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 unsigned 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
;
66 struct mutex dump_lock
;
69 static int parse_sockaddr_pair(struct sockaddr
*sa
, int ext_len
,
70 xfrm_address_t
*saddr
, xfrm_address_t
*daddr
,
73 static inline struct pfkey_sock
*pfkey_sk(struct sock
*sk
)
75 return (struct pfkey_sock
*)sk
;
78 static int pfkey_can_dump(const struct sock
*sk
)
80 if (3 * atomic_read(&sk
->sk_rmem_alloc
) <= 2 * sk
->sk_rcvbuf
)
85 static void pfkey_terminate_dump(struct pfkey_sock
*pfk
)
89 kfree_skb(pfk
->dump
.skb
);
93 pfk
->dump
.dump
= NULL
;
94 pfk
->dump
.done
= NULL
;
98 static void pfkey_sock_destruct(struct sock
*sk
)
100 struct net
*net
= sock_net(sk
);
101 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
103 pfkey_terminate_dump(pfkey_sk(sk
));
104 skb_queue_purge(&sk
->sk_receive_queue
);
106 if (!sock_flag(sk
, SOCK_DEAD
)) {
107 pr_err("Attempt to release alive pfkey socket: %p\n", sk
);
111 WARN_ON(atomic_read(&sk
->sk_rmem_alloc
));
112 WARN_ON(refcount_read(&sk
->sk_wmem_alloc
));
114 atomic_dec(&net_pfkey
->socks_nr
);
117 static const struct proto_ops pfkey_ops
;
119 static void pfkey_insert(struct sock
*sk
)
121 struct net
*net
= sock_net(sk
);
122 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
124 mutex_lock(&pfkey_mutex
);
125 sk_add_node_rcu(sk
, &net_pfkey
->table
);
126 mutex_unlock(&pfkey_mutex
);
129 static void pfkey_remove(struct sock
*sk
)
131 mutex_lock(&pfkey_mutex
);
132 sk_del_node_init_rcu(sk
);
133 mutex_unlock(&pfkey_mutex
);
136 static struct proto key_proto
= {
138 .owner
= THIS_MODULE
,
139 .obj_size
= sizeof(struct pfkey_sock
),
142 static int pfkey_create(struct net
*net
, struct socket
*sock
, int protocol
,
145 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
147 struct pfkey_sock
*pfk
;
150 if (!ns_capable(net
->user_ns
, CAP_NET_ADMIN
))
152 if (sock
->type
!= SOCK_RAW
)
153 return -ESOCKTNOSUPPORT
;
154 if (protocol
!= PF_KEY_V2
)
155 return -EPROTONOSUPPORT
;
158 sk
= sk_alloc(net
, PF_KEY
, GFP_KERNEL
, &key_proto
, kern
);
163 mutex_init(&pfk
->dump_lock
);
165 sock
->ops
= &pfkey_ops
;
166 sock_init_data(sock
, sk
);
168 sk
->sk_family
= PF_KEY
;
169 sk
->sk_destruct
= pfkey_sock_destruct
;
171 atomic_inc(&net_pfkey
->socks_nr
);
180 static int pfkey_release(struct socket
*sock
)
182 struct sock
*sk
= sock
->sk
;
191 skb_queue_purge(&sk
->sk_write_queue
);
199 static int pfkey_broadcast_one(struct sk_buff
*skb
, struct sk_buff
**skb2
,
200 gfp_t allocation
, struct sock
*sk
)
206 if (refcount_read(&skb
->users
) != 1) {
207 *skb2
= skb_clone(skb
, allocation
);
210 refcount_inc(&skb
->users
);
214 if (atomic_read(&sk
->sk_rmem_alloc
) <= sk
->sk_rcvbuf
) {
215 skb_set_owner_r(*skb2
, sk
);
216 skb_queue_tail(&sk
->sk_receive_queue
, *skb2
);
217 sk
->sk_data_ready(sk
);
226 /* Send SKB to all pfkey sockets matching selected criteria. */
227 #define BROADCAST_ALL 0
228 #define BROADCAST_ONE 1
229 #define BROADCAST_REGISTERED 2
230 #define BROADCAST_PROMISC_ONLY 4
231 static int pfkey_broadcast(struct sk_buff
*skb
,
232 int broadcast_flags
, struct sock
*one_sk
,
235 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
237 struct sk_buff
*skb2
= NULL
;
240 /* XXX Do we need something like netlink_overrun? I think
241 * XXX PF_KEY socket apps will not mind current behavior.
247 sk_for_each_rcu(sk
, &net_pfkey
->table
) {
248 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
251 /* Yes, it means that if you are meant to receive this
252 * pfkey message you receive it twice as promiscuous
256 pfkey_broadcast_one(skb
, &skb2
, GFP_ATOMIC
, sk
);
258 /* the exact target will be processed later */
261 if (broadcast_flags
!= BROADCAST_ALL
) {
262 if (broadcast_flags
& BROADCAST_PROMISC_ONLY
)
264 if ((broadcast_flags
& BROADCAST_REGISTERED
) &&
267 if (broadcast_flags
& BROADCAST_ONE
)
271 err2
= pfkey_broadcast_one(skb
, &skb2
, GFP_ATOMIC
, sk
);
273 /* Error is cleared after successful sending to at least one
275 if ((broadcast_flags
& BROADCAST_REGISTERED
) && err
)
281 err
= pfkey_broadcast_one(skb
, &skb2
, GFP_KERNEL
, one_sk
);
288 static int pfkey_do_dump(struct pfkey_sock
*pfk
)
290 struct sadb_msg
*hdr
;
293 mutex_lock(&pfk
->dump_lock
);
294 if (!pfk
->dump
.dump
) {
299 rc
= pfk
->dump
.dump(pfk
);
300 if (rc
== -ENOBUFS
) {
306 if (!pfkey_can_dump(&pfk
->sk
)) {
311 hdr
= (struct sadb_msg
*) pfk
->dump
.skb
->data
;
312 hdr
->sadb_msg_seq
= 0;
313 hdr
->sadb_msg_errno
= rc
;
314 pfkey_broadcast(pfk
->dump
.skb
, BROADCAST_ONE
,
315 &pfk
->sk
, sock_net(&pfk
->sk
));
316 pfk
->dump
.skb
= NULL
;
319 pfkey_terminate_dump(pfk
);
322 mutex_unlock(&pfk
->dump_lock
);
326 static inline void pfkey_hdr_dup(struct sadb_msg
*new,
327 const struct sadb_msg
*orig
)
332 static int pfkey_error(const struct sadb_msg
*orig
, int err
, struct sock
*sk
)
334 struct sk_buff
*skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_KERNEL
);
335 struct sadb_msg
*hdr
;
340 /* Woe be to the platform trying to support PFKEY yet
341 * having normal errnos outside the 1-255 range, inclusive.
344 if (err
== ERESTARTSYS
||
345 err
== ERESTARTNOHAND
||
346 err
== ERESTARTNOINTR
)
350 BUG_ON(err
<= 0 || err
>= 256);
352 hdr
= skb_put(skb
, sizeof(struct sadb_msg
));
353 pfkey_hdr_dup(hdr
, orig
);
354 hdr
->sadb_msg_errno
= (uint8_t) err
;
355 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) /
358 pfkey_broadcast(skb
, BROADCAST_ONE
, sk
, sock_net(sk
));
363 static const u8 sadb_ext_min_len
[] = {
364 [SADB_EXT_RESERVED
] = (u8
) 0,
365 [SADB_EXT_SA
] = (u8
) sizeof(struct sadb_sa
),
366 [SADB_EXT_LIFETIME_CURRENT
] = (u8
) sizeof(struct sadb_lifetime
),
367 [SADB_EXT_LIFETIME_HARD
] = (u8
) sizeof(struct sadb_lifetime
),
368 [SADB_EXT_LIFETIME_SOFT
] = (u8
) sizeof(struct sadb_lifetime
),
369 [SADB_EXT_ADDRESS_SRC
] = (u8
) sizeof(struct sadb_address
),
370 [SADB_EXT_ADDRESS_DST
] = (u8
) sizeof(struct sadb_address
),
371 [SADB_EXT_ADDRESS_PROXY
] = (u8
) sizeof(struct sadb_address
),
372 [SADB_EXT_KEY_AUTH
] = (u8
) sizeof(struct sadb_key
),
373 [SADB_EXT_KEY_ENCRYPT
] = (u8
) sizeof(struct sadb_key
),
374 [SADB_EXT_IDENTITY_SRC
] = (u8
) sizeof(struct sadb_ident
),
375 [SADB_EXT_IDENTITY_DST
] = (u8
) sizeof(struct sadb_ident
),
376 [SADB_EXT_SENSITIVITY
] = (u8
) sizeof(struct sadb_sens
),
377 [SADB_EXT_PROPOSAL
] = (u8
) sizeof(struct sadb_prop
),
378 [SADB_EXT_SUPPORTED_AUTH
] = (u8
) sizeof(struct sadb_supported
),
379 [SADB_EXT_SUPPORTED_ENCRYPT
] = (u8
) sizeof(struct sadb_supported
),
380 [SADB_EXT_SPIRANGE
] = (u8
) sizeof(struct sadb_spirange
),
381 [SADB_X_EXT_KMPRIVATE
] = (u8
) sizeof(struct sadb_x_kmprivate
),
382 [SADB_X_EXT_POLICY
] = (u8
) sizeof(struct sadb_x_policy
),
383 [SADB_X_EXT_SA2
] = (u8
) sizeof(struct sadb_x_sa2
),
384 [SADB_X_EXT_NAT_T_TYPE
] = (u8
) sizeof(struct sadb_x_nat_t_type
),
385 [SADB_X_EXT_NAT_T_SPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
386 [SADB_X_EXT_NAT_T_DPORT
] = (u8
) sizeof(struct sadb_x_nat_t_port
),
387 [SADB_X_EXT_NAT_T_OA
] = (u8
) sizeof(struct sadb_address
),
388 [SADB_X_EXT_SEC_CTX
] = (u8
) sizeof(struct sadb_x_sec_ctx
),
389 [SADB_X_EXT_KMADDRESS
] = (u8
) sizeof(struct sadb_x_kmaddress
),
390 [SADB_X_EXT_FILTER
] = (u8
) sizeof(struct sadb_x_filter
),
393 /* Verify sadb_address_{len,prefixlen} against sa_family. */
394 static int verify_address_len(const void *p
)
396 const struct sadb_address
*sp
= p
;
397 const struct sockaddr
*addr
= (const struct sockaddr
*)(sp
+ 1);
398 const struct sockaddr_in
*sin
;
399 #if IS_ENABLED(CONFIG_IPV6)
400 const struct sockaddr_in6
*sin6
;
404 switch (addr
->sa_family
) {
406 len
= DIV_ROUND_UP(sizeof(*sp
) + sizeof(*sin
), sizeof(uint64_t));
407 if (sp
->sadb_address_len
!= len
||
408 sp
->sadb_address_prefixlen
> 32)
411 #if IS_ENABLED(CONFIG_IPV6)
413 len
= DIV_ROUND_UP(sizeof(*sp
) + sizeof(*sin6
), sizeof(uint64_t));
414 if (sp
->sadb_address_len
!= len
||
415 sp
->sadb_address_prefixlen
> 128)
420 /* It is user using kernel to keep track of security
421 * associations for another protocol, such as
422 * OSPF/RSVP/RIPV2/MIP. It is user's job to verify
425 * XXX Actually, association/policy database is not yet
426 * XXX able to cope with arbitrary sockaddr families.
427 * XXX When it can, remove this -EINVAL. -DaveM
435 static inline int pfkey_sec_ctx_len(const struct sadb_x_sec_ctx
*sec_ctx
)
437 return DIV_ROUND_UP(sizeof(struct sadb_x_sec_ctx
) +
438 sec_ctx
->sadb_x_ctx_len
,
442 static inline int verify_sec_ctx_len(const void *p
)
444 const struct sadb_x_sec_ctx
*sec_ctx
= p
;
445 int len
= sec_ctx
->sadb_x_ctx_len
;
450 len
= pfkey_sec_ctx_len(sec_ctx
);
452 if (sec_ctx
->sadb_x_sec_len
!= len
)
458 static inline struct xfrm_user_sec_ctx
*pfkey_sadb2xfrm_user_sec_ctx(const struct sadb_x_sec_ctx
*sec_ctx
,
461 struct xfrm_user_sec_ctx
*uctx
= NULL
;
462 int ctx_size
= sec_ctx
->sadb_x_ctx_len
;
464 uctx
= kmalloc((sizeof(*uctx
)+ctx_size
), gfp
);
469 uctx
->len
= pfkey_sec_ctx_len(sec_ctx
);
470 uctx
->exttype
= sec_ctx
->sadb_x_sec_exttype
;
471 uctx
->ctx_doi
= sec_ctx
->sadb_x_ctx_doi
;
472 uctx
->ctx_alg
= sec_ctx
->sadb_x_ctx_alg
;
473 uctx
->ctx_len
= sec_ctx
->sadb_x_ctx_len
;
474 memcpy(uctx
+ 1, sec_ctx
+ 1,
480 static int present_and_same_family(const struct sadb_address
*src
,
481 const struct sadb_address
*dst
)
483 const struct sockaddr
*s_addr
, *d_addr
;
488 s_addr
= (const struct sockaddr
*)(src
+ 1);
489 d_addr
= (const struct sockaddr
*)(dst
+ 1);
490 if (s_addr
->sa_family
!= d_addr
->sa_family
)
492 if (s_addr
->sa_family
!= AF_INET
493 #if IS_ENABLED(CONFIG_IPV6)
494 && s_addr
->sa_family
!= AF_INET6
502 static int parse_exthdrs(struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void **ext_hdrs
)
504 const char *p
= (char *) hdr
;
510 const struct sadb_ext
*ehdr
= (const struct sadb_ext
*) p
;
514 ext_len
= ehdr
->sadb_ext_len
;
515 ext_len
*= sizeof(uint64_t);
516 ext_type
= ehdr
->sadb_ext_type
;
517 if (ext_len
< sizeof(uint64_t) ||
519 ext_type
== SADB_EXT_RESERVED
)
522 if (ext_type
<= SADB_EXT_MAX
) {
523 int min
= (int) sadb_ext_min_len
[ext_type
];
526 if (ext_hdrs
[ext_type
-1] != NULL
)
528 if (ext_type
== SADB_EXT_ADDRESS_SRC
||
529 ext_type
== SADB_EXT_ADDRESS_DST
||
530 ext_type
== SADB_EXT_ADDRESS_PROXY
||
531 ext_type
== SADB_X_EXT_NAT_T_OA
) {
532 if (verify_address_len(p
))
535 if (ext_type
== SADB_X_EXT_SEC_CTX
) {
536 if (verify_sec_ctx_len(p
))
539 ext_hdrs
[ext_type
-1] = (void *) p
;
549 pfkey_satype2proto(uint8_t satype
)
552 case SADB_SATYPE_UNSPEC
:
553 return IPSEC_PROTO_ANY
;
556 case SADB_SATYPE_ESP
:
558 case SADB_X_SATYPE_IPCOMP
:
567 pfkey_proto2satype(uint16_t proto
)
571 return SADB_SATYPE_AH
;
573 return SADB_SATYPE_ESP
;
575 return SADB_X_SATYPE_IPCOMP
;
582 /* BTW, this scheme means that there is no way with PFKEY2 sockets to
583 * say specifically 'just raw sockets' as we encode them as 255.
586 static uint8_t pfkey_proto_to_xfrm(uint8_t proto
)
588 return proto
== IPSEC_PROTO_ANY
? 0 : proto
;
591 static uint8_t pfkey_proto_from_xfrm(uint8_t proto
)
593 return proto
? proto
: IPSEC_PROTO_ANY
;
596 static inline int pfkey_sockaddr_len(sa_family_t family
)
600 return sizeof(struct sockaddr_in
);
601 #if IS_ENABLED(CONFIG_IPV6)
603 return sizeof(struct sockaddr_in6
);
610 int pfkey_sockaddr_extract(const struct sockaddr
*sa
, xfrm_address_t
*xaddr
)
612 switch (sa
->sa_family
) {
615 ((struct sockaddr_in
*)sa
)->sin_addr
.s_addr
;
617 #if IS_ENABLED(CONFIG_IPV6)
620 &((struct sockaddr_in6
*)sa
)->sin6_addr
,
621 sizeof(struct in6_addr
));
629 int pfkey_sadb_addr2xfrm_addr(const struct sadb_address
*addr
, xfrm_address_t
*xaddr
)
631 return pfkey_sockaddr_extract((struct sockaddr
*)(addr
+ 1),
635 static struct xfrm_state
*pfkey_xfrm_state_lookup(struct net
*net
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
637 const struct sadb_sa
*sa
;
638 const struct sadb_address
*addr
;
640 unsigned short family
;
641 xfrm_address_t
*xaddr
;
643 sa
= ext_hdrs
[SADB_EXT_SA
- 1];
647 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
651 /* sadb_address_len should be checked by caller */
652 addr
= ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1];
656 family
= ((const struct sockaddr
*)(addr
+ 1))->sa_family
;
659 xaddr
= (xfrm_address_t
*)&((const struct sockaddr_in
*)(addr
+ 1))->sin_addr
;
661 #if IS_ENABLED(CONFIG_IPV6)
663 xaddr
= (xfrm_address_t
*)&((const struct sockaddr_in6
*)(addr
+ 1))->sin6_addr
;
673 return xfrm_state_lookup(net
, DUMMY_MARK
, xaddr
, sa
->sadb_sa_spi
, proto
, family
);
676 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
679 pfkey_sockaddr_size(sa_family_t family
)
681 return PFKEY_ALIGN8(pfkey_sockaddr_len(family
));
684 static inline int pfkey_mode_from_xfrm(int mode
)
687 case XFRM_MODE_TRANSPORT
:
688 return IPSEC_MODE_TRANSPORT
;
689 case XFRM_MODE_TUNNEL
:
690 return IPSEC_MODE_TUNNEL
;
692 return IPSEC_MODE_BEET
;
698 static inline int pfkey_mode_to_xfrm(int mode
)
701 case IPSEC_MODE_ANY
: /*XXX*/
702 case IPSEC_MODE_TRANSPORT
:
703 return XFRM_MODE_TRANSPORT
;
704 case IPSEC_MODE_TUNNEL
:
705 return XFRM_MODE_TUNNEL
;
706 case IPSEC_MODE_BEET
:
707 return XFRM_MODE_BEET
;
713 static unsigned int pfkey_sockaddr_fill(const xfrm_address_t
*xaddr
, __be16 port
,
715 unsigned short family
)
720 struct sockaddr_in
*sin
= (struct sockaddr_in
*)sa
;
721 sin
->sin_family
= AF_INET
;
722 sin
->sin_port
= port
;
723 sin
->sin_addr
.s_addr
= xaddr
->a4
;
724 memset(sin
->sin_zero
, 0, sizeof(sin
->sin_zero
));
727 #if IS_ENABLED(CONFIG_IPV6)
730 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*)sa
;
731 sin6
->sin6_family
= AF_INET6
;
732 sin6
->sin6_port
= port
;
733 sin6
->sin6_flowinfo
= 0;
734 sin6
->sin6_addr
= xaddr
->in6
;
735 sin6
->sin6_scope_id
= 0;
743 static struct sk_buff
*__pfkey_xfrm_state2msg(const struct xfrm_state
*x
,
744 int add_keys
, int hsc
)
747 struct sadb_msg
*hdr
;
749 struct sadb_lifetime
*lifetime
;
750 struct sadb_address
*addr
;
751 struct sadb_key
*key
;
752 struct sadb_x_sa2
*sa2
;
753 struct sadb_x_sec_ctx
*sec_ctx
;
754 struct xfrm_sec_ctx
*xfrm_ctx
;
757 int auth_key_size
= 0;
758 int encrypt_key_size
= 0;
760 struct xfrm_encap_tmpl
*natt
= NULL
;
763 /* address family check */
764 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
766 return ERR_PTR(-EINVAL
);
768 /* base, SA, (lifetime (HSC),) address(SD), (address(P),)
769 key(AE), (identity(SD),) (sensitivity)> */
770 size
= sizeof(struct sadb_msg
) +sizeof(struct sadb_sa
) +
771 sizeof(struct sadb_lifetime
) +
772 ((hsc
& 1) ? sizeof(struct sadb_lifetime
) : 0) +
773 ((hsc
& 2) ? sizeof(struct sadb_lifetime
) : 0) +
774 sizeof(struct sadb_address
)*2 +
776 sizeof(struct sadb_x_sa2
);
778 if ((xfrm_ctx
= x
->security
)) {
779 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
780 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
783 /* identity & sensitivity */
784 if (!xfrm_addr_equal(&x
->sel
.saddr
, &x
->props
.saddr
, x
->props
.family
))
785 size
+= sizeof(struct sadb_address
) + sockaddr_size
;
788 if (x
->aalg
&& x
->aalg
->alg_key_len
) {
790 PFKEY_ALIGN8((x
->aalg
->alg_key_len
+ 7) / 8);
791 size
+= sizeof(struct sadb_key
) + auth_key_size
;
793 if (x
->ealg
&& x
->ealg
->alg_key_len
) {
795 PFKEY_ALIGN8((x
->ealg
->alg_key_len
+7) / 8);
796 size
+= sizeof(struct sadb_key
) + encrypt_key_size
;
802 if (natt
&& natt
->encap_type
) {
803 size
+= sizeof(struct sadb_x_nat_t_type
);
804 size
+= sizeof(struct sadb_x_nat_t_port
);
805 size
+= sizeof(struct sadb_x_nat_t_port
);
808 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
810 return ERR_PTR(-ENOBUFS
);
812 /* call should fill header later */
813 hdr
= skb_put(skb
, sizeof(struct sadb_msg
));
814 memset(hdr
, 0, size
); /* XXX do we need this ? */
815 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
818 sa
= skb_put(skb
, sizeof(struct sadb_sa
));
819 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
820 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
821 sa
->sadb_sa_spi
= x
->id
.spi
;
822 sa
->sadb_sa_replay
= x
->props
.replay_window
;
823 switch (x
->km
.state
) {
824 case XFRM_STATE_VALID
:
825 sa
->sadb_sa_state
= x
->km
.dying
?
826 SADB_SASTATE_DYING
: SADB_SASTATE_MATURE
;
829 sa
->sadb_sa_state
= SADB_SASTATE_LARVAL
;
832 sa
->sadb_sa_state
= SADB_SASTATE_DEAD
;
835 sa
->sadb_sa_auth
= 0;
837 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byname(x
->aalg
->alg_name
, 0);
838 sa
->sadb_sa_auth
= (a
&& a
->pfkey_supported
) ?
839 a
->desc
.sadb_alg_id
: 0;
841 sa
->sadb_sa_encrypt
= 0;
842 BUG_ON(x
->ealg
&& x
->calg
);
844 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byname(x
->ealg
->alg_name
, 0);
845 sa
->sadb_sa_encrypt
= (a
&& a
->pfkey_supported
) ?
846 a
->desc
.sadb_alg_id
: 0;
848 /* KAME compatible: sadb_sa_encrypt is overloaded with calg id */
850 struct xfrm_algo_desc
*a
= xfrm_calg_get_byname(x
->calg
->alg_name
, 0);
851 sa
->sadb_sa_encrypt
= (a
&& a
->pfkey_supported
) ?
852 a
->desc
.sadb_alg_id
: 0;
855 sa
->sadb_sa_flags
= 0;
856 if (x
->props
.flags
& XFRM_STATE_NOECN
)
857 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOECN
;
858 if (x
->props
.flags
& XFRM_STATE_DECAP_DSCP
)
859 sa
->sadb_sa_flags
|= SADB_SAFLAGS_DECAP_DSCP
;
860 if (x
->props
.flags
& XFRM_STATE_NOPMTUDISC
)
861 sa
->sadb_sa_flags
|= SADB_SAFLAGS_NOPMTUDISC
;
865 lifetime
= skb_put(skb
, sizeof(struct sadb_lifetime
));
866 lifetime
->sadb_lifetime_len
=
867 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
868 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
869 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.hard_packet_limit
);
870 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.hard_byte_limit
);
871 lifetime
->sadb_lifetime_addtime
= x
->lft
.hard_add_expires_seconds
;
872 lifetime
->sadb_lifetime_usetime
= x
->lft
.hard_use_expires_seconds
;
876 lifetime
= skb_put(skb
, sizeof(struct sadb_lifetime
));
877 lifetime
->sadb_lifetime_len
=
878 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
879 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
880 lifetime
->sadb_lifetime_allocations
= _X2KEY(x
->lft
.soft_packet_limit
);
881 lifetime
->sadb_lifetime_bytes
= _X2KEY(x
->lft
.soft_byte_limit
);
882 lifetime
->sadb_lifetime_addtime
= x
->lft
.soft_add_expires_seconds
;
883 lifetime
->sadb_lifetime_usetime
= x
->lft
.soft_use_expires_seconds
;
886 lifetime
= skb_put(skb
, sizeof(struct sadb_lifetime
));
887 lifetime
->sadb_lifetime_len
=
888 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
889 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
890 lifetime
->sadb_lifetime_allocations
= x
->curlft
.packets
;
891 lifetime
->sadb_lifetime_bytes
= x
->curlft
.bytes
;
892 lifetime
->sadb_lifetime_addtime
= x
->curlft
.add_time
;
893 lifetime
->sadb_lifetime_usetime
= x
->curlft
.use_time
;
895 addr
= skb_put(skb
, sizeof(struct sadb_address
) + sockaddr_size
);
896 addr
->sadb_address_len
=
897 (sizeof(struct sadb_address
)+sockaddr_size
)/
899 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
900 /* "if the ports are non-zero, then the sadb_address_proto field,
901 normally zero, MUST be filled in with the transport
902 protocol's number." - RFC2367 */
903 addr
->sadb_address_proto
= 0;
904 addr
->sadb_address_reserved
= 0;
906 addr
->sadb_address_prefixlen
=
907 pfkey_sockaddr_fill(&x
->props
.saddr
, 0,
908 (struct sockaddr
*) (addr
+ 1),
910 if (!addr
->sadb_address_prefixlen
)
914 addr
= skb_put(skb
, sizeof(struct sadb_address
) + sockaddr_size
);
915 addr
->sadb_address_len
=
916 (sizeof(struct sadb_address
)+sockaddr_size
)/
918 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
919 addr
->sadb_address_proto
= 0;
920 addr
->sadb_address_reserved
= 0;
922 addr
->sadb_address_prefixlen
=
923 pfkey_sockaddr_fill(&x
->id
.daddr
, 0,
924 (struct sockaddr
*) (addr
+ 1),
926 if (!addr
->sadb_address_prefixlen
)
929 if (!xfrm_addr_equal(&x
->sel
.saddr
, &x
->props
.saddr
,
932 sizeof(struct sadb_address
) + sockaddr_size
);
933 addr
->sadb_address_len
=
934 (sizeof(struct sadb_address
)+sockaddr_size
)/
936 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_PROXY
;
937 addr
->sadb_address_proto
=
938 pfkey_proto_from_xfrm(x
->sel
.proto
);
939 addr
->sadb_address_prefixlen
= x
->sel
.prefixlen_s
;
940 addr
->sadb_address_reserved
= 0;
942 pfkey_sockaddr_fill(&x
->sel
.saddr
, x
->sel
.sport
,
943 (struct sockaddr
*) (addr
+ 1),
948 if (add_keys
&& auth_key_size
) {
949 key
= skb_put(skb
, sizeof(struct sadb_key
) + auth_key_size
);
950 key
->sadb_key_len
= (sizeof(struct sadb_key
) + auth_key_size
) /
952 key
->sadb_key_exttype
= SADB_EXT_KEY_AUTH
;
953 key
->sadb_key_bits
= x
->aalg
->alg_key_len
;
954 key
->sadb_key_reserved
= 0;
955 memcpy(key
+ 1, x
->aalg
->alg_key
, (x
->aalg
->alg_key_len
+7)/8);
958 if (add_keys
&& encrypt_key_size
) {
959 key
= skb_put(skb
, sizeof(struct sadb_key
) + encrypt_key_size
);
960 key
->sadb_key_len
= (sizeof(struct sadb_key
) +
961 encrypt_key_size
) / sizeof(uint64_t);
962 key
->sadb_key_exttype
= SADB_EXT_KEY_ENCRYPT
;
963 key
->sadb_key_bits
= x
->ealg
->alg_key_len
;
964 key
->sadb_key_reserved
= 0;
965 memcpy(key
+ 1, x
->ealg
->alg_key
,
966 (x
->ealg
->alg_key_len
+7)/8);
970 sa2
= skb_put(skb
, sizeof(struct sadb_x_sa2
));
971 sa2
->sadb_x_sa2_len
= sizeof(struct sadb_x_sa2
)/sizeof(uint64_t);
972 sa2
->sadb_x_sa2_exttype
= SADB_X_EXT_SA2
;
973 if ((mode
= pfkey_mode_from_xfrm(x
->props
.mode
)) < 0) {
975 return ERR_PTR(-EINVAL
);
977 sa2
->sadb_x_sa2_mode
= mode
;
978 sa2
->sadb_x_sa2_reserved1
= 0;
979 sa2
->sadb_x_sa2_reserved2
= 0;
980 sa2
->sadb_x_sa2_sequence
= 0;
981 sa2
->sadb_x_sa2_reqid
= x
->props
.reqid
;
983 if (natt
&& natt
->encap_type
) {
984 struct sadb_x_nat_t_type
*n_type
;
985 struct sadb_x_nat_t_port
*n_port
;
988 n_type
= skb_put(skb
, sizeof(*n_type
));
989 n_type
->sadb_x_nat_t_type_len
= sizeof(*n_type
)/sizeof(uint64_t);
990 n_type
->sadb_x_nat_t_type_exttype
= SADB_X_EXT_NAT_T_TYPE
;
991 n_type
->sadb_x_nat_t_type_type
= natt
->encap_type
;
992 n_type
->sadb_x_nat_t_type_reserved
[0] = 0;
993 n_type
->sadb_x_nat_t_type_reserved
[1] = 0;
994 n_type
->sadb_x_nat_t_type_reserved
[2] = 0;
997 n_port
= skb_put(skb
, sizeof(*n_port
));
998 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
999 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
1000 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
1001 n_port
->sadb_x_nat_t_port_reserved
= 0;
1004 n_port
= skb_put(skb
, sizeof(*n_port
));
1005 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
1006 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
1007 n_port
->sadb_x_nat_t_port_port
= natt
->encap_dport
;
1008 n_port
->sadb_x_nat_t_port_reserved
= 0;
1011 /* security context */
1013 sec_ctx
= skb_put(skb
,
1014 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
1015 sec_ctx
->sadb_x_sec_len
=
1016 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
1017 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
1018 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
1019 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
1020 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
1021 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
1029 static inline struct sk_buff
*pfkey_xfrm_state2msg(const struct xfrm_state
*x
)
1031 struct sk_buff
*skb
;
1033 skb
= __pfkey_xfrm_state2msg(x
, 1, 3);
1038 static inline struct sk_buff
*pfkey_xfrm_state2msg_expire(const struct xfrm_state
*x
,
1041 return __pfkey_xfrm_state2msg(x
, 0, hsc
);
1044 static struct xfrm_state
* pfkey_msg2xfrm_state(struct net
*net
,
1045 const struct sadb_msg
*hdr
,
1046 void * const *ext_hdrs
)
1048 struct xfrm_state
*x
;
1049 const struct sadb_lifetime
*lifetime
;
1050 const struct sadb_sa
*sa
;
1051 const struct sadb_key
*key
;
1052 const struct sadb_x_sec_ctx
*sec_ctx
;
1057 sa
= ext_hdrs
[SADB_EXT_SA
- 1];
1059 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1060 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1061 return ERR_PTR(-EINVAL
);
1062 if (hdr
->sadb_msg_satype
== SADB_SATYPE_ESP
&&
1063 !ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1])
1064 return ERR_PTR(-EINVAL
);
1065 if (hdr
->sadb_msg_satype
== SADB_SATYPE_AH
&&
1066 !ext_hdrs
[SADB_EXT_KEY_AUTH
-1])
1067 return ERR_PTR(-EINVAL
);
1068 if (!!ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1] !=
1069 !!ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1])
1070 return ERR_PTR(-EINVAL
);
1072 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1074 return ERR_PTR(-EINVAL
);
1076 /* default error is no buffer space */
1081 Only SADB_SASTATE_MATURE SAs may be submitted in an SADB_ADD message.
1082 SADB_SASTATE_LARVAL SAs are created by SADB_GETSPI and it is not
1083 sensible to add a new SA in the DYING or SADB_SASTATE_DEAD state.
1084 Therefore, the sadb_sa_state field of all submitted SAs MUST be
1085 SADB_SASTATE_MATURE and the kernel MUST return an error if this is
1088 However, KAME setkey always uses SADB_SASTATE_LARVAL.
1089 Hence, we have to _ignore_ sadb_sa_state, which is also reasonable.
1091 if (sa
->sadb_sa_auth
> SADB_AALG_MAX
||
1092 (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
&&
1093 sa
->sadb_sa_encrypt
> SADB_X_CALG_MAX
) ||
1094 sa
->sadb_sa_encrypt
> SADB_EALG_MAX
)
1095 return ERR_PTR(-EINVAL
);
1096 key
= ext_hdrs
[SADB_EXT_KEY_AUTH
- 1];
1098 sa
->sadb_sa_auth
!= SADB_X_AALG_NULL
&&
1099 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1100 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1101 return ERR_PTR(-EINVAL
);
1102 key
= ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1104 sa
->sadb_sa_encrypt
!= SADB_EALG_NULL
&&
1105 ((key
->sadb_key_bits
+7) / 8 == 0 ||
1106 (key
->sadb_key_bits
+7) / 8 > key
->sadb_key_len
* sizeof(uint64_t)))
1107 return ERR_PTR(-EINVAL
);
1109 x
= xfrm_state_alloc(net
);
1111 return ERR_PTR(-ENOBUFS
);
1113 x
->id
.proto
= proto
;
1114 x
->id
.spi
= sa
->sadb_sa_spi
;
1115 x
->props
.replay_window
= min_t(unsigned int, sa
->sadb_sa_replay
,
1116 (sizeof(x
->replay
.bitmap
) * 8));
1117 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOECN
)
1118 x
->props
.flags
|= XFRM_STATE_NOECN
;
1119 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_DECAP_DSCP
)
1120 x
->props
.flags
|= XFRM_STATE_DECAP_DSCP
;
1121 if (sa
->sadb_sa_flags
& SADB_SAFLAGS_NOPMTUDISC
)
1122 x
->props
.flags
|= XFRM_STATE_NOPMTUDISC
;
1124 lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_HARD
- 1];
1125 if (lifetime
!= NULL
) {
1126 x
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1127 x
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1128 x
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1129 x
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1131 lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_SOFT
- 1];
1132 if (lifetime
!= NULL
) {
1133 x
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
1134 x
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
1135 x
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
1136 x
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
1139 sec_ctx
= ext_hdrs
[SADB_X_EXT_SEC_CTX
- 1];
1140 if (sec_ctx
!= NULL
) {
1141 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
, GFP_KERNEL
);
1146 err
= security_xfrm_state_alloc(x
, uctx
);
1154 key
= ext_hdrs
[SADB_EXT_KEY_AUTH
- 1];
1155 if (sa
->sadb_sa_auth
) {
1157 struct xfrm_algo_desc
*a
= xfrm_aalg_get_byid(sa
->sadb_sa_auth
);
1158 if (!a
|| !a
->pfkey_supported
) {
1163 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1164 x
->aalg
= kmalloc(sizeof(*x
->aalg
) + keysize
, GFP_KERNEL
);
1169 strcpy(x
->aalg
->alg_name
, a
->name
);
1170 x
->aalg
->alg_key_len
= 0;
1172 x
->aalg
->alg_key_len
= key
->sadb_key_bits
;
1173 memcpy(x
->aalg
->alg_key
, key
+1, keysize
);
1175 x
->aalg
->alg_trunc_len
= a
->uinfo
.auth
.icv_truncbits
;
1176 x
->props
.aalgo
= sa
->sadb_sa_auth
;
1177 /* x->algo.flags = sa->sadb_sa_flags; */
1179 if (sa
->sadb_sa_encrypt
) {
1180 if (hdr
->sadb_msg_satype
== SADB_X_SATYPE_IPCOMP
) {
1181 struct xfrm_algo_desc
*a
= xfrm_calg_get_byid(sa
->sadb_sa_encrypt
);
1182 if (!a
|| !a
->pfkey_supported
) {
1186 x
->calg
= kmalloc(sizeof(*x
->calg
), GFP_KERNEL
);
1191 strcpy(x
->calg
->alg_name
, a
->name
);
1192 x
->props
.calgo
= sa
->sadb_sa_encrypt
;
1195 struct xfrm_algo_desc
*a
= xfrm_ealg_get_byid(sa
->sadb_sa_encrypt
);
1196 if (!a
|| !a
->pfkey_supported
) {
1200 key
= (struct sadb_key
*) ext_hdrs
[SADB_EXT_KEY_ENCRYPT
-1];
1202 keysize
= (key
->sadb_key_bits
+ 7) / 8;
1203 x
->ealg
= kmalloc(sizeof(*x
->ealg
) + keysize
, GFP_KERNEL
);
1208 strcpy(x
->ealg
->alg_name
, a
->name
);
1209 x
->ealg
->alg_key_len
= 0;
1211 x
->ealg
->alg_key_len
= key
->sadb_key_bits
;
1212 memcpy(x
->ealg
->alg_key
, key
+1, keysize
);
1214 x
->props
.ealgo
= sa
->sadb_sa_encrypt
;
1215 x
->geniv
= a
->uinfo
.encr
.geniv
;
1218 /* x->algo.flags = sa->sadb_sa_flags; */
1220 x
->props
.family
= pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1222 pfkey_sadb_addr2xfrm_addr((struct sadb_address
*) ext_hdrs
[SADB_EXT_ADDRESS_DST
-1],
1225 if (ext_hdrs
[SADB_X_EXT_SA2
-1]) {
1226 const struct sadb_x_sa2
*sa2
= ext_hdrs
[SADB_X_EXT_SA2
-1];
1227 int mode
= pfkey_mode_to_xfrm(sa2
->sadb_x_sa2_mode
);
1232 x
->props
.mode
= mode
;
1233 x
->props
.reqid
= sa2
->sadb_x_sa2_reqid
;
1236 if (ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1]) {
1237 const struct sadb_address
*addr
= ext_hdrs
[SADB_EXT_ADDRESS_PROXY
-1];
1239 /* Nobody uses this, but we try. */
1240 x
->sel
.family
= pfkey_sadb_addr2xfrm_addr(addr
, &x
->sel
.saddr
);
1241 x
->sel
.prefixlen_s
= addr
->sadb_address_prefixlen
;
1245 x
->sel
.family
= x
->props
.family
;
1247 if (ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1]) {
1248 const struct sadb_x_nat_t_type
* n_type
;
1249 struct xfrm_encap_tmpl
*natt
;
1251 x
->encap
= kmalloc(sizeof(*x
->encap
), GFP_KERNEL
);
1258 n_type
= ext_hdrs
[SADB_X_EXT_NAT_T_TYPE
-1];
1259 natt
->encap_type
= n_type
->sadb_x_nat_t_type_type
;
1261 if (ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1]) {
1262 const struct sadb_x_nat_t_port
*n_port
=
1263 ext_hdrs
[SADB_X_EXT_NAT_T_SPORT
-1];
1264 natt
->encap_sport
= n_port
->sadb_x_nat_t_port_port
;
1266 if (ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1]) {
1267 const struct sadb_x_nat_t_port
*n_port
=
1268 ext_hdrs
[SADB_X_EXT_NAT_T_DPORT
-1];
1269 natt
->encap_dport
= n_port
->sadb_x_nat_t_port_port
;
1271 memset(&natt
->encap_oa
, 0, sizeof(natt
->encap_oa
));
1274 err
= xfrm_init_state(x
);
1278 x
->km
.seq
= hdr
->sadb_msg_seq
;
1282 x
->km
.state
= XFRM_STATE_DEAD
;
1284 return ERR_PTR(err
);
1287 static int pfkey_reserved(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1292 static int pfkey_getspi(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1294 struct net
*net
= sock_net(sk
);
1295 struct sk_buff
*resp_skb
;
1296 struct sadb_x_sa2
*sa2
;
1297 struct sadb_address
*saddr
, *daddr
;
1298 struct sadb_msg
*out_hdr
;
1299 struct sadb_spirange
*range
;
1300 struct xfrm_state
*x
= NULL
;
1303 u32 min_spi
, max_spi
;
1306 unsigned short family
;
1307 xfrm_address_t
*xsaddr
= NULL
, *xdaddr
= NULL
;
1309 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1310 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1313 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1317 if ((sa2
= ext_hdrs
[SADB_X_EXT_SA2
-1]) != NULL
) {
1318 mode
= pfkey_mode_to_xfrm(sa2
->sadb_x_sa2_mode
);
1321 reqid
= sa2
->sadb_x_sa2_reqid
;
1327 saddr
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1];
1328 daddr
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
1330 family
= ((struct sockaddr
*)(saddr
+ 1))->sa_family
;
1333 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(daddr
+ 1))->sin_addr
.s_addr
;
1334 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in
*)(saddr
+ 1))->sin_addr
.s_addr
;
1336 #if IS_ENABLED(CONFIG_IPV6)
1338 xdaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(daddr
+ 1))->sin6_addr
;
1339 xsaddr
= (xfrm_address_t
*)&((struct sockaddr_in6
*)(saddr
+ 1))->sin6_addr
;
1344 if (hdr
->sadb_msg_seq
) {
1345 x
= xfrm_find_acq_byseq(net
, DUMMY_MARK
, hdr
->sadb_msg_seq
);
1346 if (x
&& !xfrm_addr_equal(&x
->id
.daddr
, xdaddr
, family
)) {
1353 x
= xfrm_find_acq(net
, &dummy_mark
, mode
, reqid
, proto
, xdaddr
, xsaddr
, 1, family
);
1359 max_spi
= 0x0fffffff;
1361 range
= ext_hdrs
[SADB_EXT_SPIRANGE
-1];
1363 min_spi
= range
->sadb_spirange_min
;
1364 max_spi
= range
->sadb_spirange_max
;
1367 err
= verify_spi_info(x
->id
.proto
, min_spi
, max_spi
);
1373 err
= xfrm_alloc_spi(x
, min_spi
, max_spi
);
1374 resp_skb
= err
? ERR_PTR(err
) : pfkey_xfrm_state2msg(x
);
1376 if (IS_ERR(resp_skb
)) {
1378 return PTR_ERR(resp_skb
);
1381 out_hdr
= (struct sadb_msg
*) resp_skb
->data
;
1382 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1383 out_hdr
->sadb_msg_type
= SADB_GETSPI
;
1384 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1385 out_hdr
->sadb_msg_errno
= 0;
1386 out_hdr
->sadb_msg_reserved
= 0;
1387 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1388 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1392 pfkey_broadcast(resp_skb
, BROADCAST_ONE
, sk
, net
);
1397 static int pfkey_acquire(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1399 struct net
*net
= sock_net(sk
);
1400 struct xfrm_state
*x
;
1402 if (hdr
->sadb_msg_len
!= sizeof(struct sadb_msg
)/8)
1405 if (hdr
->sadb_msg_seq
== 0 || hdr
->sadb_msg_errno
== 0)
1408 x
= xfrm_find_acq_byseq(net
, DUMMY_MARK
, hdr
->sadb_msg_seq
);
1412 spin_lock_bh(&x
->lock
);
1413 if (x
->km
.state
== XFRM_STATE_ACQ
)
1414 x
->km
.state
= XFRM_STATE_ERROR
;
1416 spin_unlock_bh(&x
->lock
);
1421 static inline int event2poltype(int event
)
1424 case XFRM_MSG_DELPOLICY
:
1425 return SADB_X_SPDDELETE
;
1426 case XFRM_MSG_NEWPOLICY
:
1427 return SADB_X_SPDADD
;
1428 case XFRM_MSG_UPDPOLICY
:
1429 return SADB_X_SPDUPDATE
;
1430 case XFRM_MSG_POLEXPIRE
:
1431 // return SADB_X_SPDEXPIRE;
1433 pr_err("pfkey: Unknown policy event %d\n", event
);
1440 static inline int event2keytype(int event
)
1443 case XFRM_MSG_DELSA
:
1445 case XFRM_MSG_NEWSA
:
1447 case XFRM_MSG_UPDSA
:
1449 case XFRM_MSG_EXPIRE
:
1452 pr_err("pfkey: Unknown SA event %d\n", event
);
1460 static int key_notify_sa(struct xfrm_state
*x
, const struct km_event
*c
)
1462 struct sk_buff
*skb
;
1463 struct sadb_msg
*hdr
;
1465 skb
= pfkey_xfrm_state2msg(x
);
1468 return PTR_ERR(skb
);
1470 hdr
= (struct sadb_msg
*) skb
->data
;
1471 hdr
->sadb_msg_version
= PF_KEY_V2
;
1472 hdr
->sadb_msg_type
= event2keytype(c
->event
);
1473 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1474 hdr
->sadb_msg_errno
= 0;
1475 hdr
->sadb_msg_reserved
= 0;
1476 hdr
->sadb_msg_seq
= c
->seq
;
1477 hdr
->sadb_msg_pid
= c
->portid
;
1479 pfkey_broadcast(skb
, BROADCAST_ALL
, NULL
, xs_net(x
));
1484 static int pfkey_add(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1486 struct net
*net
= sock_net(sk
);
1487 struct xfrm_state
*x
;
1491 x
= pfkey_msg2xfrm_state(net
, hdr
, ext_hdrs
);
1496 if (hdr
->sadb_msg_type
== SADB_ADD
)
1497 err
= xfrm_state_add(x
);
1499 err
= xfrm_state_update(x
);
1501 xfrm_audit_state_add(x
, err
? 0 : 1, true);
1504 x
->km
.state
= XFRM_STATE_DEAD
;
1505 __xfrm_state_put(x
);
1509 if (hdr
->sadb_msg_type
== SADB_ADD
)
1510 c
.event
= XFRM_MSG_NEWSA
;
1512 c
.event
= XFRM_MSG_UPDSA
;
1513 c
.seq
= hdr
->sadb_msg_seq
;
1514 c
.portid
= hdr
->sadb_msg_pid
;
1515 km_state_notify(x
, &c
);
1521 static int pfkey_delete(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1523 struct net
*net
= sock_net(sk
);
1524 struct xfrm_state
*x
;
1528 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1529 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1530 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1533 x
= pfkey_xfrm_state_lookup(net
, hdr
, ext_hdrs
);
1537 if ((err
= security_xfrm_state_delete(x
)))
1540 if (xfrm_state_kern(x
)) {
1545 err
= xfrm_state_delete(x
);
1550 c
.seq
= hdr
->sadb_msg_seq
;
1551 c
.portid
= hdr
->sadb_msg_pid
;
1552 c
.event
= XFRM_MSG_DELSA
;
1553 km_state_notify(x
, &c
);
1555 xfrm_audit_state_delete(x
, err
? 0 : 1, true);
1561 static int pfkey_get(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1563 struct net
*net
= sock_net(sk
);
1565 struct sk_buff
*out_skb
;
1566 struct sadb_msg
*out_hdr
;
1567 struct xfrm_state
*x
;
1569 if (!ext_hdrs
[SADB_EXT_SA
-1] ||
1570 !present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
1571 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]))
1574 x
= pfkey_xfrm_state_lookup(net
, hdr
, ext_hdrs
);
1578 out_skb
= pfkey_xfrm_state2msg(x
);
1579 proto
= x
->id
.proto
;
1581 if (IS_ERR(out_skb
))
1582 return PTR_ERR(out_skb
);
1584 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1585 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
1586 out_hdr
->sadb_msg_type
= SADB_GET
;
1587 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(proto
);
1588 out_hdr
->sadb_msg_errno
= 0;
1589 out_hdr
->sadb_msg_reserved
= 0;
1590 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
1591 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
1592 pfkey_broadcast(out_skb
, BROADCAST_ONE
, sk
, sock_net(sk
));
1597 static struct sk_buff
*compose_sadb_supported(const struct sadb_msg
*orig
,
1600 struct sk_buff
*skb
;
1601 struct sadb_msg
*hdr
;
1602 int len
, auth_len
, enc_len
, i
;
1604 auth_len
= xfrm_count_pfkey_auth_supported();
1606 auth_len
*= sizeof(struct sadb_alg
);
1607 auth_len
+= sizeof(struct sadb_supported
);
1610 enc_len
= xfrm_count_pfkey_enc_supported();
1612 enc_len
*= sizeof(struct sadb_alg
);
1613 enc_len
+= sizeof(struct sadb_supported
);
1616 len
= enc_len
+ auth_len
+ sizeof(struct sadb_msg
);
1618 skb
= alloc_skb(len
+ 16, allocation
);
1622 hdr
= skb_put(skb
, sizeof(*hdr
));
1623 pfkey_hdr_dup(hdr
, orig
);
1624 hdr
->sadb_msg_errno
= 0;
1625 hdr
->sadb_msg_len
= len
/ sizeof(uint64_t);
1628 struct sadb_supported
*sp
;
1629 struct sadb_alg
*ap
;
1631 sp
= skb_put(skb
, auth_len
);
1632 ap
= (struct sadb_alg
*) (sp
+ 1);
1634 sp
->sadb_supported_len
= auth_len
/ sizeof(uint64_t);
1635 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_AUTH
;
1637 for (i
= 0; ; i
++) {
1638 struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
1641 if (!aalg
->pfkey_supported
)
1643 if (aalg
->available
)
1649 struct sadb_supported
*sp
;
1650 struct sadb_alg
*ap
;
1652 sp
= skb_put(skb
, enc_len
);
1653 ap
= (struct sadb_alg
*) (sp
+ 1);
1655 sp
->sadb_supported_len
= enc_len
/ sizeof(uint64_t);
1656 sp
->sadb_supported_exttype
= SADB_EXT_SUPPORTED_ENCRYPT
;
1658 for (i
= 0; ; i
++) {
1659 struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
1662 if (!ealg
->pfkey_supported
)
1664 if (ealg
->available
)
1673 static int pfkey_register(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1675 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1676 struct sk_buff
*supp_skb
;
1678 if (hdr
->sadb_msg_satype
> SADB_SATYPE_MAX
)
1681 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
) {
1682 if (pfk
->registered
&(1<<hdr
->sadb_msg_satype
))
1684 pfk
->registered
|= (1<<hdr
->sadb_msg_satype
);
1689 supp_skb
= compose_sadb_supported(hdr
, GFP_KERNEL
);
1691 if (hdr
->sadb_msg_satype
!= SADB_SATYPE_UNSPEC
)
1692 pfk
->registered
&= ~(1<<hdr
->sadb_msg_satype
);
1697 pfkey_broadcast(supp_skb
, BROADCAST_REGISTERED
, sk
, sock_net(sk
));
1702 static int unicast_flush_resp(struct sock
*sk
, const struct sadb_msg
*ihdr
)
1704 struct sk_buff
*skb
;
1705 struct sadb_msg
*hdr
;
1707 skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
1711 hdr
= skb_put_data(skb
, ihdr
, sizeof(struct sadb_msg
));
1712 hdr
->sadb_msg_errno
= (uint8_t) 0;
1713 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
1715 return pfkey_broadcast(skb
, BROADCAST_ONE
, sk
, sock_net(sk
));
1718 static int key_notify_sa_flush(const struct km_event
*c
)
1720 struct sk_buff
*skb
;
1721 struct sadb_msg
*hdr
;
1723 skb
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
1726 hdr
= skb_put(skb
, sizeof(struct sadb_msg
));
1727 hdr
->sadb_msg_satype
= pfkey_proto2satype(c
->data
.proto
);
1728 hdr
->sadb_msg_type
= SADB_FLUSH
;
1729 hdr
->sadb_msg_seq
= c
->seq
;
1730 hdr
->sadb_msg_pid
= c
->portid
;
1731 hdr
->sadb_msg_version
= PF_KEY_V2
;
1732 hdr
->sadb_msg_errno
= (uint8_t) 0;
1733 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
1734 hdr
->sadb_msg_reserved
= 0;
1736 pfkey_broadcast(skb
, BROADCAST_ALL
, NULL
, c
->net
);
1741 static int pfkey_flush(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1743 struct net
*net
= sock_net(sk
);
1748 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1752 err
= xfrm_state_flush(net
, proto
, true);
1753 err2
= unicast_flush_resp(sk
, hdr
);
1755 if (err
== -ESRCH
) /* empty table - go quietly */
1757 return err
? err
: err2
;
1760 c
.data
.proto
= proto
;
1761 c
.seq
= hdr
->sadb_msg_seq
;
1762 c
.portid
= hdr
->sadb_msg_pid
;
1763 c
.event
= XFRM_MSG_FLUSHSA
;
1765 km_state_notify(NULL
, &c
);
1770 static int dump_sa(struct xfrm_state
*x
, int count
, void *ptr
)
1772 struct pfkey_sock
*pfk
= ptr
;
1773 struct sk_buff
*out_skb
;
1774 struct sadb_msg
*out_hdr
;
1776 if (!pfkey_can_dump(&pfk
->sk
))
1779 out_skb
= pfkey_xfrm_state2msg(x
);
1780 if (IS_ERR(out_skb
))
1781 return PTR_ERR(out_skb
);
1783 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
1784 out_hdr
->sadb_msg_version
= pfk
->dump
.msg_version
;
1785 out_hdr
->sadb_msg_type
= SADB_DUMP
;
1786 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
1787 out_hdr
->sadb_msg_errno
= 0;
1788 out_hdr
->sadb_msg_reserved
= 0;
1789 out_hdr
->sadb_msg_seq
= count
+ 1;
1790 out_hdr
->sadb_msg_pid
= pfk
->dump
.msg_portid
;
1793 pfkey_broadcast(pfk
->dump
.skb
, BROADCAST_ONE
,
1794 &pfk
->sk
, sock_net(&pfk
->sk
));
1795 pfk
->dump
.skb
= out_skb
;
1800 static int pfkey_dump_sa(struct pfkey_sock
*pfk
)
1802 struct net
*net
= sock_net(&pfk
->sk
);
1803 return xfrm_state_walk(net
, &pfk
->dump
.u
.state
, dump_sa
, (void *) pfk
);
1806 static void pfkey_dump_sa_done(struct pfkey_sock
*pfk
)
1808 struct net
*net
= sock_net(&pfk
->sk
);
1810 xfrm_state_walk_done(&pfk
->dump
.u
.state
, net
);
1813 static int pfkey_dump(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1816 struct xfrm_address_filter
*filter
= NULL
;
1817 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1819 mutex_lock(&pfk
->dump_lock
);
1820 if (pfk
->dump
.dump
!= NULL
) {
1821 mutex_unlock(&pfk
->dump_lock
);
1825 proto
= pfkey_satype2proto(hdr
->sadb_msg_satype
);
1827 mutex_unlock(&pfk
->dump_lock
);
1831 if (ext_hdrs
[SADB_X_EXT_FILTER
- 1]) {
1832 struct sadb_x_filter
*xfilter
= ext_hdrs
[SADB_X_EXT_FILTER
- 1];
1834 filter
= kmalloc(sizeof(*filter
), GFP_KERNEL
);
1835 if (filter
== NULL
) {
1836 mutex_unlock(&pfk
->dump_lock
);
1840 memcpy(&filter
->saddr
, &xfilter
->sadb_x_filter_saddr
,
1841 sizeof(xfrm_address_t
));
1842 memcpy(&filter
->daddr
, &xfilter
->sadb_x_filter_daddr
,
1843 sizeof(xfrm_address_t
));
1844 filter
->family
= xfilter
->sadb_x_filter_family
;
1845 filter
->splen
= xfilter
->sadb_x_filter_splen
;
1846 filter
->dplen
= xfilter
->sadb_x_filter_dplen
;
1849 pfk
->dump
.msg_version
= hdr
->sadb_msg_version
;
1850 pfk
->dump
.msg_portid
= hdr
->sadb_msg_pid
;
1851 pfk
->dump
.dump
= pfkey_dump_sa
;
1852 pfk
->dump
.done
= pfkey_dump_sa_done
;
1853 xfrm_state_walk_init(&pfk
->dump
.u
.state
, proto
, filter
);
1854 mutex_unlock(&pfk
->dump_lock
);
1856 return pfkey_do_dump(pfk
);
1859 static int pfkey_promisc(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
1861 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
1862 int satype
= hdr
->sadb_msg_satype
;
1863 bool reset_errno
= false;
1865 if (hdr
->sadb_msg_len
== (sizeof(*hdr
) / sizeof(uint64_t))) {
1867 if (satype
!= 0 && satype
!= 1)
1869 pfk
->promisc
= satype
;
1871 if (reset_errno
&& skb_cloned(skb
))
1872 skb
= skb_copy(skb
, GFP_KERNEL
);
1874 skb
= skb_clone(skb
, GFP_KERNEL
);
1876 if (reset_errno
&& skb
) {
1877 struct sadb_msg
*new_hdr
= (struct sadb_msg
*) skb
->data
;
1878 new_hdr
->sadb_msg_errno
= 0;
1881 pfkey_broadcast(skb
, BROADCAST_ALL
, NULL
, sock_net(sk
));
1885 static int check_reqid(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
1888 u32 reqid
= *(u32
*)ptr
;
1890 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
1891 if (xp
->xfrm_vec
[i
].reqid
== reqid
)
1897 static u32
gen_reqid(struct net
*net
)
1899 struct xfrm_policy_walk walk
;
1902 static u32 reqid
= IPSEC_MANUAL_REQID_MAX
;
1908 reqid
= IPSEC_MANUAL_REQID_MAX
+1;
1909 xfrm_policy_walk_init(&walk
, XFRM_POLICY_TYPE_MAIN
);
1910 rc
= xfrm_policy_walk(net
, &walk
, check_reqid
, (void*)&reqid
);
1911 xfrm_policy_walk_done(&walk
, net
);
1914 } while (reqid
!= start
);
1919 parse_ipsecrequest(struct xfrm_policy
*xp
, struct sadb_x_ipsecrequest
*rq
)
1921 struct net
*net
= xp_net(xp
);
1922 struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ xp
->xfrm_nr
;
1925 if (xp
->xfrm_nr
>= XFRM_MAX_DEPTH
)
1928 if (rq
->sadb_x_ipsecrequest_mode
== 0)
1931 t
->id
.proto
= rq
->sadb_x_ipsecrequest_proto
; /* XXX check proto */
1932 if ((mode
= pfkey_mode_to_xfrm(rq
->sadb_x_ipsecrequest_mode
)) < 0)
1935 if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_USE
)
1937 else if (rq
->sadb_x_ipsecrequest_level
== IPSEC_LEVEL_UNIQUE
) {
1938 t
->reqid
= rq
->sadb_x_ipsecrequest_reqid
;
1939 if (t
->reqid
> IPSEC_MANUAL_REQID_MAX
)
1941 if (!t
->reqid
&& !(t
->reqid
= gen_reqid(net
)))
1945 /* addresses present only in tunnel mode */
1946 if (t
->mode
== XFRM_MODE_TUNNEL
) {
1949 err
= parse_sockaddr_pair(
1950 (struct sockaddr
*)(rq
+ 1),
1951 rq
->sadb_x_ipsecrequest_len
- sizeof(*rq
),
1952 &t
->saddr
, &t
->id
.daddr
, &t
->encap_family
);
1956 t
->encap_family
= xp
->family
;
1958 /* No way to set this via kame pfkey */
1965 parse_ipsecrequests(struct xfrm_policy
*xp
, struct sadb_x_policy
*pol
)
1968 int len
= pol
->sadb_x_policy_len
*8 - sizeof(struct sadb_x_policy
);
1969 struct sadb_x_ipsecrequest
*rq
= (void*)(pol
+1);
1971 if (pol
->sadb_x_policy_len
* 8 < sizeof(struct sadb_x_policy
))
1974 while (len
>= sizeof(*rq
)) {
1975 if (len
< rq
->sadb_x_ipsecrequest_len
||
1976 rq
->sadb_x_ipsecrequest_len
< sizeof(*rq
))
1979 if ((err
= parse_ipsecrequest(xp
, rq
)) < 0)
1981 len
-= rq
->sadb_x_ipsecrequest_len
;
1982 rq
= (void*)((u8
*)rq
+ rq
->sadb_x_ipsecrequest_len
);
1987 static inline int pfkey_xfrm_policy2sec_ctx_size(const struct xfrm_policy
*xp
)
1989 struct xfrm_sec_ctx
*xfrm_ctx
= xp
->security
;
1992 int len
= sizeof(struct sadb_x_sec_ctx
);
1993 len
+= xfrm_ctx
->ctx_len
;
1994 return PFKEY_ALIGN8(len
);
1999 static int pfkey_xfrm_policy2msg_size(const struct xfrm_policy
*xp
)
2001 const struct xfrm_tmpl
*t
;
2002 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
2006 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
2007 t
= xp
->xfrm_vec
+ i
;
2008 socklen
+= pfkey_sockaddr_len(t
->encap_family
);
2011 return sizeof(struct sadb_msg
) +
2012 (sizeof(struct sadb_lifetime
) * 3) +
2013 (sizeof(struct sadb_address
) * 2) +
2014 (sockaddr_size
* 2) +
2015 sizeof(struct sadb_x_policy
) +
2016 (xp
->xfrm_nr
* sizeof(struct sadb_x_ipsecrequest
)) +
2018 pfkey_xfrm_policy2sec_ctx_size(xp
);
2021 static struct sk_buff
* pfkey_xfrm_policy2msg_prep(const struct xfrm_policy
*xp
)
2023 struct sk_buff
*skb
;
2026 size
= pfkey_xfrm_policy2msg_size(xp
);
2028 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
2030 return ERR_PTR(-ENOBUFS
);
2035 static int pfkey_xfrm_policy2msg(struct sk_buff
*skb
, const struct xfrm_policy
*xp
, int dir
)
2037 struct sadb_msg
*hdr
;
2038 struct sadb_address
*addr
;
2039 struct sadb_lifetime
*lifetime
;
2040 struct sadb_x_policy
*pol
;
2041 struct sadb_x_sec_ctx
*sec_ctx
;
2042 struct xfrm_sec_ctx
*xfrm_ctx
;
2045 int sockaddr_size
= pfkey_sockaddr_size(xp
->family
);
2046 int socklen
= pfkey_sockaddr_len(xp
->family
);
2048 size
= pfkey_xfrm_policy2msg_size(xp
);
2050 /* call should fill header later */
2051 hdr
= skb_put(skb
, sizeof(struct sadb_msg
));
2052 memset(hdr
, 0, size
); /* XXX do we need this ? */
2055 addr
= skb_put(skb
, sizeof(struct sadb_address
) + sockaddr_size
);
2056 addr
->sadb_address_len
=
2057 (sizeof(struct sadb_address
)+sockaddr_size
)/
2059 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
2060 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
2061 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_s
;
2062 addr
->sadb_address_reserved
= 0;
2063 if (!pfkey_sockaddr_fill(&xp
->selector
.saddr
,
2065 (struct sockaddr
*) (addr
+ 1),
2070 addr
= skb_put(skb
, sizeof(struct sadb_address
) + sockaddr_size
);
2071 addr
->sadb_address_len
=
2072 (sizeof(struct sadb_address
)+sockaddr_size
)/
2074 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
2075 addr
->sadb_address_proto
= pfkey_proto_from_xfrm(xp
->selector
.proto
);
2076 addr
->sadb_address_prefixlen
= xp
->selector
.prefixlen_d
;
2077 addr
->sadb_address_reserved
= 0;
2079 pfkey_sockaddr_fill(&xp
->selector
.daddr
, xp
->selector
.dport
,
2080 (struct sockaddr
*) (addr
+ 1),
2084 lifetime
= skb_put(skb
, sizeof(struct sadb_lifetime
));
2085 lifetime
->sadb_lifetime_len
=
2086 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2087 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_HARD
;
2088 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.hard_packet_limit
);
2089 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.hard_byte_limit
);
2090 lifetime
->sadb_lifetime_addtime
= xp
->lft
.hard_add_expires_seconds
;
2091 lifetime
->sadb_lifetime_usetime
= xp
->lft
.hard_use_expires_seconds
;
2093 lifetime
= skb_put(skb
, sizeof(struct sadb_lifetime
));
2094 lifetime
->sadb_lifetime_len
=
2095 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2096 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_SOFT
;
2097 lifetime
->sadb_lifetime_allocations
= _X2KEY(xp
->lft
.soft_packet_limit
);
2098 lifetime
->sadb_lifetime_bytes
= _X2KEY(xp
->lft
.soft_byte_limit
);
2099 lifetime
->sadb_lifetime_addtime
= xp
->lft
.soft_add_expires_seconds
;
2100 lifetime
->sadb_lifetime_usetime
= xp
->lft
.soft_use_expires_seconds
;
2102 lifetime
= skb_put(skb
, sizeof(struct sadb_lifetime
));
2103 lifetime
->sadb_lifetime_len
=
2104 sizeof(struct sadb_lifetime
)/sizeof(uint64_t);
2105 lifetime
->sadb_lifetime_exttype
= SADB_EXT_LIFETIME_CURRENT
;
2106 lifetime
->sadb_lifetime_allocations
= xp
->curlft
.packets
;
2107 lifetime
->sadb_lifetime_bytes
= xp
->curlft
.bytes
;
2108 lifetime
->sadb_lifetime_addtime
= xp
->curlft
.add_time
;
2109 lifetime
->sadb_lifetime_usetime
= xp
->curlft
.use_time
;
2111 pol
= skb_put(skb
, sizeof(struct sadb_x_policy
));
2112 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
2113 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
2114 pol
->sadb_x_policy_type
= IPSEC_POLICY_DISCARD
;
2115 if (xp
->action
== XFRM_POLICY_ALLOW
) {
2117 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
2119 pol
->sadb_x_policy_type
= IPSEC_POLICY_NONE
;
2121 pol
->sadb_x_policy_dir
= dir
+1;
2122 pol
->sadb_x_policy_reserved
= 0;
2123 pol
->sadb_x_policy_id
= xp
->index
;
2124 pol
->sadb_x_policy_priority
= xp
->priority
;
2126 for (i
=0; i
<xp
->xfrm_nr
; i
++) {
2127 const struct xfrm_tmpl
*t
= xp
->xfrm_vec
+ i
;
2128 struct sadb_x_ipsecrequest
*rq
;
2132 req_size
= sizeof(struct sadb_x_ipsecrequest
);
2133 if (t
->mode
== XFRM_MODE_TUNNEL
) {
2134 socklen
= pfkey_sockaddr_len(t
->encap_family
);
2135 req_size
+= socklen
* 2;
2139 rq
= skb_put(skb
, req_size
);
2140 pol
->sadb_x_policy_len
+= req_size
/8;
2141 memset(rq
, 0, sizeof(*rq
));
2142 rq
->sadb_x_ipsecrequest_len
= req_size
;
2143 rq
->sadb_x_ipsecrequest_proto
= t
->id
.proto
;
2144 if ((mode
= pfkey_mode_from_xfrm(t
->mode
)) < 0)
2146 rq
->sadb_x_ipsecrequest_mode
= mode
;
2147 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_REQUIRE
;
2149 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_UNIQUE
;
2151 rq
->sadb_x_ipsecrequest_level
= IPSEC_LEVEL_USE
;
2152 rq
->sadb_x_ipsecrequest_reqid
= t
->reqid
;
2154 if (t
->mode
== XFRM_MODE_TUNNEL
) {
2155 u8
*sa
= (void *)(rq
+ 1);
2156 pfkey_sockaddr_fill(&t
->saddr
, 0,
2157 (struct sockaddr
*)sa
,
2159 pfkey_sockaddr_fill(&t
->id
.daddr
, 0,
2160 (struct sockaddr
*) (sa
+ socklen
),
2165 /* security context */
2166 if ((xfrm_ctx
= xp
->security
)) {
2167 int ctx_size
= pfkey_xfrm_policy2sec_ctx_size(xp
);
2169 sec_ctx
= skb_put(skb
, ctx_size
);
2170 sec_ctx
->sadb_x_sec_len
= ctx_size
/ sizeof(uint64_t);
2171 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
2172 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
2173 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
2174 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
2175 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
2179 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
2180 hdr
->sadb_msg_reserved
= refcount_read(&xp
->refcnt
);
2185 static int key_notify_policy(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
2187 struct sk_buff
*out_skb
;
2188 struct sadb_msg
*out_hdr
;
2191 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2192 if (IS_ERR(out_skb
))
2193 return PTR_ERR(out_skb
);
2195 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2199 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2200 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
2202 if (c
->data
.byid
&& c
->event
== XFRM_MSG_DELPOLICY
)
2203 out_hdr
->sadb_msg_type
= SADB_X_SPDDELETE2
;
2205 out_hdr
->sadb_msg_type
= event2poltype(c
->event
);
2206 out_hdr
->sadb_msg_errno
= 0;
2207 out_hdr
->sadb_msg_seq
= c
->seq
;
2208 out_hdr
->sadb_msg_pid
= c
->portid
;
2209 pfkey_broadcast(out_skb
, BROADCAST_ALL
, NULL
, xp_net(xp
));
2214 static int pfkey_spdadd(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2216 struct net
*net
= sock_net(sk
);
2218 struct sadb_lifetime
*lifetime
;
2219 struct sadb_address
*sa
;
2220 struct sadb_x_policy
*pol
;
2221 struct xfrm_policy
*xp
;
2223 struct sadb_x_sec_ctx
*sec_ctx
;
2225 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2226 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2227 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2230 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2231 if (pol
->sadb_x_policy_type
> IPSEC_POLICY_IPSEC
)
2233 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2236 xp
= xfrm_policy_alloc(net
, GFP_KERNEL
);
2240 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
2241 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
2242 xp
->priority
= pol
->sadb_x_policy_priority
;
2244 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1];
2245 xp
->family
= pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.saddr
);
2246 xp
->selector
.family
= xp
->family
;
2247 xp
->selector
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2248 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2249 xp
->selector
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2250 if (xp
->selector
.sport
)
2251 xp
->selector
.sport_mask
= htons(0xffff);
2253 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
2254 pfkey_sadb_addr2xfrm_addr(sa
, &xp
->selector
.daddr
);
2255 xp
->selector
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2257 /* Amusing, we set this twice. KAME apps appear to set same value
2258 * in both addresses.
2260 xp
->selector
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2262 xp
->selector
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2263 if (xp
->selector
.dport
)
2264 xp
->selector
.dport_mask
= htons(0xffff);
2266 sec_ctx
= ext_hdrs
[SADB_X_EXT_SEC_CTX
- 1];
2267 if (sec_ctx
!= NULL
) {
2268 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
, GFP_KERNEL
);
2275 err
= security_xfrm_policy_alloc(&xp
->security
, uctx
, GFP_KERNEL
);
2282 xp
->lft
.soft_byte_limit
= XFRM_INF
;
2283 xp
->lft
.hard_byte_limit
= XFRM_INF
;
2284 xp
->lft
.soft_packet_limit
= XFRM_INF
;
2285 xp
->lft
.hard_packet_limit
= XFRM_INF
;
2286 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_HARD
-1]) != NULL
) {
2287 xp
->lft
.hard_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2288 xp
->lft
.hard_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2289 xp
->lft
.hard_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2290 xp
->lft
.hard_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2292 if ((lifetime
= ext_hdrs
[SADB_EXT_LIFETIME_SOFT
-1]) != NULL
) {
2293 xp
->lft
.soft_packet_limit
= _KEY2X(lifetime
->sadb_lifetime_allocations
);
2294 xp
->lft
.soft_byte_limit
= _KEY2X(lifetime
->sadb_lifetime_bytes
);
2295 xp
->lft
.soft_add_expires_seconds
= lifetime
->sadb_lifetime_addtime
;
2296 xp
->lft
.soft_use_expires_seconds
= lifetime
->sadb_lifetime_usetime
;
2299 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
2300 (err
= parse_ipsecrequests(xp
, pol
)) < 0)
2303 err
= xfrm_policy_insert(pol
->sadb_x_policy_dir
-1, xp
,
2304 hdr
->sadb_msg_type
!= SADB_X_SPDUPDATE
);
2306 xfrm_audit_policy_add(xp
, err
? 0 : 1, true);
2311 if (hdr
->sadb_msg_type
== SADB_X_SPDUPDATE
)
2312 c
.event
= XFRM_MSG_UPDPOLICY
;
2314 c
.event
= XFRM_MSG_NEWPOLICY
;
2316 c
.seq
= hdr
->sadb_msg_seq
;
2317 c
.portid
= hdr
->sadb_msg_pid
;
2319 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2325 xfrm_policy_destroy(xp
);
2329 static int pfkey_spddelete(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2331 struct net
*net
= sock_net(sk
);
2333 struct sadb_address
*sa
;
2334 struct sadb_x_policy
*pol
;
2335 struct xfrm_policy
*xp
;
2336 struct xfrm_selector sel
;
2338 struct sadb_x_sec_ctx
*sec_ctx
;
2339 struct xfrm_sec_ctx
*pol_ctx
= NULL
;
2341 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1],
2342 ext_hdrs
[SADB_EXT_ADDRESS_DST
-1]) ||
2343 !ext_hdrs
[SADB_X_EXT_POLICY
-1])
2346 pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1];
2347 if (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
)
2350 memset(&sel
, 0, sizeof(sel
));
2352 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
-1];
2353 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2354 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2355 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2356 sel
.sport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2358 sel
.sport_mask
= htons(0xffff);
2360 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
-1];
2361 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2362 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2363 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2364 sel
.dport
= ((struct sockaddr_in
*)(sa
+1))->sin_port
;
2366 sel
.dport_mask
= htons(0xffff);
2368 sec_ctx
= ext_hdrs
[SADB_X_EXT_SEC_CTX
- 1];
2369 if (sec_ctx
!= NULL
) {
2370 struct xfrm_user_sec_ctx
*uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
, GFP_KERNEL
);
2375 err
= security_xfrm_policy_alloc(&pol_ctx
, uctx
, GFP_KERNEL
);
2381 xp
= xfrm_policy_bysel_ctx(net
, DUMMY_MARK
, XFRM_POLICY_TYPE_MAIN
,
2382 pol
->sadb_x_policy_dir
- 1, &sel
, pol_ctx
,
2384 security_xfrm_policy_free(pol_ctx
);
2388 xfrm_audit_policy_delete(xp
, err
? 0 : 1, true);
2393 c
.seq
= hdr
->sadb_msg_seq
;
2394 c
.portid
= hdr
->sadb_msg_pid
;
2396 c
.event
= XFRM_MSG_DELPOLICY
;
2397 km_policy_notify(xp
, pol
->sadb_x_policy_dir
-1, &c
);
2402 xfrm_garbage_collect(net
);
2406 static int key_pol_get_resp(struct sock
*sk
, struct xfrm_policy
*xp
, const struct sadb_msg
*hdr
, int dir
)
2409 struct sk_buff
*out_skb
;
2410 struct sadb_msg
*out_hdr
;
2413 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2414 if (IS_ERR(out_skb
)) {
2415 err
= PTR_ERR(out_skb
);
2418 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2422 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2423 out_hdr
->sadb_msg_version
= hdr
->sadb_msg_version
;
2424 out_hdr
->sadb_msg_type
= hdr
->sadb_msg_type
;
2425 out_hdr
->sadb_msg_satype
= 0;
2426 out_hdr
->sadb_msg_errno
= 0;
2427 out_hdr
->sadb_msg_seq
= hdr
->sadb_msg_seq
;
2428 out_hdr
->sadb_msg_pid
= hdr
->sadb_msg_pid
;
2429 pfkey_broadcast(out_skb
, BROADCAST_ONE
, sk
, xp_net(xp
));
2436 static int pfkey_sockaddr_pair_size(sa_family_t family
)
2438 return PFKEY_ALIGN8(pfkey_sockaddr_len(family
) * 2);
2441 static int parse_sockaddr_pair(struct sockaddr
*sa
, int ext_len
,
2442 xfrm_address_t
*saddr
, xfrm_address_t
*daddr
,
2447 if (ext_len
< 2 || ext_len
< pfkey_sockaddr_pair_size(sa
->sa_family
))
2450 af
= pfkey_sockaddr_extract(sa
, saddr
);
2454 socklen
= pfkey_sockaddr_len(af
);
2455 if (pfkey_sockaddr_extract((struct sockaddr
*) (((u8
*)sa
) + socklen
),
2463 #ifdef CONFIG_NET_KEY_MIGRATE
2464 static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest
*rq1
, int len
,
2465 struct xfrm_migrate
*m
)
2468 struct sadb_x_ipsecrequest
*rq2
;
2471 if (len
< sizeof(*rq1
) ||
2472 len
< rq1
->sadb_x_ipsecrequest_len
||
2473 rq1
->sadb_x_ipsecrequest_len
< sizeof(*rq1
))
2477 err
= parse_sockaddr_pair((struct sockaddr
*)(rq1
+ 1),
2478 rq1
->sadb_x_ipsecrequest_len
- sizeof(*rq1
),
2479 &m
->old_saddr
, &m
->old_daddr
,
2484 rq2
= (struct sadb_x_ipsecrequest
*)((u8
*)rq1
+ rq1
->sadb_x_ipsecrequest_len
);
2485 len
-= rq1
->sadb_x_ipsecrequest_len
;
2487 if (len
<= sizeof(*rq2
) ||
2488 len
< rq2
->sadb_x_ipsecrequest_len
||
2489 rq2
->sadb_x_ipsecrequest_len
< sizeof(*rq2
))
2493 err
= parse_sockaddr_pair((struct sockaddr
*)(rq2
+ 1),
2494 rq2
->sadb_x_ipsecrequest_len
- sizeof(*rq2
),
2495 &m
->new_saddr
, &m
->new_daddr
,
2500 if (rq1
->sadb_x_ipsecrequest_proto
!= rq2
->sadb_x_ipsecrequest_proto
||
2501 rq1
->sadb_x_ipsecrequest_mode
!= rq2
->sadb_x_ipsecrequest_mode
||
2502 rq1
->sadb_x_ipsecrequest_reqid
!= rq2
->sadb_x_ipsecrequest_reqid
)
2505 m
->proto
= rq1
->sadb_x_ipsecrequest_proto
;
2506 if ((mode
= pfkey_mode_to_xfrm(rq1
->sadb_x_ipsecrequest_mode
)) < 0)
2509 m
->reqid
= rq1
->sadb_x_ipsecrequest_reqid
;
2511 return ((int)(rq1
->sadb_x_ipsecrequest_len
+
2512 rq2
->sadb_x_ipsecrequest_len
));
2515 static int pfkey_migrate(struct sock
*sk
, struct sk_buff
*skb
,
2516 const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2518 int i
, len
, ret
, err
= -EINVAL
;
2520 struct sadb_address
*sa
;
2521 struct sadb_x_kmaddress
*kma
;
2522 struct sadb_x_policy
*pol
;
2523 struct sadb_x_ipsecrequest
*rq
;
2524 struct xfrm_selector sel
;
2525 struct xfrm_migrate m
[XFRM_MAX_DEPTH
];
2526 struct xfrm_kmaddress k
;
2527 struct net
*net
= sock_net(sk
);
2529 if (!present_and_same_family(ext_hdrs
[SADB_EXT_ADDRESS_SRC
- 1],
2530 ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1]) ||
2531 !ext_hdrs
[SADB_X_EXT_POLICY
- 1]) {
2536 kma
= ext_hdrs
[SADB_X_EXT_KMADDRESS
- 1];
2537 pol
= ext_hdrs
[SADB_X_EXT_POLICY
- 1];
2539 if (pol
->sadb_x_policy_dir
>= IPSEC_DIR_MAX
) {
2545 /* convert sadb_x_kmaddress to xfrm_kmaddress */
2546 k
.reserved
= kma
->sadb_x_kmaddress_reserved
;
2547 ret
= parse_sockaddr_pair((struct sockaddr
*)(kma
+ 1),
2548 8*(kma
->sadb_x_kmaddress_len
) - sizeof(*kma
),
2549 &k
.local
, &k
.remote
, &k
.family
);
2556 dir
= pol
->sadb_x_policy_dir
- 1;
2557 memset(&sel
, 0, sizeof(sel
));
2559 /* set source address info of selector */
2560 sa
= ext_hdrs
[SADB_EXT_ADDRESS_SRC
- 1];
2561 sel
.family
= pfkey_sadb_addr2xfrm_addr(sa
, &sel
.saddr
);
2562 sel
.prefixlen_s
= sa
->sadb_address_prefixlen
;
2563 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2564 sel
.sport
= ((struct sockaddr_in
*)(sa
+ 1))->sin_port
;
2566 sel
.sport_mask
= htons(0xffff);
2568 /* set destination address info of selector */
2569 sa
= ext_hdrs
[SADB_EXT_ADDRESS_DST
- 1];
2570 pfkey_sadb_addr2xfrm_addr(sa
, &sel
.daddr
);
2571 sel
.prefixlen_d
= sa
->sadb_address_prefixlen
;
2572 sel
.proto
= pfkey_proto_to_xfrm(sa
->sadb_address_proto
);
2573 sel
.dport
= ((struct sockaddr_in
*)(sa
+ 1))->sin_port
;
2575 sel
.dport_mask
= htons(0xffff);
2577 rq
= (struct sadb_x_ipsecrequest
*)(pol
+ 1);
2579 /* extract ipsecrequests */
2581 len
= pol
->sadb_x_policy_len
* 8 - sizeof(struct sadb_x_policy
);
2583 while (len
> 0 && i
< XFRM_MAX_DEPTH
) {
2584 ret
= ipsecrequests_to_migrate(rq
, len
, &m
[i
]);
2589 rq
= (struct sadb_x_ipsecrequest
*)((u8
*)rq
+ ret
);
2595 if (!i
|| len
> 0) {
2600 return xfrm_migrate(&sel
, dir
, XFRM_POLICY_TYPE_MAIN
, m
, i
,
2601 kma
? &k
: NULL
, net
, NULL
);
2607 static int pfkey_migrate(struct sock
*sk
, struct sk_buff
*skb
,
2608 const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2610 return -ENOPROTOOPT
;
2615 static int pfkey_spdget(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2617 struct net
*net
= sock_net(sk
);
2619 int err
= 0, delete;
2620 struct sadb_x_policy
*pol
;
2621 struct xfrm_policy
*xp
;
2624 if ((pol
= ext_hdrs
[SADB_X_EXT_POLICY
-1]) == NULL
)
2627 dir
= xfrm_policy_id2dir(pol
->sadb_x_policy_id
);
2628 if (dir
>= XFRM_POLICY_MAX
)
2631 delete = (hdr
->sadb_msg_type
== SADB_X_SPDDELETE2
);
2632 xp
= xfrm_policy_byid(net
, DUMMY_MARK
, XFRM_POLICY_TYPE_MAIN
,
2633 dir
, pol
->sadb_x_policy_id
, delete, &err
);
2638 xfrm_audit_policy_delete(xp
, err
? 0 : 1, true);
2642 c
.seq
= hdr
->sadb_msg_seq
;
2643 c
.portid
= hdr
->sadb_msg_pid
;
2645 c
.event
= XFRM_MSG_DELPOLICY
;
2646 km_policy_notify(xp
, dir
, &c
);
2648 err
= key_pol_get_resp(sk
, xp
, hdr
, dir
);
2653 if (delete && err
== 0)
2654 xfrm_garbage_collect(net
);
2658 static int dump_sp(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
2660 struct pfkey_sock
*pfk
= ptr
;
2661 struct sk_buff
*out_skb
;
2662 struct sadb_msg
*out_hdr
;
2665 if (!pfkey_can_dump(&pfk
->sk
))
2668 out_skb
= pfkey_xfrm_policy2msg_prep(xp
);
2669 if (IS_ERR(out_skb
))
2670 return PTR_ERR(out_skb
);
2672 err
= pfkey_xfrm_policy2msg(out_skb
, xp
, dir
);
2676 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
2677 out_hdr
->sadb_msg_version
= pfk
->dump
.msg_version
;
2678 out_hdr
->sadb_msg_type
= SADB_X_SPDDUMP
;
2679 out_hdr
->sadb_msg_satype
= SADB_SATYPE_UNSPEC
;
2680 out_hdr
->sadb_msg_errno
= 0;
2681 out_hdr
->sadb_msg_seq
= count
+ 1;
2682 out_hdr
->sadb_msg_pid
= pfk
->dump
.msg_portid
;
2685 pfkey_broadcast(pfk
->dump
.skb
, BROADCAST_ONE
,
2686 &pfk
->sk
, sock_net(&pfk
->sk
));
2687 pfk
->dump
.skb
= out_skb
;
2692 static int pfkey_dump_sp(struct pfkey_sock
*pfk
)
2694 struct net
*net
= sock_net(&pfk
->sk
);
2695 return xfrm_policy_walk(net
, &pfk
->dump
.u
.policy
, dump_sp
, (void *) pfk
);
2698 static void pfkey_dump_sp_done(struct pfkey_sock
*pfk
)
2700 struct net
*net
= sock_net((struct sock
*)pfk
);
2702 xfrm_policy_walk_done(&pfk
->dump
.u
.policy
, net
);
2705 static int pfkey_spddump(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2707 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
2709 mutex_lock(&pfk
->dump_lock
);
2710 if (pfk
->dump
.dump
!= NULL
) {
2711 mutex_unlock(&pfk
->dump_lock
);
2715 pfk
->dump
.msg_version
= hdr
->sadb_msg_version
;
2716 pfk
->dump
.msg_portid
= hdr
->sadb_msg_pid
;
2717 pfk
->dump
.dump
= pfkey_dump_sp
;
2718 pfk
->dump
.done
= pfkey_dump_sp_done
;
2719 xfrm_policy_walk_init(&pfk
->dump
.u
.policy
, XFRM_POLICY_TYPE_MAIN
);
2720 mutex_unlock(&pfk
->dump_lock
);
2722 return pfkey_do_dump(pfk
);
2725 static int key_notify_policy_flush(const struct km_event
*c
)
2727 struct sk_buff
*skb_out
;
2728 struct sadb_msg
*hdr
;
2730 skb_out
= alloc_skb(sizeof(struct sadb_msg
) + 16, GFP_ATOMIC
);
2733 hdr
= skb_put(skb_out
, sizeof(struct sadb_msg
));
2734 hdr
->sadb_msg_type
= SADB_X_SPDFLUSH
;
2735 hdr
->sadb_msg_seq
= c
->seq
;
2736 hdr
->sadb_msg_pid
= c
->portid
;
2737 hdr
->sadb_msg_version
= PF_KEY_V2
;
2738 hdr
->sadb_msg_errno
= (uint8_t) 0;
2739 hdr
->sadb_msg_satype
= SADB_SATYPE_UNSPEC
;
2740 hdr
->sadb_msg_len
= (sizeof(struct sadb_msg
) / sizeof(uint64_t));
2741 hdr
->sadb_msg_reserved
= 0;
2742 pfkey_broadcast(skb_out
, BROADCAST_ALL
, NULL
, c
->net
);
2747 static int pfkey_spdflush(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
, void * const *ext_hdrs
)
2749 struct net
*net
= sock_net(sk
);
2753 err
= xfrm_policy_flush(net
, XFRM_POLICY_TYPE_MAIN
, true);
2755 xfrm_garbage_collect(net
);
2756 err2
= unicast_flush_resp(sk
, hdr
);
2758 if (err
== -ESRCH
) /* empty table - old silent behavior */
2763 c
.data
.type
= XFRM_POLICY_TYPE_MAIN
;
2764 c
.event
= XFRM_MSG_FLUSHPOLICY
;
2765 c
.portid
= hdr
->sadb_msg_pid
;
2766 c
.seq
= hdr
->sadb_msg_seq
;
2768 km_policy_notify(NULL
, 0, &c
);
2773 typedef int (*pfkey_handler
)(struct sock
*sk
, struct sk_buff
*skb
,
2774 const struct sadb_msg
*hdr
, void * const *ext_hdrs
);
2775 static const pfkey_handler pfkey_funcs
[SADB_MAX
+ 1] = {
2776 [SADB_RESERVED
] = pfkey_reserved
,
2777 [SADB_GETSPI
] = pfkey_getspi
,
2778 [SADB_UPDATE
] = pfkey_add
,
2779 [SADB_ADD
] = pfkey_add
,
2780 [SADB_DELETE
] = pfkey_delete
,
2781 [SADB_GET
] = pfkey_get
,
2782 [SADB_ACQUIRE
] = pfkey_acquire
,
2783 [SADB_REGISTER
] = pfkey_register
,
2784 [SADB_EXPIRE
] = NULL
,
2785 [SADB_FLUSH
] = pfkey_flush
,
2786 [SADB_DUMP
] = pfkey_dump
,
2787 [SADB_X_PROMISC
] = pfkey_promisc
,
2788 [SADB_X_PCHANGE
] = NULL
,
2789 [SADB_X_SPDUPDATE
] = pfkey_spdadd
,
2790 [SADB_X_SPDADD
] = pfkey_spdadd
,
2791 [SADB_X_SPDDELETE
] = pfkey_spddelete
,
2792 [SADB_X_SPDGET
] = pfkey_spdget
,
2793 [SADB_X_SPDACQUIRE
] = NULL
,
2794 [SADB_X_SPDDUMP
] = pfkey_spddump
,
2795 [SADB_X_SPDFLUSH
] = pfkey_spdflush
,
2796 [SADB_X_SPDSETIDX
] = pfkey_spdadd
,
2797 [SADB_X_SPDDELETE2
] = pfkey_spdget
,
2798 [SADB_X_MIGRATE
] = pfkey_migrate
,
2801 static int pfkey_process(struct sock
*sk
, struct sk_buff
*skb
, const struct sadb_msg
*hdr
)
2803 void *ext_hdrs
[SADB_EXT_MAX
];
2806 pfkey_broadcast(skb_clone(skb
, GFP_KERNEL
),
2807 BROADCAST_PROMISC_ONLY
, NULL
, sock_net(sk
));
2809 memset(ext_hdrs
, 0, sizeof(ext_hdrs
));
2810 err
= parse_exthdrs(skb
, hdr
, ext_hdrs
);
2813 if (pfkey_funcs
[hdr
->sadb_msg_type
])
2814 err
= pfkey_funcs
[hdr
->sadb_msg_type
](sk
, skb
, hdr
, ext_hdrs
);
2819 static struct sadb_msg
*pfkey_get_base_msg(struct sk_buff
*skb
, int *errp
)
2821 struct sadb_msg
*hdr
= NULL
;
2823 if (skb
->len
< sizeof(*hdr
)) {
2826 hdr
= (struct sadb_msg
*) skb
->data
;
2827 if (hdr
->sadb_msg_version
!= PF_KEY_V2
||
2828 hdr
->sadb_msg_reserved
!= 0 ||
2829 (hdr
->sadb_msg_type
<= SADB_RESERVED
||
2830 hdr
->sadb_msg_type
> SADB_MAX
)) {
2833 } else if (hdr
->sadb_msg_len
!= (skb
->len
/
2834 sizeof(uint64_t)) ||
2835 hdr
->sadb_msg_len
< (sizeof(struct sadb_msg
) /
2836 sizeof(uint64_t))) {
2846 static inline int aalg_tmpl_set(const struct xfrm_tmpl
*t
,
2847 const struct xfrm_algo_desc
*d
)
2849 unsigned int id
= d
->desc
.sadb_alg_id
;
2851 if (id
>= sizeof(t
->aalgos
) * 8)
2854 return (t
->aalgos
>> id
) & 1;
2857 static inline int ealg_tmpl_set(const struct xfrm_tmpl
*t
,
2858 const struct xfrm_algo_desc
*d
)
2860 unsigned int id
= d
->desc
.sadb_alg_id
;
2862 if (id
>= sizeof(t
->ealgos
) * 8)
2865 return (t
->ealgos
>> id
) & 1;
2868 static int count_ah_combs(const struct xfrm_tmpl
*t
)
2872 for (i
= 0; ; i
++) {
2873 const struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2876 if (!aalg
->pfkey_supported
)
2878 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2879 sz
+= sizeof(struct sadb_comb
);
2881 return sz
+ sizeof(struct sadb_prop
);
2884 static int count_esp_combs(const struct xfrm_tmpl
*t
)
2888 for (i
= 0; ; i
++) {
2889 const struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2893 if (!ealg
->pfkey_supported
)
2896 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2899 for (k
= 1; ; k
++) {
2900 const struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2904 if (!aalg
->pfkey_supported
)
2907 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
)
2908 sz
+= sizeof(struct sadb_comb
);
2911 return sz
+ sizeof(struct sadb_prop
);
2914 static void dump_ah_combs(struct sk_buff
*skb
, const struct xfrm_tmpl
*t
)
2916 struct sadb_prop
*p
;
2919 p
= skb_put(skb
, sizeof(struct sadb_prop
));
2920 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2921 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2922 p
->sadb_prop_replay
= 32;
2923 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2925 for (i
= 0; ; i
++) {
2926 const struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(i
);
2930 if (!aalg
->pfkey_supported
)
2933 if (aalg_tmpl_set(t
, aalg
) && aalg
->available
) {
2934 struct sadb_comb
*c
;
2935 c
= skb_put_zero(skb
, sizeof(struct sadb_comb
));
2936 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2937 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2938 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2939 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2940 c
->sadb_comb_hard_addtime
= 24*60*60;
2941 c
->sadb_comb_soft_addtime
= 20*60*60;
2942 c
->sadb_comb_hard_usetime
= 8*60*60;
2943 c
->sadb_comb_soft_usetime
= 7*60*60;
2948 static void dump_esp_combs(struct sk_buff
*skb
, const struct xfrm_tmpl
*t
)
2950 struct sadb_prop
*p
;
2953 p
= skb_put(skb
, sizeof(struct sadb_prop
));
2954 p
->sadb_prop_len
= sizeof(struct sadb_prop
)/8;
2955 p
->sadb_prop_exttype
= SADB_EXT_PROPOSAL
;
2956 p
->sadb_prop_replay
= 32;
2957 memset(p
->sadb_prop_reserved
, 0, sizeof(p
->sadb_prop_reserved
));
2960 const struct xfrm_algo_desc
*ealg
= xfrm_ealg_get_byidx(i
);
2964 if (!ealg
->pfkey_supported
)
2967 if (!(ealg_tmpl_set(t
, ealg
) && ealg
->available
))
2970 for (k
= 1; ; k
++) {
2971 struct sadb_comb
*c
;
2972 const struct xfrm_algo_desc
*aalg
= xfrm_aalg_get_byidx(k
);
2975 if (!aalg
->pfkey_supported
)
2977 if (!(aalg_tmpl_set(t
, aalg
) && aalg
->available
))
2979 c
= skb_put(skb
, sizeof(struct sadb_comb
));
2980 memset(c
, 0, sizeof(*c
));
2981 p
->sadb_prop_len
+= sizeof(struct sadb_comb
)/8;
2982 c
->sadb_comb_auth
= aalg
->desc
.sadb_alg_id
;
2983 c
->sadb_comb_auth_minbits
= aalg
->desc
.sadb_alg_minbits
;
2984 c
->sadb_comb_auth_maxbits
= aalg
->desc
.sadb_alg_maxbits
;
2985 c
->sadb_comb_encrypt
= ealg
->desc
.sadb_alg_id
;
2986 c
->sadb_comb_encrypt_minbits
= ealg
->desc
.sadb_alg_minbits
;
2987 c
->sadb_comb_encrypt_maxbits
= ealg
->desc
.sadb_alg_maxbits
;
2988 c
->sadb_comb_hard_addtime
= 24*60*60;
2989 c
->sadb_comb_soft_addtime
= 20*60*60;
2990 c
->sadb_comb_hard_usetime
= 8*60*60;
2991 c
->sadb_comb_soft_usetime
= 7*60*60;
2996 static int key_notify_policy_expire(struct xfrm_policy
*xp
, const struct km_event
*c
)
3001 static int key_notify_sa_expire(struct xfrm_state
*x
, const struct km_event
*c
)
3003 struct sk_buff
*out_skb
;
3004 struct sadb_msg
*out_hdr
;
3008 hard
= c
->data
.hard
;
3014 out_skb
= pfkey_xfrm_state2msg_expire(x
, hsc
);
3015 if (IS_ERR(out_skb
))
3016 return PTR_ERR(out_skb
);
3018 out_hdr
= (struct sadb_msg
*) out_skb
->data
;
3019 out_hdr
->sadb_msg_version
= PF_KEY_V2
;
3020 out_hdr
->sadb_msg_type
= SADB_EXPIRE
;
3021 out_hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
3022 out_hdr
->sadb_msg_errno
= 0;
3023 out_hdr
->sadb_msg_reserved
= 0;
3024 out_hdr
->sadb_msg_seq
= 0;
3025 out_hdr
->sadb_msg_pid
= 0;
3027 pfkey_broadcast(out_skb
, BROADCAST_REGISTERED
, NULL
, xs_net(x
));
3031 static int pfkey_send_notify(struct xfrm_state
*x
, const struct km_event
*c
)
3033 struct net
*net
= x
? xs_net(x
) : c
->net
;
3034 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
3036 if (atomic_read(&net_pfkey
->socks_nr
) == 0)
3040 case XFRM_MSG_EXPIRE
:
3041 return key_notify_sa_expire(x
, c
);
3042 case XFRM_MSG_DELSA
:
3043 case XFRM_MSG_NEWSA
:
3044 case XFRM_MSG_UPDSA
:
3045 return key_notify_sa(x
, c
);
3046 case XFRM_MSG_FLUSHSA
:
3047 return key_notify_sa_flush(c
);
3048 case XFRM_MSG_NEWAE
: /* not yet supported */
3051 pr_err("pfkey: Unknown SA event %d\n", c
->event
);
3058 static int pfkey_send_policy_notify(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
3060 if (xp
&& xp
->type
!= XFRM_POLICY_TYPE_MAIN
)
3064 case XFRM_MSG_POLEXPIRE
:
3065 return key_notify_policy_expire(xp
, c
);
3066 case XFRM_MSG_DELPOLICY
:
3067 case XFRM_MSG_NEWPOLICY
:
3068 case XFRM_MSG_UPDPOLICY
:
3069 return key_notify_policy(xp
, dir
, c
);
3070 case XFRM_MSG_FLUSHPOLICY
:
3071 if (c
->data
.type
!= XFRM_POLICY_TYPE_MAIN
)
3073 return key_notify_policy_flush(c
);
3075 pr_err("pfkey: Unknown policy event %d\n", c
->event
);
3082 static u32
get_acqseq(void)
3085 static atomic_t acqseq
;
3088 res
= atomic_inc_return(&acqseq
);
3093 static bool pfkey_is_alive(const struct km_event
*c
)
3095 struct netns_pfkey
*net_pfkey
= net_generic(c
->net
, pfkey_net_id
);
3097 bool is_alive
= false;
3100 sk_for_each_rcu(sk
, &net_pfkey
->table
) {
3101 if (pfkey_sk(sk
)->registered
) {
3111 static int pfkey_send_acquire(struct xfrm_state
*x
, struct xfrm_tmpl
*t
, struct xfrm_policy
*xp
)
3113 struct sk_buff
*skb
;
3114 struct sadb_msg
*hdr
;
3115 struct sadb_address
*addr
;
3116 struct sadb_x_policy
*pol
;
3119 struct sadb_x_sec_ctx
*sec_ctx
;
3120 struct xfrm_sec_ctx
*xfrm_ctx
;
3123 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
3127 size
= sizeof(struct sadb_msg
) +
3128 (sizeof(struct sadb_address
) * 2) +
3129 (sockaddr_size
* 2) +
3130 sizeof(struct sadb_x_policy
);
3132 if (x
->id
.proto
== IPPROTO_AH
)
3133 size
+= count_ah_combs(t
);
3134 else if (x
->id
.proto
== IPPROTO_ESP
)
3135 size
+= count_esp_combs(t
);
3137 if ((xfrm_ctx
= x
->security
)) {
3138 ctx_size
= PFKEY_ALIGN8(xfrm_ctx
->ctx_len
);
3139 size
+= sizeof(struct sadb_x_sec_ctx
) + ctx_size
;
3142 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
3146 hdr
= skb_put(skb
, sizeof(struct sadb_msg
));
3147 hdr
->sadb_msg_version
= PF_KEY_V2
;
3148 hdr
->sadb_msg_type
= SADB_ACQUIRE
;
3149 hdr
->sadb_msg_satype
= pfkey_proto2satype(x
->id
.proto
);
3150 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3151 hdr
->sadb_msg_errno
= 0;
3152 hdr
->sadb_msg_reserved
= 0;
3153 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3154 hdr
->sadb_msg_pid
= 0;
3157 addr
= skb_put(skb
, sizeof(struct sadb_address
) + sockaddr_size
);
3158 addr
->sadb_address_len
=
3159 (sizeof(struct sadb_address
)+sockaddr_size
)/
3161 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3162 addr
->sadb_address_proto
= 0;
3163 addr
->sadb_address_reserved
= 0;
3164 addr
->sadb_address_prefixlen
=
3165 pfkey_sockaddr_fill(&x
->props
.saddr
, 0,
3166 (struct sockaddr
*) (addr
+ 1),
3168 if (!addr
->sadb_address_prefixlen
)
3172 addr
= skb_put(skb
, sizeof(struct sadb_address
) + sockaddr_size
);
3173 addr
->sadb_address_len
=
3174 (sizeof(struct sadb_address
)+sockaddr_size
)/
3176 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3177 addr
->sadb_address_proto
= 0;
3178 addr
->sadb_address_reserved
= 0;
3179 addr
->sadb_address_prefixlen
=
3180 pfkey_sockaddr_fill(&x
->id
.daddr
, 0,
3181 (struct sockaddr
*) (addr
+ 1),
3183 if (!addr
->sadb_address_prefixlen
)
3186 pol
= skb_put(skb
, sizeof(struct sadb_x_policy
));
3187 pol
->sadb_x_policy_len
= sizeof(struct sadb_x_policy
)/sizeof(uint64_t);
3188 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
3189 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
3190 pol
->sadb_x_policy_dir
= XFRM_POLICY_OUT
+ 1;
3191 pol
->sadb_x_policy_reserved
= 0;
3192 pol
->sadb_x_policy_id
= xp
->index
;
3193 pol
->sadb_x_policy_priority
= xp
->priority
;
3195 /* Set sadb_comb's. */
3196 if (x
->id
.proto
== IPPROTO_AH
)
3197 dump_ah_combs(skb
, t
);
3198 else if (x
->id
.proto
== IPPROTO_ESP
)
3199 dump_esp_combs(skb
, t
);
3201 /* security context */
3203 sec_ctx
= skb_put(skb
,
3204 sizeof(struct sadb_x_sec_ctx
) + ctx_size
);
3205 sec_ctx
->sadb_x_sec_len
=
3206 (sizeof(struct sadb_x_sec_ctx
) + ctx_size
) / sizeof(uint64_t);
3207 sec_ctx
->sadb_x_sec_exttype
= SADB_X_EXT_SEC_CTX
;
3208 sec_ctx
->sadb_x_ctx_doi
= xfrm_ctx
->ctx_doi
;
3209 sec_ctx
->sadb_x_ctx_alg
= xfrm_ctx
->ctx_alg
;
3210 sec_ctx
->sadb_x_ctx_len
= xfrm_ctx
->ctx_len
;
3211 memcpy(sec_ctx
+ 1, xfrm_ctx
->ctx_str
,
3215 return pfkey_broadcast(skb
, BROADCAST_REGISTERED
, NULL
, xs_net(x
));
3218 static struct xfrm_policy
*pfkey_compile_policy(struct sock
*sk
, int opt
,
3219 u8
*data
, int len
, int *dir
)
3221 struct net
*net
= sock_net(sk
);
3222 struct xfrm_policy
*xp
;
3223 struct sadb_x_policy
*pol
= (struct sadb_x_policy
*)data
;
3224 struct sadb_x_sec_ctx
*sec_ctx
;
3226 switch (sk
->sk_family
) {
3228 if (opt
!= IP_IPSEC_POLICY
) {
3233 #if IS_ENABLED(CONFIG_IPV6)
3235 if (opt
!= IPV6_IPSEC_POLICY
) {
3248 if (len
< sizeof(struct sadb_x_policy
) ||
3249 pol
->sadb_x_policy_len
*8 > len
||
3250 pol
->sadb_x_policy_type
> IPSEC_POLICY_BYPASS
||
3251 (!pol
->sadb_x_policy_dir
|| pol
->sadb_x_policy_dir
> IPSEC_DIR_OUTBOUND
))
3254 xp
= xfrm_policy_alloc(net
, GFP_ATOMIC
);
3260 xp
->action
= (pol
->sadb_x_policy_type
== IPSEC_POLICY_DISCARD
?
3261 XFRM_POLICY_BLOCK
: XFRM_POLICY_ALLOW
);
3263 xp
->lft
.soft_byte_limit
= XFRM_INF
;
3264 xp
->lft
.hard_byte_limit
= XFRM_INF
;
3265 xp
->lft
.soft_packet_limit
= XFRM_INF
;
3266 xp
->lft
.hard_packet_limit
= XFRM_INF
;
3267 xp
->family
= sk
->sk_family
;
3270 if (pol
->sadb_x_policy_type
== IPSEC_POLICY_IPSEC
&&
3271 (*dir
= parse_ipsecrequests(xp
, pol
)) < 0)
3274 /* security context too */
3275 if (len
>= (pol
->sadb_x_policy_len
*8 +
3276 sizeof(struct sadb_x_sec_ctx
))) {
3277 char *p
= (char *)pol
;
3278 struct xfrm_user_sec_ctx
*uctx
;
3280 p
+= pol
->sadb_x_policy_len
*8;
3281 sec_ctx
= (struct sadb_x_sec_ctx
*)p
;
3282 if (len
< pol
->sadb_x_policy_len
*8 +
3283 sec_ctx
->sadb_x_sec_len
*8) {
3287 if ((*dir
= verify_sec_ctx_len(p
)))
3289 uctx
= pfkey_sadb2xfrm_user_sec_ctx(sec_ctx
, GFP_ATOMIC
);
3290 *dir
= security_xfrm_policy_alloc(&xp
->security
, uctx
, GFP_ATOMIC
);
3297 *dir
= pol
->sadb_x_policy_dir
-1;
3302 xfrm_policy_destroy(xp
);
3306 static int pfkey_send_new_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
, __be16 sport
)
3308 struct sk_buff
*skb
;
3309 struct sadb_msg
*hdr
;
3311 struct sadb_address
*addr
;
3312 struct sadb_x_nat_t_port
*n_port
;
3315 __u8 satype
= (x
->id
.proto
== IPPROTO_ESP
? SADB_SATYPE_ESP
: 0);
3316 struct xfrm_encap_tmpl
*natt
= NULL
;
3318 sockaddr_size
= pfkey_sockaddr_size(x
->props
.family
);
3330 /* Build an SADB_X_NAT_T_NEW_MAPPING message:
3332 * HDR | SA | ADDRESS_SRC (old addr) | NAT_T_SPORT (old port) |
3333 * ADDRESS_DST (new addr) | NAT_T_DPORT (new port)
3336 size
= sizeof(struct sadb_msg
) +
3337 sizeof(struct sadb_sa
) +
3338 (sizeof(struct sadb_address
) * 2) +
3339 (sockaddr_size
* 2) +
3340 (sizeof(struct sadb_x_nat_t_port
) * 2);
3342 skb
= alloc_skb(size
+ 16, GFP_ATOMIC
);
3346 hdr
= skb_put(skb
, sizeof(struct sadb_msg
));
3347 hdr
->sadb_msg_version
= PF_KEY_V2
;
3348 hdr
->sadb_msg_type
= SADB_X_NAT_T_NEW_MAPPING
;
3349 hdr
->sadb_msg_satype
= satype
;
3350 hdr
->sadb_msg_len
= size
/ sizeof(uint64_t);
3351 hdr
->sadb_msg_errno
= 0;
3352 hdr
->sadb_msg_reserved
= 0;
3353 hdr
->sadb_msg_seq
= x
->km
.seq
= get_acqseq();
3354 hdr
->sadb_msg_pid
= 0;
3357 sa
= skb_put(skb
, sizeof(struct sadb_sa
));
3358 sa
->sadb_sa_len
= sizeof(struct sadb_sa
)/sizeof(uint64_t);
3359 sa
->sadb_sa_exttype
= SADB_EXT_SA
;
3360 sa
->sadb_sa_spi
= x
->id
.spi
;
3361 sa
->sadb_sa_replay
= 0;
3362 sa
->sadb_sa_state
= 0;
3363 sa
->sadb_sa_auth
= 0;
3364 sa
->sadb_sa_encrypt
= 0;
3365 sa
->sadb_sa_flags
= 0;
3367 /* ADDRESS_SRC (old addr) */
3368 addr
= skb_put(skb
, sizeof(struct sadb_address
) + sockaddr_size
);
3369 addr
->sadb_address_len
=
3370 (sizeof(struct sadb_address
)+sockaddr_size
)/
3372 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_SRC
;
3373 addr
->sadb_address_proto
= 0;
3374 addr
->sadb_address_reserved
= 0;
3375 addr
->sadb_address_prefixlen
=
3376 pfkey_sockaddr_fill(&x
->props
.saddr
, 0,
3377 (struct sockaddr
*) (addr
+ 1),
3379 if (!addr
->sadb_address_prefixlen
)
3382 /* NAT_T_SPORT (old port) */
3383 n_port
= skb_put(skb
, sizeof(*n_port
));
3384 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3385 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_SPORT
;
3386 n_port
->sadb_x_nat_t_port_port
= natt
->encap_sport
;
3387 n_port
->sadb_x_nat_t_port_reserved
= 0;
3389 /* ADDRESS_DST (new addr) */
3390 addr
= skb_put(skb
, sizeof(struct sadb_address
) + sockaddr_size
);
3391 addr
->sadb_address_len
=
3392 (sizeof(struct sadb_address
)+sockaddr_size
)/
3394 addr
->sadb_address_exttype
= SADB_EXT_ADDRESS_DST
;
3395 addr
->sadb_address_proto
= 0;
3396 addr
->sadb_address_reserved
= 0;
3397 addr
->sadb_address_prefixlen
=
3398 pfkey_sockaddr_fill(ipaddr
, 0,
3399 (struct sockaddr
*) (addr
+ 1),
3401 if (!addr
->sadb_address_prefixlen
)
3404 /* NAT_T_DPORT (new port) */
3405 n_port
= skb_put(skb
, sizeof(*n_port
));
3406 n_port
->sadb_x_nat_t_port_len
= sizeof(*n_port
)/sizeof(uint64_t);
3407 n_port
->sadb_x_nat_t_port_exttype
= SADB_X_EXT_NAT_T_DPORT
;
3408 n_port
->sadb_x_nat_t_port_port
= sport
;
3409 n_port
->sadb_x_nat_t_port_reserved
= 0;
3411 return pfkey_broadcast(skb
, BROADCAST_REGISTERED
, NULL
, xs_net(x
));
3414 #ifdef CONFIG_NET_KEY_MIGRATE
3415 static int set_sadb_address(struct sk_buff
*skb
, int sasize
, int type
,
3416 const struct xfrm_selector
*sel
)
3418 struct sadb_address
*addr
;
3419 addr
= skb_put(skb
, sizeof(struct sadb_address
) + sasize
);
3420 addr
->sadb_address_len
= (sizeof(struct sadb_address
) + sasize
)/8;
3421 addr
->sadb_address_exttype
= type
;
3422 addr
->sadb_address_proto
= sel
->proto
;
3423 addr
->sadb_address_reserved
= 0;
3426 case SADB_EXT_ADDRESS_SRC
:
3427 addr
->sadb_address_prefixlen
= sel
->prefixlen_s
;
3428 pfkey_sockaddr_fill(&sel
->saddr
, 0,
3429 (struct sockaddr
*)(addr
+ 1),
3432 case SADB_EXT_ADDRESS_DST
:
3433 addr
->sadb_address_prefixlen
= sel
->prefixlen_d
;
3434 pfkey_sockaddr_fill(&sel
->daddr
, 0,
3435 (struct sockaddr
*)(addr
+ 1),
3446 static int set_sadb_kmaddress(struct sk_buff
*skb
, const struct xfrm_kmaddress
*k
)
3448 struct sadb_x_kmaddress
*kma
;
3450 int family
= k
->family
;
3451 int socklen
= pfkey_sockaddr_len(family
);
3454 size_req
= (sizeof(struct sadb_x_kmaddress
) +
3455 pfkey_sockaddr_pair_size(family
));
3457 kma
= skb_put_zero(skb
, size_req
);
3458 kma
->sadb_x_kmaddress_len
= size_req
/ 8;
3459 kma
->sadb_x_kmaddress_exttype
= SADB_X_EXT_KMADDRESS
;
3460 kma
->sadb_x_kmaddress_reserved
= k
->reserved
;
3462 sa
= (u8
*)(kma
+ 1);
3463 if (!pfkey_sockaddr_fill(&k
->local
, 0, (struct sockaddr
*)sa
, family
) ||
3464 !pfkey_sockaddr_fill(&k
->remote
, 0, (struct sockaddr
*)(sa
+socklen
), family
))
3470 static int set_ipsecrequest(struct sk_buff
*skb
,
3471 uint8_t proto
, uint8_t mode
, int level
,
3472 uint32_t reqid
, uint8_t family
,
3473 const xfrm_address_t
*src
, const xfrm_address_t
*dst
)
3475 struct sadb_x_ipsecrequest
*rq
;
3477 int socklen
= pfkey_sockaddr_len(family
);
3480 size_req
= sizeof(struct sadb_x_ipsecrequest
) +
3481 pfkey_sockaddr_pair_size(family
);
3483 rq
= skb_put_zero(skb
, size_req
);
3484 rq
->sadb_x_ipsecrequest_len
= size_req
;
3485 rq
->sadb_x_ipsecrequest_proto
= proto
;
3486 rq
->sadb_x_ipsecrequest_mode
= mode
;
3487 rq
->sadb_x_ipsecrequest_level
= level
;
3488 rq
->sadb_x_ipsecrequest_reqid
= reqid
;
3490 sa
= (u8
*) (rq
+ 1);
3491 if (!pfkey_sockaddr_fill(src
, 0, (struct sockaddr
*)sa
, family
) ||
3492 !pfkey_sockaddr_fill(dst
, 0, (struct sockaddr
*)(sa
+ socklen
), family
))
3499 #ifdef CONFIG_NET_KEY_MIGRATE
3500 static int pfkey_send_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
3501 const struct xfrm_migrate
*m
, int num_bundles
,
3502 const struct xfrm_kmaddress
*k
,
3503 const struct xfrm_encap_tmpl
*encap
)
3509 struct sk_buff
*skb
;
3510 struct sadb_msg
*hdr
;
3511 struct sadb_x_policy
*pol
;
3512 const struct xfrm_migrate
*mp
;
3514 if (type
!= XFRM_POLICY_TYPE_MAIN
)
3517 if (num_bundles
<= 0 || num_bundles
> XFRM_MAX_DEPTH
)
3521 /* addresses for KM */
3522 size
+= PFKEY_ALIGN8(sizeof(struct sadb_x_kmaddress
) +
3523 pfkey_sockaddr_pair_size(k
->family
));
3527 sasize_sel
= pfkey_sockaddr_size(sel
->family
);
3530 size
+= (sizeof(struct sadb_address
) + sasize_sel
) * 2;
3533 size_pol
+= sizeof(struct sadb_x_policy
);
3536 for (i
= 0, mp
= m
; i
< num_bundles
; i
++, mp
++) {
3537 /* old locator pair */
3538 size_pol
+= sizeof(struct sadb_x_ipsecrequest
) +
3539 pfkey_sockaddr_pair_size(mp
->old_family
);
3540 /* new locator pair */
3541 size_pol
+= sizeof(struct sadb_x_ipsecrequest
) +
3542 pfkey_sockaddr_pair_size(mp
->new_family
);
3545 size
+= sizeof(struct sadb_msg
) + size_pol
;
3548 skb
= alloc_skb(size
, GFP_ATOMIC
);
3552 hdr
= skb_put(skb
, sizeof(struct sadb_msg
));
3553 hdr
->sadb_msg_version
= PF_KEY_V2
;
3554 hdr
->sadb_msg_type
= SADB_X_MIGRATE
;
3555 hdr
->sadb_msg_satype
= pfkey_proto2satype(m
->proto
);
3556 hdr
->sadb_msg_len
= size
/ 8;
3557 hdr
->sadb_msg_errno
= 0;
3558 hdr
->sadb_msg_reserved
= 0;
3559 hdr
->sadb_msg_seq
= 0;
3560 hdr
->sadb_msg_pid
= 0;
3562 /* Addresses to be used by KM for negotiation, if ext is available */
3563 if (k
!= NULL
&& (set_sadb_kmaddress(skb
, k
) < 0))
3567 set_sadb_address(skb
, sasize_sel
, SADB_EXT_ADDRESS_SRC
, sel
);
3570 set_sadb_address(skb
, sasize_sel
, SADB_EXT_ADDRESS_DST
, sel
);
3572 /* policy information */
3573 pol
= skb_put(skb
, sizeof(struct sadb_x_policy
));
3574 pol
->sadb_x_policy_len
= size_pol
/ 8;
3575 pol
->sadb_x_policy_exttype
= SADB_X_EXT_POLICY
;
3576 pol
->sadb_x_policy_type
= IPSEC_POLICY_IPSEC
;
3577 pol
->sadb_x_policy_dir
= dir
+ 1;
3578 pol
->sadb_x_policy_reserved
= 0;
3579 pol
->sadb_x_policy_id
= 0;
3580 pol
->sadb_x_policy_priority
= 0;
3582 for (i
= 0, mp
= m
; i
< num_bundles
; i
++, mp
++) {
3583 /* old ipsecrequest */
3584 int mode
= pfkey_mode_from_xfrm(mp
->mode
);
3587 if (set_ipsecrequest(skb
, mp
->proto
, mode
,
3588 (mp
->reqid
? IPSEC_LEVEL_UNIQUE
: IPSEC_LEVEL_REQUIRE
),
3589 mp
->reqid
, mp
->old_family
,
3590 &mp
->old_saddr
, &mp
->old_daddr
) < 0)
3593 /* new ipsecrequest */
3594 if (set_ipsecrequest(skb
, mp
->proto
, mode
,
3595 (mp
->reqid
? IPSEC_LEVEL_UNIQUE
: IPSEC_LEVEL_REQUIRE
),
3596 mp
->reqid
, mp
->new_family
,
3597 &mp
->new_saddr
, &mp
->new_daddr
) < 0)
3601 /* broadcast migrate message to sockets */
3602 pfkey_broadcast(skb
, BROADCAST_ALL
, NULL
, &init_net
);
3611 static int pfkey_send_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
3612 const struct xfrm_migrate
*m
, int num_bundles
,
3613 const struct xfrm_kmaddress
*k
,
3614 const struct xfrm_encap_tmpl
*encap
)
3616 return -ENOPROTOOPT
;
3620 static int pfkey_sendmsg(struct socket
*sock
, struct msghdr
*msg
, size_t len
)
3622 struct sock
*sk
= sock
->sk
;
3623 struct sk_buff
*skb
= NULL
;
3624 struct sadb_msg
*hdr
= NULL
;
3626 struct net
*net
= sock_net(sk
);
3629 if (msg
->msg_flags
& MSG_OOB
)
3633 if ((unsigned int)len
> sk
->sk_sndbuf
- 32)
3637 skb
= alloc_skb(len
, GFP_KERNEL
);
3642 if (memcpy_from_msg(skb_put(skb
,len
), msg
, len
))
3645 hdr
= pfkey_get_base_msg(skb
, &err
);
3649 mutex_lock(&net
->xfrm
.xfrm_cfg_mutex
);
3650 err
= pfkey_process(sk
, skb
, hdr
);
3651 mutex_unlock(&net
->xfrm
.xfrm_cfg_mutex
);
3654 if (err
&& hdr
&& pfkey_error(hdr
, err
, sk
) == 0)
3661 static int pfkey_recvmsg(struct socket
*sock
, struct msghdr
*msg
, size_t len
,
3664 struct sock
*sk
= sock
->sk
;
3665 struct pfkey_sock
*pfk
= pfkey_sk(sk
);
3666 struct sk_buff
*skb
;
3670 if (flags
& ~(MSG_PEEK
|MSG_DONTWAIT
|MSG_TRUNC
|MSG_CMSG_COMPAT
))
3673 skb
= skb_recv_datagram(sk
, flags
, flags
& MSG_DONTWAIT
, &err
);
3679 msg
->msg_flags
|= MSG_TRUNC
;
3683 skb_reset_transport_header(skb
);
3684 err
= skb_copy_datagram_msg(skb
, 0, msg
, copied
);
3688 sock_recv_ts_and_drops(msg
, sk
, skb
);
3690 err
= (flags
& MSG_TRUNC
) ? skb
->len
: copied
;
3692 if (pfk
->dump
.dump
!= NULL
&&
3693 3 * atomic_read(&sk
->sk_rmem_alloc
) <= sk
->sk_rcvbuf
)
3697 skb_free_datagram(sk
, skb
);
3702 static const struct proto_ops pfkey_ops
= {
3704 .owner
= THIS_MODULE
,
3705 /* Operations that make no sense on pfkey sockets. */
3706 .bind
= sock_no_bind
,
3707 .connect
= sock_no_connect
,
3708 .socketpair
= sock_no_socketpair
,
3709 .accept
= sock_no_accept
,
3710 .getname
= sock_no_getname
,
3711 .ioctl
= sock_no_ioctl
,
3712 .listen
= sock_no_listen
,
3713 .shutdown
= sock_no_shutdown
,
3714 .setsockopt
= sock_no_setsockopt
,
3715 .getsockopt
= sock_no_getsockopt
,
3716 .mmap
= sock_no_mmap
,
3717 .sendpage
= sock_no_sendpage
,
3719 /* Now the operations that really occur. */
3720 .release
= pfkey_release
,
3721 .poll
= datagram_poll
,
3722 .sendmsg
= pfkey_sendmsg
,
3723 .recvmsg
= pfkey_recvmsg
,
3726 static const struct net_proto_family pfkey_family_ops
= {
3728 .create
= pfkey_create
,
3729 .owner
= THIS_MODULE
,
3732 #ifdef CONFIG_PROC_FS
3733 static int pfkey_seq_show(struct seq_file
*f
, void *v
)
3735 struct sock
*s
= sk_entry(v
);
3737 if (v
== SEQ_START_TOKEN
)
3738 seq_printf(f
,"sk RefCnt Rmem Wmem User Inode\n");
3740 seq_printf(f
, "%pK %-6d %-6u %-6u %-6u %-6lu\n",
3742 refcount_read(&s
->sk_refcnt
),
3743 sk_rmem_alloc_get(s
),
3744 sk_wmem_alloc_get(s
),
3745 from_kuid_munged(seq_user_ns(f
), sock_i_uid(s
)),
3751 static void *pfkey_seq_start(struct seq_file
*f
, loff_t
*ppos
)
3754 struct net
*net
= seq_file_net(f
);
3755 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
3758 return seq_hlist_start_head_rcu(&net_pfkey
->table
, *ppos
);
3761 static void *pfkey_seq_next(struct seq_file
*f
, void *v
, loff_t
*ppos
)
3763 struct net
*net
= seq_file_net(f
);
3764 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
3766 return seq_hlist_next_rcu(v
, &net_pfkey
->table
, ppos
);
3769 static void pfkey_seq_stop(struct seq_file
*f
, void *v
)
3775 static const struct seq_operations pfkey_seq_ops
= {
3776 .start
= pfkey_seq_start
,
3777 .next
= pfkey_seq_next
,
3778 .stop
= pfkey_seq_stop
,
3779 .show
= pfkey_seq_show
,
3782 static int pfkey_seq_open(struct inode
*inode
, struct file
*file
)
3784 return seq_open_net(inode
, file
, &pfkey_seq_ops
,
3785 sizeof(struct seq_net_private
));
3788 static const struct file_operations pfkey_proc_ops
= {
3789 .open
= pfkey_seq_open
,
3791 .llseek
= seq_lseek
,
3792 .release
= seq_release_net
,
3795 static int __net_init
pfkey_init_proc(struct net
*net
)
3797 struct proc_dir_entry
*e
;
3799 e
= proc_create("pfkey", 0, net
->proc_net
, &pfkey_proc_ops
);
3806 static void __net_exit
pfkey_exit_proc(struct net
*net
)
3808 remove_proc_entry("pfkey", net
->proc_net
);
3811 static inline int pfkey_init_proc(struct net
*net
)
3816 static inline void pfkey_exit_proc(struct net
*net
)
3821 static struct xfrm_mgr pfkeyv2_mgr
=
3823 .notify
= pfkey_send_notify
,
3824 .acquire
= pfkey_send_acquire
,
3825 .compile_policy
= pfkey_compile_policy
,
3826 .new_mapping
= pfkey_send_new_mapping
,
3827 .notify_policy
= pfkey_send_policy_notify
,
3828 .migrate
= pfkey_send_migrate
,
3829 .is_alive
= pfkey_is_alive
,
3832 static int __net_init
pfkey_net_init(struct net
*net
)
3834 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
3837 INIT_HLIST_HEAD(&net_pfkey
->table
);
3838 atomic_set(&net_pfkey
->socks_nr
, 0);
3840 rv
= pfkey_init_proc(net
);
3845 static void __net_exit
pfkey_net_exit(struct net
*net
)
3847 struct netns_pfkey
*net_pfkey
= net_generic(net
, pfkey_net_id
);
3849 pfkey_exit_proc(net
);
3850 BUG_ON(!hlist_empty(&net_pfkey
->table
));
3853 static struct pernet_operations pfkey_net_ops
= {
3854 .init
= pfkey_net_init
,
3855 .exit
= pfkey_net_exit
,
3856 .id
= &pfkey_net_id
,
3857 .size
= sizeof(struct netns_pfkey
),
3860 static void __exit
ipsec_pfkey_exit(void)
3862 xfrm_unregister_km(&pfkeyv2_mgr
);
3863 sock_unregister(PF_KEY
);
3864 unregister_pernet_subsys(&pfkey_net_ops
);
3865 proto_unregister(&key_proto
);
3868 static int __init
ipsec_pfkey_init(void)
3870 int err
= proto_register(&key_proto
, 0);
3875 err
= register_pernet_subsys(&pfkey_net_ops
);
3877 goto out_unregister_key_proto
;
3878 err
= sock_register(&pfkey_family_ops
);
3880 goto out_unregister_pernet
;
3881 err
= xfrm_register_km(&pfkeyv2_mgr
);
3883 goto out_sock_unregister
;
3887 out_sock_unregister
:
3888 sock_unregister(PF_KEY
);
3889 out_unregister_pernet
:
3890 unregister_pernet_subsys(&pfkey_net_ops
);
3891 out_unregister_key_proto
:
3892 proto_unregister(&key_proto
);
3896 module_init(ipsec_pfkey_init
);
3897 module_exit(ipsec_pfkey_exit
);
3898 MODULE_LICENSE("GPL");
3899 MODULE_ALIAS_NETPROTO(PF_KEY
);