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/config.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>
33 #define _X2KEY(x) ((x) == XFRM_INF ? 0 : (x))
34 #define _KEY2X(x) ((x) == 0 ? XFRM_INF : (x))
37 /* List of all pfkey sockets. */
38 HLIST_HEAD(pfkey_table);
39 static DECLARE_WAIT_QUEUE_HEAD(pfkey_table_wait);
40 static rwlock_t pfkey_table_lock = RW_LOCK_UNLOCKED;
41 static atomic_t pfkey_table_users = ATOMIC_INIT(0);
43 static atomic_t pfkey_socks_nr = ATOMIC_INIT(0);
49 #define pfkey_sk(__sk) ((struct pfkey_opt *)(__sk)->sk_protinfo)
51 static void pfkey_sock_destruct(struct sock *sk)
53 skb_queue_purge(&sk->sk_receive_queue);
55 if (!sock_flag(sk, SOCK_DEAD)) {
56 printk("Attempt to release alive pfkey socket: %p\n", sk);
60 BUG_TRAP(!atomic_read(&sk->sk_rmem_alloc));
61 BUG_TRAP(!atomic_read(&sk->sk_wmem_alloc));
65 atomic_dec(&pfkey_socks_nr);
68 static void pfkey_table_grab(void)
70 write_lock_bh(&pfkey_table_lock);
72 if (atomic_read(&pfkey_table_users)) {
73 DECLARE_WAITQUEUE(wait, current);
75 add_wait_queue_exclusive(&pfkey_table_wait, &wait);
77 set_current_state(TASK_UNINTERRUPTIBLE);
78 if (atomic_read(&pfkey_table_users) == 0)
80 write_unlock_bh(&pfkey_table_lock);
82 write_lock_bh(&pfkey_table_lock);
85 __set_current_state(TASK_RUNNING);
86 remove_wait_queue(&pfkey_table_wait, &wait);
90 static __inline__ void pfkey_table_ungrab(void)
92 write_unlock_bh(&pfkey_table_lock);
93 wake_up(&pfkey_table_wait);
96 static __inline__ void pfkey_lock_table(void)
98 /* read_lock() synchronizes us to pfkey_table_grab */
100 read_lock(&pfkey_table_lock);
101 atomic_inc(&pfkey_table_users);
102 read_unlock(&pfkey_table_lock);
105 static __inline__ void pfkey_unlock_table(void)
107 if (atomic_dec_and_test(&pfkey_table_users))
108 wake_up(&pfkey_table_wait);
112 static struct proto_ops pfkey_ops;
114 static void pfkey_insert(struct sock *sk)
117 sk_add_node(sk, &pfkey_table);
118 pfkey_table_ungrab();
121 static void pfkey_remove(struct sock *sk)
124 sk_del_node_init(sk);
125 pfkey_table_ungrab();
128 static int pfkey_create(struct socket *sock, int protocol)
131 struct pfkey_opt *pfk;
134 if (!capable(CAP_NET_ADMIN))
136 if (sock->type != SOCK_RAW)
137 return -ESOCKTNOSUPPORT;
138 if (protocol != PF_KEY_V2)
139 return -EPROTONOSUPPORT;
142 sk = sk_alloc(PF_KEY, GFP_KERNEL, 1, NULL);
146 sock->ops = &pfkey_ops;
147 sock_init_data(sock, sk);
148 sk_set_owner(sk, THIS_MODULE);
151 pfk = sk->sk_protinfo = kmalloc(sizeof(*pfk), GFP_KERNEL);
156 memset(pfk, 0, sizeof(*pfk));
158 sk->sk_family = PF_KEY;
159 sk->sk_destruct = pfkey_sock_destruct;
161 atomic_inc(&pfkey_socks_nr);
170 static int pfkey_release(struct socket *sock)
172 struct sock *sk = sock->sk;
181 skb_queue_purge(&sk->sk_write_queue);
187 static int pfkey_broadcast_one(struct sk_buff *skb, struct sk_buff **skb2,
188 int allocation, struct sock *sk)
194 if (atomic_read(&skb->users) != 1) {
195 *skb2 = skb_clone(skb, allocation);
198 atomic_inc(&skb->users);
202 if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf) {
204 skb_set_owner_r(*skb2, sk);
205 skb_queue_tail(&sk->sk_receive_queue, *skb2);
206 sk->sk_data_ready(sk, (*skb2)->len);
215 /* Send SKB to all pfkey sockets matching selected criteria. */
216 #define BROADCAST_ALL 0
217 #define BROADCAST_ONE 1
218 #define BROADCAST_REGISTERED 2
219 #define BROADCAST_PROMISC_ONLY 4
220 static int pfkey_broadcast(struct sk_buff *skb, int allocation,
221 int broadcast_flags, struct sock *one_sk)
224 struct hlist_node *node;
225 struct sk_buff *skb2 = NULL;
228 /* XXX Do we need something like netlink_overrun? I think
229 * XXX PF_KEY socket apps will not mind current behavior.
235 sk_for_each(sk, node, &pfkey_table) {
236 struct pfkey_opt *pfk = pfkey_sk(sk);
239 /* Yes, it means that if you are meant to receive this
240 * pfkey message you receive it twice as promiscuous
244 pfkey_broadcast_one(skb, &skb2, allocation, sk);
246 /* the exact target will be processed later */
249 if (broadcast_flags != BROADCAST_ALL) {
250 if (broadcast_flags & BROADCAST_PROMISC_ONLY)
252 if ((broadcast_flags & BROADCAST_REGISTERED) &&
255 if (broadcast_flags & BROADCAST_ONE)
259 err2 = pfkey_broadcast_one(skb, &skb2, allocation, sk);
261 /* Error is cleare after succecful sending to at least one
263 if ((broadcast_flags & BROADCAST_REGISTERED) && err)
266 pfkey_unlock_table();
269 err = pfkey_broadcast_one(skb, &skb2, allocation, one_sk);
277 static inline void pfkey_hdr_dup(struct sadb_msg *new, struct sadb_msg *orig)
282 static int pfkey_error(struct sadb_msg *orig, int err, struct sock *sk)
284 struct sk_buff *skb = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_KERNEL);
285 struct sadb_msg *hdr;
290 /* Woe be to the platform trying to support PFKEY yet
291 * having normal errnos outside the 1-255 range, inclusive.
294 if (err == ERESTARTSYS ||
295 err == ERESTARTNOHAND ||
296 err == ERESTARTNOINTR)
300 if (err <= 0 || err >= 256)
303 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
304 pfkey_hdr_dup(hdr, orig);
305 hdr->sadb_msg_errno = (uint8_t) err;
306 hdr->sadb_msg_len = (sizeof(struct sadb_msg) /
309 pfkey_broadcast(skb, GFP_KERNEL, BROADCAST_ONE, sk);
314 static u8 sadb_ext_min_len[] = {
315 [SADB_EXT_RESERVED] = (u8) 0,
316 [SADB_EXT_SA] = (u8) sizeof(struct sadb_sa),
317 [SADB_EXT_LIFETIME_CURRENT] = (u8) sizeof(struct sadb_lifetime),
318 [SADB_EXT_LIFETIME_HARD] = (u8) sizeof(struct sadb_lifetime),
319 [SADB_EXT_LIFETIME_SOFT] = (u8) sizeof(struct sadb_lifetime),
320 [SADB_EXT_ADDRESS_SRC] = (u8) sizeof(struct sadb_address),
321 [SADB_EXT_ADDRESS_DST] = (u8) sizeof(struct sadb_address),
322 [SADB_EXT_ADDRESS_PROXY] = (u8) sizeof(struct sadb_address),
323 [SADB_EXT_KEY_AUTH] = (u8) sizeof(struct sadb_key),
324 [SADB_EXT_KEY_ENCRYPT] = (u8) sizeof(struct sadb_key),
325 [SADB_EXT_IDENTITY_SRC] = (u8) sizeof(struct sadb_ident),
326 [SADB_EXT_IDENTITY_DST] = (u8) sizeof(struct sadb_ident),
327 [SADB_EXT_SENSITIVITY] = (u8) sizeof(struct sadb_sens),
328 [SADB_EXT_PROPOSAL] = (u8) sizeof(struct sadb_prop),
329 [SADB_EXT_SUPPORTED_AUTH] = (u8) sizeof(struct sadb_supported),
330 [SADB_EXT_SUPPORTED_ENCRYPT] = (u8) sizeof(struct sadb_supported),
331 [SADB_EXT_SPIRANGE] = (u8) sizeof(struct sadb_spirange),
332 [SADB_X_EXT_KMPRIVATE] = (u8) sizeof(struct sadb_x_kmprivate),
333 [SADB_X_EXT_POLICY] = (u8) sizeof(struct sadb_x_policy),
334 [SADB_X_EXT_SA2] = (u8) sizeof(struct sadb_x_sa2),
335 [SADB_X_EXT_NAT_T_TYPE] = (u8) sizeof(struct sadb_x_nat_t_type),
336 [SADB_X_EXT_NAT_T_SPORT] = (u8) sizeof(struct sadb_x_nat_t_port),
337 [SADB_X_EXT_NAT_T_DPORT] = (u8) sizeof(struct sadb_x_nat_t_port),
338 [SADB_X_EXT_NAT_T_OA] = (u8) sizeof(struct sadb_address),
341 /* Verify sadb_address_{len,prefixlen} against sa_family. */
342 static int verify_address_len(void *p)
344 struct sadb_address *sp = p;
345 struct sockaddr *addr = (struct sockaddr *)(sp + 1);
346 struct sockaddr_in *sin;
347 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
348 struct sockaddr_in6 *sin6;
352 switch (addr->sa_family) {
354 len = sizeof(*sp) + sizeof(*sin) + (sizeof(uint64_t) - 1);
355 len /= sizeof(uint64_t);
356 if (sp->sadb_address_len != len ||
357 sp->sadb_address_prefixlen > 32)
360 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
362 len = sizeof(*sp) + sizeof(*sin6) + (sizeof(uint64_t) - 1);
363 len /= sizeof(uint64_t);
364 if (sp->sadb_address_len != len ||
365 sp->sadb_address_prefixlen > 128)
370 /* It is user using kernel to keep track of security
371 * associations for another protocol, such as
372 * OSPF/RSVP/RIPV2/MIP. It is user's job to verify
375 * XXX Actually, association/policy database is not yet
376 * XXX able to cope with arbitrary sockaddr families.
377 * XXX When it can, remove this -EINVAL. -DaveM
386 static int present_and_same_family(struct sadb_address *src,
387 struct sadb_address *dst)
389 struct sockaddr *s_addr, *d_addr;
394 s_addr = (struct sockaddr *)(src + 1);
395 d_addr = (struct sockaddr *)(dst + 1);
396 if (s_addr->sa_family != d_addr->sa_family)
398 if (s_addr->sa_family != AF_INET
399 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
400 && s_addr->sa_family != AF_INET6
408 static int parse_exthdrs(struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
410 char *p = (char *) hdr;
416 struct sadb_ext *ehdr = (struct sadb_ext *) p;
420 ext_len = ehdr->sadb_ext_len;
421 ext_len *= sizeof(uint64_t);
422 ext_type = ehdr->sadb_ext_type;
423 if (ext_len < sizeof(uint64_t) ||
425 ext_type == SADB_EXT_RESERVED)
428 if (ext_type <= SADB_EXT_MAX) {
429 int min = (int) sadb_ext_min_len[ext_type];
432 if (ext_hdrs[ext_type-1] != NULL)
434 if (ext_type == SADB_EXT_ADDRESS_SRC ||
435 ext_type == SADB_EXT_ADDRESS_DST ||
436 ext_type == SADB_EXT_ADDRESS_PROXY ||
437 ext_type == SADB_X_EXT_NAT_T_OA) {
438 if (verify_address_len(p))
441 ext_hdrs[ext_type-1] = p;
451 pfkey_satype2proto(uint8_t satype)
454 case SADB_SATYPE_UNSPEC:
455 return IPSEC_PROTO_ANY;
458 case SADB_SATYPE_ESP:
460 case SADB_X_SATYPE_IPCOMP:
470 pfkey_proto2satype(uint16_t proto)
474 return SADB_SATYPE_AH;
476 return SADB_SATYPE_ESP;
478 return SADB_X_SATYPE_IPCOMP;
486 /* BTW, this scheme means that there is no way with PFKEY2 sockets to
487 * say specifically 'just raw sockets' as we encode them as 255.
490 static uint8_t pfkey_proto_to_xfrm(uint8_t proto)
492 return (proto == IPSEC_PROTO_ANY ? 0 : proto);
495 static uint8_t pfkey_proto_from_xfrm(uint8_t proto)
497 return (proto ? proto : IPSEC_PROTO_ANY);
500 static int pfkey_sadb_addr2xfrm_addr(struct sadb_address *addr,
501 xfrm_address_t *xaddr)
503 switch (((struct sockaddr*)(addr + 1))->sa_family) {
506 ((struct sockaddr_in *)(addr + 1))->sin_addr.s_addr;
508 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
511 &((struct sockaddr_in6 *)(addr + 1))->sin6_addr,
512 sizeof(struct in6_addr));
521 static struct xfrm_state *pfkey_xfrm_state_lookup(struct sadb_msg *hdr, void **ext_hdrs)
524 struct sadb_address *addr;
526 unsigned short family;
527 xfrm_address_t *xaddr;
529 sa = (struct sadb_sa *) ext_hdrs[SADB_EXT_SA-1];
533 proto = pfkey_satype2proto(hdr->sadb_msg_satype);
537 /* sadb_address_len should be checked by caller */
538 addr = (struct sadb_address *) ext_hdrs[SADB_EXT_ADDRESS_DST-1];
542 family = ((struct sockaddr *)(addr + 1))->sa_family;
545 xaddr = (xfrm_address_t *)&((struct sockaddr_in *)(addr + 1))->sin_addr;
547 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
549 xaddr = (xfrm_address_t *)&((struct sockaddr_in6 *)(addr + 1))->sin6_addr;
559 return xfrm_state_lookup(xaddr, sa->sadb_sa_spi, proto, family);
562 #define PFKEY_ALIGN8(a) (1 + (((a) - 1) | (8 - 1)))
564 pfkey_sockaddr_size(sa_family_t family)
568 return PFKEY_ALIGN8(sizeof(struct sockaddr_in));
569 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
571 return PFKEY_ALIGN8(sizeof(struct sockaddr_in6));
579 static struct sk_buff * pfkey_xfrm_state2msg(struct xfrm_state *x, int add_keys, int hsc)
582 struct sadb_msg *hdr;
584 struct sadb_lifetime *lifetime;
585 struct sadb_address *addr;
586 struct sadb_key *key;
587 struct sadb_x_sa2 *sa2;
588 struct sockaddr_in *sin;
589 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
590 struct sockaddr_in6 *sin6;
593 int auth_key_size = 0;
594 int encrypt_key_size = 0;
596 struct xfrm_encap_tmpl *natt = NULL;
598 /* address family check */
599 sockaddr_size = pfkey_sockaddr_size(x->props.family);
603 /* base, SA, (lifetime (HSC),) address(SD), (address(P),)
604 key(AE), (identity(SD),) (sensitivity)> */
605 size = sizeof(struct sadb_msg) +sizeof(struct sadb_sa) +
606 sizeof(struct sadb_lifetime) +
607 ((hsc & 1) ? sizeof(struct sadb_lifetime) : 0) +
608 ((hsc & 2) ? sizeof(struct sadb_lifetime) : 0) +
609 sizeof(struct sadb_address)*2 +
611 sizeof(struct sadb_x_sa2);
612 /* identity & sensitivity */
614 if ((x->props.family == AF_INET &&
615 x->sel.saddr.a4 != x->props.saddr.a4)
616 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
617 || (x->props.family == AF_INET6 &&
618 memcmp (x->sel.saddr.a6, x->props.saddr.a6, sizeof (struct in6_addr)))
621 size += sizeof(struct sadb_address) + sockaddr_size;
624 if (x->aalg && x->aalg->alg_key_len) {
626 PFKEY_ALIGN8((x->aalg->alg_key_len + 7) / 8);
627 size += sizeof(struct sadb_key) + auth_key_size;
629 if (x->ealg && x->ealg->alg_key_len) {
631 PFKEY_ALIGN8((x->ealg->alg_key_len+7) / 8);
632 size += sizeof(struct sadb_key) + encrypt_key_size;
638 if (natt && natt->encap_type) {
639 size += sizeof(struct sadb_x_nat_t_type);
640 size += sizeof(struct sadb_x_nat_t_port);
641 size += sizeof(struct sadb_x_nat_t_port);
644 skb = alloc_skb(size + 16, GFP_ATOMIC);
646 return ERR_PTR(-ENOBUFS);
648 /* call should fill header later */
649 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
650 memset(hdr, 0, size); /* XXX do we need this ? */
651 hdr->sadb_msg_len = size / sizeof(uint64_t);
654 sa = (struct sadb_sa *) skb_put(skb, sizeof(struct sadb_sa));
655 sa->sadb_sa_len = sizeof(struct sadb_sa)/sizeof(uint64_t);
656 sa->sadb_sa_exttype = SADB_EXT_SA;
657 sa->sadb_sa_spi = x->id.spi;
658 sa->sadb_sa_replay = x->props.replay_window;
659 sa->sadb_sa_state = SADB_SASTATE_DYING;
660 if (x->km.state == XFRM_STATE_VALID && !x->km.dying)
661 sa->sadb_sa_state = SADB_SASTATE_MATURE;
662 else if (x->km.state == XFRM_STATE_ACQ)
663 sa->sadb_sa_state = SADB_SASTATE_LARVAL;
664 else if (x->km.state == XFRM_STATE_EXPIRED)
665 sa->sadb_sa_state = SADB_SASTATE_DEAD;
666 sa->sadb_sa_auth = 0;
668 struct xfrm_algo_desc *a = xfrm_aalg_get_byname(x->aalg->alg_name);
669 sa->sadb_sa_auth = a ? a->desc.sadb_alg_id : 0;
671 sa->sadb_sa_encrypt = 0;
672 BUG_ON(x->ealg && x->calg);
674 struct xfrm_algo_desc *a = xfrm_ealg_get_byname(x->ealg->alg_name);
675 sa->sadb_sa_encrypt = a ? a->desc.sadb_alg_id : 0;
677 /* KAME compatible: sadb_sa_encrypt is overloaded with calg id */
679 struct xfrm_algo_desc *a = xfrm_calg_get_byname(x->calg->alg_name);
680 sa->sadb_sa_encrypt = a ? a->desc.sadb_alg_id : 0;
683 sa->sadb_sa_flags = 0;
684 if (x->props.flags & XFRM_STATE_NOECN)
685 sa->sadb_sa_flags |= SADB_SAFLAGS_NOECN;
689 lifetime = (struct sadb_lifetime *) skb_put(skb,
690 sizeof(struct sadb_lifetime));
691 lifetime->sadb_lifetime_len =
692 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
693 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
694 lifetime->sadb_lifetime_allocations = _X2KEY(x->lft.hard_packet_limit);
695 lifetime->sadb_lifetime_bytes = _X2KEY(x->lft.hard_byte_limit);
696 lifetime->sadb_lifetime_addtime = x->lft.hard_add_expires_seconds;
697 lifetime->sadb_lifetime_usetime = x->lft.hard_use_expires_seconds;
701 lifetime = (struct sadb_lifetime *) skb_put(skb,
702 sizeof(struct sadb_lifetime));
703 lifetime->sadb_lifetime_len =
704 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
705 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
706 lifetime->sadb_lifetime_allocations = _X2KEY(x->lft.soft_packet_limit);
707 lifetime->sadb_lifetime_bytes = _X2KEY(x->lft.soft_byte_limit);
708 lifetime->sadb_lifetime_addtime = x->lft.soft_add_expires_seconds;
709 lifetime->sadb_lifetime_usetime = x->lft.soft_use_expires_seconds;
712 lifetime = (struct sadb_lifetime *) skb_put(skb,
713 sizeof(struct sadb_lifetime));
714 lifetime->sadb_lifetime_len =
715 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
716 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
717 lifetime->sadb_lifetime_allocations = x->curlft.packets;
718 lifetime->sadb_lifetime_bytes = x->curlft.bytes;
719 lifetime->sadb_lifetime_addtime = x->curlft.add_time;
720 lifetime->sadb_lifetime_usetime = x->curlft.use_time;
722 addr = (struct sadb_address*) skb_put(skb,
723 sizeof(struct sadb_address)+sockaddr_size);
724 addr->sadb_address_len =
725 (sizeof(struct sadb_address)+sockaddr_size)/
727 addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
728 /* "if the ports are non-zero, then the sadb_address_proto field,
729 normally zero, MUST be filled in with the transport
730 protocol's number." - RFC2367 */
731 addr->sadb_address_proto = 0;
732 addr->sadb_address_reserved = 0;
733 if (x->props.family == AF_INET) {
734 addr->sadb_address_prefixlen = 32;
736 sin = (struct sockaddr_in *) (addr + 1);
737 sin->sin_family = AF_INET;
738 sin->sin_addr.s_addr = x->props.saddr.a4;
740 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
742 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
743 else if (x->props.family == AF_INET6) {
744 addr->sadb_address_prefixlen = 128;
746 sin6 = (struct sockaddr_in6 *) (addr + 1);
747 sin6->sin6_family = AF_INET6;
749 sin6->sin6_flowinfo = 0;
750 memcpy(&sin6->sin6_addr, x->props.saddr.a6,
751 sizeof(struct in6_addr));
752 sin6->sin6_scope_id = 0;
759 addr = (struct sadb_address*) skb_put(skb,
760 sizeof(struct sadb_address)+sockaddr_size);
761 addr->sadb_address_len =
762 (sizeof(struct sadb_address)+sockaddr_size)/
764 addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST;
765 addr->sadb_address_proto = 0;
766 addr->sadb_address_prefixlen = 32; /* XXX */
767 addr->sadb_address_reserved = 0;
768 if (x->props.family == AF_INET) {
769 sin = (struct sockaddr_in *) (addr + 1);
770 sin->sin_family = AF_INET;
771 sin->sin_addr.s_addr = x->id.daddr.a4;
773 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
775 if (x->sel.saddr.a4 != x->props.saddr.a4) {
776 addr = (struct sadb_address*) skb_put(skb,
777 sizeof(struct sadb_address)+sockaddr_size);
778 addr->sadb_address_len =
779 (sizeof(struct sadb_address)+sockaddr_size)/
781 addr->sadb_address_exttype = SADB_EXT_ADDRESS_PROXY;
782 addr->sadb_address_proto =
783 pfkey_proto_from_xfrm(x->sel.proto);
784 addr->sadb_address_prefixlen = x->sel.prefixlen_s;
785 addr->sadb_address_reserved = 0;
787 sin = (struct sockaddr_in *) (addr + 1);
788 sin->sin_family = AF_INET;
789 sin->sin_addr.s_addr = x->sel.saddr.a4;
790 sin->sin_port = x->sel.sport;
791 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
794 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
795 else if (x->props.family == AF_INET6) {
796 addr->sadb_address_prefixlen = 128;
798 sin6 = (struct sockaddr_in6 *) (addr + 1);
799 sin6->sin6_family = AF_INET6;
801 sin6->sin6_flowinfo = 0;
802 memcpy(&sin6->sin6_addr, x->id.daddr.a6, sizeof(struct in6_addr));
803 sin6->sin6_scope_id = 0;
805 if (memcmp (x->sel.saddr.a6, x->props.saddr.a6,
806 sizeof(struct in6_addr))) {
807 addr = (struct sadb_address *) skb_put(skb,
808 sizeof(struct sadb_address)+sockaddr_size);
809 addr->sadb_address_len =
810 (sizeof(struct sadb_address)+sockaddr_size)/
812 addr->sadb_address_exttype = SADB_EXT_ADDRESS_PROXY;
813 addr->sadb_address_proto =
814 pfkey_proto_from_xfrm(x->sel.proto);
815 addr->sadb_address_prefixlen = x->sel.prefixlen_s;
816 addr->sadb_address_reserved = 0;
818 sin6 = (struct sockaddr_in6 *) (addr + 1);
819 sin6->sin6_family = AF_INET6;
820 sin6->sin6_port = x->sel.sport;
821 sin6->sin6_flowinfo = 0;
822 memcpy(&sin6->sin6_addr, x->sel.saddr.a6,
823 sizeof(struct in6_addr));
824 sin6->sin6_scope_id = 0;
832 if (add_keys && auth_key_size) {
833 key = (struct sadb_key *) skb_put(skb,
834 sizeof(struct sadb_key)+auth_key_size);
835 key->sadb_key_len = (sizeof(struct sadb_key) + auth_key_size) /
837 key->sadb_key_exttype = SADB_EXT_KEY_AUTH;
838 key->sadb_key_bits = x->aalg->alg_key_len;
839 key->sadb_key_reserved = 0;
840 memcpy(key + 1, x->aalg->alg_key, (x->aalg->alg_key_len+7)/8);
843 if (add_keys && encrypt_key_size) {
844 key = (struct sadb_key *) skb_put(skb,
845 sizeof(struct sadb_key)+encrypt_key_size);
846 key->sadb_key_len = (sizeof(struct sadb_key) +
847 encrypt_key_size) / sizeof(uint64_t);
848 key->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT;
849 key->sadb_key_bits = x->ealg->alg_key_len;
850 key->sadb_key_reserved = 0;
851 memcpy(key + 1, x->ealg->alg_key,
852 (x->ealg->alg_key_len+7)/8);
856 sa2 = (struct sadb_x_sa2 *) skb_put(skb, sizeof(struct sadb_x_sa2));
857 sa2->sadb_x_sa2_len = sizeof(struct sadb_x_sa2)/sizeof(uint64_t);
858 sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
859 sa2->sadb_x_sa2_mode = x->props.mode + 1;
860 sa2->sadb_x_sa2_reserved1 = 0;
861 sa2->sadb_x_sa2_reserved2 = 0;
862 sa2->sadb_x_sa2_sequence = 0;
863 sa2->sadb_x_sa2_reqid = x->props.reqid;
865 if (natt && natt->encap_type) {
866 struct sadb_x_nat_t_type *n_type;
867 struct sadb_x_nat_t_port *n_port;
870 n_type = (struct sadb_x_nat_t_type*) skb_put(skb, sizeof(*n_type));
871 n_type->sadb_x_nat_t_type_len = sizeof(*n_type)/sizeof(uint64_t);
872 n_type->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE;
873 n_type->sadb_x_nat_t_type_type = natt->encap_type;
874 n_type->sadb_x_nat_t_type_reserved[0] = 0;
875 n_type->sadb_x_nat_t_type_reserved[1] = 0;
876 n_type->sadb_x_nat_t_type_reserved[2] = 0;
879 n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
880 n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
881 n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT;
882 n_port->sadb_x_nat_t_port_port = natt->encap_sport;
883 n_port->sadb_x_nat_t_port_reserved = 0;
886 n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
887 n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
888 n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT;
889 n_port->sadb_x_nat_t_port_port = natt->encap_dport;
890 n_port->sadb_x_nat_t_port_reserved = 0;
896 static struct xfrm_state * pfkey_msg2xfrm_state(struct sadb_msg *hdr,
899 struct xfrm_state *x;
900 struct sadb_lifetime *lifetime;
902 struct sadb_key *key;
907 sa = (struct sadb_sa *) ext_hdrs[SADB_EXT_SA-1];
909 !present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
910 ext_hdrs[SADB_EXT_ADDRESS_DST-1]))
911 return ERR_PTR(-EINVAL);
912 if (hdr->sadb_msg_satype == SADB_SATYPE_ESP &&
913 !ext_hdrs[SADB_EXT_KEY_ENCRYPT-1])
914 return ERR_PTR(-EINVAL);
915 if (hdr->sadb_msg_satype == SADB_SATYPE_AH &&
916 !ext_hdrs[SADB_EXT_KEY_AUTH-1])
917 return ERR_PTR(-EINVAL);
918 if (!!ext_hdrs[SADB_EXT_LIFETIME_HARD-1] !=
919 !!ext_hdrs[SADB_EXT_LIFETIME_SOFT-1])
920 return ERR_PTR(-EINVAL);
922 proto = pfkey_satype2proto(hdr->sadb_msg_satype);
924 return ERR_PTR(-EINVAL);
926 /* default error is no buffer space */
931 Only SADB_SASTATE_MATURE SAs may be submitted in an SADB_ADD message.
932 SADB_SASTATE_LARVAL SAs are created by SADB_GETSPI and it is not
933 sensible to add a new SA in the DYING or SADB_SASTATE_DEAD state.
934 Therefore, the sadb_sa_state field of all submitted SAs MUST be
935 SADB_SASTATE_MATURE and the kernel MUST return an error if this is
938 However, KAME setkey always uses SADB_SASTATE_LARVAL.
939 Hence, we have to _ignore_ sadb_sa_state, which is also reasonable.
941 if (sa->sadb_sa_auth > SADB_AALG_MAX ||
942 (hdr->sadb_msg_satype == SADB_X_SATYPE_IPCOMP &&
943 sa->sadb_sa_encrypt > SADB_X_CALG_MAX) ||
944 sa->sadb_sa_encrypt > SADB_EALG_MAX)
945 return ERR_PTR(-EINVAL);
946 key = (struct sadb_key*) ext_hdrs[SADB_EXT_KEY_AUTH-1];
948 sa->sadb_sa_auth != SADB_X_AALG_NULL &&
949 ((key->sadb_key_bits+7) / 8 == 0 ||
950 (key->sadb_key_bits+7) / 8 > key->sadb_key_len * sizeof(uint64_t)))
951 return ERR_PTR(-EINVAL);
952 key = ext_hdrs[SADB_EXT_KEY_ENCRYPT-1];
954 sa->sadb_sa_encrypt != SADB_EALG_NULL &&
955 ((key->sadb_key_bits+7) / 8 == 0 ||
956 (key->sadb_key_bits+7) / 8 > key->sadb_key_len * sizeof(uint64_t)))
957 return ERR_PTR(-EINVAL);
959 x = xfrm_state_alloc();
961 return ERR_PTR(-ENOBUFS);
964 x->id.spi = sa->sadb_sa_spi;
965 x->props.replay_window = sa->sadb_sa_replay;
966 if (sa->sadb_sa_flags & SADB_SAFLAGS_NOECN)
967 x->props.flags |= XFRM_STATE_NOECN;
969 lifetime = (struct sadb_lifetime*) ext_hdrs[SADB_EXT_LIFETIME_HARD-1];
970 if (lifetime != NULL) {
971 x->lft.hard_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations);
972 x->lft.hard_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes);
973 x->lft.hard_add_expires_seconds = lifetime->sadb_lifetime_addtime;
974 x->lft.hard_use_expires_seconds = lifetime->sadb_lifetime_usetime;
976 lifetime = (struct sadb_lifetime*) ext_hdrs[SADB_EXT_LIFETIME_SOFT-1];
977 if (lifetime != NULL) {
978 x->lft.soft_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations);
979 x->lft.soft_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes);
980 x->lft.soft_add_expires_seconds = lifetime->sadb_lifetime_addtime;
981 x->lft.soft_use_expires_seconds = lifetime->sadb_lifetime_usetime;
983 key = (struct sadb_key*) ext_hdrs[SADB_EXT_KEY_AUTH-1];
984 if (sa->sadb_sa_auth) {
986 struct xfrm_algo_desc *a = xfrm_aalg_get_byid(sa->sadb_sa_auth);
992 keysize = (key->sadb_key_bits + 7) / 8;
993 x->aalg = kmalloc(sizeof(*x->aalg) + keysize, GFP_KERNEL);
996 strcpy(x->aalg->alg_name, a->name);
997 x->aalg->alg_key_len = 0;
999 x->aalg->alg_key_len = key->sadb_key_bits;
1000 memcpy(x->aalg->alg_key, key+1, keysize);
1002 x->props.aalgo = sa->sadb_sa_auth;
1003 /* x->algo.flags = sa->sadb_sa_flags; */
1005 if (sa->sadb_sa_encrypt) {
1006 if (hdr->sadb_msg_satype == SADB_X_SATYPE_IPCOMP) {
1007 struct xfrm_algo_desc *a = xfrm_calg_get_byid(sa->sadb_sa_encrypt);
1012 x->calg = kmalloc(sizeof(*x->calg), GFP_KERNEL);
1015 strcpy(x->calg->alg_name, a->name);
1016 x->props.calgo = sa->sadb_sa_encrypt;
1019 struct xfrm_algo_desc *a = xfrm_ealg_get_byid(sa->sadb_sa_encrypt);
1024 key = (struct sadb_key*) ext_hdrs[SADB_EXT_KEY_ENCRYPT-1];
1026 keysize = (key->sadb_key_bits + 7) / 8;
1027 x->ealg = kmalloc(sizeof(*x->ealg) + keysize, GFP_KERNEL);
1030 strcpy(x->ealg->alg_name, a->name);
1031 x->ealg->alg_key_len = 0;
1033 x->ealg->alg_key_len = key->sadb_key_bits;
1034 memcpy(x->ealg->alg_key, key+1, keysize);
1036 x->props.ealgo = sa->sadb_sa_encrypt;
1039 /* x->algo.flags = sa->sadb_sa_flags; */
1041 x->props.family = pfkey_sadb_addr2xfrm_addr((struct sadb_address *) ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1043 if (!x->props.family) {
1044 err = -EAFNOSUPPORT;
1047 pfkey_sadb_addr2xfrm_addr((struct sadb_address *) ext_hdrs[SADB_EXT_ADDRESS_DST-1],
1050 if (ext_hdrs[SADB_X_EXT_SA2-1]) {
1051 struct sadb_x_sa2 *sa2 = (void*)ext_hdrs[SADB_X_EXT_SA2-1];
1052 x->props.mode = sa2->sadb_x_sa2_mode;
1055 x->props.reqid = sa2->sadb_x_sa2_reqid;
1058 if (ext_hdrs[SADB_EXT_ADDRESS_PROXY-1]) {
1059 struct sadb_address *addr = ext_hdrs[SADB_EXT_ADDRESS_PROXY-1];
1061 /* Nobody uses this, but we try. */
1062 x->sel.family = pfkey_sadb_addr2xfrm_addr(addr, &x->sel.saddr);
1063 x->sel.prefixlen_s = addr->sadb_address_prefixlen;
1066 if (ext_hdrs[SADB_X_EXT_NAT_T_TYPE-1]) {
1067 struct sadb_x_nat_t_type* n_type;
1068 struct xfrm_encap_tmpl *natt;
1070 x->encap = kmalloc(sizeof(*x->encap), GFP_KERNEL);
1075 n_type = ext_hdrs[SADB_X_EXT_NAT_T_TYPE-1];
1076 natt->encap_type = n_type->sadb_x_nat_t_type_type;
1078 switch (natt->encap_type) {
1079 case UDP_ENCAP_ESPINUDP:
1080 case UDP_ENCAP_ESPINUDP_NON_IKE:
1087 if (ext_hdrs[SADB_X_EXT_NAT_T_SPORT-1]) {
1088 struct sadb_x_nat_t_port* n_port =
1089 ext_hdrs[SADB_X_EXT_NAT_T_SPORT-1];
1090 natt->encap_sport = n_port->sadb_x_nat_t_port_port;
1092 if (ext_hdrs[SADB_X_EXT_NAT_T_DPORT-1]) {
1093 struct sadb_x_nat_t_port* n_port =
1094 ext_hdrs[SADB_X_EXT_NAT_T_DPORT-1];
1095 natt->encap_dport = n_port->sadb_x_nat_t_port_port;
1099 x->type = xfrm_get_type(proto, x->props.family);
1100 if (x->type == NULL) {
1104 if (x->type->init_state(x, NULL)) {
1108 x->km.seq = hdr->sadb_msg_seq;
1109 x->km.state = XFRM_STATE_VALID;
1113 x->km.state = XFRM_STATE_DEAD;
1115 return ERR_PTR(err);
1118 static int pfkey_reserved(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1123 static int pfkey_getspi(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1125 struct sk_buff *resp_skb;
1126 struct sadb_x_sa2 *sa2;
1127 struct sadb_address *saddr, *daddr;
1128 struct sadb_msg *out_hdr;
1129 struct xfrm_state *x = NULL;
1133 unsigned short family;
1134 xfrm_address_t *xsaddr = NULL, *xdaddr = NULL;
1136 if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1137 ext_hdrs[SADB_EXT_ADDRESS_DST-1]))
1140 proto = pfkey_satype2proto(hdr->sadb_msg_satype);
1144 if ((sa2 = ext_hdrs[SADB_X_EXT_SA2-1]) != NULL) {
1145 mode = sa2->sadb_x_sa2_mode - 1;
1146 reqid = sa2->sadb_x_sa2_reqid;
1152 saddr = ext_hdrs[SADB_EXT_ADDRESS_SRC-1];
1153 daddr = ext_hdrs[SADB_EXT_ADDRESS_DST-1];
1155 family = ((struct sockaddr *)(saddr + 1))->sa_family;
1158 xdaddr = (xfrm_address_t *)&((struct sockaddr_in *)(daddr + 1))->sin_addr.s_addr;
1159 xsaddr = (xfrm_address_t *)&((struct sockaddr_in *)(saddr + 1))->sin_addr.s_addr;
1161 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1163 xdaddr = (xfrm_address_t *)&((struct sockaddr_in6 *)(daddr + 1))->sin6_addr;
1164 xsaddr = (xfrm_address_t *)&((struct sockaddr_in6 *)(saddr + 1))->sin6_addr;
1169 x = xfrm_find_acq(mode, reqid, proto, xdaddr, xsaddr, 1, family);
1174 resp_skb = ERR_PTR(-ENOENT);
1176 spin_lock_bh(&x->lock);
1177 if (x->km.state != XFRM_STATE_DEAD) {
1178 struct sadb_spirange *range = ext_hdrs[SADB_EXT_SPIRANGE-1];
1179 u32 min_spi, max_spi;
1181 if (range != NULL) {
1182 min_spi = range->sadb_spirange_min;
1183 max_spi = range->sadb_spirange_max;
1185 min_spi = htonl(0x100);
1186 max_spi = htonl(0x0fffffff);
1188 xfrm_alloc_spi(x, min_spi, max_spi);
1190 resp_skb = pfkey_xfrm_state2msg(x, 0, 3);
1192 spin_unlock_bh(&x->lock);
1194 if (IS_ERR(resp_skb)) {
1196 return PTR_ERR(resp_skb);
1199 out_hdr = (struct sadb_msg *) resp_skb->data;
1200 out_hdr->sadb_msg_version = hdr->sadb_msg_version;
1201 out_hdr->sadb_msg_type = SADB_GETSPI;
1202 out_hdr->sadb_msg_satype = pfkey_proto2satype(proto);
1203 out_hdr->sadb_msg_errno = 0;
1204 out_hdr->sadb_msg_reserved = 0;
1205 out_hdr->sadb_msg_seq = hdr->sadb_msg_seq;
1206 out_hdr->sadb_msg_pid = hdr->sadb_msg_pid;
1210 pfkey_broadcast(resp_skb, GFP_KERNEL, BROADCAST_ONE, sk);
1215 static int pfkey_acquire(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1217 struct xfrm_state *x;
1219 if (hdr->sadb_msg_len != sizeof(struct sadb_msg)/8)
1222 if (hdr->sadb_msg_seq == 0 || hdr->sadb_msg_errno == 0)
1225 x = xfrm_find_acq_byseq(hdr->sadb_msg_seq);
1229 spin_lock_bh(&x->lock);
1230 if (x->km.state == XFRM_STATE_ACQ) {
1231 x->km.state = XFRM_STATE_ERROR;
1234 spin_unlock_bh(&x->lock);
1240 static int pfkey_add(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1242 struct sk_buff *out_skb;
1243 struct sadb_msg *out_hdr;
1244 struct xfrm_state *x;
1249 x = pfkey_msg2xfrm_state(hdr, ext_hdrs);
1253 if (hdr->sadb_msg_type == SADB_ADD)
1254 err = xfrm_state_add(x);
1256 err = xfrm_state_update(x);
1259 x->km.state = XFRM_STATE_DEAD;
1264 out_skb = pfkey_xfrm_state2msg(x, 0, 3);
1265 if (IS_ERR(out_skb))
1266 return PTR_ERR(out_skb); /* XXX Should we return 0 here ? */
1268 out_hdr = (struct sadb_msg *) out_skb->data;
1269 out_hdr->sadb_msg_version = hdr->sadb_msg_version;
1270 out_hdr->sadb_msg_type = hdr->sadb_msg_type;
1271 out_hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto);
1272 out_hdr->sadb_msg_errno = 0;
1273 out_hdr->sadb_msg_reserved = 0;
1274 out_hdr->sadb_msg_seq = hdr->sadb_msg_seq;
1275 out_hdr->sadb_msg_pid = hdr->sadb_msg_pid;
1277 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ALL, sk);
1282 static int pfkey_delete(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1284 struct xfrm_state *x;
1286 if (!ext_hdrs[SADB_EXT_SA-1] ||
1287 !present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1288 ext_hdrs[SADB_EXT_ADDRESS_DST-1]))
1291 x = pfkey_xfrm_state_lookup(hdr, ext_hdrs);
1295 if (xfrm_state_kern(x)) {
1300 xfrm_state_delete(x);
1303 pfkey_broadcast(skb_clone(skb, GFP_KERNEL), GFP_KERNEL,
1309 static int pfkey_get(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1312 struct sk_buff *out_skb;
1313 struct sadb_msg *out_hdr;
1314 struct xfrm_state *x;
1316 if (!ext_hdrs[SADB_EXT_SA-1] ||
1317 !present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1318 ext_hdrs[SADB_EXT_ADDRESS_DST-1]))
1321 x = pfkey_xfrm_state_lookup(hdr, ext_hdrs);
1325 out_skb = pfkey_xfrm_state2msg(x, 1, 3);
1326 proto = x->id.proto;
1328 if (IS_ERR(out_skb))
1329 return PTR_ERR(out_skb);
1331 out_hdr = (struct sadb_msg *) out_skb->data;
1332 out_hdr->sadb_msg_version = hdr->sadb_msg_version;
1333 out_hdr->sadb_msg_type = SADB_DUMP;
1334 out_hdr->sadb_msg_satype = pfkey_proto2satype(proto);
1335 out_hdr->sadb_msg_errno = 0;
1336 out_hdr->sadb_msg_reserved = 0;
1337 out_hdr->sadb_msg_seq = hdr->sadb_msg_seq;
1338 out_hdr->sadb_msg_pid = hdr->sadb_msg_pid;
1339 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ONE, sk);
1344 static struct sk_buff *compose_sadb_supported(struct sadb_msg *orig, int allocation)
1346 struct sk_buff *skb;
1347 struct sadb_msg *hdr;
1348 int len, auth_len, enc_len, i;
1350 auth_len = xfrm_count_auth_supported();
1352 auth_len *= sizeof(struct sadb_alg);
1353 auth_len += sizeof(struct sadb_supported);
1356 enc_len = xfrm_count_enc_supported();
1358 enc_len *= sizeof(struct sadb_alg);
1359 enc_len += sizeof(struct sadb_supported);
1362 len = enc_len + auth_len + sizeof(struct sadb_msg);
1364 skb = alloc_skb(len + 16, allocation);
1368 hdr = (struct sadb_msg *) skb_put(skb, sizeof(*hdr));
1369 pfkey_hdr_dup(hdr, orig);
1370 hdr->sadb_msg_errno = 0;
1371 hdr->sadb_msg_len = len / sizeof(uint64_t);
1374 struct sadb_supported *sp;
1375 struct sadb_alg *ap;
1377 sp = (struct sadb_supported *) skb_put(skb, auth_len);
1378 ap = (struct sadb_alg *) (sp + 1);
1380 sp->sadb_supported_len = auth_len / sizeof(uint64_t);
1381 sp->sadb_supported_exttype = SADB_EXT_SUPPORTED_AUTH;
1383 for (i = 0; ; i++) {
1384 struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i);
1387 if (aalg->available)
1393 struct sadb_supported *sp;
1394 struct sadb_alg *ap;
1396 sp = (struct sadb_supported *) skb_put(skb, enc_len);
1397 ap = (struct sadb_alg *) (sp + 1);
1399 sp->sadb_supported_len = enc_len / sizeof(uint64_t);
1400 sp->sadb_supported_exttype = SADB_EXT_SUPPORTED_ENCRYPT;
1402 for (i = 0; ; i++) {
1403 struct xfrm_algo_desc *ealg = xfrm_ealg_get_byidx(i);
1406 if (ealg->available)
1415 static int pfkey_register(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1417 struct pfkey_opt *pfk = pfkey_sk(sk);
1418 struct sk_buff *supp_skb;
1420 if (hdr->sadb_msg_satype > SADB_SATYPE_MAX)
1423 if (hdr->sadb_msg_satype != SADB_SATYPE_UNSPEC) {
1424 if (pfk->registered&(1<<hdr->sadb_msg_satype))
1426 pfk->registered |= (1<<hdr->sadb_msg_satype);
1431 supp_skb = compose_sadb_supported(hdr, GFP_KERNEL);
1433 if (hdr->sadb_msg_satype != SADB_SATYPE_UNSPEC)
1434 pfk->registered &= ~(1<<hdr->sadb_msg_satype);
1439 pfkey_broadcast(supp_skb, GFP_KERNEL, BROADCAST_REGISTERED, sk);
1444 static int pfkey_flush(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1447 struct sk_buff *skb_out;
1448 struct sadb_msg *hdr_out;
1450 proto = pfkey_satype2proto(hdr->sadb_msg_satype);
1454 skb_out = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_KERNEL);
1458 xfrm_state_flush(proto);
1460 hdr_out = (struct sadb_msg *) skb_put(skb_out, sizeof(struct sadb_msg));
1461 pfkey_hdr_dup(hdr_out, hdr);
1462 hdr_out->sadb_msg_errno = (uint8_t) 0;
1463 hdr_out->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t));
1465 pfkey_broadcast(skb_out, GFP_KERNEL, BROADCAST_ALL, NULL);
1470 struct pfkey_dump_data
1472 struct sk_buff *skb;
1473 struct sadb_msg *hdr;
1477 static int dump_sa(struct xfrm_state *x, int count, void *ptr)
1479 struct pfkey_dump_data *data = ptr;
1480 struct sk_buff *out_skb;
1481 struct sadb_msg *out_hdr;
1483 out_skb = pfkey_xfrm_state2msg(x, 1, 3);
1484 if (IS_ERR(out_skb))
1485 return PTR_ERR(out_skb);
1487 out_hdr = (struct sadb_msg *) out_skb->data;
1488 out_hdr->sadb_msg_version = data->hdr->sadb_msg_version;
1489 out_hdr->sadb_msg_type = SADB_DUMP;
1490 out_hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto);
1491 out_hdr->sadb_msg_errno = 0;
1492 out_hdr->sadb_msg_reserved = 0;
1493 out_hdr->sadb_msg_seq = count;
1494 out_hdr->sadb_msg_pid = data->hdr->sadb_msg_pid;
1495 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ONE, data->sk);
1499 static int pfkey_dump(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1502 struct pfkey_dump_data data = { .skb = skb, .hdr = hdr, .sk = sk };
1504 proto = pfkey_satype2proto(hdr->sadb_msg_satype);
1508 return xfrm_state_walk(proto, dump_sa, &data);
1511 static int pfkey_promisc(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1513 struct pfkey_opt *pfk = pfkey_sk(sk);
1514 int satype = hdr->sadb_msg_satype;
1516 if (hdr->sadb_msg_len == (sizeof(*hdr) / sizeof(uint64_t))) {
1517 /* XXX we mangle packet... */
1518 hdr->sadb_msg_errno = 0;
1519 if (satype != 0 && satype != 1)
1521 pfk->promisc = satype;
1523 pfkey_broadcast(skb_clone(skb, GFP_KERNEL), GFP_KERNEL, BROADCAST_ALL, NULL);
1527 static int check_reqid(struct xfrm_policy *xp, int dir, int count, void *ptr)
1530 u32 reqid = *(u32*)ptr;
1532 for (i=0; i<xp->xfrm_nr; i++) {
1533 if (xp->xfrm_vec[i].reqid == reqid)
1539 static u32 gen_reqid(void)
1542 static u32 reqid = IPSEC_MANUAL_REQID_MAX;
1548 reqid = IPSEC_MANUAL_REQID_MAX+1;
1549 if (xfrm_policy_walk(check_reqid, (void*)&reqid) != -EEXIST)
1551 } while (reqid != start);
1556 parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq)
1558 struct xfrm_tmpl *t = xp->xfrm_vec + xp->xfrm_nr;
1559 struct sockaddr_in *sin;
1560 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1561 struct sockaddr_in6 *sin6;
1564 if (xp->xfrm_nr >= XFRM_MAX_DEPTH)
1567 if (rq->sadb_x_ipsecrequest_mode == 0)
1570 t->id.proto = rq->sadb_x_ipsecrequest_proto; /* XXX check proto */
1571 t->mode = rq->sadb_x_ipsecrequest_mode-1;
1572 if (rq->sadb_x_ipsecrequest_level == IPSEC_LEVEL_USE)
1574 else if (rq->sadb_x_ipsecrequest_level == IPSEC_LEVEL_UNIQUE) {
1575 t->reqid = rq->sadb_x_ipsecrequest_reqid;
1576 if (t->reqid > IPSEC_MANUAL_REQID_MAX)
1578 if (!t->reqid && !(t->reqid = gen_reqid()))
1582 /* addresses present only in tunnel mode */
1584 switch (xp->family) {
1586 sin = (void*)(rq+1);
1587 if (sin->sin_family != AF_INET)
1589 t->saddr.a4 = sin->sin_addr.s_addr;
1591 if (sin->sin_family != AF_INET)
1593 t->id.daddr.a4 = sin->sin_addr.s_addr;
1595 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1597 sin6 = (void *)(rq+1);
1598 if (sin6->sin6_family != AF_INET6)
1600 memcpy(t->saddr.a6, &sin6->sin6_addr, sizeof(struct in6_addr));
1602 if (sin6->sin6_family != AF_INET6)
1604 memcpy(t->id.daddr.a6, &sin6->sin6_addr, sizeof(struct in6_addr));
1611 /* No way to set this via kame pfkey */
1612 t->aalgos = t->ealgos = t->calgos = ~0;
1618 parse_ipsecrequests(struct xfrm_policy *xp, struct sadb_x_policy *pol)
1621 int len = pol->sadb_x_policy_len*8 - sizeof(struct sadb_x_policy);
1622 struct sadb_x_ipsecrequest *rq = (void*)(pol+1);
1624 while (len >= sizeof(struct sadb_x_ipsecrequest)) {
1625 if ((err = parse_ipsecrequest(xp, rq)) < 0)
1627 len -= rq->sadb_x_ipsecrequest_len;
1628 rq = (void*)((u8*)rq + rq->sadb_x_ipsecrequest_len);
1633 static int pfkey_xfrm_policy2msg_size(struct xfrm_policy *xp)
1635 int sockaddr_size = pfkey_sockaddr_size(xp->family);
1636 int socklen = (xp->family == AF_INET ?
1637 sizeof(struct sockaddr_in) :
1638 sizeof(struct sockaddr_in6));
1640 return sizeof(struct sadb_msg) +
1641 (sizeof(struct sadb_lifetime) * 3) +
1642 (sizeof(struct sadb_address) * 2) +
1643 (sockaddr_size * 2) +
1644 sizeof(struct sadb_x_policy) +
1645 (xp->xfrm_nr * (sizeof(struct sadb_x_ipsecrequest) +
1649 static struct sk_buff * pfkey_xfrm_policy2msg_prep(struct xfrm_policy *xp)
1651 struct sk_buff *skb;
1654 size = pfkey_xfrm_policy2msg_size(xp);
1656 skb = alloc_skb(size + 16, GFP_ATOMIC);
1658 return ERR_PTR(-ENOBUFS);
1663 static void pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, int dir)
1665 struct sadb_msg *hdr;
1666 struct sadb_address *addr;
1667 struct sadb_lifetime *lifetime;
1668 struct sadb_x_policy *pol;
1669 struct sockaddr_in *sin;
1670 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1671 struct sockaddr_in6 *sin6;
1675 int sockaddr_size = pfkey_sockaddr_size(xp->family);
1676 int socklen = (xp->family == AF_INET ?
1677 sizeof(struct sockaddr_in) :
1678 sizeof(struct sockaddr_in6));
1680 size = pfkey_xfrm_policy2msg_size(xp);
1682 /* call should fill header later */
1683 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
1684 memset(hdr, 0, size); /* XXX do we need this ? */
1687 addr = (struct sadb_address*) skb_put(skb,
1688 sizeof(struct sadb_address)+sockaddr_size);
1689 addr->sadb_address_len =
1690 (sizeof(struct sadb_address)+sockaddr_size)/
1692 addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
1693 addr->sadb_address_proto = pfkey_proto_from_xfrm(xp->selector.proto);
1694 addr->sadb_address_prefixlen = xp->selector.prefixlen_s;
1695 addr->sadb_address_reserved = 0;
1697 if (xp->family == AF_INET) {
1698 sin = (struct sockaddr_in *) (addr + 1);
1699 sin->sin_family = AF_INET;
1700 sin->sin_addr.s_addr = xp->selector.saddr.a4;
1701 sin->sin_port = xp->selector.sport;
1702 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
1704 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1705 else if (xp->family == AF_INET6) {
1706 sin6 = (struct sockaddr_in6 *) (addr + 1);
1707 sin6->sin6_family = AF_INET6;
1708 sin6->sin6_port = xp->selector.sport;
1709 sin6->sin6_flowinfo = 0;
1710 memcpy(&sin6->sin6_addr, xp->selector.saddr.a6,
1711 sizeof(struct in6_addr));
1712 sin6->sin6_scope_id = 0;
1719 addr = (struct sadb_address*) skb_put(skb,
1720 sizeof(struct sadb_address)+sockaddr_size);
1721 addr->sadb_address_len =
1722 (sizeof(struct sadb_address)+sockaddr_size)/
1724 addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST;
1725 addr->sadb_address_proto = pfkey_proto_from_xfrm(xp->selector.proto);
1726 addr->sadb_address_prefixlen = xp->selector.prefixlen_d;
1727 addr->sadb_address_reserved = 0;
1728 if (xp->family == AF_INET) {
1729 sin = (struct sockaddr_in *) (addr + 1);
1730 sin->sin_family = AF_INET;
1731 sin->sin_addr.s_addr = xp->selector.daddr.a4;
1732 sin->sin_port = xp->selector.dport;
1733 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
1735 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1736 else if (xp->family == AF_INET6) {
1737 sin6 = (struct sockaddr_in6 *) (addr + 1);
1738 sin6->sin6_family = AF_INET6;
1739 sin6->sin6_port = xp->selector.dport;
1740 sin6->sin6_flowinfo = 0;
1741 memcpy(&sin6->sin6_addr, xp->selector.daddr.a6,
1742 sizeof(struct in6_addr));
1743 sin6->sin6_scope_id = 0;
1750 lifetime = (struct sadb_lifetime *) skb_put(skb,
1751 sizeof(struct sadb_lifetime));
1752 lifetime->sadb_lifetime_len =
1753 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
1754 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
1755 lifetime->sadb_lifetime_allocations = _X2KEY(xp->lft.hard_packet_limit);
1756 lifetime->sadb_lifetime_bytes = _X2KEY(xp->lft.hard_byte_limit);
1757 lifetime->sadb_lifetime_addtime = xp->lft.hard_add_expires_seconds;
1758 lifetime->sadb_lifetime_usetime = xp->lft.hard_use_expires_seconds;
1760 lifetime = (struct sadb_lifetime *) skb_put(skb,
1761 sizeof(struct sadb_lifetime));
1762 lifetime->sadb_lifetime_len =
1763 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
1764 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
1765 lifetime->sadb_lifetime_allocations = _X2KEY(xp->lft.soft_packet_limit);
1766 lifetime->sadb_lifetime_bytes = _X2KEY(xp->lft.soft_byte_limit);
1767 lifetime->sadb_lifetime_addtime = xp->lft.soft_add_expires_seconds;
1768 lifetime->sadb_lifetime_usetime = xp->lft.soft_use_expires_seconds;
1770 lifetime = (struct sadb_lifetime *) skb_put(skb,
1771 sizeof(struct sadb_lifetime));
1772 lifetime->sadb_lifetime_len =
1773 sizeof(struct sadb_lifetime)/sizeof(uint64_t);
1774 lifetime->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
1775 lifetime->sadb_lifetime_allocations = xp->curlft.packets;
1776 lifetime->sadb_lifetime_bytes = xp->curlft.bytes;
1777 lifetime->sadb_lifetime_addtime = xp->curlft.add_time;
1778 lifetime->sadb_lifetime_usetime = xp->curlft.use_time;
1780 pol = (struct sadb_x_policy *) skb_put(skb, sizeof(struct sadb_x_policy));
1781 pol->sadb_x_policy_len = sizeof(struct sadb_x_policy)/sizeof(uint64_t);
1782 pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
1783 pol->sadb_x_policy_type = IPSEC_POLICY_DISCARD;
1784 if (xp->action == XFRM_POLICY_ALLOW) {
1786 pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
1788 pol->sadb_x_policy_type = IPSEC_POLICY_NONE;
1790 pol->sadb_x_policy_dir = dir+1;
1791 pol->sadb_x_policy_id = xp->index;
1792 pol->sadb_x_policy_priority = xp->priority;
1794 for (i=0; i<xp->xfrm_nr; i++) {
1795 struct sadb_x_ipsecrequest *rq;
1796 struct xfrm_tmpl *t = xp->xfrm_vec + i;
1799 req_size = sizeof(struct sadb_x_ipsecrequest);
1801 req_size += 2*socklen;
1804 rq = (void*)skb_put(skb, req_size);
1805 pol->sadb_x_policy_len += req_size/8;
1806 memset(rq, 0, sizeof(*rq));
1807 rq->sadb_x_ipsecrequest_len = req_size;
1808 rq->sadb_x_ipsecrequest_proto = t->id.proto;
1809 rq->sadb_x_ipsecrequest_mode = t->mode+1;
1810 rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_REQUIRE;
1812 rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_UNIQUE;
1814 rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_USE;
1815 rq->sadb_x_ipsecrequest_reqid = t->reqid;
1817 switch (xp->family) {
1819 sin = (void*)(rq+1);
1820 sin->sin_family = AF_INET;
1821 sin->sin_addr.s_addr = t->saddr.a4;
1823 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
1825 sin->sin_family = AF_INET;
1826 sin->sin_addr.s_addr = t->id.daddr.a4;
1828 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
1830 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1832 sin6 = (void*)(rq+1);
1833 sin6->sin6_family = AF_INET6;
1834 sin6->sin6_port = 0;
1835 sin6->sin6_flowinfo = 0;
1836 memcpy(&sin6->sin6_addr, t->saddr.a6,
1837 sizeof(struct in6_addr));
1838 sin6->sin6_scope_id = 0;
1841 sin6->sin6_family = AF_INET6;
1842 sin6->sin6_port = 0;
1843 sin6->sin6_flowinfo = 0;
1844 memcpy(&sin6->sin6_addr, t->id.daddr.a6,
1845 sizeof(struct in6_addr));
1846 sin6->sin6_scope_id = 0;
1854 hdr->sadb_msg_len = size / sizeof(uint64_t);
1855 hdr->sadb_msg_reserved = atomic_read(&xp->refcnt);
1858 static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1861 struct sadb_lifetime *lifetime;
1862 struct sadb_address *sa;
1863 struct sadb_x_policy *pol;
1864 struct xfrm_policy *xp;
1865 struct sk_buff *out_skb;
1866 struct sadb_msg *out_hdr;
1868 if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1869 ext_hdrs[SADB_EXT_ADDRESS_DST-1]) ||
1870 !ext_hdrs[SADB_X_EXT_POLICY-1])
1873 pol = ext_hdrs[SADB_X_EXT_POLICY-1];
1874 if (pol->sadb_x_policy_type > IPSEC_POLICY_IPSEC)
1876 if (!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir >= IPSEC_DIR_MAX)
1879 xp = xfrm_policy_alloc(GFP_KERNEL);
1883 xp->action = (pol->sadb_x_policy_type == IPSEC_POLICY_DISCARD ?
1884 XFRM_POLICY_BLOCK : XFRM_POLICY_ALLOW);
1885 xp->priority = pol->sadb_x_policy_priority;
1887 sa = ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1888 xp->family = pfkey_sadb_addr2xfrm_addr(sa, &xp->selector.saddr);
1893 xp->selector.family = xp->family;
1894 xp->selector.prefixlen_s = sa->sadb_address_prefixlen;
1895 xp->selector.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto);
1896 xp->selector.sport = ((struct sockaddr_in *)(sa+1))->sin_port;
1897 if (xp->selector.sport)
1898 xp->selector.sport_mask = ~0;
1900 sa = ext_hdrs[SADB_EXT_ADDRESS_DST-1],
1901 pfkey_sadb_addr2xfrm_addr(sa, &xp->selector.daddr);
1902 xp->selector.prefixlen_d = sa->sadb_address_prefixlen;
1904 /* Amusing, we set this twice. KAME apps appear to set same value
1905 * in both addresses.
1907 xp->selector.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto);
1909 xp->selector.dport = ((struct sockaddr_in *)(sa+1))->sin_port;
1910 if (xp->selector.dport)
1911 xp->selector.dport_mask = ~0;
1913 xp->lft.soft_byte_limit = XFRM_INF;
1914 xp->lft.hard_byte_limit = XFRM_INF;
1915 xp->lft.soft_packet_limit = XFRM_INF;
1916 xp->lft.hard_packet_limit = XFRM_INF;
1917 if ((lifetime = ext_hdrs[SADB_EXT_LIFETIME_HARD-1]) != NULL) {
1918 xp->lft.hard_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations);
1919 xp->lft.hard_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes);
1920 xp->lft.hard_add_expires_seconds = lifetime->sadb_lifetime_addtime;
1921 xp->lft.hard_use_expires_seconds = lifetime->sadb_lifetime_usetime;
1923 if ((lifetime = ext_hdrs[SADB_EXT_LIFETIME_SOFT-1]) != NULL) {
1924 xp->lft.soft_packet_limit = _KEY2X(lifetime->sadb_lifetime_allocations);
1925 xp->lft.soft_byte_limit = _KEY2X(lifetime->sadb_lifetime_bytes);
1926 xp->lft.soft_add_expires_seconds = lifetime->sadb_lifetime_addtime;
1927 xp->lft.soft_use_expires_seconds = lifetime->sadb_lifetime_usetime;
1930 if (pol->sadb_x_policy_type == IPSEC_POLICY_IPSEC &&
1931 (err = parse_ipsecrequests(xp, pol)) < 0)
1934 out_skb = pfkey_xfrm_policy2msg_prep(xp);
1935 if (IS_ERR(out_skb)) {
1936 err = PTR_ERR(out_skb);
1940 err = xfrm_policy_insert(pol->sadb_x_policy_dir-1, xp,
1941 hdr->sadb_msg_type != SADB_X_SPDUPDATE);
1947 pfkey_xfrm_policy2msg(out_skb, xp, pol->sadb_x_policy_dir-1);
1951 out_hdr = (struct sadb_msg *) out_skb->data;
1952 out_hdr->sadb_msg_version = hdr->sadb_msg_version;
1953 out_hdr->sadb_msg_type = hdr->sadb_msg_type;
1954 out_hdr->sadb_msg_satype = 0;
1955 out_hdr->sadb_msg_errno = 0;
1956 out_hdr->sadb_msg_seq = hdr->sadb_msg_seq;
1957 out_hdr->sadb_msg_pid = hdr->sadb_msg_pid;
1958 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ALL, sk);
1966 static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
1969 struct sadb_address *sa;
1970 struct sadb_x_policy *pol;
1971 struct xfrm_policy *xp;
1972 struct sk_buff *out_skb;
1973 struct sadb_msg *out_hdr;
1974 struct xfrm_selector sel;
1976 if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1977 ext_hdrs[SADB_EXT_ADDRESS_DST-1]) ||
1978 !ext_hdrs[SADB_X_EXT_POLICY-1])
1981 pol = ext_hdrs[SADB_X_EXT_POLICY-1];
1982 if (!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir >= IPSEC_DIR_MAX)
1985 memset(&sel, 0, sizeof(sel));
1987 sa = ext_hdrs[SADB_EXT_ADDRESS_SRC-1],
1988 sel.family = pfkey_sadb_addr2xfrm_addr(sa, &sel.saddr);
1989 sel.prefixlen_s = sa->sadb_address_prefixlen;
1990 sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto);
1991 sel.sport = ((struct sockaddr_in *)(sa+1))->sin_port;
1993 sel.sport_mask = ~0;
1995 sa = ext_hdrs[SADB_EXT_ADDRESS_DST-1],
1996 pfkey_sadb_addr2xfrm_addr(sa, &sel.daddr);
1997 sel.prefixlen_d = sa->sadb_address_prefixlen;
1998 sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto);
1999 sel.dport = ((struct sockaddr_in *)(sa+1))->sin_port;
2001 sel.dport_mask = ~0;
2003 xp = xfrm_policy_bysel(pol->sadb_x_policy_dir-1, &sel, 1);
2009 out_skb = pfkey_xfrm_policy2msg_prep(xp);
2010 if (IS_ERR(out_skb)) {
2011 err = PTR_ERR(out_skb);
2014 pfkey_xfrm_policy2msg(out_skb, xp, pol->sadb_x_policy_dir-1);
2016 out_hdr = (struct sadb_msg *) out_skb->data;
2017 out_hdr->sadb_msg_version = hdr->sadb_msg_version;
2018 out_hdr->sadb_msg_type = SADB_X_SPDDELETE;
2019 out_hdr->sadb_msg_satype = 0;
2020 out_hdr->sadb_msg_errno = 0;
2021 out_hdr->sadb_msg_seq = hdr->sadb_msg_seq;
2022 out_hdr->sadb_msg_pid = hdr->sadb_msg_pid;
2023 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ALL, sk);
2031 static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
2034 struct sadb_x_policy *pol;
2035 struct xfrm_policy *xp;
2036 struct sk_buff *out_skb;
2037 struct sadb_msg *out_hdr;
2039 if ((pol = ext_hdrs[SADB_X_EXT_POLICY-1]) == NULL)
2042 xp = xfrm_policy_byid(0, pol->sadb_x_policy_id,
2043 hdr->sadb_msg_type == SADB_X_SPDDELETE2);
2049 out_skb = pfkey_xfrm_policy2msg_prep(xp);
2050 if (IS_ERR(out_skb)) {
2051 err = PTR_ERR(out_skb);
2054 pfkey_xfrm_policy2msg(out_skb, xp, pol->sadb_x_policy_dir-1);
2056 out_hdr = (struct sadb_msg *) out_skb->data;
2057 out_hdr->sadb_msg_version = hdr->sadb_msg_version;
2058 out_hdr->sadb_msg_type = hdr->sadb_msg_type;
2059 out_hdr->sadb_msg_satype = 0;
2060 out_hdr->sadb_msg_errno = 0;
2061 out_hdr->sadb_msg_seq = hdr->sadb_msg_seq;
2062 out_hdr->sadb_msg_pid = hdr->sadb_msg_pid;
2063 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ALL, sk);
2071 static int dump_sp(struct xfrm_policy *xp, int dir, int count, void *ptr)
2073 struct pfkey_dump_data *data = ptr;
2074 struct sk_buff *out_skb;
2075 struct sadb_msg *out_hdr;
2077 out_skb = pfkey_xfrm_policy2msg_prep(xp);
2078 if (IS_ERR(out_skb))
2079 return PTR_ERR(out_skb);
2081 pfkey_xfrm_policy2msg(out_skb, xp, dir);
2083 out_hdr = (struct sadb_msg *) out_skb->data;
2084 out_hdr->sadb_msg_version = data->hdr->sadb_msg_version;
2085 out_hdr->sadb_msg_type = SADB_X_SPDDUMP;
2086 out_hdr->sadb_msg_satype = SADB_SATYPE_UNSPEC;
2087 out_hdr->sadb_msg_errno = 0;
2088 out_hdr->sadb_msg_seq = count;
2089 out_hdr->sadb_msg_pid = data->hdr->sadb_msg_pid;
2090 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_ONE, data->sk);
2094 static int pfkey_spddump(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
2096 struct pfkey_dump_data data = { .skb = skb, .hdr = hdr, .sk = sk };
2098 return xfrm_policy_walk(dump_sp, &data);
2101 static int pfkey_spdflush(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs)
2103 struct sk_buff *skb_out;
2104 struct sadb_msg *hdr_out;
2106 skb_out = alloc_skb(sizeof(struct sadb_msg) + 16, GFP_KERNEL);
2110 xfrm_policy_flush();
2112 hdr_out = (struct sadb_msg *) skb_put(skb_out, sizeof(struct sadb_msg));
2113 pfkey_hdr_dup(hdr_out, hdr);
2114 hdr_out->sadb_msg_errno = (uint8_t) 0;
2115 hdr_out->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t));
2116 pfkey_broadcast(skb_out, GFP_KERNEL, BROADCAST_ALL, NULL);
2121 typedef int (*pfkey_handler)(struct sock *sk, struct sk_buff *skb,
2122 struct sadb_msg *hdr, void **ext_hdrs);
2123 static pfkey_handler pfkey_funcs[SADB_MAX + 1] = {
2124 [SADB_RESERVED] = pfkey_reserved,
2125 [SADB_GETSPI] = pfkey_getspi,
2126 [SADB_UPDATE] = pfkey_add,
2127 [SADB_ADD] = pfkey_add,
2128 [SADB_DELETE] = pfkey_delete,
2129 [SADB_GET] = pfkey_get,
2130 [SADB_ACQUIRE] = pfkey_acquire,
2131 [SADB_REGISTER] = pfkey_register,
2132 [SADB_EXPIRE] = NULL,
2133 [SADB_FLUSH] = pfkey_flush,
2134 [SADB_DUMP] = pfkey_dump,
2135 [SADB_X_PROMISC] = pfkey_promisc,
2136 [SADB_X_PCHANGE] = NULL,
2137 [SADB_X_SPDUPDATE] = pfkey_spdadd,
2138 [SADB_X_SPDADD] = pfkey_spdadd,
2139 [SADB_X_SPDDELETE] = pfkey_spddelete,
2140 [SADB_X_SPDGET] = pfkey_spdget,
2141 [SADB_X_SPDACQUIRE] = NULL,
2142 [SADB_X_SPDDUMP] = pfkey_spddump,
2143 [SADB_X_SPDFLUSH] = pfkey_spdflush,
2144 [SADB_X_SPDSETIDX] = pfkey_spdadd,
2145 [SADB_X_SPDDELETE2] = pfkey_spdget,
2148 static int pfkey_process(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr)
2150 void *ext_hdrs[SADB_EXT_MAX];
2153 pfkey_broadcast(skb_clone(skb, GFP_KERNEL), GFP_KERNEL,
2154 BROADCAST_PROMISC_ONLY, NULL);
2156 memset(ext_hdrs, 0, sizeof(ext_hdrs));
2157 err = parse_exthdrs(skb, hdr, ext_hdrs);
2160 if (pfkey_funcs[hdr->sadb_msg_type])
2161 err = pfkey_funcs[hdr->sadb_msg_type](sk, skb, hdr, ext_hdrs);
2166 static struct sadb_msg *pfkey_get_base_msg(struct sk_buff *skb, int *errp)
2168 struct sadb_msg *hdr = NULL;
2170 if (skb->len < sizeof(*hdr)) {
2173 hdr = (struct sadb_msg *) skb->data;
2174 if (hdr->sadb_msg_version != PF_KEY_V2 ||
2175 hdr->sadb_msg_reserved != 0 ||
2176 (hdr->sadb_msg_type <= SADB_RESERVED ||
2177 hdr->sadb_msg_type > SADB_MAX)) {
2180 } else if (hdr->sadb_msg_len != (skb->len /
2181 sizeof(uint64_t)) ||
2182 hdr->sadb_msg_len < (sizeof(struct sadb_msg) /
2183 sizeof(uint64_t))) {
2193 static inline int aalg_tmpl_set(struct xfrm_tmpl *t, struct xfrm_algo_desc *d)
2195 return t->aalgos & (1 << d->desc.sadb_alg_id);
2198 static inline int ealg_tmpl_set(struct xfrm_tmpl *t, struct xfrm_algo_desc *d)
2200 return t->ealgos & (1 << d->desc.sadb_alg_id);
2203 static int count_ah_combs(struct xfrm_tmpl *t)
2207 for (i = 0; ; i++) {
2208 struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i);
2211 if (aalg_tmpl_set(t, aalg) && aalg->available)
2212 sz += sizeof(struct sadb_comb);
2214 return sz + sizeof(struct sadb_prop);
2217 static int count_esp_combs(struct xfrm_tmpl *t)
2221 for (i = 0; ; i++) {
2222 struct xfrm_algo_desc *ealg = xfrm_ealg_get_byidx(i);
2226 if (!(ealg_tmpl_set(t, ealg) && ealg->available))
2229 for (k = 1; ; k++) {
2230 struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(k);
2234 if (aalg_tmpl_set(t, aalg) && aalg->available)
2235 sz += sizeof(struct sadb_comb);
2238 return sz + sizeof(struct sadb_prop);
2241 static void dump_ah_combs(struct sk_buff *skb, struct xfrm_tmpl *t)
2243 struct sadb_prop *p;
2246 p = (struct sadb_prop*)skb_put(skb, sizeof(struct sadb_prop));
2247 p->sadb_prop_len = sizeof(struct sadb_prop)/8;
2248 p->sadb_prop_exttype = SADB_EXT_PROPOSAL;
2249 p->sadb_prop_replay = 32;
2250 memset(p->sadb_prop_reserved, 0, sizeof(p->sadb_prop_reserved));
2252 for (i = 0; ; i++) {
2253 struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i);
2257 if (aalg_tmpl_set(t, aalg) && aalg->available) {
2258 struct sadb_comb *c;
2259 c = (struct sadb_comb*)skb_put(skb, sizeof(struct sadb_comb));
2260 memset(c, 0, sizeof(*c));
2261 p->sadb_prop_len += sizeof(struct sadb_comb)/8;
2262 c->sadb_comb_auth = aalg->desc.sadb_alg_id;
2263 c->sadb_comb_auth_minbits = aalg->desc.sadb_alg_minbits;
2264 c->sadb_comb_auth_maxbits = aalg->desc.sadb_alg_maxbits;
2265 c->sadb_comb_hard_addtime = 24*60*60;
2266 c->sadb_comb_soft_addtime = 20*60*60;
2267 c->sadb_comb_hard_usetime = 8*60*60;
2268 c->sadb_comb_soft_usetime = 7*60*60;
2273 static void dump_esp_combs(struct sk_buff *skb, struct xfrm_tmpl *t)
2275 struct sadb_prop *p;
2278 p = (struct sadb_prop*)skb_put(skb, sizeof(struct sadb_prop));
2279 p->sadb_prop_len = sizeof(struct sadb_prop)/8;
2280 p->sadb_prop_exttype = SADB_EXT_PROPOSAL;
2281 p->sadb_prop_replay = 32;
2282 memset(p->sadb_prop_reserved, 0, sizeof(p->sadb_prop_reserved));
2285 struct xfrm_algo_desc *ealg = xfrm_ealg_get_byidx(i);
2289 if (!(ealg_tmpl_set(t, ealg) && ealg->available))
2292 for (k = 1; ; k++) {
2293 struct sadb_comb *c;
2294 struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(k);
2297 if (!(aalg_tmpl_set(t, aalg) && aalg->available))
2299 c = (struct sadb_comb*)skb_put(skb, sizeof(struct sadb_comb));
2300 memset(c, 0, sizeof(*c));
2301 p->sadb_prop_len += sizeof(struct sadb_comb)/8;
2302 c->sadb_comb_auth = aalg->desc.sadb_alg_id;
2303 c->sadb_comb_auth_minbits = aalg->desc.sadb_alg_minbits;
2304 c->sadb_comb_auth_maxbits = aalg->desc.sadb_alg_maxbits;
2305 c->sadb_comb_encrypt = ealg->desc.sadb_alg_id;
2306 c->sadb_comb_encrypt_minbits = ealg->desc.sadb_alg_minbits;
2307 c->sadb_comb_encrypt_maxbits = ealg->desc.sadb_alg_maxbits;
2308 c->sadb_comb_hard_addtime = 24*60*60;
2309 c->sadb_comb_soft_addtime = 20*60*60;
2310 c->sadb_comb_hard_usetime = 8*60*60;
2311 c->sadb_comb_soft_usetime = 7*60*60;
2316 static int pfkey_send_notify(struct xfrm_state *x, int hard)
2318 struct sk_buff *out_skb;
2319 struct sadb_msg *out_hdr;
2320 int hsc = (hard ? 2 : 1);
2322 out_skb = pfkey_xfrm_state2msg(x, 0, hsc);
2323 if (IS_ERR(out_skb))
2324 return PTR_ERR(out_skb);
2326 out_hdr = (struct sadb_msg *) out_skb->data;
2327 out_hdr->sadb_msg_version = PF_KEY_V2;
2328 out_hdr->sadb_msg_type = SADB_EXPIRE;
2329 out_hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto);
2330 out_hdr->sadb_msg_errno = 0;
2331 out_hdr->sadb_msg_reserved = 0;
2332 out_hdr->sadb_msg_seq = 0;
2333 out_hdr->sadb_msg_pid = 0;
2335 pfkey_broadcast(out_skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL);
2339 static u32 get_acqseq(void)
2343 static spinlock_t acqseq_lock = SPIN_LOCK_UNLOCKED;
2345 spin_lock_bh(&acqseq_lock);
2346 res = (++acqseq ? : ++acqseq);
2347 spin_unlock_bh(&acqseq_lock);
2351 static int pfkey_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *xp, int dir)
2353 struct sk_buff *skb;
2354 struct sadb_msg *hdr;
2355 struct sadb_address *addr;
2356 struct sadb_x_policy *pol;
2357 struct sockaddr_in *sin;
2358 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2359 struct sockaddr_in6 *sin6;
2364 sockaddr_size = pfkey_sockaddr_size(x->props.family);
2368 size = sizeof(struct sadb_msg) +
2369 (sizeof(struct sadb_address) * 2) +
2370 (sockaddr_size * 2) +
2371 sizeof(struct sadb_x_policy);
2373 if (x->id.proto == IPPROTO_AH)
2374 size += count_ah_combs(t);
2375 else if (x->id.proto == IPPROTO_ESP)
2376 size += count_esp_combs(t);
2378 skb = alloc_skb(size + 16, GFP_ATOMIC);
2382 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
2383 hdr->sadb_msg_version = PF_KEY_V2;
2384 hdr->sadb_msg_type = SADB_ACQUIRE;
2385 hdr->sadb_msg_satype = pfkey_proto2satype(x->id.proto);
2386 hdr->sadb_msg_len = size / sizeof(uint64_t);
2387 hdr->sadb_msg_errno = 0;
2388 hdr->sadb_msg_reserved = 0;
2389 hdr->sadb_msg_seq = x->km.seq = get_acqseq();
2390 hdr->sadb_msg_pid = 0;
2393 addr = (struct sadb_address*) skb_put(skb,
2394 sizeof(struct sadb_address)+sockaddr_size);
2395 addr->sadb_address_len =
2396 (sizeof(struct sadb_address)+sockaddr_size)/
2398 addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
2399 addr->sadb_address_proto = 0;
2400 addr->sadb_address_reserved = 0;
2401 if (x->props.family == AF_INET) {
2402 addr->sadb_address_prefixlen = 32;
2404 sin = (struct sockaddr_in *) (addr + 1);
2405 sin->sin_family = AF_INET;
2406 sin->sin_addr.s_addr = x->props.saddr.a4;
2408 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
2410 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2411 else if (x->props.family == AF_INET6) {
2412 addr->sadb_address_prefixlen = 128;
2414 sin6 = (struct sockaddr_in6 *) (addr + 1);
2415 sin6->sin6_family = AF_INET6;
2416 sin6->sin6_port = 0;
2417 sin6->sin6_flowinfo = 0;
2418 memcpy(&sin6->sin6_addr,
2419 x->props.saddr.a6, sizeof(struct in6_addr));
2420 sin6->sin6_scope_id = 0;
2427 addr = (struct sadb_address*) skb_put(skb,
2428 sizeof(struct sadb_address)+sockaddr_size);
2429 addr->sadb_address_len =
2430 (sizeof(struct sadb_address)+sockaddr_size)/
2432 addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST;
2433 addr->sadb_address_proto = 0;
2434 addr->sadb_address_reserved = 0;
2435 if (x->props.family == AF_INET) {
2436 addr->sadb_address_prefixlen = 32;
2438 sin = (struct sockaddr_in *) (addr + 1);
2439 sin->sin_family = AF_INET;
2440 sin->sin_addr.s_addr = x->id.daddr.a4;
2442 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
2444 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2445 else if (x->props.family == AF_INET6) {
2446 addr->sadb_address_prefixlen = 128;
2448 sin6 = (struct sockaddr_in6 *) (addr + 1);
2449 sin6->sin6_family = AF_INET6;
2450 sin6->sin6_port = 0;
2451 sin6->sin6_flowinfo = 0;
2452 memcpy(&sin6->sin6_addr,
2453 x->id.daddr.a6, sizeof(struct in6_addr));
2454 sin6->sin6_scope_id = 0;
2460 pol = (struct sadb_x_policy *) skb_put(skb, sizeof(struct sadb_x_policy));
2461 pol->sadb_x_policy_len = sizeof(struct sadb_x_policy)/sizeof(uint64_t);
2462 pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
2463 pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
2464 pol->sadb_x_policy_dir = dir+1;
2465 pol->sadb_x_policy_id = xp->index;
2467 /* Set sadb_comb's. */
2468 if (x->id.proto == IPPROTO_AH)
2469 dump_ah_combs(skb, t);
2470 else if (x->id.proto == IPPROTO_ESP)
2471 dump_esp_combs(skb, t);
2473 return pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL);
2476 static struct xfrm_policy *pfkey_compile_policy(u16 family, int opt,
2477 u8 *data, int len, int *dir)
2479 struct xfrm_policy *xp;
2480 struct sadb_x_policy *pol = (struct sadb_x_policy*)data;
2484 if (opt != IP_IPSEC_POLICY) {
2489 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2491 if (opt != IPV6_IPSEC_POLICY) {
2504 if (len < sizeof(struct sadb_x_policy) ||
2505 pol->sadb_x_policy_len*8 > len ||
2506 pol->sadb_x_policy_type > IPSEC_POLICY_BYPASS ||
2507 (!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir > IPSEC_DIR_OUTBOUND))
2510 xp = xfrm_policy_alloc(GFP_ATOMIC);
2516 xp->action = (pol->sadb_x_policy_type == IPSEC_POLICY_DISCARD ?
2517 XFRM_POLICY_BLOCK : XFRM_POLICY_ALLOW);
2519 xp->lft.soft_byte_limit = XFRM_INF;
2520 xp->lft.hard_byte_limit = XFRM_INF;
2521 xp->lft.soft_packet_limit = XFRM_INF;
2522 xp->lft.hard_packet_limit = XFRM_INF;
2523 xp->family = family;
2526 if (pol->sadb_x_policy_type == IPSEC_POLICY_IPSEC &&
2527 (*dir = parse_ipsecrequests(xp, pol)) < 0)
2530 *dir = pol->sadb_x_policy_dir-1;
2538 static int pfkey_send_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, u16 sport)
2540 struct sk_buff *skb;
2541 struct sadb_msg *hdr;
2543 struct sadb_address *addr;
2544 struct sadb_x_nat_t_port *n_port;
2545 struct sockaddr_in *sin;
2546 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2547 struct sockaddr_in6 *sin6;
2551 __u8 satype = (x->id.proto == IPPROTO_ESP ? SADB_SATYPE_ESP : 0);
2552 struct xfrm_encap_tmpl *natt = NULL;
2554 sockaddr_size = pfkey_sockaddr_size(x->props.family);
2566 /* Build an SADB_X_NAT_T_NEW_MAPPING message:
2568 * HDR | SA | ADDRESS_SRC (old addr) | NAT_T_SPORT (old port) |
2569 * ADDRESS_DST (new addr) | NAT_T_DPORT (new port)
2572 size = sizeof(struct sadb_msg) +
2573 sizeof(struct sadb_sa) +
2574 (sizeof(struct sadb_address) * 2) +
2575 (sockaddr_size * 2) +
2576 (sizeof(struct sadb_x_nat_t_port) * 2);
2578 skb = alloc_skb(size + 16, GFP_ATOMIC);
2582 hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
2583 hdr->sadb_msg_version = PF_KEY_V2;
2584 hdr->sadb_msg_type = SADB_X_NAT_T_NEW_MAPPING;
2585 hdr->sadb_msg_satype = satype;
2586 hdr->sadb_msg_len = size / sizeof(uint64_t);
2587 hdr->sadb_msg_errno = 0;
2588 hdr->sadb_msg_reserved = 0;
2589 hdr->sadb_msg_seq = x->km.seq = get_acqseq();
2590 hdr->sadb_msg_pid = 0;
2593 sa = (struct sadb_sa *) skb_put(skb, sizeof(struct sadb_sa));
2594 sa->sadb_sa_len = sizeof(struct sadb_sa)/sizeof(uint64_t);
2595 sa->sadb_sa_exttype = SADB_EXT_SA;
2596 sa->sadb_sa_spi = x->id.spi;
2597 sa->sadb_sa_replay = 0;
2598 sa->sadb_sa_state = 0;
2599 sa->sadb_sa_auth = 0;
2600 sa->sadb_sa_encrypt = 0;
2601 sa->sadb_sa_flags = 0;
2603 /* ADDRESS_SRC (old addr) */
2604 addr = (struct sadb_address*)
2605 skb_put(skb, sizeof(struct sadb_address)+sockaddr_size);
2606 addr->sadb_address_len =
2607 (sizeof(struct sadb_address)+sockaddr_size)/
2609 addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
2610 addr->sadb_address_proto = 0;
2611 addr->sadb_address_reserved = 0;
2612 if (x->props.family == AF_INET) {
2613 addr->sadb_address_prefixlen = 32;
2615 sin = (struct sockaddr_in *) (addr + 1);
2616 sin->sin_family = AF_INET;
2617 sin->sin_addr.s_addr = x->props.saddr.a4;
2619 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
2621 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2622 else if (x->props.family == AF_INET6) {
2623 addr->sadb_address_prefixlen = 128;
2625 sin6 = (struct sockaddr_in6 *) (addr + 1);
2626 sin6->sin6_family = AF_INET6;
2627 sin6->sin6_port = 0;
2628 sin6->sin6_flowinfo = 0;
2629 memcpy(&sin6->sin6_addr,
2630 x->props.saddr.a6, sizeof(struct in6_addr));
2631 sin6->sin6_scope_id = 0;
2637 /* NAT_T_SPORT (old port) */
2638 n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
2639 n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
2640 n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT;
2641 n_port->sadb_x_nat_t_port_port = natt->encap_sport;
2642 n_port->sadb_x_nat_t_port_reserved = 0;
2644 /* ADDRESS_DST (new addr) */
2645 addr = (struct sadb_address*)
2646 skb_put(skb, sizeof(struct sadb_address)+sockaddr_size);
2647 addr->sadb_address_len =
2648 (sizeof(struct sadb_address)+sockaddr_size)/
2650 addr->sadb_address_exttype = SADB_EXT_ADDRESS_DST;
2651 addr->sadb_address_proto = 0;
2652 addr->sadb_address_reserved = 0;
2653 if (x->props.family == AF_INET) {
2654 addr->sadb_address_prefixlen = 32;
2656 sin = (struct sockaddr_in *) (addr + 1);
2657 sin->sin_family = AF_INET;
2658 sin->sin_addr.s_addr = ipaddr->a4;
2660 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
2662 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2663 else if (x->props.family == AF_INET6) {
2664 addr->sadb_address_prefixlen = 128;
2666 sin6 = (struct sockaddr_in6 *) (addr + 1);
2667 sin6->sin6_family = AF_INET6;
2668 sin6->sin6_port = 0;
2669 sin6->sin6_flowinfo = 0;
2670 memcpy(&sin6->sin6_addr, &ipaddr->a6, sizeof(struct in6_addr));
2671 sin6->sin6_scope_id = 0;
2677 /* NAT_T_DPORT (new port) */
2678 n_port = (struct sadb_x_nat_t_port*) skb_put(skb, sizeof (*n_port));
2679 n_port->sadb_x_nat_t_port_len = sizeof(*n_port)/sizeof(uint64_t);
2680 n_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT;
2681 n_port->sadb_x_nat_t_port_port = sport;
2682 n_port->sadb_x_nat_t_port_reserved = 0;
2684 return pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL);
2687 static int pfkey_sendmsg(struct kiocb *kiocb,
2688 struct socket *sock, struct msghdr *msg, size_t len)
2690 struct sock *sk = sock->sk;
2691 struct sk_buff *skb = NULL;
2692 struct sadb_msg *hdr = NULL;
2696 if (msg->msg_flags & MSG_OOB)
2700 if ((unsigned)len > sk->sk_sndbuf - 32)
2704 skb = alloc_skb(len, GFP_KERNEL);
2709 if (memcpy_fromiovec(skb_put(skb,len), msg->msg_iov, len))
2712 hdr = pfkey_get_base_msg(skb, &err);
2716 down(&xfrm_cfg_sem);
2717 err = pfkey_process(sk, skb, hdr);
2721 if (err && hdr && pfkey_error(hdr, err, sk) == 0)
2729 static int pfkey_recvmsg(struct kiocb *kiocb,
2730 struct socket *sock, struct msghdr *msg, size_t len,
2733 struct sock *sk = sock->sk;
2734 struct sk_buff *skb;
2738 if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC|MSG_CMSG_COMPAT))
2741 msg->msg_namelen = 0;
2742 skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err);
2748 msg->msg_flags |= MSG_TRUNC;
2752 skb->h.raw = skb->data;
2753 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
2757 sock_recv_timestamp(msg, sk, skb);
2759 err = (flags & MSG_TRUNC) ? skb->len : copied;
2762 skb_free_datagram(sk, skb);
2767 static struct proto_ops pfkey_ops = {
2769 .owner = THIS_MODULE,
2770 /* Operations that make no sense on pfkey sockets. */
2771 .bind = sock_no_bind,
2772 .connect = sock_no_connect,
2773 .socketpair = sock_no_socketpair,
2774 .accept = sock_no_accept,
2775 .getname = sock_no_getname,
2776 .ioctl = sock_no_ioctl,
2777 .listen = sock_no_listen,
2778 .shutdown = sock_no_shutdown,
2779 .setsockopt = sock_no_setsockopt,
2780 .getsockopt = sock_no_getsockopt,
2781 .mmap = sock_no_mmap,
2782 .sendpage = sock_no_sendpage,
2784 /* Now the operations that really occur. */
2785 .release = pfkey_release,
2786 .poll = datagram_poll,
2787 .sendmsg = pfkey_sendmsg,
2788 .recvmsg = pfkey_recvmsg,
2791 static struct net_proto_family pfkey_family_ops = {
2793 .create = pfkey_create,
2794 .owner = THIS_MODULE,
2797 #ifdef CONFIG_PROC_FS
2798 static int pfkey_read_proc(char *buffer, char **start, off_t offset,
2799 int length, int *eof, void *data)
2805 struct hlist_node *node;
2807 len += sprintf(buffer,"sk RefCnt Rmem Wmem User Inode\n");
2809 read_lock(&pfkey_table_lock);
2811 sk_for_each(s, node, &pfkey_table) {
2812 len += sprintf(buffer+len,"%p %-6d %-6u %-6u %-6u %-6lu",
2814 atomic_read(&s->sk_refcnt),
2815 atomic_read(&s->sk_rmem_alloc),
2816 atomic_read(&s->sk_wmem_alloc),
2821 buffer[len++] = '\n';
2828 if(pos > offset + length)
2834 read_unlock(&pfkey_table_lock);
2836 *start = buffer + (offset - begin);
2837 len -= (offset - begin);
2848 static struct xfrm_mgr pfkeyv2_mgr =
2851 .notify = pfkey_send_notify,
2852 .acquire = pfkey_send_acquire,
2853 .compile_policy = pfkey_compile_policy,
2854 .new_mapping = pfkey_send_new_mapping,
2857 static void __exit ipsec_pfkey_exit(void)
2859 xfrm_unregister_km(&pfkeyv2_mgr);
2860 remove_proc_entry("net/pfkey", NULL);
2861 sock_unregister(PF_KEY);
2864 static int __init ipsec_pfkey_init(void)
2866 sock_register(&pfkey_family_ops);
2867 #ifdef CONFIG_PROC_FS
2868 create_proc_read_entry("net/pfkey", 0, NULL, pfkey_read_proc, NULL);
2870 xfrm_register_km(&pfkeyv2_mgr);
2874 module_init(ipsec_pfkey_init);
2875 module_exit(ipsec_pfkey_exit);
2876 MODULE_LICENSE("GPL");
2877 MODULE_ALIAS_NETPROTO(PF_KEY);