1 /* xfrm_user.c: User interface to configure xfrm engine.
3 * Copyright (C) 2002 David S. Miller (davem@redhat.com)
7 * Kazunori MIYAZAWA @USAGI
8 * Kunihiro Ishiguro <kunihiro@ipinfusion.com>
13 #include <linux/crypto.h>
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/types.h>
17 #include <linux/slab.h>
18 #include <linux/socket.h>
19 #include <linux/string.h>
20 #include <linux/net.h>
21 #include <linux/skbuff.h>
22 #include <linux/pfkeyv2.h>
23 #include <linux/ipsec.h>
24 #include <linux/init.h>
25 #include <linux/security.h>
28 #include <net/netlink.h>
30 #include <asm/uaccess.h>
31 #if IS_ENABLED(CONFIG_IPV6)
32 #include <linux/in6.h>
35 static int verify_one_alg(struct nlattr
**attrs
, enum xfrm_attr_type_t type
)
37 struct nlattr
*rt
= attrs
[type
];
38 struct xfrm_algo
*algp
;
44 if (nla_len(rt
) < xfrm_alg_len(algp
))
57 algp
->alg_name
[CRYPTO_MAX_ALG_NAME
- 1] = '\0';
61 static int verify_auth_trunc(struct nlattr
**attrs
)
63 struct nlattr
*rt
= attrs
[XFRMA_ALG_AUTH_TRUNC
];
64 struct xfrm_algo_auth
*algp
;
70 if (nla_len(rt
) < xfrm_alg_auth_len(algp
))
73 algp
->alg_name
[CRYPTO_MAX_ALG_NAME
- 1] = '\0';
77 static int verify_aead(struct nlattr
**attrs
)
79 struct nlattr
*rt
= attrs
[XFRMA_ALG_AEAD
];
80 struct xfrm_algo_aead
*algp
;
86 if (nla_len(rt
) < aead_len(algp
))
89 algp
->alg_name
[CRYPTO_MAX_ALG_NAME
- 1] = '\0';
93 static void verify_one_addr(struct nlattr
**attrs
, enum xfrm_attr_type_t type
,
94 xfrm_address_t
**addrp
)
96 struct nlattr
*rt
= attrs
[type
];
99 *addrp
= nla_data(rt
);
102 static inline int verify_sec_ctx_len(struct nlattr
**attrs
)
104 struct nlattr
*rt
= attrs
[XFRMA_SEC_CTX
];
105 struct xfrm_user_sec_ctx
*uctx
;
111 if (uctx
->len
!= (sizeof(struct xfrm_user_sec_ctx
) + uctx
->ctx_len
))
117 static inline int verify_replay(struct xfrm_usersa_info
*p
,
118 struct nlattr
**attrs
)
120 struct nlattr
*rt
= attrs
[XFRMA_REPLAY_ESN_VAL
];
121 struct xfrm_replay_state_esn
*rs
;
123 if (p
->flags
& XFRM_STATE_ESN
) {
129 if (rs
->bmp_len
> XFRMA_REPLAY_ESN_MAX
/ sizeof(rs
->bmp
[0]) / 8)
132 if (nla_len(rt
) < xfrm_replay_state_esn_len(rs
) &&
133 nla_len(rt
) != sizeof(*rs
))
140 /* As only ESP and AH support ESN feature. */
141 if ((p
->id
.proto
!= IPPROTO_ESP
) && (p
->id
.proto
!= IPPROTO_AH
))
144 if (p
->replay_window
!= 0)
150 static int verify_newsa_info(struct xfrm_usersa_info
*p
,
151 struct nlattr
**attrs
)
161 #if IS_ENABLED(CONFIG_IPV6)
173 switch (p
->id
.proto
) {
175 if ((!attrs
[XFRMA_ALG_AUTH
] &&
176 !attrs
[XFRMA_ALG_AUTH_TRUNC
]) ||
177 attrs
[XFRMA_ALG_AEAD
] ||
178 attrs
[XFRMA_ALG_CRYPT
] ||
179 attrs
[XFRMA_ALG_COMP
] ||
185 if (attrs
[XFRMA_ALG_COMP
])
187 if (!attrs
[XFRMA_ALG_AUTH
] &&
188 !attrs
[XFRMA_ALG_AUTH_TRUNC
] &&
189 !attrs
[XFRMA_ALG_CRYPT
] &&
190 !attrs
[XFRMA_ALG_AEAD
])
192 if ((attrs
[XFRMA_ALG_AUTH
] ||
193 attrs
[XFRMA_ALG_AUTH_TRUNC
] ||
194 attrs
[XFRMA_ALG_CRYPT
]) &&
195 attrs
[XFRMA_ALG_AEAD
])
197 if (attrs
[XFRMA_TFCPAD
] &&
198 p
->mode
!= XFRM_MODE_TUNNEL
)
203 if (!attrs
[XFRMA_ALG_COMP
] ||
204 attrs
[XFRMA_ALG_AEAD
] ||
205 attrs
[XFRMA_ALG_AUTH
] ||
206 attrs
[XFRMA_ALG_AUTH_TRUNC
] ||
207 attrs
[XFRMA_ALG_CRYPT
] ||
208 attrs
[XFRMA_TFCPAD
] ||
209 (ntohl(p
->id
.spi
) >= 0x10000))
213 #if IS_ENABLED(CONFIG_IPV6)
214 case IPPROTO_DSTOPTS
:
215 case IPPROTO_ROUTING
:
216 if (attrs
[XFRMA_ALG_COMP
] ||
217 attrs
[XFRMA_ALG_AUTH
] ||
218 attrs
[XFRMA_ALG_AUTH_TRUNC
] ||
219 attrs
[XFRMA_ALG_AEAD
] ||
220 attrs
[XFRMA_ALG_CRYPT
] ||
221 attrs
[XFRMA_ENCAP
] ||
222 attrs
[XFRMA_SEC_CTX
] ||
223 attrs
[XFRMA_TFCPAD
] ||
224 !attrs
[XFRMA_COADDR
])
233 if ((err
= verify_aead(attrs
)))
235 if ((err
= verify_auth_trunc(attrs
)))
237 if ((err
= verify_one_alg(attrs
, XFRMA_ALG_AUTH
)))
239 if ((err
= verify_one_alg(attrs
, XFRMA_ALG_CRYPT
)))
241 if ((err
= verify_one_alg(attrs
, XFRMA_ALG_COMP
)))
243 if ((err
= verify_sec_ctx_len(attrs
)))
245 if ((err
= verify_replay(p
, attrs
)))
250 case XFRM_MODE_TRANSPORT
:
251 case XFRM_MODE_TUNNEL
:
252 case XFRM_MODE_ROUTEOPTIMIZATION
:
266 static int attach_one_algo(struct xfrm_algo
**algpp
, u8
*props
,
267 struct xfrm_algo_desc
*(*get_byname
)(const char *, int),
270 struct xfrm_algo
*p
, *ualg
;
271 struct xfrm_algo_desc
*algo
;
276 ualg
= nla_data(rta
);
278 algo
= get_byname(ualg
->alg_name
, 1);
281 *props
= algo
->desc
.sadb_alg_id
;
283 p
= kmemdup(ualg
, xfrm_alg_len(ualg
), GFP_KERNEL
);
287 strcpy(p
->alg_name
, algo
->name
);
292 static int attach_auth(struct xfrm_algo_auth
**algpp
, u8
*props
,
295 struct xfrm_algo
*ualg
;
296 struct xfrm_algo_auth
*p
;
297 struct xfrm_algo_desc
*algo
;
302 ualg
= nla_data(rta
);
304 algo
= xfrm_aalg_get_byname(ualg
->alg_name
, 1);
307 *props
= algo
->desc
.sadb_alg_id
;
309 p
= kmalloc(sizeof(*p
) + (ualg
->alg_key_len
+ 7) / 8, GFP_KERNEL
);
313 strcpy(p
->alg_name
, algo
->name
);
314 p
->alg_key_len
= ualg
->alg_key_len
;
315 p
->alg_trunc_len
= algo
->uinfo
.auth
.icv_truncbits
;
316 memcpy(p
->alg_key
, ualg
->alg_key
, (ualg
->alg_key_len
+ 7) / 8);
322 static int attach_auth_trunc(struct xfrm_algo_auth
**algpp
, u8
*props
,
325 struct xfrm_algo_auth
*p
, *ualg
;
326 struct xfrm_algo_desc
*algo
;
331 ualg
= nla_data(rta
);
333 algo
= xfrm_aalg_get_byname(ualg
->alg_name
, 1);
336 if ((ualg
->alg_trunc_len
/ 8) > MAX_AH_AUTH_LEN
||
337 ualg
->alg_trunc_len
> algo
->uinfo
.auth
.icv_fullbits
)
339 *props
= algo
->desc
.sadb_alg_id
;
341 p
= kmemdup(ualg
, xfrm_alg_auth_len(ualg
), GFP_KERNEL
);
345 strcpy(p
->alg_name
, algo
->name
);
346 if (!p
->alg_trunc_len
)
347 p
->alg_trunc_len
= algo
->uinfo
.auth
.icv_truncbits
;
353 static int attach_aead(struct xfrm_algo_aead
**algpp
, u8
*props
,
356 struct xfrm_algo_aead
*p
, *ualg
;
357 struct xfrm_algo_desc
*algo
;
362 ualg
= nla_data(rta
);
364 algo
= xfrm_aead_get_byname(ualg
->alg_name
, ualg
->alg_icv_len
, 1);
367 *props
= algo
->desc
.sadb_alg_id
;
369 p
= kmemdup(ualg
, aead_len(ualg
), GFP_KERNEL
);
373 strcpy(p
->alg_name
, algo
->name
);
378 static inline int xfrm_replay_verify_len(struct xfrm_replay_state_esn
*replay_esn
,
381 struct xfrm_replay_state_esn
*up
;
384 if (!replay_esn
|| !rp
)
388 ulen
= xfrm_replay_state_esn_len(up
);
390 if (nla_len(rp
) < ulen
|| xfrm_replay_state_esn_len(replay_esn
) != ulen
)
396 static int xfrm_alloc_replay_state_esn(struct xfrm_replay_state_esn
**replay_esn
,
397 struct xfrm_replay_state_esn
**preplay_esn
,
400 struct xfrm_replay_state_esn
*p
, *pp
, *up
;
407 klen
= xfrm_replay_state_esn_len(up
);
408 ulen
= nla_len(rta
) >= klen
? klen
: sizeof(*up
);
410 p
= kzalloc(klen
, GFP_KERNEL
);
414 pp
= kzalloc(klen
, GFP_KERNEL
);
421 memcpy(pp
, up
, ulen
);
429 static inline int xfrm_user_sec_ctx_size(struct xfrm_sec_ctx
*xfrm_ctx
)
434 len
+= sizeof(struct xfrm_user_sec_ctx
);
435 len
+= xfrm_ctx
->ctx_len
;
440 static void copy_from_user_state(struct xfrm_state
*x
, struct xfrm_usersa_info
*p
)
442 memcpy(&x
->id
, &p
->id
, sizeof(x
->id
));
443 memcpy(&x
->sel
, &p
->sel
, sizeof(x
->sel
));
444 memcpy(&x
->lft
, &p
->lft
, sizeof(x
->lft
));
445 x
->props
.mode
= p
->mode
;
446 x
->props
.replay_window
= min_t(unsigned int, p
->replay_window
,
447 sizeof(x
->replay
.bitmap
) * 8);
448 x
->props
.reqid
= p
->reqid
;
449 x
->props
.family
= p
->family
;
450 memcpy(&x
->props
.saddr
, &p
->saddr
, sizeof(x
->props
.saddr
));
451 x
->props
.flags
= p
->flags
;
453 if (!x
->sel
.family
&& !(p
->flags
& XFRM_STATE_AF_UNSPEC
))
454 x
->sel
.family
= p
->family
;
458 * someday when pfkey also has support, we could have the code
459 * somehow made shareable and move it to xfrm_state.c - JHS
462 static void xfrm_update_ae_params(struct xfrm_state
*x
, struct nlattr
**attrs
,
465 struct nlattr
*rp
= attrs
[XFRMA_REPLAY_VAL
];
466 struct nlattr
*re
= update_esn
? attrs
[XFRMA_REPLAY_ESN_VAL
] : NULL
;
467 struct nlattr
*lt
= attrs
[XFRMA_LTIME_VAL
];
468 struct nlattr
*et
= attrs
[XFRMA_ETIMER_THRESH
];
469 struct nlattr
*rt
= attrs
[XFRMA_REPLAY_THRESH
];
472 struct xfrm_replay_state_esn
*replay_esn
;
473 replay_esn
= nla_data(re
);
474 memcpy(x
->replay_esn
, replay_esn
,
475 xfrm_replay_state_esn_len(replay_esn
));
476 memcpy(x
->preplay_esn
, replay_esn
,
477 xfrm_replay_state_esn_len(replay_esn
));
481 struct xfrm_replay_state
*replay
;
482 replay
= nla_data(rp
);
483 memcpy(&x
->replay
, replay
, sizeof(*replay
));
484 memcpy(&x
->preplay
, replay
, sizeof(*replay
));
488 struct xfrm_lifetime_cur
*ltime
;
489 ltime
= nla_data(lt
);
490 x
->curlft
.bytes
= ltime
->bytes
;
491 x
->curlft
.packets
= ltime
->packets
;
492 x
->curlft
.add_time
= ltime
->add_time
;
493 x
->curlft
.use_time
= ltime
->use_time
;
497 x
->replay_maxage
= nla_get_u32(et
);
500 x
->replay_maxdiff
= nla_get_u32(rt
);
503 static struct xfrm_state
*xfrm_state_construct(struct net
*net
,
504 struct xfrm_usersa_info
*p
,
505 struct nlattr
**attrs
,
508 struct xfrm_state
*x
= xfrm_state_alloc(net
);
514 copy_from_user_state(x
, p
);
516 if (attrs
[XFRMA_SA_EXTRA_FLAGS
])
517 x
->props
.extra_flags
= nla_get_u32(attrs
[XFRMA_SA_EXTRA_FLAGS
]);
519 if ((err
= attach_aead(&x
->aead
, &x
->props
.ealgo
,
520 attrs
[XFRMA_ALG_AEAD
])))
522 if ((err
= attach_auth_trunc(&x
->aalg
, &x
->props
.aalgo
,
523 attrs
[XFRMA_ALG_AUTH_TRUNC
])))
525 if (!x
->props
.aalgo
) {
526 if ((err
= attach_auth(&x
->aalg
, &x
->props
.aalgo
,
527 attrs
[XFRMA_ALG_AUTH
])))
530 if ((err
= attach_one_algo(&x
->ealg
, &x
->props
.ealgo
,
531 xfrm_ealg_get_byname
,
532 attrs
[XFRMA_ALG_CRYPT
])))
534 if ((err
= attach_one_algo(&x
->calg
, &x
->props
.calgo
,
535 xfrm_calg_get_byname
,
536 attrs
[XFRMA_ALG_COMP
])))
539 if (attrs
[XFRMA_ENCAP
]) {
540 x
->encap
= kmemdup(nla_data(attrs
[XFRMA_ENCAP
]),
541 sizeof(*x
->encap
), GFP_KERNEL
);
542 if (x
->encap
== NULL
)
546 if (attrs
[XFRMA_TFCPAD
])
547 x
->tfcpad
= nla_get_u32(attrs
[XFRMA_TFCPAD
]);
549 if (attrs
[XFRMA_COADDR
]) {
550 x
->coaddr
= kmemdup(nla_data(attrs
[XFRMA_COADDR
]),
551 sizeof(*x
->coaddr
), GFP_KERNEL
);
552 if (x
->coaddr
== NULL
)
556 xfrm_mark_get(attrs
, &x
->mark
);
558 err
= __xfrm_init_state(x
, false);
562 if (attrs
[XFRMA_SEC_CTX
] &&
563 security_xfrm_state_alloc(x
, nla_data(attrs
[XFRMA_SEC_CTX
])))
566 if ((err
= xfrm_alloc_replay_state_esn(&x
->replay_esn
, &x
->preplay_esn
,
567 attrs
[XFRMA_REPLAY_ESN_VAL
])))
571 x
->replay_maxdiff
= net
->xfrm
.sysctl_aevent_rseqth
;
572 /* sysctl_xfrm_aevent_etime is in 100ms units */
573 x
->replay_maxage
= (net
->xfrm
.sysctl_aevent_etime
*HZ
)/XFRM_AE_ETH_M
;
575 if ((err
= xfrm_init_replay(x
)))
578 /* override default values from above */
579 xfrm_update_ae_params(x
, attrs
, 0);
584 x
->km
.state
= XFRM_STATE_DEAD
;
591 static int xfrm_add_sa(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
592 struct nlattr
**attrs
)
594 struct net
*net
= sock_net(skb
->sk
);
595 struct xfrm_usersa_info
*p
= nlmsg_data(nlh
);
596 struct xfrm_state
*x
;
600 err
= verify_newsa_info(p
, attrs
);
604 x
= xfrm_state_construct(net
, p
, attrs
, &err
);
609 if (nlh
->nlmsg_type
== XFRM_MSG_NEWSA
)
610 err
= xfrm_state_add(x
);
612 err
= xfrm_state_update(x
);
614 xfrm_audit_state_add(x
, err
? 0 : 1, true);
617 x
->km
.state
= XFRM_STATE_DEAD
;
622 c
.seq
= nlh
->nlmsg_seq
;
623 c
.portid
= nlh
->nlmsg_pid
;
624 c
.event
= nlh
->nlmsg_type
;
626 km_state_notify(x
, &c
);
632 static struct xfrm_state
*xfrm_user_state_lookup(struct net
*net
,
633 struct xfrm_usersa_id
*p
,
634 struct nlattr
**attrs
,
637 struct xfrm_state
*x
= NULL
;
640 u32 mark
= xfrm_mark_get(attrs
, &m
);
642 if (xfrm_id_proto_match(p
->proto
, IPSEC_PROTO_ANY
)) {
644 x
= xfrm_state_lookup(net
, mark
, &p
->daddr
, p
->spi
, p
->proto
, p
->family
);
646 xfrm_address_t
*saddr
= NULL
;
648 verify_one_addr(attrs
, XFRMA_SRCADDR
, &saddr
);
655 x
= xfrm_state_lookup_byaddr(net
, mark
,
657 p
->proto
, p
->family
);
666 static int xfrm_del_sa(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
667 struct nlattr
**attrs
)
669 struct net
*net
= sock_net(skb
->sk
);
670 struct xfrm_state
*x
;
673 struct xfrm_usersa_id
*p
= nlmsg_data(nlh
);
675 x
= xfrm_user_state_lookup(net
, p
, attrs
, &err
);
679 if ((err
= security_xfrm_state_delete(x
)) != 0)
682 if (xfrm_state_kern(x
)) {
687 err
= xfrm_state_delete(x
);
692 c
.seq
= nlh
->nlmsg_seq
;
693 c
.portid
= nlh
->nlmsg_pid
;
694 c
.event
= nlh
->nlmsg_type
;
695 km_state_notify(x
, &c
);
698 xfrm_audit_state_delete(x
, err
? 0 : 1, true);
703 static void copy_to_user_state(struct xfrm_state
*x
, struct xfrm_usersa_info
*p
)
705 memset(p
, 0, sizeof(*p
));
706 memcpy(&p
->id
, &x
->id
, sizeof(p
->id
));
707 memcpy(&p
->sel
, &x
->sel
, sizeof(p
->sel
));
708 memcpy(&p
->lft
, &x
->lft
, sizeof(p
->lft
));
709 memcpy(&p
->curlft
, &x
->curlft
, sizeof(p
->curlft
));
710 memcpy(&p
->stats
, &x
->stats
, sizeof(p
->stats
));
711 memcpy(&p
->saddr
, &x
->props
.saddr
, sizeof(p
->saddr
));
712 p
->mode
= x
->props
.mode
;
713 p
->replay_window
= x
->props
.replay_window
;
714 p
->reqid
= x
->props
.reqid
;
715 p
->family
= x
->props
.family
;
716 p
->flags
= x
->props
.flags
;
720 struct xfrm_dump_info
{
721 struct sk_buff
*in_skb
;
722 struct sk_buff
*out_skb
;
727 static int copy_sec_ctx(struct xfrm_sec_ctx
*s
, struct sk_buff
*skb
)
729 struct xfrm_user_sec_ctx
*uctx
;
731 int ctx_size
= sizeof(*uctx
) + s
->ctx_len
;
733 attr
= nla_reserve(skb
, XFRMA_SEC_CTX
, ctx_size
);
737 uctx
= nla_data(attr
);
738 uctx
->exttype
= XFRMA_SEC_CTX
;
739 uctx
->len
= ctx_size
;
740 uctx
->ctx_doi
= s
->ctx_doi
;
741 uctx
->ctx_alg
= s
->ctx_alg
;
742 uctx
->ctx_len
= s
->ctx_len
;
743 memcpy(uctx
+ 1, s
->ctx_str
, s
->ctx_len
);
748 static int copy_to_user_auth(struct xfrm_algo_auth
*auth
, struct sk_buff
*skb
)
750 struct xfrm_algo
*algo
;
753 nla
= nla_reserve(skb
, XFRMA_ALG_AUTH
,
754 sizeof(*algo
) + (auth
->alg_key_len
+ 7) / 8);
758 algo
= nla_data(nla
);
759 strncpy(algo
->alg_name
, auth
->alg_name
, sizeof(algo
->alg_name
));
760 memcpy(algo
->alg_key
, auth
->alg_key
, (auth
->alg_key_len
+ 7) / 8);
761 algo
->alg_key_len
= auth
->alg_key_len
;
766 /* Don't change this without updating xfrm_sa_len! */
767 static int copy_to_user_state_extra(struct xfrm_state
*x
,
768 struct xfrm_usersa_info
*p
,
773 copy_to_user_state(x
, p
);
775 if (x
->props
.extra_flags
) {
776 ret
= nla_put_u32(skb
, XFRMA_SA_EXTRA_FLAGS
,
777 x
->props
.extra_flags
);
783 ret
= nla_put(skb
, XFRMA_COADDR
, sizeof(*x
->coaddr
), x
->coaddr
);
788 ret
= nla_put_u64(skb
, XFRMA_LASTUSED
, x
->lastused
);
793 ret
= nla_put(skb
, XFRMA_ALG_AEAD
, aead_len(x
->aead
), x
->aead
);
798 ret
= copy_to_user_auth(x
->aalg
, skb
);
800 ret
= nla_put(skb
, XFRMA_ALG_AUTH_TRUNC
,
801 xfrm_alg_auth_len(x
->aalg
), x
->aalg
);
806 ret
= nla_put(skb
, XFRMA_ALG_CRYPT
, xfrm_alg_len(x
->ealg
), x
->ealg
);
811 ret
= nla_put(skb
, XFRMA_ALG_COMP
, sizeof(*(x
->calg
)), x
->calg
);
816 ret
= nla_put(skb
, XFRMA_ENCAP
, sizeof(*x
->encap
), x
->encap
);
821 ret
= nla_put_u32(skb
, XFRMA_TFCPAD
, x
->tfcpad
);
825 ret
= xfrm_mark_put(skb
, &x
->mark
);
829 ret
= nla_put(skb
, XFRMA_REPLAY_ESN_VAL
,
830 xfrm_replay_state_esn_len(x
->replay_esn
),
836 ret
= copy_sec_ctx(x
->security
, skb
);
841 static int dump_one_state(struct xfrm_state
*x
, int count
, void *ptr
)
843 struct xfrm_dump_info
*sp
= ptr
;
844 struct sk_buff
*in_skb
= sp
->in_skb
;
845 struct sk_buff
*skb
= sp
->out_skb
;
846 struct xfrm_usersa_info
*p
;
847 struct nlmsghdr
*nlh
;
850 nlh
= nlmsg_put(skb
, NETLINK_CB(in_skb
).portid
, sp
->nlmsg_seq
,
851 XFRM_MSG_NEWSA
, sizeof(*p
), sp
->nlmsg_flags
);
857 err
= copy_to_user_state_extra(x
, p
, skb
);
859 nlmsg_cancel(skb
, nlh
);
866 static int xfrm_dump_sa_done(struct netlink_callback
*cb
)
868 struct xfrm_state_walk
*walk
= (struct xfrm_state_walk
*) &cb
->args
[1];
869 struct sock
*sk
= cb
->skb
->sk
;
870 struct net
*net
= sock_net(sk
);
872 xfrm_state_walk_done(walk
, net
);
876 static const struct nla_policy xfrma_policy
[XFRMA_MAX
+1];
877 static int xfrm_dump_sa(struct sk_buff
*skb
, struct netlink_callback
*cb
)
879 struct net
*net
= sock_net(skb
->sk
);
880 struct xfrm_state_walk
*walk
= (struct xfrm_state_walk
*) &cb
->args
[1];
881 struct xfrm_dump_info info
;
883 BUILD_BUG_ON(sizeof(struct xfrm_state_walk
) >
884 sizeof(cb
->args
) - sizeof(cb
->args
[0]));
886 info
.in_skb
= cb
->skb
;
888 info
.nlmsg_seq
= cb
->nlh
->nlmsg_seq
;
889 info
.nlmsg_flags
= NLM_F_MULTI
;
892 struct nlattr
*attrs
[XFRMA_MAX
+1];
893 struct xfrm_address_filter
*filter
= NULL
;
899 err
= nlmsg_parse(cb
->nlh
, 0, attrs
, XFRMA_MAX
,
904 if (attrs
[XFRMA_ADDRESS_FILTER
]) {
905 filter
= kmalloc(sizeof(*filter
), GFP_KERNEL
);
909 memcpy(filter
, nla_data(attrs
[XFRMA_ADDRESS_FILTER
]),
913 if (attrs
[XFRMA_PROTO
])
914 proto
= nla_get_u8(attrs
[XFRMA_PROTO
]);
916 xfrm_state_walk_init(walk
, proto
, filter
);
919 (void) xfrm_state_walk(net
, walk
, dump_one_state
, &info
);
924 static struct sk_buff
*xfrm_state_netlink(struct sk_buff
*in_skb
,
925 struct xfrm_state
*x
, u32 seq
)
927 struct xfrm_dump_info info
;
931 skb
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_ATOMIC
);
933 return ERR_PTR(-ENOMEM
);
935 info
.in_skb
= in_skb
;
937 info
.nlmsg_seq
= seq
;
938 info
.nlmsg_flags
= 0;
940 err
= dump_one_state(x
, 0, &info
);
949 /* A wrapper for nlmsg_multicast() checking that nlsk is still available.
950 * Must be called with RCU read lock.
952 static inline int xfrm_nlmsg_multicast(struct net
*net
, struct sk_buff
*skb
,
953 u32 pid
, unsigned int group
)
955 struct sock
*nlsk
= rcu_dereference(net
->xfrm
.nlsk
);
958 return nlmsg_multicast(nlsk
, skb
, pid
, group
, GFP_ATOMIC
);
963 static inline size_t xfrm_spdinfo_msgsize(void)
965 return NLMSG_ALIGN(4)
966 + nla_total_size(sizeof(struct xfrmu_spdinfo
))
967 + nla_total_size(sizeof(struct xfrmu_spdhinfo
));
970 static int build_spdinfo(struct sk_buff
*skb
, struct net
*net
,
971 u32 portid
, u32 seq
, u32 flags
)
973 struct xfrmk_spdinfo si
;
974 struct xfrmu_spdinfo spc
;
975 struct xfrmu_spdhinfo sph
;
976 struct nlmsghdr
*nlh
;
980 nlh
= nlmsg_put(skb
, portid
, seq
, XFRM_MSG_NEWSPDINFO
, sizeof(u32
), 0);
981 if (nlh
== NULL
) /* shouldn't really happen ... */
986 xfrm_spd_getinfo(net
, &si
);
987 spc
.incnt
= si
.incnt
;
988 spc
.outcnt
= si
.outcnt
;
989 spc
.fwdcnt
= si
.fwdcnt
;
990 spc
.inscnt
= si
.inscnt
;
991 spc
.outscnt
= si
.outscnt
;
992 spc
.fwdscnt
= si
.fwdscnt
;
993 sph
.spdhcnt
= si
.spdhcnt
;
994 sph
.spdhmcnt
= si
.spdhmcnt
;
996 err
= nla_put(skb
, XFRMA_SPD_INFO
, sizeof(spc
), &spc
);
998 err
= nla_put(skb
, XFRMA_SPD_HINFO
, sizeof(sph
), &sph
);
1000 nlmsg_cancel(skb
, nlh
);
1004 return nlmsg_end(skb
, nlh
);
1007 static int xfrm_get_spdinfo(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1008 struct nlattr
**attrs
)
1010 struct net
*net
= sock_net(skb
->sk
);
1011 struct sk_buff
*r_skb
;
1012 u32
*flags
= nlmsg_data(nlh
);
1013 u32 sportid
= NETLINK_CB(skb
).portid
;
1014 u32 seq
= nlh
->nlmsg_seq
;
1016 r_skb
= nlmsg_new(xfrm_spdinfo_msgsize(), GFP_ATOMIC
);
1020 if (build_spdinfo(r_skb
, net
, sportid
, seq
, *flags
) < 0)
1023 return nlmsg_unicast(net
->xfrm
.nlsk
, r_skb
, sportid
);
1026 static inline size_t xfrm_sadinfo_msgsize(void)
1028 return NLMSG_ALIGN(4)
1029 + nla_total_size(sizeof(struct xfrmu_sadhinfo
))
1030 + nla_total_size(4); /* XFRMA_SAD_CNT */
1033 static int build_sadinfo(struct sk_buff
*skb
, struct net
*net
,
1034 u32 portid
, u32 seq
, u32 flags
)
1036 struct xfrmk_sadinfo si
;
1037 struct xfrmu_sadhinfo sh
;
1038 struct nlmsghdr
*nlh
;
1042 nlh
= nlmsg_put(skb
, portid
, seq
, XFRM_MSG_NEWSADINFO
, sizeof(u32
), 0);
1043 if (nlh
== NULL
) /* shouldn't really happen ... */
1046 f
= nlmsg_data(nlh
);
1048 xfrm_sad_getinfo(net
, &si
);
1050 sh
.sadhmcnt
= si
.sadhmcnt
;
1051 sh
.sadhcnt
= si
.sadhcnt
;
1053 err
= nla_put_u32(skb
, XFRMA_SAD_CNT
, si
.sadcnt
);
1055 err
= nla_put(skb
, XFRMA_SAD_HINFO
, sizeof(sh
), &sh
);
1057 nlmsg_cancel(skb
, nlh
);
1061 return nlmsg_end(skb
, nlh
);
1064 static int xfrm_get_sadinfo(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1065 struct nlattr
**attrs
)
1067 struct net
*net
= sock_net(skb
->sk
);
1068 struct sk_buff
*r_skb
;
1069 u32
*flags
= nlmsg_data(nlh
);
1070 u32 sportid
= NETLINK_CB(skb
).portid
;
1071 u32 seq
= nlh
->nlmsg_seq
;
1073 r_skb
= nlmsg_new(xfrm_sadinfo_msgsize(), GFP_ATOMIC
);
1077 if (build_sadinfo(r_skb
, net
, sportid
, seq
, *flags
) < 0)
1080 return nlmsg_unicast(net
->xfrm
.nlsk
, r_skb
, sportid
);
1083 static int xfrm_get_sa(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1084 struct nlattr
**attrs
)
1086 struct net
*net
= sock_net(skb
->sk
);
1087 struct xfrm_usersa_id
*p
= nlmsg_data(nlh
);
1088 struct xfrm_state
*x
;
1089 struct sk_buff
*resp_skb
;
1092 x
= xfrm_user_state_lookup(net
, p
, attrs
, &err
);
1096 resp_skb
= xfrm_state_netlink(skb
, x
, nlh
->nlmsg_seq
);
1097 if (IS_ERR(resp_skb
)) {
1098 err
= PTR_ERR(resp_skb
);
1100 err
= nlmsg_unicast(net
->xfrm
.nlsk
, resp_skb
, NETLINK_CB(skb
).portid
);
1107 static int xfrm_alloc_userspi(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1108 struct nlattr
**attrs
)
1110 struct net
*net
= sock_net(skb
->sk
);
1111 struct xfrm_state
*x
;
1112 struct xfrm_userspi_info
*p
;
1113 struct sk_buff
*resp_skb
;
1114 xfrm_address_t
*daddr
;
1120 p
= nlmsg_data(nlh
);
1121 err
= verify_spi_info(p
->info
.id
.proto
, p
->min
, p
->max
);
1125 family
= p
->info
.family
;
1126 daddr
= &p
->info
.id
.daddr
;
1130 mark
= xfrm_mark_get(attrs
, &m
);
1132 x
= xfrm_find_acq_byseq(net
, mark
, p
->info
.seq
);
1133 if (x
&& !xfrm_addr_equal(&x
->id
.daddr
, daddr
, family
)) {
1140 x
= xfrm_find_acq(net
, &m
, p
->info
.mode
, p
->info
.reqid
,
1141 p
->info
.id
.proto
, daddr
,
1148 err
= xfrm_alloc_spi(x
, p
->min
, p
->max
);
1152 resp_skb
= xfrm_state_netlink(skb
, x
, nlh
->nlmsg_seq
);
1153 if (IS_ERR(resp_skb
)) {
1154 err
= PTR_ERR(resp_skb
);
1158 err
= nlmsg_unicast(net
->xfrm
.nlsk
, resp_skb
, NETLINK_CB(skb
).portid
);
1166 static int verify_policy_dir(u8 dir
)
1169 case XFRM_POLICY_IN
:
1170 case XFRM_POLICY_OUT
:
1171 case XFRM_POLICY_FWD
:
1181 static int verify_policy_type(u8 type
)
1184 case XFRM_POLICY_TYPE_MAIN
:
1185 #ifdef CONFIG_XFRM_SUB_POLICY
1186 case XFRM_POLICY_TYPE_SUB
:
1197 static int verify_newpolicy_info(struct xfrm_userpolicy_info
*p
)
1202 case XFRM_SHARE_ANY
:
1203 case XFRM_SHARE_SESSION
:
1204 case XFRM_SHARE_USER
:
1205 case XFRM_SHARE_UNIQUE
:
1212 switch (p
->action
) {
1213 case XFRM_POLICY_ALLOW
:
1214 case XFRM_POLICY_BLOCK
:
1221 switch (p
->sel
.family
) {
1226 #if IS_ENABLED(CONFIG_IPV6)
1229 return -EAFNOSUPPORT
;
1236 ret
= verify_policy_dir(p
->dir
);
1239 if (p
->index
&& ((p
->index
& XFRM_POLICY_MAX
) != p
->dir
))
1245 static int copy_from_user_sec_ctx(struct xfrm_policy
*pol
, struct nlattr
**attrs
)
1247 struct nlattr
*rt
= attrs
[XFRMA_SEC_CTX
];
1248 struct xfrm_user_sec_ctx
*uctx
;
1253 uctx
= nla_data(rt
);
1254 return security_xfrm_policy_alloc(&pol
->security
, uctx
, GFP_KERNEL
);
1257 static void copy_templates(struct xfrm_policy
*xp
, struct xfrm_user_tmpl
*ut
,
1263 for (i
= 0; i
< nr
; i
++, ut
++) {
1264 struct xfrm_tmpl
*t
= &xp
->xfrm_vec
[i
];
1266 memcpy(&t
->id
, &ut
->id
, sizeof(struct xfrm_id
));
1267 memcpy(&t
->saddr
, &ut
->saddr
,
1268 sizeof(xfrm_address_t
));
1269 t
->reqid
= ut
->reqid
;
1271 t
->share
= ut
->share
;
1272 t
->optional
= ut
->optional
;
1273 t
->aalgos
= ut
->aalgos
;
1274 t
->ealgos
= ut
->ealgos
;
1275 t
->calgos
= ut
->calgos
;
1276 /* If all masks are ~0, then we allow all algorithms. */
1277 t
->allalgs
= !~(t
->aalgos
& t
->ealgos
& t
->calgos
);
1278 t
->encap_family
= ut
->family
;
1282 static int validate_tmpl(int nr
, struct xfrm_user_tmpl
*ut
, u16 family
)
1286 if (nr
> XFRM_MAX_DEPTH
)
1289 for (i
= 0; i
< nr
; i
++) {
1290 /* We never validated the ut->family value, so many
1291 * applications simply leave it at zero. The check was
1292 * never made and ut->family was ignored because all
1293 * templates could be assumed to have the same family as
1294 * the policy itself. Now that we will have ipv4-in-ipv6
1295 * and ipv6-in-ipv4 tunnels, this is no longer true.
1298 ut
[i
].family
= family
;
1300 switch (ut
[i
].family
) {
1303 #if IS_ENABLED(CONFIG_IPV6)
1315 static int copy_from_user_tmpl(struct xfrm_policy
*pol
, struct nlattr
**attrs
)
1317 struct nlattr
*rt
= attrs
[XFRMA_TMPL
];
1322 struct xfrm_user_tmpl
*utmpl
= nla_data(rt
);
1323 int nr
= nla_len(rt
) / sizeof(*utmpl
);
1326 err
= validate_tmpl(nr
, utmpl
, pol
->family
);
1330 copy_templates(pol
, utmpl
, nr
);
1335 static int copy_from_user_policy_type(u8
*tp
, struct nlattr
**attrs
)
1337 struct nlattr
*rt
= attrs
[XFRMA_POLICY_TYPE
];
1338 struct xfrm_userpolicy_type
*upt
;
1339 u8 type
= XFRM_POLICY_TYPE_MAIN
;
1347 err
= verify_policy_type(type
);
1355 static void copy_from_user_policy(struct xfrm_policy
*xp
, struct xfrm_userpolicy_info
*p
)
1357 xp
->priority
= p
->priority
;
1358 xp
->index
= p
->index
;
1359 memcpy(&xp
->selector
, &p
->sel
, sizeof(xp
->selector
));
1360 memcpy(&xp
->lft
, &p
->lft
, sizeof(xp
->lft
));
1361 xp
->action
= p
->action
;
1362 xp
->flags
= p
->flags
;
1363 xp
->family
= p
->sel
.family
;
1364 /* XXX xp->share = p->share; */
1367 static void copy_to_user_policy(struct xfrm_policy
*xp
, struct xfrm_userpolicy_info
*p
, int dir
)
1369 memset(p
, 0, sizeof(*p
));
1370 memcpy(&p
->sel
, &xp
->selector
, sizeof(p
->sel
));
1371 memcpy(&p
->lft
, &xp
->lft
, sizeof(p
->lft
));
1372 memcpy(&p
->curlft
, &xp
->curlft
, sizeof(p
->curlft
));
1373 p
->priority
= xp
->priority
;
1374 p
->index
= xp
->index
;
1375 p
->sel
.family
= xp
->family
;
1377 p
->action
= xp
->action
;
1378 p
->flags
= xp
->flags
;
1379 p
->share
= XFRM_SHARE_ANY
; /* XXX xp->share */
1382 static struct xfrm_policy
*xfrm_policy_construct(struct net
*net
, struct xfrm_userpolicy_info
*p
, struct nlattr
**attrs
, int *errp
)
1384 struct xfrm_policy
*xp
= xfrm_policy_alloc(net
, GFP_KERNEL
);
1392 copy_from_user_policy(xp
, p
);
1394 err
= copy_from_user_policy_type(&xp
->type
, attrs
);
1398 if (!(err
= copy_from_user_tmpl(xp
, attrs
)))
1399 err
= copy_from_user_sec_ctx(xp
, attrs
);
1403 xfrm_mark_get(attrs
, &xp
->mark
);
1409 xfrm_policy_destroy(xp
);
1413 static int xfrm_add_policy(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1414 struct nlattr
**attrs
)
1416 struct net
*net
= sock_net(skb
->sk
);
1417 struct xfrm_userpolicy_info
*p
= nlmsg_data(nlh
);
1418 struct xfrm_policy
*xp
;
1423 err
= verify_newpolicy_info(p
);
1426 err
= verify_sec_ctx_len(attrs
);
1430 xp
= xfrm_policy_construct(net
, p
, attrs
, &err
);
1434 /* shouldn't excl be based on nlh flags??
1435 * Aha! this is anti-netlink really i.e more pfkey derived
1436 * in netlink excl is a flag and you wouldnt need
1437 * a type XFRM_MSG_UPDPOLICY - JHS */
1438 excl
= nlh
->nlmsg_type
== XFRM_MSG_NEWPOLICY
;
1439 err
= xfrm_policy_insert(p
->dir
, xp
, excl
);
1440 xfrm_audit_policy_add(xp
, err
? 0 : 1, true);
1443 security_xfrm_policy_free(xp
->security
);
1448 c
.event
= nlh
->nlmsg_type
;
1449 c
.seq
= nlh
->nlmsg_seq
;
1450 c
.portid
= nlh
->nlmsg_pid
;
1451 km_policy_notify(xp
, p
->dir
, &c
);
1458 static int copy_to_user_tmpl(struct xfrm_policy
*xp
, struct sk_buff
*skb
)
1460 struct xfrm_user_tmpl vec
[XFRM_MAX_DEPTH
];
1463 if (xp
->xfrm_nr
== 0)
1466 for (i
= 0; i
< xp
->xfrm_nr
; i
++) {
1467 struct xfrm_user_tmpl
*up
= &vec
[i
];
1468 struct xfrm_tmpl
*kp
= &xp
->xfrm_vec
[i
];
1470 memset(up
, 0, sizeof(*up
));
1471 memcpy(&up
->id
, &kp
->id
, sizeof(up
->id
));
1472 up
->family
= kp
->encap_family
;
1473 memcpy(&up
->saddr
, &kp
->saddr
, sizeof(up
->saddr
));
1474 up
->reqid
= kp
->reqid
;
1475 up
->mode
= kp
->mode
;
1476 up
->share
= kp
->share
;
1477 up
->optional
= kp
->optional
;
1478 up
->aalgos
= kp
->aalgos
;
1479 up
->ealgos
= kp
->ealgos
;
1480 up
->calgos
= kp
->calgos
;
1483 return nla_put(skb
, XFRMA_TMPL
,
1484 sizeof(struct xfrm_user_tmpl
) * xp
->xfrm_nr
, vec
);
1487 static inline int copy_to_user_state_sec_ctx(struct xfrm_state
*x
, struct sk_buff
*skb
)
1490 return copy_sec_ctx(x
->security
, skb
);
1495 static inline int copy_to_user_sec_ctx(struct xfrm_policy
*xp
, struct sk_buff
*skb
)
1498 return copy_sec_ctx(xp
->security
, skb
);
1501 static inline size_t userpolicy_type_attrsize(void)
1503 #ifdef CONFIG_XFRM_SUB_POLICY
1504 return nla_total_size(sizeof(struct xfrm_userpolicy_type
));
1510 #ifdef CONFIG_XFRM_SUB_POLICY
1511 static int copy_to_user_policy_type(u8 type
, struct sk_buff
*skb
)
1513 struct xfrm_userpolicy_type upt
= {
1517 return nla_put(skb
, XFRMA_POLICY_TYPE
, sizeof(upt
), &upt
);
1521 static inline int copy_to_user_policy_type(u8 type
, struct sk_buff
*skb
)
1527 static int dump_one_policy(struct xfrm_policy
*xp
, int dir
, int count
, void *ptr
)
1529 struct xfrm_dump_info
*sp
= ptr
;
1530 struct xfrm_userpolicy_info
*p
;
1531 struct sk_buff
*in_skb
= sp
->in_skb
;
1532 struct sk_buff
*skb
= sp
->out_skb
;
1533 struct nlmsghdr
*nlh
;
1536 nlh
= nlmsg_put(skb
, NETLINK_CB(in_skb
).portid
, sp
->nlmsg_seq
,
1537 XFRM_MSG_NEWPOLICY
, sizeof(*p
), sp
->nlmsg_flags
);
1541 p
= nlmsg_data(nlh
);
1542 copy_to_user_policy(xp
, p
, dir
);
1543 err
= copy_to_user_tmpl(xp
, skb
);
1545 err
= copy_to_user_sec_ctx(xp
, skb
);
1547 err
= copy_to_user_policy_type(xp
->type
, skb
);
1549 err
= xfrm_mark_put(skb
, &xp
->mark
);
1551 nlmsg_cancel(skb
, nlh
);
1554 nlmsg_end(skb
, nlh
);
1558 static int xfrm_dump_policy_done(struct netlink_callback
*cb
)
1560 struct xfrm_policy_walk
*walk
= (struct xfrm_policy_walk
*) &cb
->args
[1];
1561 struct net
*net
= sock_net(cb
->skb
->sk
);
1563 xfrm_policy_walk_done(walk
, net
);
1567 static int xfrm_dump_policy(struct sk_buff
*skb
, struct netlink_callback
*cb
)
1569 struct net
*net
= sock_net(skb
->sk
);
1570 struct xfrm_policy_walk
*walk
= (struct xfrm_policy_walk
*) &cb
->args
[1];
1571 struct xfrm_dump_info info
;
1573 BUILD_BUG_ON(sizeof(struct xfrm_policy_walk
) >
1574 sizeof(cb
->args
) - sizeof(cb
->args
[0]));
1576 info
.in_skb
= cb
->skb
;
1578 info
.nlmsg_seq
= cb
->nlh
->nlmsg_seq
;
1579 info
.nlmsg_flags
= NLM_F_MULTI
;
1583 xfrm_policy_walk_init(walk
, XFRM_POLICY_TYPE_ANY
);
1586 (void) xfrm_policy_walk(net
, walk
, dump_one_policy
, &info
);
1591 static struct sk_buff
*xfrm_policy_netlink(struct sk_buff
*in_skb
,
1592 struct xfrm_policy
*xp
,
1595 struct xfrm_dump_info info
;
1596 struct sk_buff
*skb
;
1599 skb
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
1601 return ERR_PTR(-ENOMEM
);
1603 info
.in_skb
= in_skb
;
1605 info
.nlmsg_seq
= seq
;
1606 info
.nlmsg_flags
= 0;
1608 err
= dump_one_policy(xp
, dir
, 0, &info
);
1611 return ERR_PTR(err
);
1617 static int xfrm_get_policy(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1618 struct nlattr
**attrs
)
1620 struct net
*net
= sock_net(skb
->sk
);
1621 struct xfrm_policy
*xp
;
1622 struct xfrm_userpolicy_id
*p
;
1623 u8 type
= XFRM_POLICY_TYPE_MAIN
;
1628 u32 mark
= xfrm_mark_get(attrs
, &m
);
1630 p
= nlmsg_data(nlh
);
1631 delete = nlh
->nlmsg_type
== XFRM_MSG_DELPOLICY
;
1633 err
= copy_from_user_policy_type(&type
, attrs
);
1637 err
= verify_policy_dir(p
->dir
);
1642 xp
= xfrm_policy_byid(net
, mark
, type
, p
->dir
, p
->index
, delete, &err
);
1644 struct nlattr
*rt
= attrs
[XFRMA_SEC_CTX
];
1645 struct xfrm_sec_ctx
*ctx
;
1647 err
= verify_sec_ctx_len(attrs
);
1653 struct xfrm_user_sec_ctx
*uctx
= nla_data(rt
);
1655 err
= security_xfrm_policy_alloc(&ctx
, uctx
, GFP_KERNEL
);
1659 xp
= xfrm_policy_bysel_ctx(net
, mark
, type
, p
->dir
, &p
->sel
,
1661 security_xfrm_policy_free(ctx
);
1667 struct sk_buff
*resp_skb
;
1669 resp_skb
= xfrm_policy_netlink(skb
, xp
, p
->dir
, nlh
->nlmsg_seq
);
1670 if (IS_ERR(resp_skb
)) {
1671 err
= PTR_ERR(resp_skb
);
1673 err
= nlmsg_unicast(net
->xfrm
.nlsk
, resp_skb
,
1674 NETLINK_CB(skb
).portid
);
1677 xfrm_audit_policy_delete(xp
, err
? 0 : 1, true);
1682 c
.data
.byid
= p
->index
;
1683 c
.event
= nlh
->nlmsg_type
;
1684 c
.seq
= nlh
->nlmsg_seq
;
1685 c
.portid
= nlh
->nlmsg_pid
;
1686 km_policy_notify(xp
, p
->dir
, &c
);
1691 if (delete && err
== 0)
1692 xfrm_garbage_collect(net
);
1696 static int xfrm_flush_sa(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1697 struct nlattr
**attrs
)
1699 struct net
*net
= sock_net(skb
->sk
);
1701 struct xfrm_usersa_flush
*p
= nlmsg_data(nlh
);
1704 err
= xfrm_state_flush(net
, p
->proto
, true);
1706 if (err
== -ESRCH
) /* empty table */
1710 c
.data
.proto
= p
->proto
;
1711 c
.event
= nlh
->nlmsg_type
;
1712 c
.seq
= nlh
->nlmsg_seq
;
1713 c
.portid
= nlh
->nlmsg_pid
;
1715 km_state_notify(NULL
, &c
);
1720 static inline size_t xfrm_aevent_msgsize(struct xfrm_state
*x
)
1722 size_t replay_size
= x
->replay_esn
?
1723 xfrm_replay_state_esn_len(x
->replay_esn
) :
1724 sizeof(struct xfrm_replay_state
);
1726 return NLMSG_ALIGN(sizeof(struct xfrm_aevent_id
))
1727 + nla_total_size(replay_size
)
1728 + nla_total_size(sizeof(struct xfrm_lifetime_cur
))
1729 + nla_total_size(sizeof(struct xfrm_mark
))
1730 + nla_total_size(4) /* XFRM_AE_RTHR */
1731 + nla_total_size(4); /* XFRM_AE_ETHR */
1734 static int build_aevent(struct sk_buff
*skb
, struct xfrm_state
*x
, const struct km_event
*c
)
1736 struct xfrm_aevent_id
*id
;
1737 struct nlmsghdr
*nlh
;
1740 nlh
= nlmsg_put(skb
, c
->portid
, c
->seq
, XFRM_MSG_NEWAE
, sizeof(*id
), 0);
1744 id
= nlmsg_data(nlh
);
1745 memcpy(&id
->sa_id
.daddr
, &x
->id
.daddr
, sizeof(x
->id
.daddr
));
1746 id
->sa_id
.spi
= x
->id
.spi
;
1747 id
->sa_id
.family
= x
->props
.family
;
1748 id
->sa_id
.proto
= x
->id
.proto
;
1749 memcpy(&id
->saddr
, &x
->props
.saddr
, sizeof(x
->props
.saddr
));
1750 id
->reqid
= x
->props
.reqid
;
1751 id
->flags
= c
->data
.aevent
;
1753 if (x
->replay_esn
) {
1754 err
= nla_put(skb
, XFRMA_REPLAY_ESN_VAL
,
1755 xfrm_replay_state_esn_len(x
->replay_esn
),
1758 err
= nla_put(skb
, XFRMA_REPLAY_VAL
, sizeof(x
->replay
),
1763 err
= nla_put(skb
, XFRMA_LTIME_VAL
, sizeof(x
->curlft
), &x
->curlft
);
1767 if (id
->flags
& XFRM_AE_RTHR
) {
1768 err
= nla_put_u32(skb
, XFRMA_REPLAY_THRESH
, x
->replay_maxdiff
);
1772 if (id
->flags
& XFRM_AE_ETHR
) {
1773 err
= nla_put_u32(skb
, XFRMA_ETIMER_THRESH
,
1774 x
->replay_maxage
* 10 / HZ
);
1778 err
= xfrm_mark_put(skb
, &x
->mark
);
1782 return nlmsg_end(skb
, nlh
);
1785 nlmsg_cancel(skb
, nlh
);
1789 static int xfrm_get_ae(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1790 struct nlattr
**attrs
)
1792 struct net
*net
= sock_net(skb
->sk
);
1793 struct xfrm_state
*x
;
1794 struct sk_buff
*r_skb
;
1799 struct xfrm_aevent_id
*p
= nlmsg_data(nlh
);
1800 struct xfrm_usersa_id
*id
= &p
->sa_id
;
1802 mark
= xfrm_mark_get(attrs
, &m
);
1804 x
= xfrm_state_lookup(net
, mark
, &id
->daddr
, id
->spi
, id
->proto
, id
->family
);
1808 r_skb
= nlmsg_new(xfrm_aevent_msgsize(x
), GFP_ATOMIC
);
1809 if (r_skb
== NULL
) {
1815 * XXX: is this lock really needed - none of the other
1816 * gets lock (the concern is things getting updated
1817 * while we are still reading) - jhs
1819 spin_lock_bh(&x
->lock
);
1820 c
.data
.aevent
= p
->flags
;
1821 c
.seq
= nlh
->nlmsg_seq
;
1822 c
.portid
= nlh
->nlmsg_pid
;
1824 if (build_aevent(r_skb
, x
, &c
) < 0)
1826 err
= nlmsg_unicast(net
->xfrm
.nlsk
, r_skb
, NETLINK_CB(skb
).portid
);
1827 spin_unlock_bh(&x
->lock
);
1832 static int xfrm_new_ae(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1833 struct nlattr
**attrs
)
1835 struct net
*net
= sock_net(skb
->sk
);
1836 struct xfrm_state
*x
;
1841 struct xfrm_aevent_id
*p
= nlmsg_data(nlh
);
1842 struct nlattr
*rp
= attrs
[XFRMA_REPLAY_VAL
];
1843 struct nlattr
*re
= attrs
[XFRMA_REPLAY_ESN_VAL
];
1844 struct nlattr
*lt
= attrs
[XFRMA_LTIME_VAL
];
1846 if (!lt
&& !rp
&& !re
)
1849 /* pedantic mode - thou shalt sayeth replaceth */
1850 if (!(nlh
->nlmsg_flags
&NLM_F_REPLACE
))
1853 mark
= xfrm_mark_get(attrs
, &m
);
1855 x
= xfrm_state_lookup(net
, mark
, &p
->sa_id
.daddr
, p
->sa_id
.spi
, p
->sa_id
.proto
, p
->sa_id
.family
);
1859 if (x
->km
.state
!= XFRM_STATE_VALID
)
1862 err
= xfrm_replay_verify_len(x
->replay_esn
, re
);
1866 spin_lock_bh(&x
->lock
);
1867 xfrm_update_ae_params(x
, attrs
, 1);
1868 spin_unlock_bh(&x
->lock
);
1870 c
.event
= nlh
->nlmsg_type
;
1871 c
.seq
= nlh
->nlmsg_seq
;
1872 c
.portid
= nlh
->nlmsg_pid
;
1873 c
.data
.aevent
= XFRM_AE_CU
;
1874 km_state_notify(x
, &c
);
1881 static int xfrm_flush_policy(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1882 struct nlattr
**attrs
)
1884 struct net
*net
= sock_net(skb
->sk
);
1886 u8 type
= XFRM_POLICY_TYPE_MAIN
;
1889 err
= copy_from_user_policy_type(&type
, attrs
);
1893 err
= xfrm_policy_flush(net
, type
, true);
1895 if (err
== -ESRCH
) /* empty table */
1901 c
.event
= nlh
->nlmsg_type
;
1902 c
.seq
= nlh
->nlmsg_seq
;
1903 c
.portid
= nlh
->nlmsg_pid
;
1905 km_policy_notify(NULL
, 0, &c
);
1909 static int xfrm_add_pol_expire(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1910 struct nlattr
**attrs
)
1912 struct net
*net
= sock_net(skb
->sk
);
1913 struct xfrm_policy
*xp
;
1914 struct xfrm_user_polexpire
*up
= nlmsg_data(nlh
);
1915 struct xfrm_userpolicy_info
*p
= &up
->pol
;
1916 u8 type
= XFRM_POLICY_TYPE_MAIN
;
1919 u32 mark
= xfrm_mark_get(attrs
, &m
);
1921 err
= copy_from_user_policy_type(&type
, attrs
);
1925 err
= verify_policy_dir(p
->dir
);
1930 xp
= xfrm_policy_byid(net
, mark
, type
, p
->dir
, p
->index
, 0, &err
);
1932 struct nlattr
*rt
= attrs
[XFRMA_SEC_CTX
];
1933 struct xfrm_sec_ctx
*ctx
;
1935 err
= verify_sec_ctx_len(attrs
);
1941 struct xfrm_user_sec_ctx
*uctx
= nla_data(rt
);
1943 err
= security_xfrm_policy_alloc(&ctx
, uctx
, GFP_KERNEL
);
1947 xp
= xfrm_policy_bysel_ctx(net
, mark
, type
, p
->dir
,
1948 &p
->sel
, ctx
, 0, &err
);
1949 security_xfrm_policy_free(ctx
);
1954 if (unlikely(xp
->walk
.dead
))
1959 xfrm_policy_delete(xp
, p
->dir
);
1960 xfrm_audit_policy_delete(xp
, 1, true);
1962 // reset the timers here?
1963 WARN(1, "Dont know what to do with soft policy expire\n");
1965 km_policy_expired(xp
, p
->dir
, up
->hard
, nlh
->nlmsg_pid
);
1972 static int xfrm_add_sa_expire(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
1973 struct nlattr
**attrs
)
1975 struct net
*net
= sock_net(skb
->sk
);
1976 struct xfrm_state
*x
;
1978 struct xfrm_user_expire
*ue
= nlmsg_data(nlh
);
1979 struct xfrm_usersa_info
*p
= &ue
->state
;
1981 u32 mark
= xfrm_mark_get(attrs
, &m
);
1983 x
= xfrm_state_lookup(net
, mark
, &p
->id
.daddr
, p
->id
.spi
, p
->id
.proto
, p
->family
);
1989 spin_lock_bh(&x
->lock
);
1991 if (x
->km
.state
!= XFRM_STATE_VALID
)
1993 km_state_expired(x
, ue
->hard
, nlh
->nlmsg_pid
);
1996 __xfrm_state_delete(x
);
1997 xfrm_audit_state_delete(x
, 1, true);
2001 spin_unlock_bh(&x
->lock
);
2006 static int xfrm_add_acquire(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
2007 struct nlattr
**attrs
)
2009 struct net
*net
= sock_net(skb
->sk
);
2010 struct xfrm_policy
*xp
;
2011 struct xfrm_user_tmpl
*ut
;
2013 struct nlattr
*rt
= attrs
[XFRMA_TMPL
];
2014 struct xfrm_mark mark
;
2016 struct xfrm_user_acquire
*ua
= nlmsg_data(nlh
);
2017 struct xfrm_state
*x
= xfrm_state_alloc(net
);
2023 xfrm_mark_get(attrs
, &mark
);
2025 err
= verify_newpolicy_info(&ua
->policy
);
2030 xp
= xfrm_policy_construct(net
, &ua
->policy
, attrs
, &err
);
2034 memcpy(&x
->id
, &ua
->id
, sizeof(ua
->id
));
2035 memcpy(&x
->props
.saddr
, &ua
->saddr
, sizeof(ua
->saddr
));
2036 memcpy(&x
->sel
, &ua
->sel
, sizeof(ua
->sel
));
2037 xp
->mark
.m
= x
->mark
.m
= mark
.m
;
2038 xp
->mark
.v
= x
->mark
.v
= mark
.v
;
2040 /* extract the templates and for each call km_key */
2041 for (i
= 0; i
< xp
->xfrm_nr
; i
++, ut
++) {
2042 struct xfrm_tmpl
*t
= &xp
->xfrm_vec
[i
];
2043 memcpy(&x
->id
, &t
->id
, sizeof(x
->id
));
2044 x
->props
.mode
= t
->mode
;
2045 x
->props
.reqid
= t
->reqid
;
2046 x
->props
.family
= ut
->family
;
2047 t
->aalgos
= ua
->aalgos
;
2048 t
->ealgos
= ua
->ealgos
;
2049 t
->calgos
= ua
->calgos
;
2050 err
= km_query(x
, t
, xp
);
2060 WARN(1, "BAD policy passed\n");
2067 #ifdef CONFIG_XFRM_MIGRATE
2068 static int copy_from_user_migrate(struct xfrm_migrate
*ma
,
2069 struct xfrm_kmaddress
*k
,
2070 struct nlattr
**attrs
, int *num
)
2072 struct nlattr
*rt
= attrs
[XFRMA_MIGRATE
];
2073 struct xfrm_user_migrate
*um
;
2077 struct xfrm_user_kmaddress
*uk
;
2079 uk
= nla_data(attrs
[XFRMA_KMADDRESS
]);
2080 memcpy(&k
->local
, &uk
->local
, sizeof(k
->local
));
2081 memcpy(&k
->remote
, &uk
->remote
, sizeof(k
->remote
));
2082 k
->family
= uk
->family
;
2083 k
->reserved
= uk
->reserved
;
2087 num_migrate
= nla_len(rt
) / sizeof(*um
);
2089 if (num_migrate
<= 0 || num_migrate
> XFRM_MAX_DEPTH
)
2092 for (i
= 0; i
< num_migrate
; i
++, um
++, ma
++) {
2093 memcpy(&ma
->old_daddr
, &um
->old_daddr
, sizeof(ma
->old_daddr
));
2094 memcpy(&ma
->old_saddr
, &um
->old_saddr
, sizeof(ma
->old_saddr
));
2095 memcpy(&ma
->new_daddr
, &um
->new_daddr
, sizeof(ma
->new_daddr
));
2096 memcpy(&ma
->new_saddr
, &um
->new_saddr
, sizeof(ma
->new_saddr
));
2098 ma
->proto
= um
->proto
;
2099 ma
->mode
= um
->mode
;
2100 ma
->reqid
= um
->reqid
;
2102 ma
->old_family
= um
->old_family
;
2103 ma
->new_family
= um
->new_family
;
2110 static int xfrm_do_migrate(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
2111 struct nlattr
**attrs
)
2113 struct xfrm_userpolicy_id
*pi
= nlmsg_data(nlh
);
2114 struct xfrm_migrate m
[XFRM_MAX_DEPTH
];
2115 struct xfrm_kmaddress km
, *kmp
;
2119 struct net
*net
= sock_net(skb
->sk
);
2121 if (attrs
[XFRMA_MIGRATE
] == NULL
)
2124 kmp
= attrs
[XFRMA_KMADDRESS
] ? &km
: NULL
;
2126 err
= copy_from_user_policy_type(&type
, attrs
);
2130 err
= copy_from_user_migrate((struct xfrm_migrate
*)m
, kmp
, attrs
, &n
);
2137 xfrm_migrate(&pi
->sel
, pi
->dir
, type
, m
, n
, kmp
, net
);
2142 static int xfrm_do_migrate(struct sk_buff
*skb
, struct nlmsghdr
*nlh
,
2143 struct nlattr
**attrs
)
2145 return -ENOPROTOOPT
;
2149 #ifdef CONFIG_XFRM_MIGRATE
2150 static int copy_to_user_migrate(const struct xfrm_migrate
*m
, struct sk_buff
*skb
)
2152 struct xfrm_user_migrate um
;
2154 memset(&um
, 0, sizeof(um
));
2155 um
.proto
= m
->proto
;
2157 um
.reqid
= m
->reqid
;
2158 um
.old_family
= m
->old_family
;
2159 memcpy(&um
.old_daddr
, &m
->old_daddr
, sizeof(um
.old_daddr
));
2160 memcpy(&um
.old_saddr
, &m
->old_saddr
, sizeof(um
.old_saddr
));
2161 um
.new_family
= m
->new_family
;
2162 memcpy(&um
.new_daddr
, &m
->new_daddr
, sizeof(um
.new_daddr
));
2163 memcpy(&um
.new_saddr
, &m
->new_saddr
, sizeof(um
.new_saddr
));
2165 return nla_put(skb
, XFRMA_MIGRATE
, sizeof(um
), &um
);
2168 static int copy_to_user_kmaddress(const struct xfrm_kmaddress
*k
, struct sk_buff
*skb
)
2170 struct xfrm_user_kmaddress uk
;
2172 memset(&uk
, 0, sizeof(uk
));
2173 uk
.family
= k
->family
;
2174 uk
.reserved
= k
->reserved
;
2175 memcpy(&uk
.local
, &k
->local
, sizeof(uk
.local
));
2176 memcpy(&uk
.remote
, &k
->remote
, sizeof(uk
.remote
));
2178 return nla_put(skb
, XFRMA_KMADDRESS
, sizeof(uk
), &uk
);
2181 static inline size_t xfrm_migrate_msgsize(int num_migrate
, int with_kma
)
2183 return NLMSG_ALIGN(sizeof(struct xfrm_userpolicy_id
))
2184 + (with_kma
? nla_total_size(sizeof(struct xfrm_kmaddress
)) : 0)
2185 + nla_total_size(sizeof(struct xfrm_user_migrate
) * num_migrate
)
2186 + userpolicy_type_attrsize();
2189 static int build_migrate(struct sk_buff
*skb
, const struct xfrm_migrate
*m
,
2190 int num_migrate
, const struct xfrm_kmaddress
*k
,
2191 const struct xfrm_selector
*sel
, u8 dir
, u8 type
)
2193 const struct xfrm_migrate
*mp
;
2194 struct xfrm_userpolicy_id
*pol_id
;
2195 struct nlmsghdr
*nlh
;
2198 nlh
= nlmsg_put(skb
, 0, 0, XFRM_MSG_MIGRATE
, sizeof(*pol_id
), 0);
2202 pol_id
= nlmsg_data(nlh
);
2203 /* copy data from selector, dir, and type to the pol_id */
2204 memset(pol_id
, 0, sizeof(*pol_id
));
2205 memcpy(&pol_id
->sel
, sel
, sizeof(pol_id
->sel
));
2209 err
= copy_to_user_kmaddress(k
, skb
);
2213 err
= copy_to_user_policy_type(type
, skb
);
2216 for (i
= 0, mp
= m
; i
< num_migrate
; i
++, mp
++) {
2217 err
= copy_to_user_migrate(mp
, skb
);
2222 return nlmsg_end(skb
, nlh
);
2225 nlmsg_cancel(skb
, nlh
);
2229 static int xfrm_send_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
2230 const struct xfrm_migrate
*m
, int num_migrate
,
2231 const struct xfrm_kmaddress
*k
)
2233 struct net
*net
= &init_net
;
2234 struct sk_buff
*skb
;
2236 skb
= nlmsg_new(xfrm_migrate_msgsize(num_migrate
, !!k
), GFP_ATOMIC
);
2241 if (build_migrate(skb
, m
, num_migrate
, k
, sel
, dir
, type
) < 0)
2244 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_MIGRATE
);
2247 static int xfrm_send_migrate(const struct xfrm_selector
*sel
, u8 dir
, u8 type
,
2248 const struct xfrm_migrate
*m
, int num_migrate
,
2249 const struct xfrm_kmaddress
*k
)
2251 return -ENOPROTOOPT
;
2255 #define XMSGSIZE(type) sizeof(struct type)
2257 static const int xfrm_msg_min
[XFRM_NR_MSGTYPES
] = {
2258 [XFRM_MSG_NEWSA
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_usersa_info
),
2259 [XFRM_MSG_DELSA
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_usersa_id
),
2260 [XFRM_MSG_GETSA
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_usersa_id
),
2261 [XFRM_MSG_NEWPOLICY
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_userpolicy_info
),
2262 [XFRM_MSG_DELPOLICY
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_userpolicy_id
),
2263 [XFRM_MSG_GETPOLICY
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_userpolicy_id
),
2264 [XFRM_MSG_ALLOCSPI
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_userspi_info
),
2265 [XFRM_MSG_ACQUIRE
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_user_acquire
),
2266 [XFRM_MSG_EXPIRE
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_user_expire
),
2267 [XFRM_MSG_UPDPOLICY
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_userpolicy_info
),
2268 [XFRM_MSG_UPDSA
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_usersa_info
),
2269 [XFRM_MSG_POLEXPIRE
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_user_polexpire
),
2270 [XFRM_MSG_FLUSHSA
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_usersa_flush
),
2271 [XFRM_MSG_FLUSHPOLICY
- XFRM_MSG_BASE
] = 0,
2272 [XFRM_MSG_NEWAE
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_aevent_id
),
2273 [XFRM_MSG_GETAE
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_aevent_id
),
2274 [XFRM_MSG_REPORT
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_user_report
),
2275 [XFRM_MSG_MIGRATE
- XFRM_MSG_BASE
] = XMSGSIZE(xfrm_userpolicy_id
),
2276 [XFRM_MSG_GETSADINFO
- XFRM_MSG_BASE
] = sizeof(u32
),
2277 [XFRM_MSG_GETSPDINFO
- XFRM_MSG_BASE
] = sizeof(u32
),
2282 static const struct nla_policy xfrma_policy
[XFRMA_MAX
+1] = {
2283 [XFRMA_SA
] = { .len
= sizeof(struct xfrm_usersa_info
)},
2284 [XFRMA_POLICY
] = { .len
= sizeof(struct xfrm_userpolicy_info
)},
2285 [XFRMA_LASTUSED
] = { .type
= NLA_U64
},
2286 [XFRMA_ALG_AUTH_TRUNC
] = { .len
= sizeof(struct xfrm_algo_auth
)},
2287 [XFRMA_ALG_AEAD
] = { .len
= sizeof(struct xfrm_algo_aead
) },
2288 [XFRMA_ALG_AUTH
] = { .len
= sizeof(struct xfrm_algo
) },
2289 [XFRMA_ALG_CRYPT
] = { .len
= sizeof(struct xfrm_algo
) },
2290 [XFRMA_ALG_COMP
] = { .len
= sizeof(struct xfrm_algo
) },
2291 [XFRMA_ENCAP
] = { .len
= sizeof(struct xfrm_encap_tmpl
) },
2292 [XFRMA_TMPL
] = { .len
= sizeof(struct xfrm_user_tmpl
) },
2293 [XFRMA_SEC_CTX
] = { .len
= sizeof(struct xfrm_sec_ctx
) },
2294 [XFRMA_LTIME_VAL
] = { .len
= sizeof(struct xfrm_lifetime_cur
) },
2295 [XFRMA_REPLAY_VAL
] = { .len
= sizeof(struct xfrm_replay_state
) },
2296 [XFRMA_REPLAY_THRESH
] = { .type
= NLA_U32
},
2297 [XFRMA_ETIMER_THRESH
] = { .type
= NLA_U32
},
2298 [XFRMA_SRCADDR
] = { .len
= sizeof(xfrm_address_t
) },
2299 [XFRMA_COADDR
] = { .len
= sizeof(xfrm_address_t
) },
2300 [XFRMA_POLICY_TYPE
] = { .len
= sizeof(struct xfrm_userpolicy_type
)},
2301 [XFRMA_MIGRATE
] = { .len
= sizeof(struct xfrm_user_migrate
) },
2302 [XFRMA_KMADDRESS
] = { .len
= sizeof(struct xfrm_user_kmaddress
) },
2303 [XFRMA_MARK
] = { .len
= sizeof(struct xfrm_mark
) },
2304 [XFRMA_TFCPAD
] = { .type
= NLA_U32
},
2305 [XFRMA_REPLAY_ESN_VAL
] = { .len
= sizeof(struct xfrm_replay_state_esn
) },
2306 [XFRMA_SA_EXTRA_FLAGS
] = { .type
= NLA_U32
},
2307 [XFRMA_PROTO
] = { .type
= NLA_U8
},
2308 [XFRMA_ADDRESS_FILTER
] = { .len
= sizeof(struct xfrm_address_filter
) },
2311 static const struct xfrm_link
{
2312 int (*doit
)(struct sk_buff
*, struct nlmsghdr
*, struct nlattr
**);
2313 int (*dump
)(struct sk_buff
*, struct netlink_callback
*);
2314 int (*done
)(struct netlink_callback
*);
2315 } xfrm_dispatch
[XFRM_NR_MSGTYPES
] = {
2316 [XFRM_MSG_NEWSA
- XFRM_MSG_BASE
] = { .doit
= xfrm_add_sa
},
2317 [XFRM_MSG_DELSA
- XFRM_MSG_BASE
] = { .doit
= xfrm_del_sa
},
2318 [XFRM_MSG_GETSA
- XFRM_MSG_BASE
] = { .doit
= xfrm_get_sa
,
2319 .dump
= xfrm_dump_sa
,
2320 .done
= xfrm_dump_sa_done
},
2321 [XFRM_MSG_NEWPOLICY
- XFRM_MSG_BASE
] = { .doit
= xfrm_add_policy
},
2322 [XFRM_MSG_DELPOLICY
- XFRM_MSG_BASE
] = { .doit
= xfrm_get_policy
},
2323 [XFRM_MSG_GETPOLICY
- XFRM_MSG_BASE
] = { .doit
= xfrm_get_policy
,
2324 .dump
= xfrm_dump_policy
,
2325 .done
= xfrm_dump_policy_done
},
2326 [XFRM_MSG_ALLOCSPI
- XFRM_MSG_BASE
] = { .doit
= xfrm_alloc_userspi
},
2327 [XFRM_MSG_ACQUIRE
- XFRM_MSG_BASE
] = { .doit
= xfrm_add_acquire
},
2328 [XFRM_MSG_EXPIRE
- XFRM_MSG_BASE
] = { .doit
= xfrm_add_sa_expire
},
2329 [XFRM_MSG_UPDPOLICY
- XFRM_MSG_BASE
] = { .doit
= xfrm_add_policy
},
2330 [XFRM_MSG_UPDSA
- XFRM_MSG_BASE
] = { .doit
= xfrm_add_sa
},
2331 [XFRM_MSG_POLEXPIRE
- XFRM_MSG_BASE
] = { .doit
= xfrm_add_pol_expire
},
2332 [XFRM_MSG_FLUSHSA
- XFRM_MSG_BASE
] = { .doit
= xfrm_flush_sa
},
2333 [XFRM_MSG_FLUSHPOLICY
- XFRM_MSG_BASE
] = { .doit
= xfrm_flush_policy
},
2334 [XFRM_MSG_NEWAE
- XFRM_MSG_BASE
] = { .doit
= xfrm_new_ae
},
2335 [XFRM_MSG_GETAE
- XFRM_MSG_BASE
] = { .doit
= xfrm_get_ae
},
2336 [XFRM_MSG_MIGRATE
- XFRM_MSG_BASE
] = { .doit
= xfrm_do_migrate
},
2337 [XFRM_MSG_GETSADINFO
- XFRM_MSG_BASE
] = { .doit
= xfrm_get_sadinfo
},
2338 [XFRM_MSG_GETSPDINFO
- XFRM_MSG_BASE
] = { .doit
= xfrm_get_spdinfo
},
2341 static int xfrm_user_rcv_msg(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2343 struct net
*net
= sock_net(skb
->sk
);
2344 struct nlattr
*attrs
[XFRMA_MAX
+1];
2345 const struct xfrm_link
*link
;
2348 type
= nlh
->nlmsg_type
;
2349 if (type
> XFRM_MSG_MAX
)
2352 type
-= XFRM_MSG_BASE
;
2353 link
= &xfrm_dispatch
[type
];
2355 /* All operations require privileges, even GET */
2356 if (!netlink_net_capable(skb
, CAP_NET_ADMIN
))
2359 if ((type
== (XFRM_MSG_GETSA
- XFRM_MSG_BASE
) ||
2360 type
== (XFRM_MSG_GETPOLICY
- XFRM_MSG_BASE
)) &&
2361 (nlh
->nlmsg_flags
& NLM_F_DUMP
)) {
2362 if (link
->dump
== NULL
)
2366 struct netlink_dump_control c
= {
2370 return netlink_dump_start(net
->xfrm
.nlsk
, skb
, nlh
, &c
);
2374 err
= nlmsg_parse(nlh
, xfrm_msg_min
[type
], attrs
, XFRMA_MAX
,
2379 if (link
->doit
== NULL
)
2382 return link
->doit(skb
, nlh
, attrs
);
2385 static void xfrm_netlink_rcv(struct sk_buff
*skb
)
2387 struct net
*net
= sock_net(skb
->sk
);
2389 mutex_lock(&net
->xfrm
.xfrm_cfg_mutex
);
2390 netlink_rcv_skb(skb
, &xfrm_user_rcv_msg
);
2391 mutex_unlock(&net
->xfrm
.xfrm_cfg_mutex
);
2394 static inline size_t xfrm_expire_msgsize(void)
2396 return NLMSG_ALIGN(sizeof(struct xfrm_user_expire
))
2397 + nla_total_size(sizeof(struct xfrm_mark
));
2400 static int build_expire(struct sk_buff
*skb
, struct xfrm_state
*x
, const struct km_event
*c
)
2402 struct xfrm_user_expire
*ue
;
2403 struct nlmsghdr
*nlh
;
2406 nlh
= nlmsg_put(skb
, c
->portid
, 0, XFRM_MSG_EXPIRE
, sizeof(*ue
), 0);
2410 ue
= nlmsg_data(nlh
);
2411 copy_to_user_state(x
, &ue
->state
);
2412 ue
->hard
= (c
->data
.hard
!= 0) ? 1 : 0;
2414 err
= xfrm_mark_put(skb
, &x
->mark
);
2418 return nlmsg_end(skb
, nlh
);
2421 static int xfrm_exp_state_notify(struct xfrm_state
*x
, const struct km_event
*c
)
2423 struct net
*net
= xs_net(x
);
2424 struct sk_buff
*skb
;
2426 skb
= nlmsg_new(xfrm_expire_msgsize(), GFP_ATOMIC
);
2430 if (build_expire(skb
, x
, c
) < 0) {
2435 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_EXPIRE
);
2438 static int xfrm_aevent_state_notify(struct xfrm_state
*x
, const struct km_event
*c
)
2440 struct net
*net
= xs_net(x
);
2441 struct sk_buff
*skb
;
2443 skb
= nlmsg_new(xfrm_aevent_msgsize(x
), GFP_ATOMIC
);
2447 if (build_aevent(skb
, x
, c
) < 0)
2450 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_AEVENTS
);
2453 static int xfrm_notify_sa_flush(const struct km_event
*c
)
2455 struct net
*net
= c
->net
;
2456 struct xfrm_usersa_flush
*p
;
2457 struct nlmsghdr
*nlh
;
2458 struct sk_buff
*skb
;
2459 int len
= NLMSG_ALIGN(sizeof(struct xfrm_usersa_flush
));
2461 skb
= nlmsg_new(len
, GFP_ATOMIC
);
2465 nlh
= nlmsg_put(skb
, c
->portid
, c
->seq
, XFRM_MSG_FLUSHSA
, sizeof(*p
), 0);
2471 p
= nlmsg_data(nlh
);
2472 p
->proto
= c
->data
.proto
;
2474 nlmsg_end(skb
, nlh
);
2476 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_SA
);
2479 static inline size_t xfrm_sa_len(struct xfrm_state
*x
)
2483 l
+= nla_total_size(aead_len(x
->aead
));
2485 l
+= nla_total_size(sizeof(struct xfrm_algo
) +
2486 (x
->aalg
->alg_key_len
+ 7) / 8);
2487 l
+= nla_total_size(xfrm_alg_auth_len(x
->aalg
));
2490 l
+= nla_total_size(xfrm_alg_len(x
->ealg
));
2492 l
+= nla_total_size(sizeof(*x
->calg
));
2494 l
+= nla_total_size(sizeof(*x
->encap
));
2496 l
+= nla_total_size(sizeof(x
->tfcpad
));
2498 l
+= nla_total_size(xfrm_replay_state_esn_len(x
->replay_esn
));
2500 l
+= nla_total_size(sizeof(struct xfrm_user_sec_ctx
) +
2501 x
->security
->ctx_len
);
2503 l
+= nla_total_size(sizeof(*x
->coaddr
));
2504 if (x
->props
.extra_flags
)
2505 l
+= nla_total_size(sizeof(x
->props
.extra_flags
));
2507 /* Must count x->lastused as it may become non-zero behind our back. */
2508 l
+= nla_total_size(sizeof(u64
));
2513 static int xfrm_notify_sa(struct xfrm_state
*x
, const struct km_event
*c
)
2515 struct net
*net
= xs_net(x
);
2516 struct xfrm_usersa_info
*p
;
2517 struct xfrm_usersa_id
*id
;
2518 struct nlmsghdr
*nlh
;
2519 struct sk_buff
*skb
;
2520 int len
= xfrm_sa_len(x
);
2523 headlen
= sizeof(*p
);
2524 if (c
->event
== XFRM_MSG_DELSA
) {
2525 len
+= nla_total_size(headlen
);
2526 headlen
= sizeof(*id
);
2527 len
+= nla_total_size(sizeof(struct xfrm_mark
));
2529 len
+= NLMSG_ALIGN(headlen
);
2531 skb
= nlmsg_new(len
, GFP_ATOMIC
);
2535 nlh
= nlmsg_put(skb
, c
->portid
, c
->seq
, c
->event
, headlen
, 0);
2540 p
= nlmsg_data(nlh
);
2541 if (c
->event
== XFRM_MSG_DELSA
) {
2542 struct nlattr
*attr
;
2544 id
= nlmsg_data(nlh
);
2545 memcpy(&id
->daddr
, &x
->id
.daddr
, sizeof(id
->daddr
));
2546 id
->spi
= x
->id
.spi
;
2547 id
->family
= x
->props
.family
;
2548 id
->proto
= x
->id
.proto
;
2550 attr
= nla_reserve(skb
, XFRMA_SA
, sizeof(*p
));
2557 err
= copy_to_user_state_extra(x
, p
, skb
);
2561 nlmsg_end(skb
, nlh
);
2563 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_SA
);
2570 static int xfrm_send_state_notify(struct xfrm_state
*x
, const struct km_event
*c
)
2574 case XFRM_MSG_EXPIRE
:
2575 return xfrm_exp_state_notify(x
, c
);
2576 case XFRM_MSG_NEWAE
:
2577 return xfrm_aevent_state_notify(x
, c
);
2578 case XFRM_MSG_DELSA
:
2579 case XFRM_MSG_UPDSA
:
2580 case XFRM_MSG_NEWSA
:
2581 return xfrm_notify_sa(x
, c
);
2582 case XFRM_MSG_FLUSHSA
:
2583 return xfrm_notify_sa_flush(c
);
2585 printk(KERN_NOTICE
"xfrm_user: Unknown SA event %d\n",
2594 static inline size_t xfrm_acquire_msgsize(struct xfrm_state
*x
,
2595 struct xfrm_policy
*xp
)
2597 return NLMSG_ALIGN(sizeof(struct xfrm_user_acquire
))
2598 + nla_total_size(sizeof(struct xfrm_user_tmpl
) * xp
->xfrm_nr
)
2599 + nla_total_size(sizeof(struct xfrm_mark
))
2600 + nla_total_size(xfrm_user_sec_ctx_size(x
->security
))
2601 + userpolicy_type_attrsize();
2604 static int build_acquire(struct sk_buff
*skb
, struct xfrm_state
*x
,
2605 struct xfrm_tmpl
*xt
, struct xfrm_policy
*xp
)
2607 __u32 seq
= xfrm_get_acqseq();
2608 struct xfrm_user_acquire
*ua
;
2609 struct nlmsghdr
*nlh
;
2612 nlh
= nlmsg_put(skb
, 0, 0, XFRM_MSG_ACQUIRE
, sizeof(*ua
), 0);
2616 ua
= nlmsg_data(nlh
);
2617 memcpy(&ua
->id
, &x
->id
, sizeof(ua
->id
));
2618 memcpy(&ua
->saddr
, &x
->props
.saddr
, sizeof(ua
->saddr
));
2619 memcpy(&ua
->sel
, &x
->sel
, sizeof(ua
->sel
));
2620 copy_to_user_policy(xp
, &ua
->policy
, XFRM_POLICY_OUT
);
2621 ua
->aalgos
= xt
->aalgos
;
2622 ua
->ealgos
= xt
->ealgos
;
2623 ua
->calgos
= xt
->calgos
;
2624 ua
->seq
= x
->km
.seq
= seq
;
2626 err
= copy_to_user_tmpl(xp
, skb
);
2628 err
= copy_to_user_state_sec_ctx(x
, skb
);
2630 err
= copy_to_user_policy_type(xp
->type
, skb
);
2632 err
= xfrm_mark_put(skb
, &xp
->mark
);
2634 nlmsg_cancel(skb
, nlh
);
2638 return nlmsg_end(skb
, nlh
);
2641 static int xfrm_send_acquire(struct xfrm_state
*x
, struct xfrm_tmpl
*xt
,
2642 struct xfrm_policy
*xp
)
2644 struct net
*net
= xs_net(x
);
2645 struct sk_buff
*skb
;
2647 skb
= nlmsg_new(xfrm_acquire_msgsize(x
, xp
), GFP_ATOMIC
);
2651 if (build_acquire(skb
, x
, xt
, xp
) < 0)
2654 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_ACQUIRE
);
2657 /* User gives us xfrm_user_policy_info followed by an array of 0
2658 * or more templates.
2660 static struct xfrm_policy
*xfrm_compile_policy(struct sock
*sk
, int opt
,
2661 u8
*data
, int len
, int *dir
)
2663 struct net
*net
= sock_net(sk
);
2664 struct xfrm_userpolicy_info
*p
= (struct xfrm_userpolicy_info
*)data
;
2665 struct xfrm_user_tmpl
*ut
= (struct xfrm_user_tmpl
*) (p
+ 1);
2666 struct xfrm_policy
*xp
;
2669 switch (sk
->sk_family
) {
2671 if (opt
!= IP_XFRM_POLICY
) {
2676 #if IS_ENABLED(CONFIG_IPV6)
2678 if (opt
!= IPV6_XFRM_POLICY
) {
2691 if (len
< sizeof(*p
) ||
2692 verify_newpolicy_info(p
))
2695 nr
= ((len
- sizeof(*p
)) / sizeof(*ut
));
2696 if (validate_tmpl(nr
, ut
, p
->sel
.family
))
2699 if (p
->dir
> XFRM_POLICY_OUT
)
2702 xp
= xfrm_policy_alloc(net
, GFP_ATOMIC
);
2708 copy_from_user_policy(xp
, p
);
2709 xp
->type
= XFRM_POLICY_TYPE_MAIN
;
2710 copy_templates(xp
, ut
, nr
);
2717 static inline size_t xfrm_polexpire_msgsize(struct xfrm_policy
*xp
)
2719 return NLMSG_ALIGN(sizeof(struct xfrm_user_polexpire
))
2720 + nla_total_size(sizeof(struct xfrm_user_tmpl
) * xp
->xfrm_nr
)
2721 + nla_total_size(xfrm_user_sec_ctx_size(xp
->security
))
2722 + nla_total_size(sizeof(struct xfrm_mark
))
2723 + userpolicy_type_attrsize();
2726 static int build_polexpire(struct sk_buff
*skb
, struct xfrm_policy
*xp
,
2727 int dir
, const struct km_event
*c
)
2729 struct xfrm_user_polexpire
*upe
;
2730 int hard
= c
->data
.hard
;
2731 struct nlmsghdr
*nlh
;
2734 nlh
= nlmsg_put(skb
, c
->portid
, 0, XFRM_MSG_POLEXPIRE
, sizeof(*upe
), 0);
2738 upe
= nlmsg_data(nlh
);
2739 copy_to_user_policy(xp
, &upe
->pol
, dir
);
2740 err
= copy_to_user_tmpl(xp
, skb
);
2742 err
= copy_to_user_sec_ctx(xp
, skb
);
2744 err
= copy_to_user_policy_type(xp
->type
, skb
);
2746 err
= xfrm_mark_put(skb
, &xp
->mark
);
2748 nlmsg_cancel(skb
, nlh
);
2753 return nlmsg_end(skb
, nlh
);
2756 static int xfrm_exp_policy_notify(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
2758 struct net
*net
= xp_net(xp
);
2759 struct sk_buff
*skb
;
2761 skb
= nlmsg_new(xfrm_polexpire_msgsize(xp
), GFP_ATOMIC
);
2765 if (build_polexpire(skb
, xp
, dir
, c
) < 0)
2768 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_EXPIRE
);
2771 static int xfrm_notify_policy(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
2773 int len
= nla_total_size(sizeof(struct xfrm_user_tmpl
) * xp
->xfrm_nr
);
2774 struct net
*net
= xp_net(xp
);
2775 struct xfrm_userpolicy_info
*p
;
2776 struct xfrm_userpolicy_id
*id
;
2777 struct nlmsghdr
*nlh
;
2778 struct sk_buff
*skb
;
2781 headlen
= sizeof(*p
);
2782 if (c
->event
== XFRM_MSG_DELPOLICY
) {
2783 len
+= nla_total_size(headlen
);
2784 headlen
= sizeof(*id
);
2786 len
+= userpolicy_type_attrsize();
2787 len
+= nla_total_size(sizeof(struct xfrm_mark
));
2788 len
+= NLMSG_ALIGN(headlen
);
2790 skb
= nlmsg_new(len
, GFP_ATOMIC
);
2794 nlh
= nlmsg_put(skb
, c
->portid
, c
->seq
, c
->event
, headlen
, 0);
2799 p
= nlmsg_data(nlh
);
2800 if (c
->event
== XFRM_MSG_DELPOLICY
) {
2801 struct nlattr
*attr
;
2803 id
= nlmsg_data(nlh
);
2804 memset(id
, 0, sizeof(*id
));
2807 id
->index
= xp
->index
;
2809 memcpy(&id
->sel
, &xp
->selector
, sizeof(id
->sel
));
2811 attr
= nla_reserve(skb
, XFRMA_POLICY
, sizeof(*p
));
2819 copy_to_user_policy(xp
, p
, dir
);
2820 err
= copy_to_user_tmpl(xp
, skb
);
2822 err
= copy_to_user_policy_type(xp
->type
, skb
);
2824 err
= xfrm_mark_put(skb
, &xp
->mark
);
2828 nlmsg_end(skb
, nlh
);
2830 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_POLICY
);
2837 static int xfrm_notify_policy_flush(const struct km_event
*c
)
2839 struct net
*net
= c
->net
;
2840 struct nlmsghdr
*nlh
;
2841 struct sk_buff
*skb
;
2844 skb
= nlmsg_new(userpolicy_type_attrsize(), GFP_ATOMIC
);
2848 nlh
= nlmsg_put(skb
, c
->portid
, c
->seq
, XFRM_MSG_FLUSHPOLICY
, 0, 0);
2852 err
= copy_to_user_policy_type(c
->data
.type
, skb
);
2856 nlmsg_end(skb
, nlh
);
2858 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_POLICY
);
2865 static int xfrm_send_policy_notify(struct xfrm_policy
*xp
, int dir
, const struct km_event
*c
)
2869 case XFRM_MSG_NEWPOLICY
:
2870 case XFRM_MSG_UPDPOLICY
:
2871 case XFRM_MSG_DELPOLICY
:
2872 return xfrm_notify_policy(xp
, dir
, c
);
2873 case XFRM_MSG_FLUSHPOLICY
:
2874 return xfrm_notify_policy_flush(c
);
2875 case XFRM_MSG_POLEXPIRE
:
2876 return xfrm_exp_policy_notify(xp
, dir
, c
);
2878 printk(KERN_NOTICE
"xfrm_user: Unknown Policy event %d\n",
2886 static inline size_t xfrm_report_msgsize(void)
2888 return NLMSG_ALIGN(sizeof(struct xfrm_user_report
));
2891 static int build_report(struct sk_buff
*skb
, u8 proto
,
2892 struct xfrm_selector
*sel
, xfrm_address_t
*addr
)
2894 struct xfrm_user_report
*ur
;
2895 struct nlmsghdr
*nlh
;
2897 nlh
= nlmsg_put(skb
, 0, 0, XFRM_MSG_REPORT
, sizeof(*ur
), 0);
2901 ur
= nlmsg_data(nlh
);
2903 memcpy(&ur
->sel
, sel
, sizeof(ur
->sel
));
2906 int err
= nla_put(skb
, XFRMA_COADDR
, sizeof(*addr
), addr
);
2908 nlmsg_cancel(skb
, nlh
);
2912 return nlmsg_end(skb
, nlh
);
2915 static int xfrm_send_report(struct net
*net
, u8 proto
,
2916 struct xfrm_selector
*sel
, xfrm_address_t
*addr
)
2918 struct sk_buff
*skb
;
2920 skb
= nlmsg_new(xfrm_report_msgsize(), GFP_ATOMIC
);
2924 if (build_report(skb
, proto
, sel
, addr
) < 0)
2927 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_REPORT
);
2930 static inline size_t xfrm_mapping_msgsize(void)
2932 return NLMSG_ALIGN(sizeof(struct xfrm_user_mapping
));
2935 static int build_mapping(struct sk_buff
*skb
, struct xfrm_state
*x
,
2936 xfrm_address_t
*new_saddr
, __be16 new_sport
)
2938 struct xfrm_user_mapping
*um
;
2939 struct nlmsghdr
*nlh
;
2941 nlh
= nlmsg_put(skb
, 0, 0, XFRM_MSG_MAPPING
, sizeof(*um
), 0);
2945 um
= nlmsg_data(nlh
);
2947 memcpy(&um
->id
.daddr
, &x
->id
.daddr
, sizeof(um
->id
.daddr
));
2948 um
->id
.spi
= x
->id
.spi
;
2949 um
->id
.family
= x
->props
.family
;
2950 um
->id
.proto
= x
->id
.proto
;
2951 memcpy(&um
->new_saddr
, new_saddr
, sizeof(um
->new_saddr
));
2952 memcpy(&um
->old_saddr
, &x
->props
.saddr
, sizeof(um
->old_saddr
));
2953 um
->new_sport
= new_sport
;
2954 um
->old_sport
= x
->encap
->encap_sport
;
2955 um
->reqid
= x
->props
.reqid
;
2957 return nlmsg_end(skb
, nlh
);
2960 static int xfrm_send_mapping(struct xfrm_state
*x
, xfrm_address_t
*ipaddr
,
2963 struct net
*net
= xs_net(x
);
2964 struct sk_buff
*skb
;
2966 if (x
->id
.proto
!= IPPROTO_ESP
)
2972 skb
= nlmsg_new(xfrm_mapping_msgsize(), GFP_ATOMIC
);
2976 if (build_mapping(skb
, x
, ipaddr
, sport
) < 0)
2979 return xfrm_nlmsg_multicast(net
, skb
, 0, XFRMNLGRP_MAPPING
);
2982 static bool xfrm_is_alive(const struct km_event
*c
)
2984 return (bool)xfrm_acquire_is_on(c
->net
);
2987 static struct xfrm_mgr netlink_mgr
= {
2989 .notify
= xfrm_send_state_notify
,
2990 .acquire
= xfrm_send_acquire
,
2991 .compile_policy
= xfrm_compile_policy
,
2992 .notify_policy
= xfrm_send_policy_notify
,
2993 .report
= xfrm_send_report
,
2994 .migrate
= xfrm_send_migrate
,
2995 .new_mapping
= xfrm_send_mapping
,
2996 .is_alive
= xfrm_is_alive
,
2999 static int __net_init
xfrm_user_net_init(struct net
*net
)
3002 struct netlink_kernel_cfg cfg
= {
3003 .groups
= XFRMNLGRP_MAX
,
3004 .input
= xfrm_netlink_rcv
,
3007 nlsk
= netlink_kernel_create(net
, NETLINK_XFRM
, &cfg
);
3010 net
->xfrm
.nlsk_stash
= nlsk
; /* Don't set to NULL */
3011 rcu_assign_pointer(net
->xfrm
.nlsk
, nlsk
);
3015 static void __net_exit
xfrm_user_net_exit(struct list_head
*net_exit_list
)
3018 list_for_each_entry(net
, net_exit_list
, exit_list
)
3019 RCU_INIT_POINTER(net
->xfrm
.nlsk
, NULL
);
3021 list_for_each_entry(net
, net_exit_list
, exit_list
)
3022 netlink_kernel_release(net
->xfrm
.nlsk_stash
);
3025 static struct pernet_operations xfrm_user_net_ops
= {
3026 .init
= xfrm_user_net_init
,
3027 .exit_batch
= xfrm_user_net_exit
,
3030 static int __init
xfrm_user_init(void)
3034 printk(KERN_INFO
"Initializing XFRM netlink socket\n");
3036 rv
= register_pernet_subsys(&xfrm_user_net_ops
);
3039 rv
= xfrm_register_km(&netlink_mgr
);
3041 unregister_pernet_subsys(&xfrm_user_net_ops
);
3045 static void __exit
xfrm_user_exit(void)
3047 xfrm_unregister_km(&netlink_mgr
);
3048 unregister_pernet_subsys(&xfrm_user_net_ops
);
3051 module_init(xfrm_user_init
);
3052 module_exit(xfrm_user_exit
);
3053 MODULE_LICENSE("GPL");
3054 MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK
, NETLINK_XFRM
);