d
;
3425 pfkey_sockaddr_fill(&sel
->daddr
, 0,
3426 (struct sockaddr
*)(addr
+ 1),
3437 static int set_sadb_kmaddress(struct sk_buff
*skb
, const struct xfrm_kmaddress
*k
)
3439 struct sadb_x_kmaddress
*kma
;
3441 int family
= k
->family
;
3442 int socklen
= pfkey_sockaddr_len(family
);
3445 size_req
= (sizeof(struct sadb_x_kmaddress
) +
3446 pfkey_sockaddr_pair_size(family
));
3448 kma
= (struct sadb_x_kmaddress
*)skb_put(skb
, size_req
);
3449 memset(kma
, 0, size_req
);
3450 kma
->sadb_x_kmaddress_len
= size_req
/ 8;
3451 kma
->sadb_x_kmaddress_exttype
= SADB_X_EXT_KMADDRESS
;
3452 kma
->sadb_x_kmaddress_reserved
= k
->reserved
;
3454 sa
= (u8
*)(kma
+ 1);
3455 if (!pfkey_sockaddr_fill(&k
->local
, 0, (struct sockaddr
*)sa
, family
) ||
3456 !pfkey_sockaddr_fill(&k
->remote
, 0, (struct sockaddr
*)(sa
+socklen
), family
))
3462 static int set_ipsecrequest(struct sk_buff
*skb
,
3463 uint8_t proto
, uint8_t mode
, int level
,
3464 uint32_t reqid
, uint8_t family
,
3465 const xfrm_address_t
*src
, const xfrm_address_t
*dst
)
3467 struct sadb_x_ipsecrequest
*rq
;
3469 int socklen
= pfkey_sockaddr_len(family
);
3472 size_req
= sizeof(struct sadb_x_ipsecrequest
) +
3473 pfkey_sockaddr_pair_size(family
);
3475 rq
= (struct sadb_x_ipsecrequest
*)skb_put(skb
, size_req
);
3476 memset(rq
, 0, size_req
);
3477 rq
->sadb_x_ipsecrequest_len
= size_req
;
3478 rq
->sadb_x_ipsecrequest_proto
= proto
;
3479 rq
->sadb_x_ipsecrequest_mode
= mode
;
3480 rq
->sadb_x_ipsecrequest_level
= level
;
3481 rq
->sadb_x_ipsecrequest_reqid
= reqid
;
3483 sa
= (u8
*) (rq
+ 1);
3484 if (!pfkey_sockaddr_fill(src
, 0, (struct sockaddr
*)sa
, family
) ||
3485 !pfkey_sockaddr_fill(dst
, 0, (struct sockaddr
*)(sa
+ socklen
), family
))
3492 #ifdef CONFIG_NET_KEY_MIGRATE
3493 static int pfkey_send_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
3494 const struct xfrm_migrate
*m
, int num_bundles
,
3495 const struct xfrm_kmaddress
*k
)
3501 struct sk_buff
*skb
;
3502 struct sadb_msg
*hdr
;
3503 struct sadb_x_policy
*pol
;
3504 const struct xfrm_migrate
*mp
;
3506 if (type
!= XFRM_POLICY_TYPE_MAIN
)
3509 if (num_bundles
<= 0 || num_bundles
> XFRM_MAX_DEPTH
)
3513 /* addresses for KM */
3514 size
+= PFKEY_ALIGN8(sizeof(struct sadb_x_kmaddress
) +
3515 pfkey_sockaddr_pair_size(k
->family
));
3519 sasize_sel
= pfkey_sockaddr_size(sel
->family
);
3522 size
+= (sizeof(struct sadb_address
) + sasize_sel
) * 2;
3525 size_pol
+= sizeof(struct sadb_x_policy
);
3528 for (i
= 0, mp
= m
; i
< num_bundles
; i
++, mp
++) {
3529 /* old locator pair */
3530 size_pol
+= sizeof(struct sadb_x_ipsecrequest
) +
3531 pfkey_sockaddr_pair_size(mp
->old_family
);
3532 /* new locator pair */
3533 size_pol
+= sizeof(struct sadb_x_ipsecrequest
) +
3534 pfkey_sockaddr_pair_size(mp
->new_family
);
3537 size
+= sizeof(struct sadb_msg
) + size_pol
;
3540 skb
= alloc_skb(size
, GFP_ATOMIC
);
3544 hdr
= (struct sadb_msg
*)skb_put(skb
, sizeof(struct sadb_msg
));
3545 hdr
->sadb_msg_version
= PF_KEY_V2
;
3546 hdr
->sadb_msg_type
= SADB_X_MIGRATE
;
3547 hdr
->sadb_msg_satype
= pfkey_proto2satype(m
->proto
);
3548 hdr
->sadb_msg_len
= size
/ 8;
3549 hdr
->sadb_msg_errno
= 0;
3550 hdr
->sadb_msg_reserved
= 0;
3551 hdr
->sadb_msg_seq
= 0;
3552 hdr
->sadb_msg_pid
= 0;
3554 /* Addresses to be used by KM for negotiation, if ext is available */
3555 if (k
!= NULL
&& (set_sadb_kmaddress(skb
, k
) < 0))
3559 set_sadb_address(skb
, sasize_sel
, SADB_EXT_ADDRESS_SRC
, sel
);
3562 set_sadb_address(skb
, sasize_sel
, SADB_EXT_ADDRESS_DST
, sel
);
3564 /* policy information */
3565 pol
= (struct sadb_x_policy
*)skb_put(skb
, sizeof(struct sadb_x_policy
));
3566 pol
->sadb_x_policy_len
= size_pol
/ 8;
3567 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
3568 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
3569 pol
->sadb_x_policy_dir
= dir
+ 1;
3570 pol
->sadb_x_policy_reserved
= 0;
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)
3585 /* new ipsecrequest */
3586 if (set_ipsecrequest(skb
, mp
->proto
, mode
,
3587 (mp
->reqid
? IPSEC_LEVEL_UNIQUE
: IPSEC_LEVEL_REQUIRE
),
3588 mp
->reqid
, mp
->new_family
,
3589 &mp
->new_saddr
, &mp
->new_daddr
) < 0)
3593 /* broadcast migrate message to sockets */
3594 pfkey_broadcast(skb
, GFP_ATOMIC
, BROADCAST_ALL
, NULL
, &init_net
);
3603 static int pfkey_send_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
3604 const struct xfrm_migrate
*m
, int num_bundles
,
3605 const struct xfrm_kmaddress
*k
)
3607 return -ENOPROTOOPT
;
3611 static int pfkey_sendmsg(struct kiocb
*kiocb
,
3612 struct socket
*sock
, struct msghdr
*msg
, size_t len
)
3614 struct sock
*sk
= sock
->sk
;
3615 struct sk_buff
*skb
= NULL
;
3616 struct sadb_msg
*hdr
= NULL
;
3618 struct net
*net
= sock_net(sk
);
3621 if (msg
->msg_flags
& MSG_OOB
)
3625 if ((unsigned int)len
> sk
->sk_sndbuf
- 32)
3629 skb
= alloc_skb(len
, GFP_KERNEL
);
3634 if (memcpy_fromiovec(skb_put(skb
,len
), msg
->msg_iov
, len
))
3637 hdr
= pfkey_get_base_msg(skb
, &err
);
3641 mutex_lock(&net
->xfrm
.xfrm_cfg_mutex
);
3642 err
= pfkey_process(sk
, skb
, hdr
);
3643 mutex_unlock(&net
->xfrm
.xfrm_cfg_mutex
);
3646 if (err
&& hdr
&& pfkey_error(hdr
, err
, sk
) == 0)
3653 static int pfkey_recvmsg(struct kiocb
*kiocb
,
3654 struct socket
*sock
, struct msghdr
*msg
, size_t len
,
3657 struct sock
*sk
= sock
->sk
;
3658 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
3659 struct sk_buff
*skb
;
3663 if (flags
& ~(MSG_PEEK
|MSG_DONTWAIT
|MSG_TRUNC
|MSG_CMSG_COMPAT
))
3666 skb
= skb_recv_datagram(sk
, flags
, flags
& MSG_DONTWAIT
, &err
);
3672 msg
->msg_flags
|= MSG_TRUNC
;
3676 skb_reset_transport_header(skb
);
3677 err
= skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
3681 sock_recv_ts_and_drops(msg
, sk
, skb
);
3683 err
= (flags
& MSG_TRUNC
) ? skb
->len
: copied
;
3685 if (pfk
->dump
.dump
!= NULL
&&
3686 3 * atomic_read(&sk
->sk_rmem_alloc
) <= sk
->sk_rcvbuf
)
3690 skb_free_datagram(sk
, skb
);
3695 static const struct proto_ops pfkey_ops
= {
3697 .owner
= THIS_MODULE
,
3698 /* Operations that make no sense on pfkey sockets. */
3699 .bind
= sock_no_bind
,
3700 .connect
= sock_no_connect
,
3701 .socketpair
= sock_no_socketpair
,
3702 .accept
= sock_no_accept
,
3703 .getname
= sock_no_getname
,
3704 .ioctl
= sock_no_ioctl
,
3705 .listen
= sock_no_listen
,
3706 .shutdown
= sock_no_shutdown
,
3707 .setsockopt
= sock_no_setsockopt
,
3708 .getsockopt
= sock_no_getsockopt
,
3709 .mmap
= sock_no_mmap
,
3710 .sendpage
= sock_no_sendpage
,
3712 /* Now the operations that really occur. */
3713 .release
= pfkey_release
,
3714 .poll
= datagram_poll
,
3715 .sendmsg
= pfkey_sendmsg
,
3716 .recvmsg
= pfkey_recvmsg
,
3719 static const struct net_proto_family pfkey_family_ops
= {
3721 .create
= pfkey_create
,
3722 .owner
= THIS_MODULE
,
3725 #ifdef CONFIG_PROC_FS
3726 static int pfkey_seq_show(struct seq_file
*f
, void *v
)
3728 struct sock
*s
= sk_entry(v
);
3730 if (v
== SEQ_START_TOKEN
)
3731 seq_printf(f
,"sk RefCnt Rmem Wmem User Inode\n");
3733 seq_printf(f
, "%pK %-6d %-6u %-6u %-6u %-6lu\n",
3735 atomic_read(&s
->sk_refcnt
),
3736 sk_rmem_alloc_get(s
),
3737 sk_wmem_alloc_get(s
),
3738 from_kuid_munged(seq_user_ns(f
), sock_i_uid(s
)),
3744 static void *pfkey_seq_start(struct seq_file
*f
, loff_t
*ppos
)
3747 struct net
*net
= seq_file_net(f
);
3748 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
3751 return seq_hlist_start_head_rcu(&net_pfkey
->table
, *ppos
);
3754 static void *pfkey_seq_next(struct seq_file
*f
, void *v
, loff_t
*ppos
)
3756 struct net
*net
= seq_file_net(f
);
3757 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
3759 return seq_hlist_next_rcu(v
, &net_pfkey
->table
, ppos
);
3762 static void pfkey_seq_stop(struct seq_file
*f
, void *v
)
3768 static const struct seq_operations pfkey_seq_ops
= {
3769 .start
= pfkey_seq_start
,
3770 .next
= pfkey_seq_next
,
3771 .stop
= pfkey_seq_stop
,
3772 .show
= pfkey_seq_show
,
3775 static int pfkey_seq_open(struct inode
*inode
, struct file
*file
)
3777 return seq_open_net(inode
, file
, &pfkey_seq_ops
,
3778 sizeof(struct seq_net_private
));
3781 static const struct file_operations pfkey_proc_ops
= {
3782 .open
= pfkey_seq_open
,
3784 .llseek
= seq_lseek
,
3785 .release
= seq_release_net
,
3788 static int __net_init
pfkey_init_proc(struct net
*net
)
3790 struct proc_dir_entry
*e
;
3792 e
= proc_create("pfkey", 0, net
->proc_net
, &pfkey_proc_ops
);
3799 static void __net_exit
pfkey_exit_proc(struct net
*net
)
3801 remove_proc_entry("pfkey", net
->proc_net
);
3804 static inline int pfkey_init_proc(struct net
*net
)
3809 static inline void pfkey_exit_proc(struct net
*net
)
3814 static struct xfrm_mgr pfkeyv2_mgr
=
3817 .notify
= pfkey_send_notify
,
3818 .acquire
= pfkey_send_acquire
,
3819 .compile_policy
= pfkey_compile_policy
,
3820 .new_mapping
= pfkey_send_new_mapping
,
3821 .notify_policy
= pfkey_send_policy_notify
,
3822 .migrate
= pfkey_send_migrate
,
3823 .is_alive
= pfkey_is_alive
,
3826 static int __net_init
pfkey_net_init(struct net
*net
)
3828 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
3831 INIT_HLIST_HEAD(&net_pfkey
->table
);
3832 atomic_set(&net_pfkey
->socks_nr
, 0);
3834 rv
= pfkey_init_proc(net
);
3839 static void __net_exit
pfkey_net_exit(struct net
*net
)
3841 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
3843 pfkey_exit_proc(net
);
3844 BUG_ON(!hlist_empty(&net_pfkey
->table
));
3847 static struct pernet_operations pfkey_net_ops
= {
3848 .init
= pfkey_net_init
,
3849 .exit
= pfkey_net_exit
,
3850 .id
= &pfkey_net_id
,
3851 .size
= sizeof(struct netns_pfkey
),
3854 static void __exit
ipsec_pfkey_exit(void)
3856 xfrm_unregister_km(&pfkeyv2_mgr
);
3857 sock_unregister(PF_KEY
);
3858 unregister_pernet_subsys(&pfkey_net_ops
);
3859 proto_unregister(&key_proto
);
3862 static int __init
ipsec_pfkey_init(void)
3864 int err
= proto_register(&key_proto
, 0);
3869 err
= register_pernet_subsys(&pfkey_net_ops
);
3871 goto out_unregister_key_proto
;
3872 err
= sock_register(&pfkey_family_ops
);
3874 goto out_unregister_pernet
;
3875 err
= xfrm_register_km(&pfkeyv2_mgr
);
3877 goto out_sock_unregister
;
3881 out_sock_unregister
:
3882 sock_unregister(PF_KEY
);
3883 out_unregister_pernet
:
3884 unregister_pernet_subsys(&pfkey_net_ops
);
3885 out_unregister_key_proto
:
3886 proto_unregister(&key_proto
);
3890 module_init(ipsec_pfkey_init
);
3891 module_exit(ipsec_pfkey_exit
);
3892 MODULE_LICENSE("GPL");
3893 MODULE_ALIAS_NETPROTO(PF_KEY
);