2 * net/key/af_key.c An implementation of PF_KEYv2 sockets.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Maxim Giryaev <gem@asplinux.ru>
10 * David S. Miller <davem@redhat.com>
11 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
12 * Kunihiro Ishiguro <kunihiro@ipinfusion.com>
13 * Kazunori MIYAZAWA / USAGI Project <miyazawa@linux-ipv6.org>
14 * Derek Atkins <derek@ihtfp.com>
17 #include <linux/capability.h>
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/socket.h>
21 #include <linux/pfkeyv2.h>
22 #include <linux/ipsec.h>
23 #include <linux/skbuff.h>
24 #include <linux/rtnetlink.h>
26 #include <linux/in6.h>
27 #include <linux/proc_fs.h>
28 #include <linux/init.h>
29 #include <net/net_namespace.h>
30 #include <net/netns/generic.h>
35 #define _X2KEY(x) ((x) == XFRM_INF ? 0 : (x))
36 #define _KEY2X(x) ((x) == 0 ? XFRM_INF : (x))
38 static int pfkey_net_id __read_mostly;
40 /* List of all pfkey sockets. */
41 struct hlist_head table;
44 static DECLARE_WAIT_QUEUE_HEAD(pfkey_table_wait);
45 static DEFINE_RWLOCK(pfkey_table_lock);
46 static atomic_t pfkey_table_users = ATOMIC_INIT(0);
49 /* struct sock must be the first member of struct pfkey_sock */
57 int (*dump)(struct pfkey_sock *sk);
58 void (*done)(struct pfkey_sock *sk);
60 struct xfrm_policy_walk policy;
61 struct xfrm_state_walk state;
67 static inline struct pfkey_sock *pfkey_sk(struct sock *sk)
69 return (struct pfkey_sock *)sk;
72 static int pfkey_can_dump(struct sock *sk)
74 if (3 * atomic_read(&sk->sk_rmem_alloc) <= 2 * sk->sk_rcvbuf)
79 static void pfkey_terminate_dump(struct pfkey_sock *pfk)
83 kfree_skb(pfk->dump.skb);
87 pfk->dump.dump = NULL;
88 pfk->dump.done = NULL;
92 static void pfkey_sock_destruct(struct sock *sk)
94 struct net *net = sock_net(sk);
95 struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
97 pfkey_terminate_dump(pfkey_sk(sk));
98 skb_queue_purge(&sk->sk_receive_queue);
100 if (!sock_flag(sk, SOCK_DEAD)) {
101 printk("Attempt to release alive pfkey socket: %p\n", sk);
105 WARN_ON(atomic_read(&sk->sk_rmem_alloc));
106 WARN_ON(atomic_read(&sk->sk_wmem_alloc));
108 atomic_dec(&net_pfkey->socks_nr);
111 static void pfkey_table_grab(void)
113 write_lock_bh(&pfkey_table_lock);
115 if (atomic_read(&pfkey_table_users)) {
116 DECLARE_WAITQUEUE(wait, current);
118 add_wait_queue_exclusive(&pfkey_table_wait, &wait);
120 set_current_state(TASK_UNINTERRUPTIBLE);
121 if (atomic_read(&pfkey_table_users) == 0)
123 write_unlock_bh(&pfkey_table_lock);
125 write_lock_bh(&pfkey_table_lock);
128 __set_current_state(TASK_RUNNING);
129 remove_wait_queue(&pfkey_table_wait, &wait);
133 static __inline__ void pfkey_table_ungrab(void)
135 write_unlock_bh(&pfkey_table_lock);
136 wake_up(&pfkey_table_wait);
139 static __inline__ void pfkey_lock_table(void)
141 /* read_lock() synchronizes us to pfkey_table_grab */
143 read_lock(&pfkey_table_lock);
144 atomic_inc(&pfkey_table_users);
145 read_unlock(&pfkey_table_lock);
148 static __inline__ void pfkey_unlock_table(void)
150 if (atomic_dec_and_test(&pfkey_table_users))
151 wake_up(&pfkey_table_wait);
155 static const struct proto_ops pfkey_ops;
157 static void pfkey_insert(struct sock *sk)
159 struct net *net = sock_net(sk);
160 struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
163 sk_add_node(sk, &net_pfkey->table);
164 pfkey_table_ungrab();
167 static void pfkey_remove(struct sock *sk)
170 sk_del_node_init(sk);
171 pfkey_table_ungrab();
174 static struct proto key_proto = {
176 .owner = THIS_MODULE,
177 .obj_size = sizeof(struct pfkey_sock),
180 static int pfkey_create(struct net *net, struct socket *sock, int protocol,
183 struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
187 if (!capable(CAP_NET_ADMIN))
189 if (sock->type != SOCK_RAW)
190 return -ESOCKTNOSUPPORT;
191 if (protocol != PF_KEY_V2)
192 return -EPROTONOSUPPORT;
195 sk = sk_alloc(net, PF_KEY, GFP_KERNEL, &key_proto);
199 sock->ops = &pfkey_ops;
200 sock_init_data(sock, sk);
202 sk->sk_family = PF_KEY;
203 sk->sk_destruct = pfkey_sock_destruct;
205 atomic_inc(&net_pfkey->socks_nr);
214 static int pfkey_release(struct socket *sock)
216 struct sock *sk = sock->sk;
225 skb_queue_purge(&sk->sk_write_queue);
231 static int pfkey_broadcast_one(struct sk_buff *skb, struct sk_buff **skb2,
232 gfp_t allocation, struct sock *sk)
238 if (atomic_read(&skb->users) != 1) {
239 *skb2 = skb_clone(skb, allocation);
242 atomic_inc(&skb->users);
246 if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf) {
248 skb_set_owner_r(*skb2, sk);
249 skb_queue_tail(&sk->sk_receive_queue, *skb2);
250 sk->sk_data_ready(sk, (*skb2)->len);
259 /* Send SKB to all pfkey sockets matching selected criteria. */
260 #define BROADCAST_ALL 0
261 #define BROADCAST_ONE 1
262 #define BROADCAST_REGISTERED 2
263 #define BROADCAST_PROMISC_ONLY 4
264 static int pfkey_broadcast(struct sk_buff *skb, gfp_t allocation,
265 int broadcast_flags, struct sock *one_sk,
268 struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
270 struct hlist_node *node;
271 struct sk_buff *skb2 = NULL;
274 /* XXX Do we need something like netlink_overrun? I think
275 * XXX PF_KEY socket apps will not mind current behavior.
281 sk_for_each(sk, node, &net_pfkey->table) {
282 struct pfkey_sock *pfk = pfkey_sk(sk);
285 /* Yes, it means that if you are meant to receive this
286 * pfkey message you receive it twice as promiscuous
290 pfkey_broadcast_one(skb, &skb2, allocation, sk);
292 /* the exact target will be processed later */
295 if (broadcast_flags != BROADCAST_ALL) {
296 if (broadcast_flags & BROADCAST_PROMISC_ONLY)
298 if ((broadcast_flags & BROADCAST_REGISTERED) &&
301 if (broadcast_flags & BROADCAST_ONE)
305 err2 = pfkey_broadcast_one(skb, &skb2, allocation, sk);
307 /* Error is cleare after succecful sending to at least one
309 if ((broadcast_flags & BROADCAST_REGISTERED) && err)
312 pfkey_unlock_table();
315 err = pfkey_broadcast_one(skb, &skb2, allocation, one_sk);
322 static int pfkey_do_dump(struct pfkey_sock *pfk)
324 struct sadb_msg *hdr;
327 rc = pfk->dump.dump(pfk);
332 if (!pfkey_can_dump(&pfk->sk))
335 hdr = (struct sadb_msg *) pfk->dump.skb->data;
336 hdr->sadb_msg_seq = 0;
337 hdr->sadb_msg_errno = rc;
338 pfkey_broadcast(pfk->dump.skb, GFP_ATOMIC, BROADCAST_ONE,
339 &pfk->sk, sock_net(&pfk->sk));
340 pfk->dump.skb = NULL;
343 pfkey_terminate_dump(pfk);
347 static inline void pfkey_hdr_dup(struct sadb_msg *new, struct sadb_msg *orig)
352 static int pfkey_error(struct sadb_msg *orig, int err, struct sock *sk)
354 struct sk_buff *skb = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_KERNEL);
355 struct sadb_msg *hdr;
360 /* Woe be to the platform trying to support PFKEY yet
361 * having normal errnos outside the 1-255 range, inclusive.
364 if (err == ERESTARTSYS ||
365 err == ERESTARTNOHAND ||
366 err == ERESTARTNOINTR)
370 BUG_ON(err <= 0 || err >= 256);
372 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
373 pfkey_hdr_dup(hdr, orig);
374 hdr->sadb_msg_errno = (uint8_t) err;
375 hdr->sadb_msg_len = (sizeof(struct sadb_msg) /
378 pfkey_broadcast(skb, GFP_KERNEL, BROADCAST_ONE, sk, sock_net(sk));
383 static u8 sadb_ext_min_len[] = {
384 [SADB_EXT_RESERVED] = (u8) 0,
385 [SADB_EXT_SA] = (u8) sizeof(struct sadb_sa),
386 [SADB_EXT_LIFETIME_CURRENT] = (u8) sizeof(struct sadb_lifetime),
387 [SADB_EXT_LIFETIME_HARD] = (u8) sizeof(struct sadb_lifetime),
388 [SADB_EXT_LIFETIME_SOFT] = (u8) sizeof(struct sadb_lifetime),
389 [SADB_EXT_ADDRESS_SRC] = (u8) sizeof(struct sadb_address),
390 [SADB_EXT_ADDRESS_DST] = (u8) sizeof(struct sadb_address),
391 [SADB_EXT_ADDRESS_PROXY] = (u8) sizeof(struct sadb_address),
392 [SADB_EXT_KEY_AUTH] = (u8) sizeof(struct sadb_key),
393 [SADB_EXT_KEY_ENCRYPT] = (u8) sizeof(struct sadb_key),
394 [SADB_EXT_IDENTITY_SRC] = (u8) sizeof(struct sadb_ident),
395 [SADB_EXT_IDENTITY_DST] = (u8) sizeof(struct sadb_ident),
396 [SADB_EXT_SENSITIVITY] = (u8) sizeof(struct sadb_sens),
397 [SADB_EXT_PROPOSAL] = (u8) sizeof(struct sadb_prop),
398 [SADB_EXT_SUPPORTED_AUTH] = (u8) sizeof(struct sadb_supported),
399 [SADB_EXT_SUPPORTED_ENCRYPT] = (u8) sizeof(struct sadb_supported),
400 [SADB_EXT_SPIRANGE] = (u8) sizeof(struct sadb_spirange),
401 [SADB_X_EXT_KMPRIVATE] = (u8) sizeof(struct sadb_x_kmprivate),
402 [SADB_X_EXT_POLICY] = (u8) sizeof(struct sadb_x_policy),
403 [SADB_X_EXT_SA2] = (u8) sizeof(struct sadb_x_sa2),
404 [SADB_X_EXT_NAT_T_TYPE] = (u8) sizeof(struct sadb_x_nat_t_type),
405 [SADB_X_EXT_NAT_T_SPORT] = (u8) sizeof(struct sadb_x_nat_t_port),
406 [SADB_X_EXT_NAT_T_DPORT] = (u8) sizeof(struct sadb_x_nat_t_port),
407 [SADB_X_EXT_NAT_T_OA] = (u8) sizeof(struct sadb_address),
408 [SADB_X_EXT_SEC_CTX] = (u8) sizeof(struct sadb_x_sec_ctx),
409 [SADB_X_EXT_KMADDRESS] = (u8) sizeof(struct sadb_x_kmaddress),
412 /* Verify sadb_address_{len,prefixlen} against sa_family. */
413 static int verify_address_len(void *p)
415 struct sadb_address *sp = p;
416 struct sockaddr *addr = (struct sockaddr *)(sp + 1);
417 struct sockaddr_in *sin;
418 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
419 struct sockaddr_in6 *sin6;
423 switch (addr->sa_family) {
425 len = DIV_ROUND_UP(sizeof(*sp) + sizeof(*sin), sizeof(uint64_t));
426 if (sp->sadb_address_len != len ||
427 sp->sadb_address_prefixlen > 32)
430 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
432 len = DIV_ROUND_UP(sizeof(*sp) + sizeof(*sin6), sizeof(uint64_t));
433 if (sp->sadb_address_len != len ||
434 sp->sadb_address_prefixlen > 128)
439 /* It is user using kernel to keep track of security
440 * associations for another protocol, such as
441 * OSPF/RSVP/RIPV2/MIP. It is user's job to verify
444 * XXX Actually, association/policy database is not yet
445 * XXX able to cope with arbitrary sockaddr families.
446 * XXX When it can, remove this -EINVAL. -DaveM
455 static inline int pfkey_sec_ctx_len(struct sadb_x_sec_ctx *sec_ctx)
457 return DIV_ROUND_UP(sizeof(struct sadb_x_sec_ctx) +
458 sec_ctx->sadb_x_ctx_len,
462 static inline int verify_sec_ctx_len(void *p)
464 struct sadb_x_sec_ctx *sec_ctx = (struct sadb_x_sec_ctx *)p;
465 int len = sec_ctx->sadb_x_ctx_len;
470 len = pfkey_sec_ctx_len(sec_ctx);
472 if (sec_ctx->sadb_x_sec_len != len)
478 static inline struct xfrm_user_sec_ctx *pfkey_sadb2xfrm_user_sec_ctx(struct sadb_x_sec_ctx *sec_ctx)
480 struct xfrm_user_sec_ctx *uctx = NULL;
481 int ctx_size = sec_ctx->sadb_x_ctx_len;
483 uctx = kmalloc((sizeof(*uctx)+ctx_size), GFP_KERNEL);
488 uctx->len = pfkey_sec_ctx_len(sec_ctx);
489 uctx->exttype = sec_ctx->sadb_x_sec_exttype;
490 uctx->ctx_doi = sec_ctx->sadb_x_ctx_doi;
491 uctx->ctx_alg = sec_ctx->sadb_x_ctx_alg;
492 uctx->ctx_len = sec_ctx->sadb_x_ctx_len;
493 memcpy(uctx + 1, sec_ctx + 1,
499 static int present_and_same_family(struct sadb_address *src,
500 struct sadb_address *dst)
502 struct sockaddr *s_addr, *d_addr;
507 s_addr = (struct sockaddr *)(src + 1);
508 d_addr = (struct sockaddr *)(dst + 1);
509 if (s_addr->sa_family != d_addr->sa_family)
511 if (s_addr->sa_family != AF_INET
512 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
513 && s_addr->sa_family != AF_INET6
521 static int parse_exthdrs(struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
523 char *p = (char *) hdr;
529 struct sadb_ext *ehdr = (struct sadb_ext *) p;
533 ext_len = ehdr->sadb_ext_len;
534 ext_len *= sizeof(uint64_t);
535 ext_type = ehdr->sadb_ext_type;
536 if (ext_len < sizeof(uint64_t) ||
538 ext_type == SADB_EXT_RESERVED)
541 if (ext_type <= SADB_EXT_MAX) {
542 int min = (int) sadb_ext_min_len[ext_type];
545 if (ext_hdrs[ext_type-1] != NULL)
547 if (ext_type == SADB_EXT_ADDRESS_SRC ||
548 ext_type == SADB_EXT_ADDRESS_DST ||
549 ext_type == SADB_EXT_ADDRESS_PROXY ||
550 ext_type == SADB_X_EXT_NAT_T_OA) {
551 if (verify_address_len(p))
554 if (ext_type == SADB_X_EXT_SEC_CTX) {
555 if (verify_sec_ctx_len(p))
558 ext_hdrs[ext_type-1] = p;
568 pfkey_satype2proto(uint8_t satype)
571 case SADB_SATYPE_UNSPEC:
572 return IPSEC_PROTO_ANY;
575 case SADB_SATYPE_ESP:
577 case SADB_X_SATYPE_IPCOMP:
587 pfkey_proto2satype(uint16_t proto)
591 return SADB_SATYPE_AH;
593 return SADB_SATYPE_ESP;
595 return SADB_X_SATYPE_IPCOMP;
603 /* BTW, this scheme means that there is no way with PFKEY2 sockets to
604 * say specifically 'just raw sockets' as we encode them as 255.
607 static uint8_t pfkey_proto_to_xfrm(uint8_t proto)
609 return (proto == IPSEC_PROTO_ANY ? 0 : proto);
612 static uint8_t pfkey_proto_from_xfrm(uint8_t proto)
614 return (proto ? proto : IPSEC_PROTO_ANY);
617 static inline int pfkey_sockaddr_len(sa_family_t family)
621 return sizeof(struct sockaddr_in);
622 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
624 return sizeof(struct sockaddr_in6);
631 int pfkey_sockaddr_extract(const struct sockaddr *sa, xfrm_address_t *xaddr)
633 switch (sa->sa_family) {
636 ((struct sockaddr_in *)sa)->sin_addr.s_addr;
638 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
641 &((struct sockaddr_in6 *)sa)->sin6_addr,
642 sizeof(struct in6_addr));
650 int pfkey_sadb_addr2xfrm_addr(struct sadb_address *addr, xfrm_address_t *xaddr)
652 return pfkey_sockaddr_extract((struct sockaddr *)(addr + 1),
656 static struct xfrm_state *pfkey_xfrm_state_lookup(struct net *net, struct sadb_msg *hdr, void **ext_hdrs)
659 struct sadb_address *addr;
661 unsigned short family;
662 xfrm_address_t *xaddr;
664 sa = (struct sadb_sa *) ext_hdrs[SADB_EXT_SA-1];
668 proto = pfkey_satype2proto(hdr->sadb_msg_satype);
672 /* sadb_address_len should be checked by caller */
673 addr = (struct sadb_address *) ext_hdrs[SADB_EXT_ADDRESS_DST-1];
677 family = ((struct sockaddr *)(addr + 1))->sa_family;
680 xaddr = (xfrm_address_t *)&((struct sockaddr_in *)(addr + 1))->sin_addr;
682 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
684 xaddr = (xfrm_address_t *)&((struct sockaddr_in6 *)(addr + 1))->sin6_addr;
694 return xfrm_state_lookup(net, xaddr, sa->sadb_sa_spi, proto, family);
697 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
700 pfkey_sockaddr_size(sa_family_t family)
702 return PFKEY_ALIGN8(pfkey_sockaddr_len(family));
705 static inline int pfkey_mode_from_xfrm(int mode)
708 case XFRM_MODE_TRANSPORT:
709 return IPSEC_MODE_TRANSPORT;
710 case XFRM_MODE_TUNNEL:
711 return IPSEC_MODE_TUNNEL;
713 return IPSEC_MODE_BEET;
719 static inline int pfkey_mode_to_xfrm(int mode)
722 case IPSEC_MODE_ANY: /*XXX*/
723 case IPSEC_MODE_TRANSPORT:
724 return XFRM_MODE_TRANSPORT;
725 case IPSEC_MODE_TUNNEL:
726 return XFRM_MODE_TUNNEL;
727 case IPSEC_MODE_BEET:
728 return XFRM_MODE_BEET;
734 static unsigned int pfkey_sockaddr_fill(xfrm_address_t *xaddr, __be16 port,
736 unsigned short family)
741 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
742 sin->sin_family = AF_INET;
743 sin->sin_port = port;
744 sin->sin_addr.s_addr = xaddr->a4;
745 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
748 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
751 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
752 sin6->sin6_family = AF_INET6;
753 sin6->sin6_port = port;
754 sin6->sin6_flowinfo = 0;
755 ipv6_addr_copy(&sin6->sin6_addr, (struct in6_addr *)xaddr->a6);
756 sin6->sin6_scope_id = 0;
764 static struct sk_buff *__pfkey_xfrm_state2msg(struct xfrm_state *x,
765 int add_keys, int hsc)
768 struct sadb_msg *hdr;
770 struct sadb_lifetime *lifetime;
771 struct sadb_address *addr;
772 struct sadb_key *key;
773 struct sadb_x_sa2 *sa2;
774 struct sadb_x_sec_ctx *sec_ctx;
775 struct xfrm_sec_ctx *xfrm_ctx;
778 int auth_key_size = 0;
779 int encrypt_key_size = 0;
781 struct xfrm_encap_tmpl *natt = NULL;
784 /* address family check */
785 sockaddr_size = pfkey_sockaddr_size(x->props.family);
787 return ERR_PTR(-EINVAL);
789 /* base, SA, (lifetime (HSC),) address(SD), (address(P),)
790 key(AE), (identity(SD),) (sensitivity)> */
791 size = sizeof(struct sadb_msg) +sizeof(struct sadb_sa) +
792 sizeof(struct sadb_lifetime) +
793 ((hsc & 1) ? sizeof(struct sadb_lifetime) : 0) +
794 ((hsc & 2) ? sizeof(struct sadb_lifetime) : 0) +
795 sizeof(struct sadb_address)*2 +
797 sizeof(struct sadb_x_sa2);
799 if ((xfrm_ctx = x->security)) {
800 ctx_size = PFKEY_ALIGN8(xfrm_ctx->ctx_len);
801 size += sizeof(struct sadb_x_sec_ctx) + ctx_size;
804 /* identity & sensitivity */
805 if (xfrm_addr_cmp(&x->sel.saddr, &x->props.saddr, x->props.family))
806 size += sizeof(struct sadb_address) + sockaddr_size;
809 if (x->aalg && x->aalg->alg_key_len) {
811 PFKEY_ALIGN8((x->aalg->alg_key_len + 7) / 8);
812 size += sizeof(struct sadb_key) + auth_key_size;
814 if (x->ealg && x->ealg->alg_key_len) {
816 PFKEY_ALIGN8((x->ealg->alg_key_len+7) / 8);
817 size += sizeof(struct sadb_key) + encrypt_key_size;
823 if (natt && natt->encap_type) {
824 size += sizeof(struct sadb_x_nat_t_type);
825 size += sizeof(struct sadb_x_nat_t_port);
826 size += sizeof(struct sadb_x_nat_t_port);
829 skb = alloc_skb(size + 16, GFP_ATOMIC);
831 return ERR_PTR(-ENOBUFS);
833 /* call should fill header later */
834 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
835 memset(hdr, 0, size); /* XXX do we need this ? */
836 hdr->sadb_msg_len = size / sizeof(uint64_t);
839 sa = (struct sadb_sa *) skb_put(skb, sizeof(struct sadb_sa));
840 sa->sadb_sa_len = sizeof(struct sadb_sa)/sizeof(uint64_t);
841 sa->sadb_sa_exttype = SADB_EXT_SA;
842 sa->sadb_sa_spi = x->id.spi;
843 sa->sadb_sa_replay = x->props.replay_window;
844 switch (x->km.state) {
845 case XFRM_STATE_VALID:
846 sa->sadb_sa_state = x->km.dying ?
847 SADB_SASTATE_DYING : SADB_SASTATE_MATURE;
850 sa->sadb_sa_state = SADB_SASTATE_LARVAL;
853 sa->sadb_sa_state = SADB_SASTATE_DEAD;
856 sa->sadb_sa_auth = 0;
858 struct xfrm_algo_desc *a = xfrm_aalg_get_byname(x->aalg->alg_name, 0);
859 sa->sadb_sa_auth = a ? a->desc.sadb_alg_id : 0;
861 sa->sadb_sa_encrypt = 0;
862 BUG_ON(x->ealg && x->calg);
864 struct xfrm_algo_desc *a = xfrm_ealg_get_byname(x->ealg->alg_name, 0);
865 sa->sadb_sa_encrypt = a ? a->desc.sadb_alg_id : 0;
867 /* KAME compatible: sadb_sa_encrypt is overloaded with calg id */
869 struct xfrm_algo_desc *a = xfrm_calg_get_byname(x->calg->alg_name, 0);
870 sa->sadb_sa_encrypt = a ? a->desc.sadb_alg_id : 0;
873 sa->sadb_sa_flags = 0;
874 if (x->props.flags & XFRM_STATE_NOECN)
875 sa->sadb_sa_flags |= SADB_SAFLAGS_NOECN;
876 if (x->props.flags & XFRM_STATE_DECAP_DSCP)
877 sa->sadb_sa_flags |= SADB_SAFLAGS_DECAP_DSCP;
878 if (x->props.flags & XFRM_STATE_NOPMTUDISC)
879 sa->sadb_sa_flags |= SADB_SAFLAGS_NOPMTUDISC;
883 lifetime = (struct sadb_lifetime *) skb_put(skb,
884 sizeof(struct sadb_lifetime));
885 lifetime->sadb_lifetime_len =
886 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
887 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
888 lifetime->sadb_lifetime_allocations = _X2KEY(x->lft.hard_packet_limit);
889 lifetime->sadb_lifetime_bytes = _X2KEY(x->lft.hard_byte_limit);
890 lifetime->sadb_lifetime_addtime = x->lft.hard_add_expires_seconds;
891 lifetime->sadb_lifetime_usetime = x->lft.hard_use_expires_seconds;
895 lifetime = (struct sadb_lifetime *) skb_put(skb,
896 sizeof(struct sadb_lifetime));
897 lifetime->sadb_lifetime_len =
898 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
899 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
900 lifetime->sadb_lifetime_allocations = _X2KEY(x->lft.soft_packet_limit);
901 lifetime->sadb_lifetime_bytes = _X2KEY(x->lft.soft_byte_limit);
902 lifetime->sadb_lifetime_addtime = x->lft.soft_add_expires_seconds;
903 lifetime->sadb_lifetime_usetime = x->lft.soft_use_expires_seconds;
906 lifetime = (struct sadb_lifetime *) skb_put(skb,
907 sizeof(struct sadb_lifetime));
908 lifetime->sadb_lifetime_len =
909 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
910 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
911 lifetime->sadb_lifetime_allocations = x->curlft.packets;
912 lifetime->sadb_lifetime_bytes = x->curlft.bytes;
913 lifetime->sadb_lifetime_addtime = x->curlft.add_time;
914 lifetime->sadb_lifetime_usetime = x->curlft.use_time;
916 addr = (struct sadb_address*) skb_put(skb,
917 sizeof(struct sadb_address)+sockaddr_size);
918 addr->sadb_address_len =
919 (sizeof(struct sadb_address)+sockaddr_size)/
921 addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
922 /* "if the ports are non-zero, then the sadb_address_proto field,
923 normally zero, MUST be filled in with the transport
924 protocol's number." - RFC2367 */
925 addr->sadb_address_proto = 0;
926 addr->sadb_address_reserved = 0;
928 addr->sadb_address_prefixlen =
929 pfkey_sockaddr_fill(&x->props.saddr, 0,
930 (struct sockaddr *) (addr + 1),
932 if (!addr->sadb_address_prefixlen)
936 addr = (struct sadb_address*) skb_put(skb,
937 sizeof(struct sadb_address)+sockaddr_size);
938 addr->sadb_address_len =
939 (sizeof(struct sadb_address)+sockaddr_size)/
941 addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST;
942 addr->sadb_address_proto = 0;
943 addr->sadb_address_reserved = 0;
945 addr->sadb_address_prefixlen =
946 pfkey_sockaddr_fill(&x->id.daddr, 0,
947 (struct sockaddr *) (addr + 1),
949 if (!addr->sadb_address_prefixlen)
952 if (xfrm_addr_cmp(&x->sel.saddr, &x->props.saddr,
954 addr = (struct sadb_address*) skb_put(skb,
955 sizeof(struct sadb_address)+sockaddr_size);
956 addr->sadb_address_len =
957 (sizeof(struct sadb_address)+sockaddr_size)/
959 addr->sadb_address_exttype = SADB_EXT_ADDRESS_PROXY;
960 addr->sadb_address_proto =
961 pfkey_proto_from_xfrm(x->sel.proto);
962 addr->sadb_address_prefixlen = x->sel.prefixlen_s;
963 addr->sadb_address_reserved = 0;
965 pfkey_sockaddr_fill(&x->sel.saddr, x->sel.sport,
966 (struct sockaddr *) (addr + 1),
971 if (add_keys && auth_key_size) {
972 key = (struct sadb_key *) skb_put(skb,
973 sizeof(struct sadb_key)+auth_key_size);
974 key->sadb_key_len = (sizeof(struct sadb_key) + auth_key_size) /
976 key->sadb_key_exttype = SADB_EXT_KEY_AUTH;
977 key->sadb_key_bits = x->aalg->alg_key_len;
978 key->sadb_key_reserved = 0;
979 memcpy(key + 1, x->aalg->alg_key, (x->aalg->alg_key_len+7)/8);
982 if (add_keys && encrypt_key_size) {
983 key = (struct sadb_key *) skb_put(skb,
984 sizeof(struct sadb_key)+encrypt_key_size);
985 key->sadb_key_len = (sizeof(struct sadb_key) +
986 encrypt_key_size) / sizeof(uint64_t);
987 key->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT;
988 key->sadb_key_bits = x->ealg->alg_key_len;
989 key->sadb_key_reserved = 0;
990 memcpy(key + 1, x->ealg->alg_key,
991 (x->ealg->alg_key_len+7)/8);
995 sa2 = (struct sadb_x_sa2 *) skb_put(skb, sizeof(struct sadb_x_sa2));
996 sa2->sadb_x_sa2_len = sizeof(struct sadb_x_sa2)/sizeof(uint64_t);
997 sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
998 if ((mode = pfkey_mode_from_xfrm(x->props.mode)) < 0) {
1000 return ERR_PTR(-EINVAL);
1002 sa2->sadb_x_sa2_mode = mode;
1003 sa2->sadb_x_sa2_reserved1 = 0;
1004 sa2->sadb_x_sa2_reserved2 = 0;
1005 sa2->sadb_x_sa2_sequence = 0;
1006 sa2->sadb_x_sa2_reqid = x->props.reqid;
1008 if (natt && natt->encap_type) {
1009 struct sadb_x_nat_t_type *n_type;
1010 struct sadb_x_nat_t_port *n_port;
1013 n_type = (struct sadb_x_nat_t_type*) skb_put(skb, sizeof(*n_type));
1014 n_type->sadb_x_nat_t_type_len = sizeof(*n_type)/sizeof(uint64_t);
1015 n_type->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE;
1016 n_type->sadb_x_nat_t_type_type = natt->encap_type;
1017 n_type->sadb_x_nat_t_type_reserved[0] = 0;
1018 n_type->sadb_x_nat_t_type_reserved[1] = 0;
1019 n_type->sadb_x_nat_t_type_reserved[2] = 0;
1022 n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
1023 n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
1024 n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT;
1025 n_port->sadb_x_nat_t_port_port = natt->encap_sport;
1026 n_port->sadb_x_nat_t_port_reserved = 0;
1029 n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
1030 n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
1031 n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT;
1032 n_port->sadb_x_nat_t_port_port = natt->encap_dport;
1033 n_port->sadb_x_nat_t_port_reserved = 0;
1036 /* security context */
1038 sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb,
1039 sizeof(struct sadb_x_sec_ctx) + ctx_size);
1040 sec_ctx->sadb_x_sec_len =
1041 (sizeof(struct sadb_x_sec_ctx) + ctx_size) / sizeof(uint64_t);
1042 sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX;
1043 sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi;
1044 sec_ctx->sadb_x_ctx_alg = xfrm_ctx->ctx_alg;
1045 sec_ctx->sadb_x_ctx_len = xfrm_ctx->ctx_len;
1046 memcpy(sec_ctx + 1, xfrm_ctx->ctx_str,
1054 static inline struct sk_buff *pfkey_xfrm_state2msg(struct xfrm_state *x)
1056 struct sk_buff *skb;
1058 skb = __pfkey_xfrm_state2msg(x, 1, 3);
1063 static inline struct sk_buff *pfkey_xfrm_state2msg_expire(struct xfrm_state *x,
1066 return __pfkey_xfrm_state2msg(x, 0, hsc);
1069 static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net,
1070 struct sadb_msg *hdr,
1073 struct xfrm_state *x;
1074 struct sadb_lifetime *lifetime;
1076 struct sadb_key *key;
1077 struct sadb_x_sec_ctx *sec_ctx;
1082 sa = (struct sadb_sa *) ext_hdrs[SADB_EXT_SA-1];
1084 !present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1085 ext_hdrs[SADB_EXT_ADDRESS_DST-1]))
1086 return ERR_PTR(-EINVAL);
1087 if (hdr->sadb_msg_satype == SADB_SATYPE_ESP &&
1088 !ext_hdrs[SADB_EXT_KEY_ENCRYPT-1])
1089 return ERR_PTR(-EINVAL);
1090 if (hdr->sadb_msg_satype == SADB_SATYPE_AH &&
1091 !ext_hdrs[SADB_EXT_KEY_AUTH-1])
1092 return ERR_PTR(-EINVAL);
1093 if (!!ext_hdrs[SADB_EXT_LIFETIME_HARD-1] !=
1094 !!ext_hdrs[SADB_EXT_LIFETIME_SOFT-1])
1095 return ERR_PTR(-EINVAL);
1097 proto = pfkey_satype2proto(hdr->sadb_msg_satype);
1099 return ERR_PTR(-EINVAL);
1101 /* default error is no buffer space */
1106 Only SADB_SASTATE_MATURE SAs may be submitted in an SADB_ADD message.
1107 SADB_SASTATE_LARVAL SAs are created by SADB_GETSPI and it is not
1108 sensible to add a new SA in the DYING or SADB_SASTATE_DEAD state.
1109 Therefore, the sadb_sa_state field of all submitted SAs MUST be
1110 SADB_SASTATE_MATURE and the kernel MUST return an error if this is
1113 However, KAME setkey always uses SADB_SASTATE_LARVAL.
1114 Hence, we have to _ignore_ sadb_sa_state, which is also reasonable.
1116 if (sa->sadb_sa_auth > SADB_AALG_MAX ||
1117 (hdr->sadb_msg_satype == SADB_X_SATYPE_IPCOMP &&
1118 sa->sadb_sa_encrypt > SADB_X_CALG_MAX) ||
1119 sa->sadb_sa_encrypt > SADB_EALG_MAX)
1120 return ERR_PTR(-EINVAL);
1121 key = (struct sadb_key*) ext_hdrs[SADB_EXT_KEY_AUTH-1];
1123 sa->sadb_sa_auth != SADB_X_AALG_NULL &&
1124 ((key->sadb_key_bits+7) / 8 == 0 ||
1125 (key->sadb_key_bits+7) / 8 > key->sadb_key_len * sizeof(uint64_t)))
1126 return ERR_PTR(-EINVAL);
1127 key = ext_hdrs[SADB_EXT_KEY_ENCRYPT-1];
1129 sa->sadb_sa_encrypt != SADB_EALG_NULL &&
1130 ((key->sadb_key_bits+7) / 8 == 0 ||
1131 (key->sadb_key_bits+7) / 8 > key->sadb_key_len * sizeof(uint64_t)))
1132 return ERR_PTR(-EINVAL);
1134 x = xfrm_state_alloc(net);
1136 return ERR_PTR(-ENOBUFS);
1138 x->id.proto = proto;
1139 x->id.spi = sa->sadb_sa_spi;
1140 x->props.replay_window = sa->sadb_sa_replay;
1141 if (sa->sadb_sa_flags & SADB_SAFLAGS_NOECN)
1142 x->props.flags |= XFRM_STATE_NOECN;
1143 if (sa->sadb_sa_flags & SADB_SAFLAGS_DECAP_DSCP)
1144 x->props.flags |= XFRM_STATE_DECAP_DSCP;
1145 if (sa->sadb_sa_flags & SADB_SAFLAGS_NOPMTUDISC)
1146 x->props.flags |= XFRM_STATE_NOPMTUDISC;
1148 lifetime = (struct sadb_lifetime*) ext_hdrs[SADB_EXT_LIFETIME_HARD-1];
1149 if (lifetime != NULL) {
1150 x->lft.hard_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations);
1151 x->lft.hard_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes);
1152 x->lft.hard_add_expires_seconds = lifetime->sadb_lifetime_addtime;
1153 x->lft.hard_use_expires_seconds = lifetime->sadb_lifetime_usetime;
1155 lifetime = (struct sadb_lifetime*) ext_hdrs[SADB_EXT_LIFETIME_SOFT-1];
1156 if (lifetime != NULL) {
1157 x->lft.soft_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations);
1158 x->lft.soft_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes);
1159 x->lft.soft_add_expires_seconds = lifetime->sadb_lifetime_addtime;
1160 x->lft.soft_use_expires_seconds = lifetime->sadb_lifetime_usetime;
1163 sec_ctx = (struct sadb_x_sec_ctx *) ext_hdrs[SADB_X_EXT_SEC_CTX-1];
1164 if (sec_ctx != NULL) {
1165 struct xfrm_user_sec_ctx *uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx);
1170 err = security_xfrm_state_alloc(x, uctx);
1177 key = (struct sadb_key*) ext_hdrs[SADB_EXT_KEY_AUTH-1];
1178 if (sa->sadb_sa_auth) {
1180 struct xfrm_algo_desc *a = xfrm_aalg_get_byid(sa->sadb_sa_auth);
1186 keysize = (key->sadb_key_bits + 7) / 8;
1187 x->aalg = kmalloc(sizeof(*x->aalg) + keysize, GFP_KERNEL);
1190 strcpy(x->aalg->alg_name, a->name);
1191 x->aalg->alg_key_len = 0;
1193 x->aalg->alg_key_len = key->sadb_key_bits;
1194 memcpy(x->aalg->alg_key, key+1, keysize);
1196 x->aalg->alg_trunc_len = a->uinfo.auth.icv_truncbits;
1197 x->props.aalgo = sa->sadb_sa_auth;
1198 /* x->algo.flags = sa->sadb_sa_flags; */
1200 if (sa->sadb_sa_encrypt) {
1201 if (hdr->sadb_msg_satype == SADB_X_SATYPE_IPCOMP) {
1202 struct xfrm_algo_desc *a = xfrm_calg_get_byid(sa->sadb_sa_encrypt);
1207 x->calg = kmalloc(sizeof(*x->calg), GFP_KERNEL);
1210 strcpy(x->calg->alg_name, a->name);
1211 x->props.calgo = sa->sadb_sa_encrypt;
1214 struct xfrm_algo_desc *a = xfrm_ealg_get_byid(sa->sadb_sa_encrypt);
1219 key = (struct sadb_key*) ext_hdrs[SADB_EXT_KEY_ENCRYPT-1];
1221 keysize = (key->sadb_key_bits + 7) / 8;
1222 x->ealg = kmalloc(sizeof(*x->ealg) + keysize, GFP_KERNEL);
1225 strcpy(x->ealg->alg_name, a->name);
1226 x->ealg->alg_key_len = 0;
1228 x->ealg->alg_key_len = key->sadb_key_bits;
1229 memcpy(x->ealg->alg_key, key+1, keysize);
1231 x->props.ealgo = sa->sadb_sa_encrypt;
1234 /* x->algo.flags = sa->sadb_sa_flags; */
1236 x->props.family = pfkey_sadb_addr2xfrm_addr((struct sadb_address *) ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1238 if (!x->props.family) {
1239 err = -EAFNOSUPPORT;
1242 pfkey_sadb_addr2xfrm_addr((struct sadb_address *) ext_hdrs[SADB_EXT_ADDRESS_DST-1],
1245 if (ext_hdrs[SADB_X_EXT_SA2-1]) {
1246 struct sadb_x_sa2 *sa2 = (void*)ext_hdrs[SADB_X_EXT_SA2-1];
1247 int mode = pfkey_mode_to_xfrm(sa2->sadb_x_sa2_mode);
1252 x->props.mode = mode;
1253 x->props.reqid = sa2->sadb_x_sa2_reqid;
1256 if (ext_hdrs[SADB_EXT_ADDRESS_PROXY-1]) {
1257 struct sadb_address *addr = ext_hdrs[SADB_EXT_ADDRESS_PROXY-1];
1259 /* Nobody uses this, but we try. */
1260 x->sel.family = pfkey_sadb_addr2xfrm_addr(addr, &x->sel.saddr);
1261 x->sel.prefixlen_s = addr->sadb_address_prefixlen;
1265 x->sel.family = x->props.family;
1267 if (ext_hdrs[SADB_X_EXT_NAT_T_TYPE-1]) {
1268 struct sadb_x_nat_t_type* n_type;
1269 struct xfrm_encap_tmpl *natt;
1271 x->encap = kmalloc(sizeof(*x->encap), GFP_KERNEL);
1276 n_type = ext_hdrs[SADB_X_EXT_NAT_T_TYPE-1];
1277 natt->encap_type = n_type->sadb_x_nat_t_type_type;
1279 if (ext_hdrs[SADB_X_EXT_NAT_T_SPORT-1]) {
1280 struct sadb_x_nat_t_port* n_port =
1281 ext_hdrs[SADB_X_EXT_NAT_T_SPORT-1];
1282 natt->encap_sport = n_port->sadb_x_nat_t_port_port;
1284 if (ext_hdrs[SADB_X_EXT_NAT_T_DPORT-1]) {
1285 struct sadb_x_nat_t_port* n_port =
1286 ext_hdrs[SADB_X_EXT_NAT_T_DPORT-1];
1287 natt->encap_dport = n_port->sadb_x_nat_t_port_port;
1289 memset(&natt->encap_oa, 0, sizeof(natt->encap_oa));
1292 err = xfrm_init_state(x);
1296 x->km.seq = hdr->sadb_msg_seq;
1300 x->km.state = XFRM_STATE_DEAD;
1302 return ERR_PTR(err);
1305 static int pfkey_reserved(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1310 static int pfkey_getspi(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1312 struct net *net = sock_net(sk);
1313 struct sk_buff *resp_skb;
1314 struct sadb_x_sa2 *sa2;
1315 struct sadb_address *saddr, *daddr;
1316 struct sadb_msg *out_hdr;
1317 struct sadb_spirange *range;
1318 struct xfrm_state *x = NULL;
1321 u32 min_spi, max_spi;
1324 unsigned short family;
1325 xfrm_address_t *xsaddr = NULL, *xdaddr = NULL;
1327 if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1328 ext_hdrs[SADB_EXT_ADDRESS_DST-1]))
1331 proto = pfkey_satype2proto(hdr->sadb_msg_satype);
1335 if ((sa2 = ext_hdrs[SADB_X_EXT_SA2-1]) != NULL) {
1336 mode = pfkey_mode_to_xfrm(sa2->sadb_x_sa2_mode);
1339 reqid = sa2->sadb_x_sa2_reqid;
1345 saddr = ext_hdrs[SADB_EXT_ADDRESS_SRC-1];
1346 daddr = ext_hdrs[SADB_EXT_ADDRESS_DST-1];
1348 family = ((struct sockaddr *)(saddr + 1))->sa_family;
1351 xdaddr = (xfrm_address_t *)&((struct sockaddr_in *)(daddr + 1))->sin_addr.s_addr;
1352 xsaddr = (xfrm_address_t *)&((struct sockaddr_in *)(saddr + 1))->sin_addr.s_addr;
1354 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1356 xdaddr = (xfrm_address_t *)&((struct sockaddr_in6 *)(daddr + 1))->sin6_addr;
1357 xsaddr = (xfrm_address_t *)&((struct sockaddr_in6 *)(saddr + 1))->sin6_addr;
1362 if (hdr->sadb_msg_seq) {
1363 x = xfrm_find_acq_byseq(net, hdr->sadb_msg_seq);
1364 if (x && xfrm_addr_cmp(&x->id.daddr, xdaddr, family)) {
1371 x = xfrm_find_acq(net, mode, reqid, proto, xdaddr, xsaddr, 1, family);
1377 max_spi = 0x0fffffff;
1379 range = ext_hdrs[SADB_EXT_SPIRANGE-1];
1381 min_spi = range->sadb_spirange_min;
1382 max_spi = range->sadb_spirange_max;
1385 err = xfrm_alloc_spi(x, min_spi, max_spi);
1386 resp_skb = err ? ERR_PTR(err) : pfkey_xfrm_state2msg(x);
1388 if (IS_ERR(resp_skb)) {
1390 return PTR_ERR(resp_skb);
1393 out_hdr = (struct sadb_msg *) resp_skb->data;
1394 out_hdr->sadb_msg_version = hdr->sadb_msg_version;
1395 out_hdr->sadb_msg_type = SADB_GETSPI;
1396 out_hdr->sadb_msg_satype = pfkey_proto2satype(proto);
1397 out_hdr->sadb_msg_errno = 0;
1398 out_hdr->sadb_msg_reserved = 0;
1399 out_hdr->sadb_msg_seq = hdr->sadb_msg_seq;
1400 out_hdr->sadb_msg_pid = hdr->sadb_msg_pid;
1404 pfkey_broadcast(resp_skb, GFP_KERNEL, BROADCAST_ONE, sk, net);
1409 static int pfkey_acquire(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1411 struct net *net = sock_net(sk);
1412 struct xfrm_state *x;
1414 if (hdr->sadb_msg_len != sizeof(struct sadb_msg)/8)
1417 if (hdr->sadb_msg_seq == 0 || hdr->sadb_msg_errno == 0)
1420 x = xfrm_find_acq_byseq(net, hdr->sadb_msg_seq);
1424 spin_lock_bh(&x->lock);
1425 if (x->km.state == XFRM_STATE_ACQ) {
1426 x->km.state = XFRM_STATE_ERROR;
1427 wake_up(&net->xfrm.km_waitq);
1429 spin_unlock_bh(&x->lock);
1434 static inline int event2poltype(int event)
1437 case XFRM_MSG_DELPOLICY:
1438 return SADB_X_SPDDELETE;
1439 case XFRM_MSG_NEWPOLICY:
1440 return SADB_X_SPDADD;
1441 case XFRM_MSG_UPDPOLICY:
1442 return SADB_X_SPDUPDATE;
1443 case XFRM_MSG_POLEXPIRE:
1444 // return SADB_X_SPDEXPIRE;
1446 printk("pfkey: Unknown policy event %d\n", event);
1453 static inline int event2keytype(int event)
1456 case XFRM_MSG_DELSA:
1458 case XFRM_MSG_NEWSA:
1460 case XFRM_MSG_UPDSA:
1462 case XFRM_MSG_EXPIRE:
1465 printk("pfkey: Unknown SA event %d\n", event);
1473 static int key_notify_sa(struct xfrm_state *x, struct km_event *c)
1475 struct sk_buff *skb;
1476 struct sadb_msg *hdr;
1478 skb = pfkey_xfrm_state2msg(x);
1481 return PTR_ERR(skb);
1483 hdr = (struct sadb_msg *) skb->data;
1484 hdr->sadb_msg_version = PF_KEY_V2;
1485 hdr->sadb_msg_type = event2keytype(c->event);
1486 hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto);
1487 hdr->sadb_msg_errno = 0;
1488 hdr->sadb_msg_reserved = 0;
1489 hdr->sadb_msg_seq = c->seq;
1490 hdr->sadb_msg_pid = c->pid;
1492 pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_ALL, NULL, xs_net(x));
1497 static int pfkey_add(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1499 struct net *net = sock_net(sk);
1500 struct xfrm_state *x;
1504 x = pfkey_msg2xfrm_state(net, hdr, ext_hdrs);
1509 if (hdr->sadb_msg_type == SADB_ADD)
1510 err = xfrm_state_add(x);
1512 err = xfrm_state_update(x);
1514 xfrm_audit_state_add(x, err ? 0 : 1,
1515 audit_get_loginuid(current),
1516 audit_get_sessionid(current), 0);
1519 x->km.state = XFRM_STATE_DEAD;
1520 __xfrm_state_put(x);
1524 if (hdr->sadb_msg_type == SADB_ADD)
1525 c.event = XFRM_MSG_NEWSA;
1527 c.event = XFRM_MSG_UPDSA;
1528 c.seq = hdr->sadb_msg_seq;
1529 c.pid = hdr->sadb_msg_pid;
1530 km_state_notify(x, &c);
1536 static int pfkey_delete(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1538 struct net *net = sock_net(sk);
1539 struct xfrm_state *x;
1543 if (!ext_hdrs[SADB_EXT_SA-1] ||
1544 !present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1545 ext_hdrs[SADB_EXT_ADDRESS_DST-1]))
1548 x = pfkey_xfrm_state_lookup(net, hdr, ext_hdrs);
1552 if ((err = security_xfrm_state_delete(x)))
1555 if (xfrm_state_kern(x)) {
1560 err = xfrm_state_delete(x);
1565 c.seq = hdr->sadb_msg_seq;
1566 c.pid = hdr->sadb_msg_pid;
1567 c.event = XFRM_MSG_DELSA;
1568 km_state_notify(x, &c);
1570 xfrm_audit_state_delete(x, err ? 0 : 1,
1571 audit_get_loginuid(current),
1572 audit_get_sessionid(current), 0);
1578 static int pfkey_get(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1580 struct net *net = sock_net(sk);
1582 struct sk_buff *out_skb;
1583 struct sadb_msg *out_hdr;
1584 struct xfrm_state *x;
1586 if (!ext_hdrs[SADB_EXT_SA-1] ||
1587 !present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1588 ext_hdrs[SADB_EXT_ADDRESS_DST-1]))
1591 x = pfkey_xfrm_state_lookup(net, hdr, ext_hdrs);
1595 out_skb = pfkey_xfrm_state2msg(x);
1596 proto = x->id.proto;
1598 if (IS_ERR(out_skb))
1599 return PTR_ERR(out_skb);
1601 out_hdr = (struct sadb_msg *) out_skb->data;
1602 out_hdr->sadb_msg_version = hdr->sadb_msg_version;
1603 out_hdr->sadb_msg_type = SADB_GET;
1604 out_hdr->sadb_msg_satype = pfkey_proto2satype(proto);
1605 out_hdr->sadb_msg_errno = 0;
1606 out_hdr->sadb_msg_reserved = 0;
1607 out_hdr->sadb_msg_seq = hdr->sadb_msg_seq;
1608 out_hdr->sadb_msg_pid = hdr->sadb_msg_pid;
1609 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ONE, sk, sock_net(sk));
1614 static struct sk_buff *compose_sadb_supported(struct sadb_msg *orig,
1617 struct sk_buff *skb;
1618 struct sadb_msg *hdr;
1619 int len, auth_len, enc_len, i;
1621 auth_len = xfrm_count_auth_supported();
1623 auth_len *= sizeof(struct sadb_alg);
1624 auth_len += sizeof(struct sadb_supported);
1627 enc_len = xfrm_count_enc_supported();
1629 enc_len *= sizeof(struct sadb_alg);
1630 enc_len += sizeof(struct sadb_supported);
1633 len = enc_len + auth_len + sizeof(struct sadb_msg);
1635 skb = alloc_skb(len + 16, allocation);
1639 hdr = (struct sadb_msg *) skb_put(skb, sizeof(*hdr));
1640 pfkey_hdr_dup(hdr, orig);
1641 hdr->sadb_msg_errno = 0;
1642 hdr->sadb_msg_len = len / sizeof(uint64_t);
1645 struct sadb_supported *sp;
1646 struct sadb_alg *ap;
1648 sp = (struct sadb_supported *) skb_put(skb, auth_len);
1649 ap = (struct sadb_alg *) (sp + 1);
1651 sp->sadb_supported_len = auth_len / sizeof(uint64_t);
1652 sp->sadb_supported_exttype = SADB_EXT_SUPPORTED_AUTH;
1654 for (i = 0; ; i++) {
1655 struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i);
1658 if (aalg->available)
1664 struct sadb_supported *sp;
1665 struct sadb_alg *ap;
1667 sp = (struct sadb_supported *) skb_put(skb, enc_len);
1668 ap = (struct sadb_alg *) (sp + 1);
1670 sp->sadb_supported_len = enc_len / sizeof(uint64_t);
1671 sp->sadb_supported_exttype = SADB_EXT_SUPPORTED_ENCRYPT;
1673 for (i = 0; ; i++) {
1674 struct xfrm_algo_desc *ealg = xfrm_ealg_get_byidx(i);
1677 if (ealg->available)
1686 static int pfkey_register(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1688 struct pfkey_sock *pfk = pfkey_sk(sk);
1689 struct sk_buff *supp_skb;
1691 if (hdr->sadb_msg_satype > SADB_SATYPE_MAX)
1694 if (hdr->sadb_msg_satype != SADB_SATYPE_UNSPEC) {
1695 if (pfk->registered&(1<<hdr->sadb_msg_satype))
1697 pfk->registered |= (1<<hdr->sadb_msg_satype);
1702 supp_skb = compose_sadb_supported(hdr, GFP_KERNEL);
1704 if (hdr->sadb_msg_satype != SADB_SATYPE_UNSPEC)
1705 pfk->registered &= ~(1<<hdr->sadb_msg_satype);
1710 pfkey_broadcast(supp_skb, GFP_KERNEL, BROADCAST_REGISTERED, sk, sock_net(sk));
1715 static int unicast_flush_resp(struct sock *sk, struct sadb_msg *ihdr)
1717 struct sk_buff *skb;
1718 struct sadb_msg *hdr;
1720 skb = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_ATOMIC);
1724 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
1725 memcpy(hdr, ihdr, sizeof(struct sadb_msg));
1726 hdr->sadb_msg_errno = (uint8_t) 0;
1727 hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t));
1729 return pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_ONE, sk, sock_net(sk));
1732 static int key_notify_sa_flush(struct km_event *c)
1734 struct sk_buff *skb;
1735 struct sadb_msg *hdr;
1737 skb = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_ATOMIC);
1740 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
1741 hdr->sadb_msg_satype = pfkey_proto2satype(c->data.proto);
1742 hdr->sadb_msg_type = SADB_FLUSH;
1743 hdr->sadb_msg_seq = c->seq;
1744 hdr->sadb_msg_pid = c->pid;
1745 hdr->sadb_msg_version = PF_KEY_V2;
1746 hdr->sadb_msg_errno = (uint8_t) 0;
1747 hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t));
1749 pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_ALL, NULL, c->net);
1754 static int pfkey_flush(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1756 struct net *net = sock_net(sk);
1759 struct xfrm_audit audit_info;
1762 proto = pfkey_satype2proto(hdr->sadb_msg_satype);
1766 audit_info.loginuid = audit_get_loginuid(current);
1767 audit_info.sessionid = audit_get_sessionid(current);
1768 audit_info.secid = 0;
1769 err = xfrm_state_flush(net, proto, &audit_info);
1770 err2 = unicast_flush_resp(sk, hdr);
1772 if (err == -ESRCH) /* empty table - go quietly */
1774 return err ? err : err2;
1777 c.data.proto = proto;
1778 c.seq = hdr->sadb_msg_seq;
1779 c.pid = hdr->sadb_msg_pid;
1780 c.event = XFRM_MSG_FLUSHSA;
1782 km_state_notify(NULL, &c);
1787 static int dump_sa(struct xfrm_state *x, int count, void *ptr)
1789 struct pfkey_sock *pfk = ptr;
1790 struct sk_buff *out_skb;
1791 struct sadb_msg *out_hdr;
1793 if (!pfkey_can_dump(&pfk->sk))
1796 out_skb = pfkey_xfrm_state2msg(x);
1797 if (IS_ERR(out_skb))
1798 return PTR_ERR(out_skb);
1800 out_hdr = (struct sadb_msg *) out_skb->data;
1801 out_hdr->sadb_msg_version = pfk->dump.msg_version;
1802 out_hdr->sadb_msg_type = SADB_DUMP;
1803 out_hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto);
1804 out_hdr->sadb_msg_errno = 0;
1805 out_hdr->sadb_msg_reserved = 0;
1806 out_hdr->sadb_msg_seq = count + 1;
1807 out_hdr->sadb_msg_pid = pfk->dump.msg_pid;
1810 pfkey_broadcast(pfk->dump.skb, GFP_ATOMIC, BROADCAST_ONE,
1811 &pfk->sk, sock_net(&pfk->sk));
1812 pfk->dump.skb = out_skb;
1817 static int pfkey_dump_sa(struct pfkey_sock *pfk)
1819 struct net *net = sock_net(&pfk->sk);
1820 return xfrm_state_walk(net, &pfk->dump.u.state, dump_sa, (void *) pfk);
1823 static void pfkey_dump_sa_done(struct pfkey_sock *pfk)
1825 xfrm_state_walk_done(&pfk->dump.u.state);
1828 static int pfkey_dump(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1831 struct pfkey_sock *pfk = pfkey_sk(sk);
1833 if (pfk->dump.dump != NULL)
1836 proto = pfkey_satype2proto(hdr->sadb_msg_satype);
1840 pfk->dump.msg_version = hdr->sadb_msg_version;
1841 pfk->dump.msg_pid = hdr->sadb_msg_pid;
1842 pfk->dump.dump = pfkey_dump_sa;
1843 pfk->dump.done = pfkey_dump_sa_done;
1844 xfrm_state_walk_init(&pfk->dump.u.state, proto);
1846 return pfkey_do_dump(pfk);
1849 static int pfkey_promisc(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1851 struct pfkey_sock *pfk = pfkey_sk(sk);
1852 int satype = hdr->sadb_msg_satype;
1854 if (hdr->sadb_msg_len == (sizeof(*hdr) / sizeof(uint64_t))) {
1855 /* XXX we mangle packet... */
1856 hdr->sadb_msg_errno = 0;
1857 if (satype != 0 && satype != 1)
1859 pfk->promisc = satype;
1861 pfkey_broadcast(skb_clone(skb, GFP_KERNEL), GFP_KERNEL, BROADCAST_ALL, NULL, sock_net(sk));
1865 static int check_reqid(struct xfrm_policy *xp, int dir, int count, void *ptr)
1868 u32 reqid = *(u32*)ptr;
1870 for (i=0; i<xp->xfrm_nr; i++) {
1871 if (xp->xfrm_vec[i].reqid == reqid)
1877 static u32 gen_reqid(struct net *net)
1879 struct xfrm_policy_walk walk;
1882 static u32 reqid = IPSEC_MANUAL_REQID_MAX;
1888 reqid = IPSEC_MANUAL_REQID_MAX+1;
1889 xfrm_policy_walk_init(&walk, XFRM_POLICY_TYPE_MAIN);
1890 rc = xfrm_policy_walk(net, &walk, check_reqid, (void*)&reqid);
1891 xfrm_policy_walk_done(&walk);
1894 } while (reqid != start);
1899 parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq)
1901 struct net *net = xp_net(xp);
1902 struct xfrm_tmpl *t = xp->xfrm_vec + xp->xfrm_nr;
1905 if (xp->xfrm_nr >= XFRM_MAX_DEPTH)
1908 if (rq->sadb_x_ipsecrequest_mode == 0)
1911 t->id.proto = rq->sadb_x_ipsecrequest_proto; /* XXX check proto */
1912 if ((mode = pfkey_mode_to_xfrm(rq->sadb_x_ipsecrequest_mode)) < 0)
1915 if (rq->sadb_x_ipsecrequest_level == IPSEC_LEVEL_USE)
1917 else if (rq->sadb_x_ipsecrequest_level == IPSEC_LEVEL_UNIQUE) {
1918 t->reqid = rq->sadb_x_ipsecrequest_reqid;
1919 if (t->reqid > IPSEC_MANUAL_REQID_MAX)
1921 if (!t->reqid && !(t->reqid = gen_reqid(net)))
1925 /* addresses present only in tunnel mode */
1926 if (t->mode == XFRM_MODE_TUNNEL) {
1927 u8 *sa = (u8 *) (rq + 1);
1928 int family, socklen;
1930 family = pfkey_sockaddr_extract((struct sockaddr *)sa,
1935 socklen = pfkey_sockaddr_len(family);
1936 if (pfkey_sockaddr_extract((struct sockaddr *)(sa + socklen),
1937 &t->id.daddr) != family)
1939 t->encap_family = family;
1941 t->encap_family = xp->family;
1943 /* No way to set this via kame pfkey */
1950 parse_ipsecrequests(struct xfrm_policy *xp, struct sadb_x_policy *pol)
1953 int len = pol->sadb_x_policy_len*8 - sizeof(struct sadb_x_policy);
1954 struct sadb_x_ipsecrequest *rq = (void*)(pol+1);
1956 while (len >= sizeof(struct sadb_x_ipsecrequest)) {
1957 if ((err = parse_ipsecrequest(xp, rq)) < 0)
1959 len -= rq->sadb_x_ipsecrequest_len;
1960 rq = (void*)((u8*)rq + rq->sadb_x_ipsecrequest_len);
1965 static inline int pfkey_xfrm_policy2sec_ctx_size(struct xfrm_policy *xp)
1967 struct xfrm_sec_ctx *xfrm_ctx = xp->security;
1970 int len = sizeof(struct sadb_x_sec_ctx);
1971 len += xfrm_ctx->ctx_len;
1972 return PFKEY_ALIGN8(len);
1977 static int pfkey_xfrm_policy2msg_size(struct xfrm_policy *xp)
1979 struct xfrm_tmpl *t;
1980 int sockaddr_size = pfkey_sockaddr_size(xp->family);
1984 for (i=0; i<xp->xfrm_nr; i++) {
1985 t = xp->xfrm_vec + i;
1986 socklen += pfkey_sockaddr_len(t->encap_family);
1989 return sizeof(struct sadb_msg) +
1990 (sizeof(struct sadb_lifetime) * 3) +
1991 (sizeof(struct sadb_address) * 2) +
1992 (sockaddr_size * 2) +
1993 sizeof(struct sadb_x_policy) +
1994 (xp->xfrm_nr * sizeof(struct sadb_x_ipsecrequest)) +
1996 pfkey_xfrm_policy2sec_ctx_size(xp);
1999 static struct sk_buff * pfkey_xfrm_policy2msg_prep(struct xfrm_policy *xp)
2001 struct sk_buff *skb;
2004 size = pfkey_xfrm_policy2msg_size(xp);
2006 skb = alloc_skb(size + 16, GFP_ATOMIC);
2008 return ERR_PTR(-ENOBUFS);
2013 static int pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, int dir)
2015 struct sadb_msg *hdr;
2016 struct sadb_address *addr;
2017 struct sadb_lifetime *lifetime;
2018 struct sadb_x_policy *pol;
2019 struct sadb_x_sec_ctx *sec_ctx;
2020 struct xfrm_sec_ctx *xfrm_ctx;
2023 int sockaddr_size = pfkey_sockaddr_size(xp->family);
2024 int socklen = pfkey_sockaddr_len(xp->family);
2026 size = pfkey_xfrm_policy2msg_size(xp);
2028 /* call should fill header later */
2029 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
2030 memset(hdr, 0, size); /* XXX do we need this ? */
2033 addr = (struct sadb_address*) skb_put(skb,
2034 sizeof(struct sadb_address)+sockaddr_size);
2035 addr->sadb_address_len =
2036 (sizeof(struct sadb_address)+sockaddr_size)/
2038 addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
2039 addr->sadb_address_proto = pfkey_proto_from_xfrm(xp->selector.proto);
2040 addr->sadb_address_prefixlen = xp->selector.prefixlen_s;
2041 addr->sadb_address_reserved = 0;
2042 if (!pfkey_sockaddr_fill(&xp->selector.saddr,
2044 (struct sockaddr *) (addr + 1),
2049 addr = (struct sadb_address*) skb_put(skb,
2050 sizeof(struct sadb_address)+sockaddr_size);
2051 addr->sadb_address_len =
2052 (sizeof(struct sadb_address)+sockaddr_size)/
2054 addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST;
2055 addr->sadb_address_proto = pfkey_proto_from_xfrm(xp->selector.proto);
2056 addr->sadb_address_prefixlen = xp->selector.prefixlen_d;
2057 addr->sadb_address_reserved = 0;
2059 pfkey_sockaddr_fill(&xp->selector.daddr, xp->selector.dport,
2060 (struct sockaddr *) (addr + 1),
2064 lifetime = (struct sadb_lifetime *) skb_put(skb,
2065 sizeof(struct sadb_lifetime));
2066 lifetime->sadb_lifetime_len =
2067 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
2068 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
2069 lifetime->sadb_lifetime_allocations = _X2KEY(xp->lft.hard_packet_limit);
2070 lifetime->sadb_lifetime_bytes = _X2KEY(xp->lft.hard_byte_limit);
2071 lifetime->sadb_lifetime_addtime = xp->lft.hard_add_expires_seconds;
2072 lifetime->sadb_lifetime_usetime = xp->lft.hard_use_expires_seconds;
2074 lifetime = (struct sadb_lifetime *) skb_put(skb,
2075 sizeof(struct sadb_lifetime));
2076 lifetime->sadb_lifetime_len =
2077 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
2078 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
2079 lifetime->sadb_lifetime_allocations = _X2KEY(xp->lft.soft_packet_limit);
2080 lifetime->sadb_lifetime_bytes = _X2KEY(xp->lft.soft_byte_limit);
2081 lifetime->sadb_lifetime_addtime = xp->lft.soft_add_expires_seconds;
2082 lifetime->sadb_lifetime_usetime = xp->lft.soft_use_expires_seconds;
2084 lifetime = (struct sadb_lifetime *) skb_put(skb,
2085 sizeof(struct sadb_lifetime));
2086 lifetime->sadb_lifetime_len =
2087 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
2088 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
2089 lifetime->sadb_lifetime_allocations = xp->curlft.packets;
2090 lifetime->sadb_lifetime_bytes = xp->curlft.bytes;
2091 lifetime->sadb_lifetime_addtime = xp->curlft.add_time;
2092 lifetime->sadb_lifetime_usetime = xp->curlft.use_time;
2094 pol = (struct sadb_x_policy *) skb_put(skb, sizeof(struct sadb_x_policy));
2095 pol->sadb_x_policy_len = sizeof(struct sadb_x_policy)/sizeof(uint64_t);
2096 pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
2097 pol->sadb_x_policy_type = IPSEC_POLICY_DISCARD;
2098 if (xp->action == XFRM_POLICY_ALLOW) {
2100 pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
2102 pol->sadb_x_policy_type = IPSEC_POLICY_NONE;
2104 pol->sadb_x_policy_dir = dir+1;
2105 pol->sadb_x_policy_id = xp->index;
2106 pol->sadb_x_policy_priority = xp->priority;
2108 for (i=0; i<xp->xfrm_nr; i++) {
2109 struct sadb_x_ipsecrequest *rq;
2110 struct xfrm_tmpl *t = xp->xfrm_vec + i;
2114 req_size = sizeof(struct sadb_x_ipsecrequest);
2115 if (t->mode == XFRM_MODE_TUNNEL) {
2116 socklen = pfkey_sockaddr_len(t->encap_family);
2117 req_size += socklen * 2;
2121 rq = (void*)skb_put(skb, req_size);
2122 pol->sadb_x_policy_len += req_size/8;
2123 memset(rq, 0, sizeof(*rq));
2124 rq->sadb_x_ipsecrequest_len = req_size;
2125 rq->sadb_x_ipsecrequest_proto = t->id.proto;
2126 if ((mode = pfkey_mode_from_xfrm(t->mode)) < 0)
2128 rq->sadb_x_ipsecrequest_mode = mode;
2129 rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_REQUIRE;
2131 rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_UNIQUE;
2133 rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_USE;
2134 rq->sadb_x_ipsecrequest_reqid = t->reqid;
2136 if (t->mode == XFRM_MODE_TUNNEL) {
2137 u8 *sa = (void *)(rq + 1);
2138 pfkey_sockaddr_fill(&t->saddr, 0,
2139 (struct sockaddr *)sa,
2141 pfkey_sockaddr_fill(&t->id.daddr, 0,
2142 (struct sockaddr *) (sa + socklen),
2147 /* security context */
2148 if ((xfrm_ctx = xp->security)) {
2149 int ctx_size = pfkey_xfrm_policy2sec_ctx_size(xp);
2151 sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb, ctx_size);
2152 sec_ctx->sadb_x_sec_len = ctx_size / sizeof(uint64_t);
2153 sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX;
2154 sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi;
2155 sec_ctx->sadb_x_ctx_alg = xfrm_ctx->ctx_alg;
2156 sec_ctx->sadb_x_ctx_len = xfrm_ctx->ctx_len;
2157 memcpy(sec_ctx + 1, xfrm_ctx->ctx_str,
2161 hdr->sadb_msg_len = size / sizeof(uint64_t);
2162 hdr->sadb_msg_reserved = atomic_read(&xp->refcnt);
2167 static int key_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *c)
2169 struct sk_buff *out_skb;
2170 struct sadb_msg *out_hdr;
2173 out_skb = pfkey_xfrm_policy2msg_prep(xp);
2174 if (IS_ERR(out_skb)) {
2175 err = PTR_ERR(out_skb);
2178 err = pfkey_xfrm_policy2msg(out_skb, xp, dir);
2182 out_hdr = (struct sadb_msg *) out_skb->data;
2183 out_hdr->sadb_msg_version = PF_KEY_V2;
2185 if (c->data.byid && c->event == XFRM_MSG_DELPOLICY)
2186 out_hdr->sadb_msg_type = SADB_X_SPDDELETE2;
2188 out_hdr->sadb_msg_type = event2poltype(c->event);
2189 out_hdr->sadb_msg_errno = 0;
2190 out_hdr->sadb_msg_seq = c->seq;
2191 out_hdr->sadb_msg_pid = c->pid;
2192 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ALL, NULL, xp_net(xp));
2198 static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
2200 struct net *net = sock_net(sk);
2202 struct sadb_lifetime *lifetime;
2203 struct sadb_address *sa;
2204 struct sadb_x_policy *pol;
2205 struct xfrm_policy *xp;
2207 struct sadb_x_sec_ctx *sec_ctx;
2209 if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
2210 ext_hdrs[SADB_EXT_ADDRESS_DST-1]) ||
2211 !ext_hdrs[SADB_X_EXT_POLICY-1])
2214 pol = ext_hdrs[SADB_X_EXT_POLICY-1];
2215 if (pol->sadb_x_policy_type > IPSEC_POLICY_IPSEC)
2217 if (!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir >= IPSEC_DIR_MAX)
2220 xp = xfrm_policy_alloc(net, GFP_KERNEL);
2224 xp->action = (pol->sadb_x_policy_type == IPSEC_POLICY_DISCARD ?
2225 XFRM_POLICY_BLOCK : XFRM_POLICY_ALLOW);
2226 xp->priority = pol->sadb_x_policy_priority;
2228 sa = ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
2229 xp->family = pfkey_sadb_addr2xfrm_addr(sa, &xp->selector.saddr);
2234 xp->selector.family = xp->family;
2235 xp->selector.prefixlen_s = sa->sadb_address_prefixlen;
2236 xp->selector.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto);
2237 xp->selector.sport = ((struct sockaddr_in *)(sa+1))->sin_port;
2238 if (xp->selector.sport)
2239 xp->selector.sport_mask = htons(0xffff);
2241 sa = ext_hdrs[SADB_EXT_ADDRESS_DST-1],
2242 pfkey_sadb_addr2xfrm_addr(sa, &xp->selector.daddr);
2243 xp->selector.prefixlen_d = sa->sadb_address_prefixlen;
2245 /* Amusing, we set this twice. KAME apps appear to set same value
2246 * in both addresses.
2248 xp->selector.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto);
2250 xp->selector.dport = ((struct sockaddr_in *)(sa+1))->sin_port;
2251 if (xp->selector.dport)
2252 xp->selector.dport_mask = htons(0xffff);
2254 sec_ctx = (struct sadb_x_sec_ctx *) ext_hdrs[SADB_X_EXT_SEC_CTX-1];
2255 if (sec_ctx != NULL) {
2256 struct xfrm_user_sec_ctx *uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx);
2263 err = security_xfrm_policy_alloc(&xp->security, uctx);
2270 xp->lft.soft_byte_limit = XFRM_INF;
2271 xp->lft.hard_byte_limit = XFRM_INF;
2272 xp->lft.soft_packet_limit = XFRM_INF;
2273 xp->lft.hard_packet_limit = XFRM_INF;
2274 if ((lifetime = ext_hdrs[SADB_EXT_LIFETIME_HARD-1]) != NULL) {
2275 xp->lft.hard_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations);
2276 xp->lft.hard_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes);
2277 xp->lft.hard_add_expires_seconds = lifetime->sadb_lifetime_addtime;
2278 xp->lft.hard_use_expires_seconds = lifetime->sadb_lifetime_usetime;
2280 if ((lifetime = ext_hdrs[SADB_EXT_LIFETIME_SOFT-1]) != NULL) {
2281 xp->lft.soft_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations);
2282 xp->lft.soft_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes);
2283 xp->lft.soft_add_expires_seconds = lifetime->sadb_lifetime_addtime;
2284 xp->lft.soft_use_expires_seconds = lifetime->sadb_lifetime_usetime;
2287 if (pol->sadb_x_policy_type == IPSEC_POLICY_IPSEC &&
2288 (err = parse_ipsecrequests(xp, pol)) < 0)
2291 err = xfrm_policy_insert(pol->sadb_x_policy_dir-1, xp,
2292 hdr->sadb_msg_type != SADB_X_SPDUPDATE);
2294 xfrm_audit_policy_add(xp, err ? 0 : 1,
2295 audit_get_loginuid(current),
2296 audit_get_sessionid(current), 0);
2301 if (hdr->sadb_msg_type == SADB_X_SPDUPDATE)
2302 c.event = XFRM_MSG_UPDPOLICY;
2304 c.event = XFRM_MSG_NEWPOLICY;
2306 c.seq = hdr->sadb_msg_seq;
2307 c.pid = hdr->sadb_msg_pid;
2309 km_policy_notify(xp, pol->sadb_x_policy_dir-1, &c);
2315 xfrm_policy_destroy(xp);
2319 static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
2321 struct net *net = sock_net(sk);
2323 struct sadb_address *sa;
2324 struct sadb_x_policy *pol;
2325 struct xfrm_policy *xp;
2326 struct xfrm_selector sel;
2328 struct sadb_x_sec_ctx *sec_ctx;
2329 struct xfrm_sec_ctx *pol_ctx = NULL;
2331 if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
2332 ext_hdrs[SADB_EXT_ADDRESS_DST-1]) ||
2333 !ext_hdrs[SADB_X_EXT_POLICY-1])
2336 pol = ext_hdrs[SADB_X_EXT_POLICY-1];
2337 if (!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir >= IPSEC_DIR_MAX)
2340 memset(&sel, 0, sizeof(sel));
2342 sa = ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
2343 sel.family = pfkey_sadb_addr2xfrm_addr(sa, &sel.saddr);
2344 sel.prefixlen_s = sa->sadb_address_prefixlen;
2345 sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto);
2346 sel.sport = ((struct sockaddr_in *)(sa+1))->sin_port;
2348 sel.sport_mask = htons(0xffff);
2350 sa = ext_hdrs[SADB_EXT_ADDRESS_DST-1],
2351 pfkey_sadb_addr2xfrm_addr(sa, &sel.daddr);
2352 sel.prefixlen_d = sa->sadb_address_prefixlen;
2353 sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto);
2354 sel.dport = ((struct sockaddr_in *)(sa+1))->sin_port;
2356 sel.dport_mask = htons(0xffff);
2358 sec_ctx = (struct sadb_x_sec_ctx *) ext_hdrs[SADB_X_EXT_SEC_CTX-1];
2359 if (sec_ctx != NULL) {
2360 struct xfrm_user_sec_ctx *uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx);
2365 err = security_xfrm_policy_alloc(&pol_ctx, uctx);
2371 xp = xfrm_policy_bysel_ctx(net, XFRM_POLICY_TYPE_MAIN,
2372 pol->sadb_x_policy_dir - 1, &sel, pol_ctx,
2374 security_xfrm_policy_free(pol_ctx);
2378 xfrm_audit_policy_delete(xp, err ? 0 : 1,
2379 audit_get_loginuid(current),
2380 audit_get_sessionid(current), 0);
2385 c.seq = hdr->sadb_msg_seq;
2386 c.pid = hdr->sadb_msg_pid;
2388 c.event = XFRM_MSG_DELPOLICY;
2389 km_policy_notify(xp, pol->sadb_x_policy_dir-1, &c);
2396 static int key_pol_get_resp(struct sock *sk, struct xfrm_policy *xp, struct sadb_msg *hdr, int dir)
2399 struct sk_buff *out_skb;
2400 struct sadb_msg *out_hdr;
2403 out_skb = pfkey_xfrm_policy2msg_prep(xp);
2404 if (IS_ERR(out_skb)) {
2405 err = PTR_ERR(out_skb);
2408 err = pfkey_xfrm_policy2msg(out_skb, xp, dir);
2412 out_hdr = (struct sadb_msg *) out_skb->data;
2413 out_hdr->sadb_msg_version = hdr->sadb_msg_version;
2414 out_hdr->sadb_msg_type = hdr->sadb_msg_type;
2415 out_hdr->sadb_msg_satype = 0;
2416 out_hdr->sadb_msg_errno = 0;
2417 out_hdr->sadb_msg_seq = hdr->sadb_msg_seq;
2418 out_hdr->sadb_msg_pid = hdr->sadb_msg_pid;
2419 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ONE, sk, xp_net(xp));
2426 #ifdef CONFIG_NET_KEY_MIGRATE
2427 static int pfkey_sockaddr_pair_size(sa_family_t family)
2429 return PFKEY_ALIGN8(pfkey_sockaddr_len(family) * 2);
2432 static int parse_sockaddr_pair(struct sockaddr *sa, int ext_len,
2433 xfrm_address_t *saddr, xfrm_address_t *daddr,
2438 if (ext_len < pfkey_sockaddr_pair_size(sa->sa_family))
2441 af = pfkey_sockaddr_extract(sa, saddr);
2445 socklen = pfkey_sockaddr_len(af);
2446 if (pfkey_sockaddr_extract((struct sockaddr *) (((u8 *)sa) + socklen),
2454 static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest *rq1, int len,
2455 struct xfrm_migrate *m)
2458 struct sadb_x_ipsecrequest *rq2;
2461 if (len <= sizeof(struct sadb_x_ipsecrequest) ||
2462 len < rq1->sadb_x_ipsecrequest_len)
2466 err = parse_sockaddr_pair((struct sockaddr *)(rq1 + 1),
2467 rq1->sadb_x_ipsecrequest_len,
2468 &m->old_saddr, &m->old_daddr,
2473 rq2 = (struct sadb_x_ipsecrequest *)((u8 *)rq1 + rq1->sadb_x_ipsecrequest_len);
2474 len -= rq1->sadb_x_ipsecrequest_len;
2476 if (len <= sizeof(struct sadb_x_ipsecrequest) ||
2477 len < rq2->sadb_x_ipsecrequest_len)
2481 err = parse_sockaddr_pair((struct sockaddr *)(rq2 + 1),
2482 rq2->sadb_x_ipsecrequest_len,
2483 &m->new_saddr, &m->new_daddr,
2488 if (rq1->sadb_x_ipsecrequest_proto != rq2->sadb_x_ipsecrequest_proto ||
2489 rq1->sadb_x_ipsecrequest_mode != rq2->sadb_x_ipsecrequest_mode ||
2490 rq1->sadb_x_ipsecrequest_reqid != rq2->sadb_x_ipsecrequest_reqid)
2493 m->proto = rq1->sadb_x_ipsecrequest_proto;
2494 if ((mode = pfkey_mode_to_xfrm(rq1->sadb_x_ipsecrequest_mode)) < 0)
2497 m->reqid = rq1->sadb_x_ipsecrequest_reqid;
2499 return ((int)(rq1->sadb_x_ipsecrequest_len +
2500 rq2->sadb_x_ipsecrequest_len));
2503 static int pfkey_migrate(struct sock *sk, struct sk_buff *skb,
2504 struct sadb_msg *hdr, void **ext_hdrs)
2506 int i, len, ret, err = -EINVAL;
2508 struct sadb_address *sa;
2509 struct sadb_x_kmaddress *kma;
2510 struct sadb_x_policy *pol;
2511 struct sadb_x_ipsecrequest *rq;
2512 struct xfrm_selector sel;
2513 struct xfrm_migrate m[XFRM_MAX_DEPTH];
2514 struct xfrm_kmaddress k;
2516 if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC - 1],
2517 ext_hdrs[SADB_EXT_ADDRESS_DST - 1]) ||
2518 !ext_hdrs[SADB_X_EXT_POLICY - 1]) {
2523 kma = ext_hdrs[SADB_X_EXT_KMADDRESS - 1];
2524 pol = ext_hdrs[SADB_X_EXT_POLICY - 1];
2526 if (pol->sadb_x_policy_dir >= IPSEC_DIR_MAX) {
2532 /* convert sadb_x_kmaddress to xfrm_kmaddress */
2533 k.reserved = kma->sadb_x_kmaddress_reserved;
2534 ret = parse_sockaddr_pair((struct sockaddr *)(kma + 1),
2535 8*(kma->sadb_x_kmaddress_len) - sizeof(*kma),
2536 &k.local, &k.remote, &k.family);
2543 dir = pol->sadb_x_policy_dir - 1;
2544 memset(&sel, 0, sizeof(sel));
2546 /* set source address info of selector */
2547 sa = ext_hdrs[SADB_EXT_ADDRESS_SRC - 1];
2548 sel.family = pfkey_sadb_addr2xfrm_addr(sa, &sel.saddr);
2549 sel.prefixlen_s = sa->sadb_address_prefixlen;
2550 sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto);
2551 sel.sport = ((struct sockaddr_in *)(sa + 1))->sin_port;
2553 sel.sport_mask = htons(0xffff);
2555 /* set destination address info of selector */
2556 sa = ext_hdrs[SADB_EXT_ADDRESS_DST - 1],
2557 pfkey_sadb_addr2xfrm_addr(sa, &sel.daddr);
2558 sel.prefixlen_d = sa->sadb_address_prefixlen;
2559 sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto);
2560 sel.dport = ((struct sockaddr_in *)(sa + 1))->sin_port;
2562 sel.dport_mask = htons(0xffff);
2564 rq = (struct sadb_x_ipsecrequest *)(pol + 1);
2566 /* extract ipsecrequests */
2568 len = pol->sadb_x_policy_len * 8 - sizeof(struct sadb_x_policy);
2570 while (len > 0 && i < XFRM_MAX_DEPTH) {
2571 ret = ipsecrequests_to_migrate(rq, len, &m[i]);
2576 rq = (struct sadb_x_ipsecrequest *)((u8 *)rq + ret);
2582 if (!i || len > 0) {
2587 return xfrm_migrate(&sel, dir, XFRM_POLICY_TYPE_MAIN, m, i,
2594 static int pfkey_migrate(struct sock *sk, struct sk_buff *skb,
2595 struct sadb_msg *hdr, void **ext_hdrs)
2597 return -ENOPROTOOPT;
2602 static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
2604 struct net *net = sock_net(sk);
2606 int err = 0, delete;
2607 struct sadb_x_policy *pol;
2608 struct xfrm_policy *xp;
2611 if ((pol = ext_hdrs[SADB_X_EXT_POLICY-1]) == NULL)
2614 dir = xfrm_policy_id2dir(pol->sadb_x_policy_id);
2615 if (dir >= XFRM_POLICY_MAX)
2618 delete = (hdr->sadb_msg_type == SADB_X_SPDDELETE2);
2619 xp = xfrm_policy_byid(net, XFRM_POLICY_TYPE_MAIN, dir,
2620 pol->sadb_x_policy_id, delete, &err);
2625 xfrm_audit_policy_delete(xp, err ? 0 : 1,
2626 audit_get_loginuid(current),
2627 audit_get_sessionid(current), 0);
2631 c.seq = hdr->sadb_msg_seq;
2632 c.pid = hdr->sadb_msg_pid;
2634 c.event = XFRM_MSG_DELPOLICY;
2635 km_policy_notify(xp, dir, &c);
2637 err = key_pol_get_resp(sk, xp, hdr, dir);
2645 static int dump_sp(struct xfrm_policy *xp, int dir, int count, void *ptr)
2647 struct pfkey_sock *pfk = ptr;
2648 struct sk_buff *out_skb;
2649 struct sadb_msg *out_hdr;
2652 if (!pfkey_can_dump(&pfk->sk))
2655 out_skb = pfkey_xfrm_policy2msg_prep(xp);
2656 if (IS_ERR(out_skb))
2657 return PTR_ERR(out_skb);
2659 err = pfkey_xfrm_policy2msg(out_skb, xp, dir);
2663 out_hdr = (struct sadb_msg *) out_skb->data;
2664 out_hdr->sadb_msg_version = pfk->dump.msg_version;
2665 out_hdr->sadb_msg_type = SADB_X_SPDDUMP;
2666 out_hdr->sadb_msg_satype = SADB_SATYPE_UNSPEC;
2667 out_hdr->sadb_msg_errno = 0;
2668 out_hdr->sadb_msg_seq = count + 1;
2669 out_hdr->sadb_msg_pid = pfk->dump.msg_pid;
2672 pfkey_broadcast(pfk->dump.skb, GFP_ATOMIC, BROADCAST_ONE,
2673 &pfk->sk, sock_net(&pfk->sk));
2674 pfk->dump.skb = out_skb;
2679 static int pfkey_dump_sp(struct pfkey_sock *pfk)
2681 struct net *net = sock_net(&pfk->sk);
2682 return xfrm_policy_walk(net, &pfk->dump.u.policy, dump_sp, (void *) pfk);
2685 static void pfkey_dump_sp_done(struct pfkey_sock *pfk)
2687 xfrm_policy_walk_done(&pfk->dump.u.policy);
2690 static int pfkey_spddump(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
2692 struct pfkey_sock *pfk = pfkey_sk(sk);
2694 if (pfk->dump.dump != NULL)
2697 pfk->dump.msg_version = hdr->sadb_msg_version;
2698 pfk->dump.msg_pid = hdr->sadb_msg_pid;
2699 pfk->dump.dump = pfkey_dump_sp;
2700 pfk->dump.done = pfkey_dump_sp_done;
2701 xfrm_policy_walk_init(&pfk->dump.u.policy, XFRM_POLICY_TYPE_MAIN);
2703 return pfkey_do_dump(pfk);
2706 static int key_notify_policy_flush(struct km_event *c)
2708 struct sk_buff *skb_out;
2709 struct sadb_msg *hdr;
2711 skb_out = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_ATOMIC);
2714 hdr = (struct sadb_msg *) skb_put(skb_out, sizeof(struct sadb_msg));
2715 hdr->sadb_msg_type = SADB_X_SPDFLUSH;
2716 hdr->sadb_msg_seq = c->seq;
2717 hdr->sadb_msg_pid = c->pid;
2718 hdr->sadb_msg_version = PF_KEY_V2;
2719 hdr->sadb_msg_errno = (uint8_t) 0;
2720 hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t));
2721 pfkey_broadcast(skb_out, GFP_ATOMIC, BROADCAST_ALL, NULL, c->net);
2726 static int pfkey_spdflush(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
2728 struct net *net = sock_net(sk);
2730 struct xfrm_audit audit_info;
2733 audit_info.loginuid = audit_get_loginuid(current);
2734 audit_info.sessionid = audit_get_sessionid(current);
2735 audit_info.secid = 0;
2736 err = xfrm_policy_flush(net, XFRM_POLICY_TYPE_MAIN, &audit_info);
2737 err2 = unicast_flush_resp(sk, hdr);
2739 return err ? err : err2;
2741 c.data.type = XFRM_POLICY_TYPE_MAIN;
2742 c.event = XFRM_MSG_FLUSHPOLICY;
2743 c.pid = hdr->sadb_msg_pid;
2744 c.seq = hdr->sadb_msg_seq;
2746 km_policy_notify(NULL, 0, &c);
2751 typedef int (*pfkey_handler)(struct sock *sk, struct sk_buff *skb,
2752 struct sadb_msg *hdr, void **ext_hdrs);
2753 static pfkey_handler pfkey_funcs[SADB_MAX + 1] = {
2754 [SADB_RESERVED] = pfkey_reserved,
2755 [SADB_GETSPI] = pfkey_getspi,
2756 [SADB_UPDATE] = pfkey_add,
2757 [SADB_ADD] = pfkey_add,
2758 [SADB_DELETE] = pfkey_delete,
2759 [SADB_GET] = pfkey_get,
2760 [SADB_ACQUIRE] = pfkey_acquire,
2761 [SADB_REGISTER] = pfkey_register,
2762 [SADB_EXPIRE] = NULL,
2763 [SADB_FLUSH] = pfkey_flush,
2764 [SADB_DUMP] = pfkey_dump,
2765 [SADB_X_PROMISC] = pfkey_promisc,
2766 [SADB_X_PCHANGE] = NULL,
2767 [SADB_X_SPDUPDATE] = pfkey_spdadd,
2768 [SADB_X_SPDADD] = pfkey_spdadd,
2769 [SADB_X_SPDDELETE] = pfkey_spddelete,
2770 [SADB_X_SPDGET] = pfkey_spdget,
2771 [SADB_X_SPDACQUIRE] = NULL,
2772 [SADB_X_SPDDUMP] = pfkey_spddump,
2773 [SADB_X_SPDFLUSH] = pfkey_spdflush,
2774 [SADB_X_SPDSETIDX] = pfkey_spdadd,
2775 [SADB_X_SPDDELETE2] = pfkey_spdget,
2776 [SADB_X_MIGRATE] = pfkey_migrate,
2779 static int pfkey_process(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr)
2781 void *ext_hdrs[SADB_EXT_MAX];
2784 pfkey_broadcast(skb_clone(skb, GFP_KERNEL), GFP_KERNEL,
2785 BROADCAST_PROMISC_ONLY, NULL, sock_net(sk));
2787 memset(ext_hdrs, 0, sizeof(ext_hdrs));
2788 err = parse_exthdrs(skb, hdr, ext_hdrs);
2791 if (pfkey_funcs[hdr->sadb_msg_type])
2792 err = pfkey_funcs[hdr->sadb_msg_type](sk, skb, hdr, ext_hdrs);
2797 static struct sadb_msg *pfkey_get_base_msg(struct sk_buff *skb, int *errp)
2799 struct sadb_msg *hdr = NULL;
2801 if (skb->len < sizeof(*hdr)) {
2804 hdr = (struct sadb_msg *) skb->data;
2805 if (hdr->sadb_msg_version != PF_KEY_V2 ||
2806 hdr->sadb_msg_reserved != 0 ||
2807 (hdr->sadb_msg_type <= SADB_RESERVED ||
2808 hdr->sadb_msg_type > SADB_MAX)) {
2811 } else if (hdr->sadb_msg_len != (skb->len /
2812 sizeof(uint64_t)) ||
2813 hdr->sadb_msg_len < (sizeof(struct sadb_msg) /
2814 sizeof(uint64_t))) {
2824 static inline int aalg_tmpl_set(struct xfrm_tmpl *t, struct xfrm_algo_desc *d)
2826 unsigned int id = d->desc.sadb_alg_id;
2828 if (id >= sizeof(t->aalgos) * 8)
2831 return (t->aalgos >> id) & 1;
2834 static inline int ealg_tmpl_set(struct xfrm_tmpl *t, struct xfrm_algo_desc *d)
2836 unsigned int id = d->desc.sadb_alg_id;
2838 if (id >= sizeof(t->ealgos) * 8)
2841 return (t->ealgos >> id) & 1;
2844 static int count_ah_combs(struct xfrm_tmpl *t)
2848 for (i = 0; ; i++) {
2849 struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i);
2852 if (aalg_tmpl_set(t, aalg) && aalg->available)
2853 sz += sizeof(struct sadb_comb);
2855 return sz + sizeof(struct sadb_prop);
2858 static int count_esp_combs(struct xfrm_tmpl *t)
2862 for (i = 0; ; i++) {
2863 struct xfrm_algo_desc *ealg = xfrm_ealg_get_byidx(i);
2867 if (!(ealg_tmpl_set(t, ealg) && ealg->available))
2870 for (k = 1; ; k++) {
2871 struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(k);
2875 if (aalg_tmpl_set(t, aalg) && aalg->available)
2876 sz += sizeof(struct sadb_comb);
2879 return sz + sizeof(struct sadb_prop);
2882 static void dump_ah_combs(struct sk_buff *skb, struct xfrm_tmpl *t)
2884 struct sadb_prop *p;
2887 p = (struct sadb_prop*)skb_put(skb, sizeof(struct sadb_prop));
2888 p->sadb_prop_len = sizeof(struct sadb_prop)/8;
2889 p->sadb_prop_exttype = SADB_EXT_PROPOSAL;
2890 p->sadb_prop_replay = 32;
2891 memset(p->sadb_prop_reserved, 0, sizeof(p->sadb_prop_reserved));
2893 for (i = 0; ; i++) {
2894 struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i);
2898 if (aalg_tmpl_set(t, aalg) && aalg->available) {
2899 struct sadb_comb *c;
2900 c = (struct sadb_comb*)skb_put(skb, sizeof(struct sadb_comb));
2901 memset(c, 0, sizeof(*c));
2902 p->sadb_prop_len += sizeof(struct sadb_comb)/8;
2903 c->sadb_comb_auth = aalg->desc.sadb_alg_id;
2904 c->sadb_comb_auth_minbits = aalg->desc.sadb_alg_minbits;
2905 c->sadb_comb_auth_maxbits = aalg->desc.sadb_alg_maxbits;
2906 c->sadb_comb_hard_addtime = 24*60*60;
2907 c->sadb_comb_soft_addtime = 20*60*60;
2908 c->sadb_comb_hard_usetime = 8*60*60;
2909 c->sadb_comb_soft_usetime = 7*60*60;
2914 static void dump_esp_combs(struct sk_buff *skb, struct xfrm_tmpl *t)
2916 struct sadb_prop *p;
2919 p = (struct sadb_prop*)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));
2926 struct xfrm_algo_desc *ealg = xfrm_ealg_get_byidx(i);
2930 if (!(ealg_tmpl_set(t, ealg) && ealg->available))
2933 for (k = 1; ; k++) {
2934 struct sadb_comb *c;
2935 struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(k);
2938 if (!(aalg_tmpl_set(t, aalg) && aalg->available))
2940 c = (struct sadb_comb*)skb_put(skb, sizeof(struct sadb_comb));
2941 memset(c, 0, sizeof(*c));
2942 p->sadb_prop_len += sizeof(struct sadb_comb)/8;
2943 c->sadb_comb_auth = aalg->desc.sadb_alg_id;
2944 c->sadb_comb_auth_minbits = aalg->desc.sadb_alg_minbits;
2945 c->sadb_comb_auth_maxbits = aalg->desc.sadb_alg_maxbits;
2946 c->sadb_comb_encrypt = ealg->desc.sadb_alg_id;
2947 c->sadb_comb_encrypt_minbits = ealg->desc.sadb_alg_minbits;
2948 c->sadb_comb_encrypt_maxbits = ealg->desc.sadb_alg_maxbits;
2949 c->sadb_comb_hard_addtime = 24*60*60;
2950 c->sadb_comb_soft_addtime = 20*60*60;
2951 c->sadb_comb_hard_usetime = 8*60*60;
2952 c->sadb_comb_soft_usetime = 7*60*60;
2957 static int key_notify_policy_expire(struct xfrm_policy *xp, struct km_event *c)
2962 static int key_notify_sa_expire(struct xfrm_state *x, struct km_event *c)
2964 struct sk_buff *out_skb;
2965 struct sadb_msg *out_hdr;
2969 hard = c->data.hard;
2975 out_skb = pfkey_xfrm_state2msg_expire(x, hsc);
2976 if (IS_ERR(out_skb))
2977 return PTR_ERR(out_skb);
2979 out_hdr = (struct sadb_msg *) out_skb->data;
2980 out_hdr->sadb_msg_version = PF_KEY_V2;
2981 out_hdr->sadb_msg_type = SADB_EXPIRE;
2982 out_hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto);
2983 out_hdr->sadb_msg_errno = 0;
2984 out_hdr->sadb_msg_reserved = 0;
2985 out_hdr->sadb_msg_seq = 0;
2986 out_hdr->sadb_msg_pid = 0;
2988 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL, xs_net(x));
2992 static int pfkey_send_notify(struct xfrm_state *x, struct km_event *c)
2994 struct net *net = x ? xs_net(x) : c->net;
2995 struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
2997 if (atomic_read(&net_pfkey->socks_nr) == 0)
3001 case XFRM_MSG_EXPIRE:
3002 return key_notify_sa_expire(x, c);
3003 case XFRM_MSG_DELSA:
3004 case XFRM_MSG_NEWSA:
3005 case XFRM_MSG_UPDSA:
3006 return key_notify_sa(x, c);
3007 case XFRM_MSG_FLUSHSA:
3008 return key_notify_sa_flush(c);
3009 case XFRM_MSG_NEWAE: /* not yet supported */
3012 printk("pfkey: Unknown SA event %d\n", c->event);
3019 static int pfkey_send_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c)
3021 if (xp && xp->type != XFRM_POLICY_TYPE_MAIN)
3025 case XFRM_MSG_POLEXPIRE:
3026 return key_notify_policy_expire(xp, c);
3027 case XFRM_MSG_DELPOLICY:
3028 case XFRM_MSG_NEWPOLICY:
3029 case XFRM_MSG_UPDPOLICY:
3030 return key_notify_policy(xp, dir, c);
3031 case XFRM_MSG_FLUSHPOLICY:
3032 if (c->data.type != XFRM_POLICY_TYPE_MAIN)
3034 return key_notify_policy_flush(c);
3036 printk("pfkey: Unknown policy event %d\n", c->event);
3043 static u32 get_acqseq(void)
3046 static atomic_t acqseq;
3049 res = atomic_inc_return(&acqseq);
3054 static int pfkey_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *xp, int dir)
3056 struct sk_buff *skb;
3057 struct sadb_msg *hdr;
3058 struct sadb_address *addr;
3059 struct sadb_x_policy *pol;
3062 struct sadb_x_sec_ctx *sec_ctx;
3063 struct xfrm_sec_ctx *xfrm_ctx;
3066 sockaddr_size = pfkey_sockaddr_size(x->props.family);
3070 size = sizeof(struct sadb_msg) +
3071 (sizeof(struct sadb_address) * 2) +
3072 (sockaddr_size * 2) +
3073 sizeof(struct sadb_x_policy);
3075 if (x->id.proto == IPPROTO_AH)
3076 size += count_ah_combs(t);
3077 else if (x->id.proto == IPPROTO_ESP)
3078 size += count_esp_combs(t);
3080 if ((xfrm_ctx = x->security)) {
3081 ctx_size = PFKEY_ALIGN8(xfrm_ctx->ctx_len);
3082 size += sizeof(struct sadb_x_sec_ctx) + ctx_size;
3085 skb = alloc_skb(size + 16, GFP_ATOMIC);
3089 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
3090 hdr->sadb_msg_version = PF_KEY_V2;
3091 hdr->sadb_msg_type = SADB_ACQUIRE;
3092 hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto);
3093 hdr->sadb_msg_len = size / sizeof(uint64_t);
3094 hdr->sadb_msg_errno = 0;
3095 hdr->sadb_msg_reserved = 0;
3096 hdr->sadb_msg_seq = x->km.seq = get_acqseq();
3097 hdr->sadb_msg_pid = 0;
3100 addr = (struct sadb_address*) skb_put(skb,
3101 sizeof(struct sadb_address)+sockaddr_size);
3102 addr->sadb_address_len =
3103 (sizeof(struct sadb_address)+sockaddr_size)/
3105 addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
3106 addr->sadb_address_proto = 0;
3107 addr->sadb_address_reserved = 0;
3108 addr->sadb_address_prefixlen =
3109 pfkey_sockaddr_fill(&x->props.saddr, 0,
3110 (struct sockaddr *) (addr + 1),
3112 if (!addr->sadb_address_prefixlen)
3116 addr = (struct sadb_address*) skb_put(skb,
3117 sizeof(struct sadb_address)+sockaddr_size);
3118 addr->sadb_address_len =
3119 (sizeof(struct sadb_address)+sockaddr_size)/
3121 addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST;
3122 addr->sadb_address_proto = 0;
3123 addr->sadb_address_reserved = 0;
3124 addr->sadb_address_prefixlen =
3125 pfkey_sockaddr_fill(&x->id.daddr, 0,
3126 (struct sockaddr *) (addr + 1),
3128 if (!addr->sadb_address_prefixlen)
3131 pol = (struct sadb_x_policy *) skb_put(skb, sizeof(struct sadb_x_policy));
3132 pol->sadb_x_policy_len = sizeof(struct sadb_x_policy)/sizeof(uint64_t);
3133 pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
3134 pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
3135 pol->sadb_x_policy_dir = dir+1;
3136 pol->sadb_x_policy_id = xp->index;
3138 /* Set sadb_comb's. */
3139 if (x->id.proto == IPPROTO_AH)
3140 dump_ah_combs(skb, t);
3141 else if (x->id.proto == IPPROTO_ESP)
3142 dump_esp_combs(skb, t);
3144 /* security context */
3146 sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb,
3147 sizeof(struct sadb_x_sec_ctx) + ctx_size);
3148 sec_ctx->sadb_x_sec_len =
3149 (sizeof(struct sadb_x_sec_ctx) + ctx_size) / sizeof(uint64_t);
3150 sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX;
3151 sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi;
3152 sec_ctx->sadb_x_ctx_alg = xfrm_ctx->ctx_alg;
3153 sec_ctx->sadb_x_ctx_len = xfrm_ctx->ctx_len;
3154 memcpy(sec_ctx + 1, xfrm_ctx->ctx_str,
3158 return pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL, xs_net(x));
3161 static struct xfrm_policy *pfkey_compile_policy(struct sock *sk, int opt,
3162 u8 *data, int len, int *dir)
3164 struct net *net = sock_net(sk);
3165 struct xfrm_policy *xp;
3166 struct sadb_x_policy *pol = (struct sadb_x_policy*)data;
3167 struct sadb_x_sec_ctx *sec_ctx;
3169 switch (sk->sk_family) {
3171 if (opt != IP_IPSEC_POLICY) {
3176 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
3178 if (opt != IPV6_IPSEC_POLICY) {
3191 if (len < sizeof(struct sadb_x_policy) ||
3192 pol->sadb_x_policy_len*8 > len ||
3193 pol->sadb_x_policy_type > IPSEC_POLICY_BYPASS ||
3194 (!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir > IPSEC_DIR_OUTBOUND))
3197 xp = xfrm_policy_alloc(net, GFP_ATOMIC);
3203 xp->action = (pol->sadb_x_policy_type == IPSEC_POLICY_DISCARD ?
3204 XFRM_POLICY_BLOCK : XFRM_POLICY_ALLOW);
3206 xp->lft.soft_byte_limit = XFRM_INF;
3207 xp->lft.hard_byte_limit = XFRM_INF;
3208 xp->lft.soft_packet_limit = XFRM_INF;
3209 xp->lft.hard_packet_limit = XFRM_INF;
3210 xp->family = sk->sk_family;
3213 if (pol->sadb_x_policy_type == IPSEC_POLICY_IPSEC &&
3214 (*dir = parse_ipsecrequests(xp, pol)) < 0)
3217 /* security context too */
3218 if (len >= (pol->sadb_x_policy_len*8 +
3219 sizeof(struct sadb_x_sec_ctx))) {
3220 char *p = (char *)pol;
3221 struct xfrm_user_sec_ctx *uctx;
3223 p += pol->sadb_x_policy_len*8;
3224 sec_ctx = (struct sadb_x_sec_ctx *)p;
3225 if (len < pol->sadb_x_policy_len*8 +
3226 sec_ctx->sadb_x_sec_len) {
3230 if ((*dir = verify_sec_ctx_len(p)))
3232 uctx = pfkey_sadb2xfrm_user_sec_ctx(sec_ctx);
3233 *dir = security_xfrm_policy_alloc(&xp->security, uctx);
3240 *dir = pol->sadb_x_policy_dir-1;
3245 xfrm_policy_destroy(xp);
3249 static int pfkey_send_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport)
3251 struct sk_buff *skb;
3252 struct sadb_msg *hdr;
3254 struct sadb_address *addr;
3255 struct sadb_x_nat_t_port *n_port;
3258 __u8 satype = (x->id.proto == IPPROTO_ESP ? SADB_SATYPE_ESP : 0);
3259 struct xfrm_encap_tmpl *natt = NULL;
3261 sockaddr_size = pfkey_sockaddr_size(x->props.family);
3273 /* Build an SADB_X_NAT_T_NEW_MAPPING message:
3275 * HDR | SA | ADDRESS_SRC (old addr) | NAT_T_SPORT (old port) |
3276 * ADDRESS_DST (new addr) | NAT_T_DPORT (new port)
3279 size = sizeof(struct sadb_msg) +
3280 sizeof(struct sadb_sa) +
3281 (sizeof(struct sadb_address) * 2) +
3282 (sockaddr_size * 2) +
3283 (sizeof(struct sadb_x_nat_t_port) * 2);
3285 skb = alloc_skb(size + 16, GFP_ATOMIC);
3289 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
3290 hdr->sadb_msg_version = PF_KEY_V2;
3291 hdr->sadb_msg_type = SADB_X_NAT_T_NEW_MAPPING;
3292 hdr->sadb_msg_satype = satype;
3293 hdr->sadb_msg_len = size / sizeof(uint64_t);
3294 hdr->sadb_msg_errno = 0;
3295 hdr->sadb_msg_reserved = 0;
3296 hdr->sadb_msg_seq = x->km.seq = get_acqseq();
3297 hdr->sadb_msg_pid = 0;
3300 sa = (struct sadb_sa *) skb_put(skb, sizeof(struct sadb_sa));
3301 sa->sadb_sa_len = sizeof(struct sadb_sa)/sizeof(uint64_t);
3302 sa->sadb_sa_exttype = SADB_EXT_SA;
3303 sa->sadb_sa_spi = x->id.spi;
3304 sa->sadb_sa_replay = 0;
3305 sa->sadb_sa_state = 0;
3306 sa->sadb_sa_auth = 0;
3307 sa->sadb_sa_encrypt = 0;
3308 sa->sadb_sa_flags = 0;
3310 /* ADDRESS_SRC (old addr) */
3311 addr = (struct sadb_address*)
3312 skb_put(skb, sizeof(struct sadb_address)+sockaddr_size);
3313 addr->sadb_address_len =
3314 (sizeof(struct sadb_address)+sockaddr_size)/
3316 addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
3317 addr->sadb_address_proto = 0;
3318 addr->sadb_address_reserved = 0;
3319 addr->sadb_address_prefixlen =
3320 pfkey_sockaddr_fill(&x->props.saddr, 0,
3321 (struct sockaddr *) (addr + 1),
3323 if (!addr->sadb_address_prefixlen)
3326 /* NAT_T_SPORT (old port) */
3327 n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
3328 n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
3329 n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT;
3330 n_port->sadb_x_nat_t_port_port = natt->encap_sport;
3331 n_port->sadb_x_nat_t_port_reserved = 0;
3333 /* ADDRESS_DST (new addr) */
3334 addr = (struct sadb_address*)
3335 skb_put(skb, sizeof(struct sadb_address)+sockaddr_size);
3336 addr->sadb_address_len =
3337 (sizeof(struct sadb_address)+sockaddr_size)/
3339 addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST;
3340 addr->sadb_address_proto = 0;
3341 addr->sadb_address_reserved = 0;
3342 addr->sadb_address_prefixlen =
3343 pfkey_sockaddr_fill(ipaddr, 0,
3344 (struct sockaddr *) (addr + 1),
3346 if (!addr->sadb_address_prefixlen)
3349 /* NAT_T_DPORT (new port) */
3350 n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
3351 n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
3352 n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT;
3353 n_port->sadb_x_nat_t_port_port = sport;
3354 n_port->sadb_x_nat_t_port_reserved = 0;
3356 return pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL, xs_net(x));
3359 #ifdef CONFIG_NET_KEY_MIGRATE
3360 static int set_sadb_address(struct sk_buff *skb, int sasize, int type,
3361 struct xfrm_selector *sel)
3363 struct sadb_address *addr;
3364 addr = (struct sadb_address *)skb_put(skb, sizeof(struct sadb_address) + sasize);
3365 addr->sadb_address_len = (sizeof(struct sadb_address) + sasize)/8;
3366 addr->sadb_address_exttype = type;
3367 addr->sadb_address_proto = sel->proto;
3368 addr->sadb_address_reserved = 0;
3371 case SADB_EXT_ADDRESS_SRC:
3372 addr->sadb_address_prefixlen = sel->prefixlen_s;
3373 pfkey_sockaddr_fill(&sel->saddr, 0,
3374 (struct sockaddr *)(addr + 1),
3377 case SADB_EXT_ADDRESS_DST:
3378 addr->sadb_address_prefixlen = sel->prefixlen_d;
3379 pfkey_sockaddr_fill(&sel->daddr, 0,
3380 (struct sockaddr *)(addr + 1),
3391 static int set_sadb_kmaddress(struct sk_buff *skb, struct xfrm_kmaddress *k)
3393 struct sadb_x_kmaddress *kma;
3395 int family = k->family;
3396 int socklen = pfkey_sockaddr_len(family);
3399 size_req = (sizeof(struct sadb_x_kmaddress) +
3400 pfkey_sockaddr_pair_size(family));
3402 kma = (struct sadb_x_kmaddress *)skb_put(skb, size_req);
3403 memset(kma, 0, size_req);
3404 kma->sadb_x_kmaddress_len = size_req / 8;
3405 kma->sadb_x_kmaddress_exttype = SADB_X_EXT_KMADDRESS;
3406 kma->sadb_x_kmaddress_reserved = k->reserved;
3408 sa = (u8 *)(kma + 1);
3409 if (!pfkey_sockaddr_fill(&k->local, 0, (struct sockaddr *)sa, family) ||
3410 !pfkey_sockaddr_fill(&k->remote, 0, (struct sockaddr *)(sa+socklen), family))
3416 static int set_ipsecrequest(struct sk_buff *skb,
3417 uint8_t proto, uint8_t mode, int level,
3418 uint32_t reqid, uint8_t family,
3419 xfrm_address_t *src, xfrm_address_t *dst)
3421 struct sadb_x_ipsecrequest *rq;
3423 int socklen = pfkey_sockaddr_len(family);
3426 size_req = sizeof(struct sadb_x_ipsecrequest) +
3427 pfkey_sockaddr_pair_size(family);
3429 rq = (struct sadb_x_ipsecrequest *)skb_put(skb, size_req);
3430 memset(rq, 0, size_req);
3431 rq->sadb_x_ipsecrequest_len = size_req;
3432 rq->sadb_x_ipsecrequest_proto = proto;
3433 rq->sadb_x_ipsecrequest_mode = mode;
3434 rq->sadb_x_ipsecrequest_level = level;
3435 rq->sadb_x_ipsecrequest_reqid = reqid;
3437 sa = (u8 *) (rq + 1);
3438 if (!pfkey_sockaddr_fill(src, 0, (struct sockaddr *)sa, family) ||
3439 !pfkey_sockaddr_fill(dst, 0, (struct sockaddr *)(sa + socklen), family))
3446 #ifdef CONFIG_NET_KEY_MIGRATE
3447 static int pfkey_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
3448 struct xfrm_migrate *m, int num_bundles,
3449 struct xfrm_kmaddress *k)
3455 struct sk_buff *skb;
3456 struct sadb_msg *hdr;
3457 struct sadb_x_policy *pol;
3458 struct xfrm_migrate *mp;
3460 if (type != XFRM_POLICY_TYPE_MAIN)
3463 if (num_bundles <= 0 || num_bundles > XFRM_MAX_DEPTH)
3467 /* addresses for KM */
3468 size += PFKEY_ALIGN8(sizeof(struct sadb_x_kmaddress) +
3469 pfkey_sockaddr_pair_size(k->family));
3473 sasize_sel = pfkey_sockaddr_size(sel->family);
3476 size += (sizeof(struct sadb_address) + sasize_sel) * 2;
3479 size_pol += sizeof(struct sadb_x_policy);
3482 for (i = 0, mp = m; i < num_bundles; i++, mp++) {
3483 /* old locator pair */
3484 size_pol += sizeof(struct sadb_x_ipsecrequest) +
3485 pfkey_sockaddr_pair_size(mp->old_family);
3486 /* new locator pair */
3487 size_pol += sizeof(struct sadb_x_ipsecrequest) +
3488 pfkey_sockaddr_pair_size(mp->new_family);
3491 size += sizeof(struct sadb_msg) + size_pol;
3494 skb = alloc_skb(size, GFP_ATOMIC);
3498 hdr = (struct sadb_msg *)skb_put(skb, sizeof(struct sadb_msg));
3499 hdr->sadb_msg_version = PF_KEY_V2;
3500 hdr->sadb_msg_type = SADB_X_MIGRATE;
3501 hdr->sadb_msg_satype = pfkey_proto2satype(m->proto);
3502 hdr->sadb_msg_len = size / 8;
3503 hdr->sadb_msg_errno = 0;
3504 hdr->sadb_msg_reserved = 0;
3505 hdr->sadb_msg_seq = 0;
3506 hdr->sadb_msg_pid = 0;
3508 /* Addresses to be used by KM for negotiation, if ext is available */
3509 if (k != NULL && (set_sadb_kmaddress(skb, k) < 0))
3513 set_sadb_address(skb, sasize_sel, SADB_EXT_ADDRESS_SRC, sel);
3516 set_sadb_address(skb, sasize_sel, SADB_EXT_ADDRESS_DST, sel);
3518 /* policy information */
3519 pol = (struct sadb_x_policy *)skb_put(skb, sizeof(struct sadb_x_policy));
3520 pol->sadb_x_policy_len = size_pol / 8;
3521 pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
3522 pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
3523 pol->sadb_x_policy_dir = dir + 1;
3524 pol->sadb_x_policy_id = 0;
3525 pol->sadb_x_policy_priority = 0;
3527 for (i = 0, mp = m; i < num_bundles; i++, mp++) {
3528 /* old ipsecrequest */
3529 int mode = pfkey_mode_from_xfrm(mp->mode);
3532 if (set_ipsecrequest(skb, mp->proto, mode,
3533 (mp->reqid ? IPSEC_LEVEL_UNIQUE : IPSEC_LEVEL_REQUIRE),
3534 mp->reqid, mp->old_family,
3535 &mp->old_saddr, &mp->old_daddr) < 0)
3538 /* new ipsecrequest */
3539 if (set_ipsecrequest(skb, mp->proto, mode,
3540 (mp->reqid ? IPSEC_LEVEL_UNIQUE : IPSEC_LEVEL_REQUIRE),
3541 mp->reqid, mp->new_family,
3542 &mp->new_saddr, &mp->new_daddr) < 0)
3546 /* broadcast migrate message to sockets */
3547 pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_ALL, NULL, &init_net);
3556 static int pfkey_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
3557 struct xfrm_migrate *m, int num_bundles,
3558 struct xfrm_kmaddress *k)
3560 return -ENOPROTOOPT;
3564 static int pfkey_sendmsg(struct kiocb *kiocb,
3565 struct socket *sock, struct msghdr *msg, size_t len)
3567 struct sock *sk = sock->sk;
3568 struct sk_buff *skb = NULL;
3569 struct sadb_msg *hdr = NULL;
3573 if (msg->msg_flags & MSG_OOB)
3577 if ((unsigned)len > sk->sk_sndbuf - 32)
3581 skb = alloc_skb(len, GFP_KERNEL);
3586 if (memcpy_fromiovec(skb_put(skb,len), msg->msg_iov, len))
3589 hdr = pfkey_get_base_msg(skb, &err);
3593 mutex_lock(&xfrm_cfg_mutex);
3594 err = pfkey_process(sk, skb, hdr);
3595 mutex_unlock(&xfrm_cfg_mutex);
3598 if (err && hdr && pfkey_error(hdr, err, sk) == 0)
3605 static int pfkey_recvmsg(struct kiocb *kiocb,
3606 struct socket *sock, struct msghdr *msg, size_t len,
3609 struct sock *sk = sock->sk;
3610 struct pfkey_sock *pfk = pfkey_sk(sk);
3611 struct sk_buff *skb;
3615 if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC|MSG_CMSG_COMPAT))
3618 msg->msg_namelen = 0;
3619 skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err);
3625 msg->msg_flags |= MSG_TRUNC;
3629 skb_reset_transport_header(skb);
3630 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
3634 sock_recv_ts_and_drops(msg, sk, skb);
3636 err = (flags & MSG_TRUNC) ? skb->len : copied;
3638 if (pfk->dump.dump != NULL &&
3639 3 * atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf)
3643 skb_free_datagram(sk, skb);
3648 static const struct proto_ops pfkey_ops = {
3650 .owner = THIS_MODULE,
3651 /* Operations that make no sense on pfkey sockets. */
3652 .bind = sock_no_bind,
3653 .connect = sock_no_connect,
3654 .socketpair = sock_no_socketpair,
3655 .accept = sock_no_accept,
3656 .getname = sock_no_getname,
3657 .ioctl = sock_no_ioctl,
3658 .listen = sock_no_listen,
3659 .shutdown = sock_no_shutdown,
3660 .setsockopt = sock_no_setsockopt,
3661 .getsockopt = sock_no_getsockopt,
3662 .mmap = sock_no_mmap,
3663 .sendpage = sock_no_sendpage,
3665 /* Now the operations that really occur. */
3666 .release = pfkey_release,
3667 .poll = datagram_poll,
3668 .sendmsg = pfkey_sendmsg,
3669 .recvmsg = pfkey_recvmsg,
3672 static const struct net_proto_family pfkey_family_ops = {
3674 .create = pfkey_create,
3675 .owner = THIS_MODULE,
3678 #ifdef CONFIG_PROC_FS
3679 static int pfkey_seq_show(struct seq_file *f, void *v)
3681 struct sock *s = sk_entry(v);
3683 if (v == SEQ_START_TOKEN)
3684 seq_printf(f ,"sk RefCnt Rmem Wmem User Inode\n");
3686 seq_printf(f ,"%p %-6d %-6u %-6u %-6u %-6lu\n",
3688 atomic_read(&s->sk_refcnt),
3689 sk_rmem_alloc_get(s),
3690 sk_wmem_alloc_get(s),
3697 static void *pfkey_seq_start(struct seq_file *f, loff_t *ppos)
3699 struct net *net = seq_file_net(f);
3700 struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
3702 read_lock(&pfkey_table_lock);
3703 return seq_hlist_start_head(&net_pfkey->table, *ppos);
3706 static void *pfkey_seq_next(struct seq_file *f, void *v, loff_t *ppos)
3708 struct net *net = seq_file_net(f);
3709 struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
3711 return seq_hlist_next(v, &net_pfkey->table, ppos);
3714 static void pfkey_seq_stop(struct seq_file *f, void *v)
3716 read_unlock(&pfkey_table_lock);
3719 static const struct seq_operations pfkey_seq_ops = {
3720 .start = pfkey_seq_start,
3721 .next = pfkey_seq_next,
3722 .stop = pfkey_seq_stop,
3723 .show = pfkey_seq_show,
3726 static int pfkey_seq_open(struct inode *inode, struct file *file)
3728 return seq_open_net(inode, file, &pfkey_seq_ops,
3729 sizeof(struct seq_net_private));
3732 static const struct file_operations pfkey_proc_ops = {
3733 .open = pfkey_seq_open,
3735 .llseek = seq_lseek,
3736 .release = seq_release_net,
3739 static int __net_init pfkey_init_proc(struct net *net)
3741 struct proc_dir_entry *e;
3743 e = proc_net_fops_create(net, "pfkey", 0, &pfkey_proc_ops);
3750 static void __net_exit pfkey_exit_proc(struct net *net)
3752 proc_net_remove(net, "pfkey");
3755 static inline int pfkey_init_proc(struct net *net)
3760 static inline void pfkey_exit_proc(struct net *net)
3765 static struct xfrm_mgr pfkeyv2_mgr =
3768 .notify = pfkey_send_notify,
3769 .acquire = pfkey_send_acquire,
3770 .compile_policy = pfkey_compile_policy,
3771 .new_mapping = pfkey_send_new_mapping,
3772 .notify_policy = pfkey_send_policy_notify,
3773 .migrate = pfkey_send_migrate,
3776 static int __net_init pfkey_net_init(struct net *net)
3778 struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
3781 INIT_HLIST_HEAD(&net_pfkey->table);
3782 atomic_set(&net_pfkey->socks_nr, 0);
3784 rv = pfkey_init_proc(net);
3789 static void __net_exit pfkey_net_exit(struct net *net)
3791 struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
3793 pfkey_exit_proc(net);
3794 BUG_ON(!hlist_empty(&net_pfkey->table));
3797 static struct pernet_operations pfkey_net_ops = {
3798 .init = pfkey_net_init,
3799 .exit = pfkey_net_exit,
3800 .id = &pfkey_net_id,
3801 .size = sizeof(struct netns_pfkey),
3804 static void __exit ipsec_pfkey_exit(void)
3806 xfrm_unregister_km(&pfkeyv2_mgr);
3807 sock_unregister(PF_KEY);
3808 unregister_pernet_subsys(&pfkey_net_ops);
3809 proto_unregister(&key_proto);
3812 static int __init ipsec_pfkey_init(void)
3814 int err = proto_register(&key_proto, 0);
3819 err = register_pernet_subsys(&pfkey_net_ops);
3821 goto out_unregister_key_proto;
3822 err = sock_register(&pfkey_family_ops);
3824 goto out_unregister_pernet;
3825 err = xfrm_register_km(&pfkeyv2_mgr);
3827 goto out_sock_unregister;
3831 out_sock_unregister:
3832 sock_unregister(PF_KEY);
3833 out_unregister_pernet:
3834 unregister_pernet_subsys(&pfkey_net_ops);
3835 out_unregister_key_proto:
3836 proto_unregister(&key_proto);
3840 module_init(ipsec_pfkey_init);
3841 module_exit(ipsec_pfkey_exit);
3842 MODULE_LICENSE("GPL");
3843 MODULE_ALIAS_NETPROTO(PF_KEY);