4 #include <linux/compiler.h>
5 #include <linux/xfrm.h>
6 #include <linux/spinlock.h>
7 #include <linux/list.h>
8 #include <linux/skbuff.h>
9 #include <linux/socket.h>
10 #include <linux/pfkeyv2.h>
11 #include <linux/ipsec.h>
12 #include <linux/in6.h>
13 #include <linux/mutex.h>
14 #include <linux/audit.h>
15 #include <linux/slab.h>
20 #include <net/route.h>
22 #include <net/ip6_fib.h>
25 #include <linux/interrupt.h>
27 #ifdef CONFIG_XFRM_STATISTICS
31 #define XFRM_PROTO_ESP 50
32 #define XFRM_PROTO_AH 51
33 #define XFRM_PROTO_COMP 108
34 #define XFRM_PROTO_IPIP 4
35 #define XFRM_PROTO_IPV6 41
36 #define XFRM_PROTO_ROUTING IPPROTO_ROUTING
37 #define XFRM_PROTO_DSTOPTS IPPROTO_DSTOPTS
39 #define XFRM_ALIGN8(len) (((len) + 7) & ~7)
40 #define MODULE_ALIAS_XFRM_MODE(family, encap) \
41 MODULE_ALIAS("xfrm-mode-" __stringify(family) "-" __stringify(encap))
42 #define MODULE_ALIAS_XFRM_TYPE(family, proto) \
43 MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto))
45 #ifdef CONFIG_XFRM_STATISTICS
46 #define XFRM_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.xfrm_statistics, field)
47 #define XFRM_INC_STATS_BH(net, field) SNMP_INC_STATS_BH((net)->mib.xfrm_statistics, field)
48 #define XFRM_INC_STATS_USER(net, field) SNMP_INC_STATS_USER((net)-mib.xfrm_statistics, field)
50 #define XFRM_INC_STATS(net, field) ((void)(net))
51 #define XFRM_INC_STATS_BH(net, field) ((void)(net))
52 #define XFRM_INC_STATS_USER(net, field) ((void)(net))
55 extern struct mutex xfrm_cfg_mutex;
57 /* Organization of SPD aka "XFRM rules"
58 ------------------------------------
61 - policy rule, struct xfrm_policy (=SPD entry)
62 - bundle of transformations, struct dst_entry == struct xfrm_dst (=SA bundle)
63 - instance of a transformer, struct xfrm_state (=SA)
64 - template to clone xfrm_state, struct xfrm_tmpl
66 SPD is plain linear list of xfrm_policy rules, ordered by priority.
67 (To be compatible with existing pfkeyv2 implementations,
68 many rules with priority of 0x7fffffff are allowed to exist and
69 such rules are ordered in an unpredictable way, thanks to bsd folks.)
71 Lookup is plain linear search until the first match with selector.
73 If "action" is "block", then we prohibit the flow, otherwise:
74 if "xfrms_nr" is zero, the flow passes untransformed. Otherwise,
75 policy entry has list of up to XFRM_MAX_DEPTH transformations,
76 described by templates xfrm_tmpl. Each template is resolved
77 to a complete xfrm_state (see below) and we pack bundle of transformations
78 to a dst_entry returned to requestor.
80 dst -. xfrm .-> xfrm_state #1
81 |---. child .-> dst -. xfrm .-> xfrm_state #2
82 |---. child .-> dst -. xfrm .-> xfrm_state #3
85 Bundles are cached at xrfm_policy struct (field ->bundles).
88 Resolution of xrfm_tmpl
89 -----------------------
91 1. ->mode Mode: transport or tunnel
92 2. ->id.proto Protocol: AH/ESP/IPCOMP
93 3. ->id.daddr Remote tunnel endpoint, ignored for transport mode.
94 Q: allow to resolve security gateway?
95 4. ->id.spi If not zero, static SPI.
96 5. ->saddr Local tunnel endpoint, ignored for transport mode.
97 6. ->algos List of allowed algos. Plain bitmask now.
98 Q: ealgos, aalgos, calgos. What a mess...
99 7. ->share Sharing mode.
100 Q: how to implement private sharing mode? To add struct sock* to
103 Having this template we search through SAD searching for entries
104 with appropriate mode/proto/algo, permitted by selector.
105 If no appropriate entry found, it is requested from key manager.
108 Q: How to find all the bundles referring to a physical path for
109 PMTU discovery? Seems, dst should contain list of all parents...
110 and enter to infinite locking hierarchy disaster.
111 No! It is easier, we will not search for them, let them find us.
112 We add genid to each dst plus pointer to genid of raw IP route,
113 pmtu disc will update pmtu on raw IP route and increase its genid.
114 dst_check() will see this for top level and trigger resyncing
115 metrics. Plus, it will be made via sk->sk_dst_cache. Solved.
118 struct xfrm_state_walk {
119 struct list_head all;
128 /* Full description of state of transformer. */
134 struct hlist_node gclist;
135 struct hlist_node bydst;
137 struct hlist_node bysrc;
138 struct hlist_node byspi;
144 struct xfrm_selector sel;
145 struct xfrm_mark mark;
149 /* Key manager bits */
150 struct xfrm_state_walk km;
152 /* Parameters of this state. */
157 u8 aalgo, ealgo, calgo;
160 xfrm_address_t saddr;
165 struct xfrm_lifetime_cfg lft;
167 /* Data for transformer */
168 struct xfrm_algo_auth *aalg;
169 struct xfrm_algo *ealg;
170 struct xfrm_algo *calg;
171 struct xfrm_algo_aead *aead;
173 /* Data for encapsulator */
174 struct xfrm_encap_tmpl *encap;
176 /* Data for care-of address */
177 xfrm_address_t *coaddr;
179 /* IPComp needs an IPIP tunnel for handling uncompressed packets */
180 struct xfrm_state *tunnel;
182 /* If a tunnel, number of users + 1 */
183 atomic_t tunnel_users;
185 /* State for replay detection */
186 struct xfrm_replay_state replay;
188 /* Replay detection state at the time we sent the last notification */
189 struct xfrm_replay_state preplay;
191 /* internal flag that only holds state for delayed aevent at the
196 /* Replay detection notification settings */
200 /* Replay detection notification timer */
201 struct timer_list rtimer;
204 struct xfrm_stats stats;
206 struct xfrm_lifetime_cur curlft;
207 struct tasklet_hrtimer mtimer;
210 unsigned long lastused;
212 /* Reference to data common to all the instances of this
214 const struct xfrm_type *type;
215 struct xfrm_mode *inner_mode;
216 struct xfrm_mode *inner_mode_iaf;
217 struct xfrm_mode *outer_mode;
219 /* Security context */
220 struct xfrm_sec_ctx *security;
222 /* Private data of this transformer, format is opaque,
223 * interpreted by xfrm_type methods. */
227 static inline struct net *xs_net(struct xfrm_state *x)
229 return read_pnet(&x->xs_net);
232 /* xflags - make enum if more show up */
233 #define XFRM_TIME_DEFER 1
244 /* callback structure passed from either netlink or pfkey */
263 struct xfrm_policy_afinfo {
264 unsigned short family;
265 struct dst_ops *dst_ops;
266 void (*garbage_collect)(struct net *net);
267 struct dst_entry *(*dst_lookup)(struct net *net, int tos,
268 xfrm_address_t *saddr,
269 xfrm_address_t *daddr);
270 int (*get_saddr)(struct net *net, xfrm_address_t *saddr, xfrm_address_t *daddr);
271 void (*decode_session)(struct sk_buff *skb,
274 int (*get_tos)(struct flowi *fl);
275 int (*init_path)(struct xfrm_dst *path,
276 struct dst_entry *dst,
278 int (*fill_dst)(struct xfrm_dst *xdst,
279 struct net_device *dev,
283 extern int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo);
284 extern int xfrm_policy_unregister_afinfo(struct xfrm_policy_afinfo *afinfo);
285 extern void km_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c);
286 extern void km_state_notify(struct xfrm_state *x, struct km_event *c);
289 extern int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol);
290 extern void km_state_expired(struct xfrm_state *x, int hard, u32 pid);
291 extern int __xfrm_state_delete(struct xfrm_state *x);
293 struct xfrm_state_afinfo {
297 struct module *owner;
298 const struct xfrm_type *type_map[IPPROTO_MAX];
299 struct xfrm_mode *mode_map[XFRM_MODE_MAX];
300 int (*init_flags)(struct xfrm_state *x);
301 void (*init_tempsel)(struct xfrm_selector *sel, struct flowi *fl);
302 void (*init_temprop)(struct xfrm_state *x, struct xfrm_tmpl *tmpl,
303 xfrm_address_t *daddr, xfrm_address_t *saddr);
304 int (*tmpl_sort)(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n);
305 int (*state_sort)(struct xfrm_state **dst, struct xfrm_state **src, int n);
306 int (*output)(struct sk_buff *skb);
307 int (*extract_input)(struct xfrm_state *x,
308 struct sk_buff *skb);
309 int (*extract_output)(struct xfrm_state *x,
310 struct sk_buff *skb);
311 int (*transport_finish)(struct sk_buff *skb,
315 extern int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo);
316 extern int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo);
318 extern void xfrm_state_delete_tunnel(struct xfrm_state *x);
322 struct module *owner;
325 #define XFRM_TYPE_NON_FRAGMENT 1
326 #define XFRM_TYPE_REPLAY_PROT 2
327 #define XFRM_TYPE_LOCAL_COADDR 4
328 #define XFRM_TYPE_REMOTE_COADDR 8
330 int (*init_state)(struct xfrm_state *x);
331 void (*destructor)(struct xfrm_state *);
332 int (*input)(struct xfrm_state *, struct sk_buff *skb);
333 int (*output)(struct xfrm_state *, struct sk_buff *pskb);
334 int (*reject)(struct xfrm_state *, struct sk_buff *, struct flowi *);
335 int (*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **);
336 /* Estimate maximal size of result of transformation of a dgram */
337 u32 (*get_mtu)(struct xfrm_state *, int size);
340 extern int xfrm_register_type(const struct xfrm_type *type, unsigned short family);
341 extern int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family);
345 * Remove encapsulation header.
347 * The IP header will be moved over the top of the encapsulation
350 * On entry, the transport header shall point to where the IP header
351 * should be and the network header shall be set to where the IP
352 * header currently is. skb->data shall point to the start of the
355 int (*input2)(struct xfrm_state *x, struct sk_buff *skb);
358 * This is the actual input entry point.
360 * For transport mode and equivalent this would be identical to
361 * input2 (which does not need to be set). While tunnel mode
362 * and equivalent would set this to the tunnel encapsulation function
363 * xfrm4_prepare_input that would in turn call input2.
365 int (*input)(struct xfrm_state *x, struct sk_buff *skb);
368 * Add encapsulation header.
370 * On exit, the transport header will be set to the start of the
371 * encapsulation header to be filled in by x->type->output and
372 * the mac header will be set to the nextheader (protocol for
373 * IPv4) field of the extension header directly preceding the
374 * encapsulation header, or in its absence, that of the top IP
375 * header. The value of the network header will always point
376 * to the top IP header while skb->data will point to the payload.
378 int (*output2)(struct xfrm_state *x,struct sk_buff *skb);
381 * This is the actual output entry point.
383 * For transport mode and equivalent this would be identical to
384 * output2 (which does not need to be set). While tunnel mode
385 * and equivalent would set this to a tunnel encapsulation function
386 * (xfrm4_prepare_output or xfrm6_prepare_output) that would in turn
389 int (*output)(struct xfrm_state *x, struct sk_buff *skb);
391 struct xfrm_state_afinfo *afinfo;
392 struct module *owner;
397 /* Flags for xfrm_mode. */
399 XFRM_MODE_FLAG_TUNNEL = 1,
402 extern int xfrm_register_mode(struct xfrm_mode *mode, int family);
403 extern int xfrm_unregister_mode(struct xfrm_mode *mode, int family);
405 static inline int xfrm_af2proto(unsigned int family)
417 static inline struct xfrm_mode *xfrm_ip2inner_mode(struct xfrm_state *x, int ipproto)
419 if ((ipproto == IPPROTO_IPIP && x->props.family == AF_INET) ||
420 (ipproto == IPPROTO_IPV6 && x->props.family == AF_INET6))
421 return x->inner_mode;
423 return x->inner_mode_iaf;
427 /* id in template is interpreted as:
428 * daddr - destination of tunnel, may be zero for transport mode.
429 * spi - zero to acquire spi. Not zero if spi is static, then
430 * daddr must be fixed too.
431 * proto - AH/ESP/IPCOMP
435 /* Source address of tunnel. Ignored, if it is not a tunnel. */
436 xfrm_address_t saddr;
438 unsigned short encap_family;
442 /* Mode: transport, tunnel etc. */
445 /* Sharing mode: unique, this session only, this user only etc. */
448 /* May skip this transfomration if no SA is found */
451 /* Skip aalgos/ealgos/calgos checks. */
454 /* Bit mask of algos allowed for acquisition */
460 #define XFRM_MAX_DEPTH 6
462 struct xfrm_policy_walk_entry {
463 struct list_head all;
467 struct xfrm_policy_walk {
468 struct xfrm_policy_walk_entry walk;
477 struct hlist_node bydst;
478 struct hlist_node byidx;
480 /* This lock only affects elements except for entry. */
483 struct timer_list timer;
485 struct flow_cache_object flo;
489 struct xfrm_mark mark;
490 struct xfrm_selector selector;
491 struct xfrm_lifetime_cfg lft;
492 struct xfrm_lifetime_cur curlft;
493 struct xfrm_policy_walk_entry walk;
499 struct xfrm_sec_ctx *security;
500 struct xfrm_tmpl xfrm_vec[XFRM_MAX_DEPTH];
503 static inline struct net *xp_net(struct xfrm_policy *xp)
505 return read_pnet(&xp->xp_net);
508 struct xfrm_kmaddress {
509 xfrm_address_t local;
510 xfrm_address_t remote;
515 struct xfrm_migrate {
516 xfrm_address_t old_daddr;
517 xfrm_address_t old_saddr;
518 xfrm_address_t new_daddr;
519 xfrm_address_t new_saddr;
528 #define XFRM_KM_TIMEOUT 30
530 #define XFRM_REPLAY_SEQ 1
531 #define XFRM_REPLAY_OSEQ 2
532 #define XFRM_REPLAY_SEQ_MASK 3
534 #define XFRM_REPLAY_UPDATE XFRM_AE_CR
535 #define XFRM_REPLAY_TIMEOUT XFRM_AE_CE
537 /* default aevent timeout in units of 100ms */
538 #define XFRM_AE_ETIME 10
539 /* Async Event timer multiplier */
540 #define XFRM_AE_ETH_M 10
541 /* default seq threshold size */
542 #define XFRM_AE_SEQT_SIZE 2
545 struct list_head list;
547 int (*notify)(struct xfrm_state *x, struct km_event *c);
548 int (*acquire)(struct xfrm_state *x, struct xfrm_tmpl *, struct xfrm_policy *xp, int dir);
549 struct xfrm_policy *(*compile_policy)(struct sock *sk, int opt, u8 *data, int len, int *dir);
550 int (*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
551 int (*notify_policy)(struct xfrm_policy *x, int dir, struct km_event *c);
552 int (*report)(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
553 int (*migrate)(struct xfrm_selector *sel, u8 dir, u8 type, struct xfrm_migrate *m, int num_bundles, struct xfrm_kmaddress *k);
556 extern int xfrm_register_km(struct xfrm_mgr *km);
557 extern int xfrm_unregister_km(struct xfrm_mgr *km);
560 * This structure is used for the duration where packets are being
561 * transformed by IPsec. As soon as the packet leaves IPsec the
562 * area beyond the generic IP part may be overwritten.
566 struct inet_skb_parm h4;
567 struct inet6_skb_parm h6;
570 /* Sequence number for replay protection. */
577 #define XFRM_SKB_CB(__skb) ((struct xfrm_skb_cb *)&((__skb)->cb[0]))
580 * This structure is used by the afinfo prepare_input/prepare_output functions
581 * to transmit header information to the mode input/output functions.
583 struct xfrm_mode_skb_cb {
585 struct inet_skb_parm h4;
586 struct inet6_skb_parm h6;
589 /* Copied from header for IPv4, always set to zero and DF for IPv6. */
593 /* IP header length (excluding options or extension headers). */
596 /* TOS for IPv4, class for IPv6. */
599 /* TTL for IPv4, hop limitfor IPv6. */
602 /* Protocol for IPv4, NH for IPv6. */
605 /* Option length for IPv4, zero for IPv6. */
608 /* Used by IPv6 only, zero for IPv4. */
612 #define XFRM_MODE_SKB_CB(__skb) ((struct xfrm_mode_skb_cb *)&((__skb)->cb[0]))
615 * This structure is used by the input processing to locate the SPI and
616 * related information.
618 struct xfrm_spi_skb_cb {
620 struct inet_skb_parm h4;
621 struct inet6_skb_parm h6;
624 unsigned int daddroff;
628 #define XFRM_SPI_SKB_CB(__skb) ((struct xfrm_spi_skb_cb *)&((__skb)->cb[0]))
630 /* Audit Information */
637 #ifdef CONFIG_AUDITSYSCALL
638 static inline struct audit_buffer *xfrm_audit_start(const char *op)
640 struct audit_buffer *audit_buf = NULL;
642 if (audit_enabled == 0)
644 audit_buf = audit_log_start(current->audit_context, GFP_ATOMIC,
645 AUDIT_MAC_IPSEC_EVENT);
646 if (audit_buf == NULL)
648 audit_log_format(audit_buf, "op=%s", op);
652 static inline void xfrm_audit_helper_usrinfo(uid_t auid, u32 ses, u32 secid,
653 struct audit_buffer *audit_buf)
658 audit_log_format(audit_buf, " auid=%u ses=%u", auid, ses);
660 security_secid_to_secctx(secid, &secctx, &secctx_len) == 0) {
661 audit_log_format(audit_buf, " subj=%s", secctx);
662 security_release_secctx(secctx, secctx_len);
664 audit_log_task_context(audit_buf);
667 extern void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
668 u32 auid, u32 ses, u32 secid);
669 extern void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
670 u32 auid, u32 ses, u32 secid);
671 extern void xfrm_audit_state_add(struct xfrm_state *x, int result,
672 u32 auid, u32 ses, u32 secid);
673 extern void xfrm_audit_state_delete(struct xfrm_state *x, int result,
674 u32 auid, u32 ses, u32 secid);
675 extern void xfrm_audit_state_replay_overflow(struct xfrm_state *x,
676 struct sk_buff *skb);
677 extern void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family);
678 extern void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family,
679 __be32 net_spi, __be32 net_seq);
680 extern void xfrm_audit_state_icvfail(struct xfrm_state *x,
681 struct sk_buff *skb, u8 proto);
684 static inline void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
685 u32 auid, u32 ses, u32 secid)
689 static inline void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
690 u32 auid, u32 ses, u32 secid)
694 static inline void xfrm_audit_state_add(struct xfrm_state *x, int result,
695 u32 auid, u32 ses, u32 secid)
699 static inline void xfrm_audit_state_delete(struct xfrm_state *x, int result,
700 u32 auid, u32 ses, u32 secid)
704 static inline void xfrm_audit_state_replay_overflow(struct xfrm_state *x,
709 static inline void xfrm_audit_state_notfound_simple(struct sk_buff *skb,
714 static inline void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family,
715 __be32 net_spi, __be32 net_seq)
719 static inline void xfrm_audit_state_icvfail(struct xfrm_state *x,
720 struct sk_buff *skb, u8 proto)
723 #endif /* CONFIG_AUDITSYSCALL */
725 static inline void xfrm_pol_hold(struct xfrm_policy *policy)
727 if (likely(policy != NULL))
728 atomic_inc(&policy->refcnt);
731 extern void xfrm_policy_destroy(struct xfrm_policy *policy);
733 static inline void xfrm_pol_put(struct xfrm_policy *policy)
735 if (atomic_dec_and_test(&policy->refcnt))
736 xfrm_policy_destroy(policy);
739 static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols)
742 for (i = npols - 1; i >= 0; --i)
743 xfrm_pol_put(pols[i]);
746 extern void __xfrm_state_destroy(struct xfrm_state *);
748 static inline void __xfrm_state_put(struct xfrm_state *x)
750 atomic_dec(&x->refcnt);
753 static inline void xfrm_state_put(struct xfrm_state *x)
755 if (atomic_dec_and_test(&x->refcnt))
756 __xfrm_state_destroy(x);
759 static inline void xfrm_state_hold(struct xfrm_state *x)
761 atomic_inc(&x->refcnt);
764 static __inline__ int addr_match(void *token1, void *token2, int prefixlen)
771 pdw = prefixlen >> 5; /* num of whole u32 in prefix */
772 pbi = prefixlen & 0x1f; /* num of bits in incomplete u32 in prefix */
775 if (memcmp(a1, a2, pdw << 2))
781 mask = htonl((0xffffffff) << (32 - pbi));
783 if ((a1[pdw] ^ a2[pdw]) & mask)
791 __be16 xfrm_flowi_sport(struct flowi *fl)
797 case IPPROTO_UDPLITE:
799 port = fl->fl_ip_sport;
803 port = htons(fl->fl_icmp_type);
806 port = htons(fl->fl_mh_type);
809 port = htonl(fl->fl_gre_key) >> 16;
818 __be16 xfrm_flowi_dport(struct flowi *fl)
824 case IPPROTO_UDPLITE:
826 port = fl->fl_ip_dport;
830 port = htons(fl->fl_icmp_code);
833 port = htonl(fl->fl_gre_key) & 0xffff;
841 extern int xfrm_selector_match(struct xfrm_selector *sel, struct flowi *fl,
842 unsigned short family);
844 #ifdef CONFIG_SECURITY_NETWORK_XFRM
845 /* If neither has a context --> match
846 * Otherwise, both must have a context and the sids, doi, alg must match
848 static inline int xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2)
850 return ((!s1 && !s2) ||
852 (s1->ctx_sid == s2->ctx_sid) &&
853 (s1->ctx_doi == s2->ctx_doi) &&
854 (s1->ctx_alg == s2->ctx_alg)));
857 static inline int xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2)
863 /* A struct encoding bundle of transformations to apply to some set of flow.
865 * dst->child points to the next element of bundle.
866 * dst->xfrm points to an instanse of transformer.
868 * Due to unfortunate limitations of current routing cache, which we
869 * have no time to fix, it mirrors struct rtable and bound to the same
870 * routing key, including saddr,daddr. However, we can have many of
871 * bundles differing by session id. All the bundles grow from a parent
876 struct dst_entry dst;
880 struct dst_entry *route;
881 struct flow_cache_object flo;
882 struct xfrm_policy *pols[XFRM_POLICY_TYPE_MAX];
883 int num_pols, num_xfrms;
884 #ifdef CONFIG_XFRM_SUB_POLICY
885 struct flowi *origin;
886 struct xfrm_selector *partner;
890 u32 route_mtu_cached;
891 u32 child_mtu_cached;
897 static inline void xfrm_dst_destroy(struct xfrm_dst *xdst)
899 xfrm_pols_put(xdst->pols, xdst->num_pols);
900 dst_release(xdst->route);
901 if (likely(xdst->u.dst.xfrm))
902 xfrm_state_put(xdst->u.dst.xfrm);
903 #ifdef CONFIG_XFRM_SUB_POLICY
906 kfree(xdst->partner);
907 xdst->partner = NULL;
912 extern void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev);
917 struct xfrm_state *xvec[XFRM_MAX_DEPTH];
920 static inline struct sec_path *
921 secpath_get(struct sec_path *sp)
924 atomic_inc(&sp->refcnt);
928 extern void __secpath_destroy(struct sec_path *sp);
931 secpath_put(struct sec_path *sp)
933 if (sp && atomic_dec_and_test(&sp->refcnt))
934 __secpath_destroy(sp);
937 extern struct sec_path *secpath_dup(struct sec_path *src);
940 secpath_reset(struct sk_buff *skb)
943 secpath_put(skb->sp);
949 xfrm_addr_any(xfrm_address_t *addr, unsigned short family)
953 return addr->a4 == 0;
955 return ipv6_addr_any((struct in6_addr *)&addr->a6);
961 __xfrm4_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x)
963 return (tmpl->saddr.a4 &&
964 tmpl->saddr.a4 != x->props.saddr.a4);
968 __xfrm6_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x)
970 return (!ipv6_addr_any((struct in6_addr*)&tmpl->saddr) &&
971 ipv6_addr_cmp((struct in6_addr *)&tmpl->saddr, (struct in6_addr*)&x->props.saddr));
975 xfrm_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x, unsigned short family)
979 return __xfrm4_state_addr_cmp(tmpl, x);
981 return __xfrm6_state_addr_cmp(tmpl, x);
987 extern int __xfrm_policy_check(struct sock *, int dir, struct sk_buff *skb, unsigned short family);
989 static inline int __xfrm_policy_check2(struct sock *sk, int dir,
991 unsigned int family, int reverse)
993 struct net *net = dev_net(skb->dev);
994 int ndir = dir | (reverse ? XFRM_POLICY_MASK + 1 : 0);
996 if (sk && sk->sk_policy[XFRM_POLICY_IN])
997 return __xfrm_policy_check(sk, ndir, skb, family);
999 return (!net->xfrm.policy_count[dir] && !skb->sp) ||
1000 (skb_dst(skb)->flags & DST_NOPOLICY) ||
1001 __xfrm_policy_check(sk, ndir, skb, family);
1004 static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family)
1006 return __xfrm_policy_check2(sk, dir, skb, family, 0);
1009 static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1011 return xfrm_policy_check(sk, dir, skb, AF_INET);
1014 static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1016 return xfrm_policy_check(sk, dir, skb, AF_INET6);
1019 static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir,
1020 struct sk_buff *skb)
1022 return __xfrm_policy_check2(sk, dir, skb, AF_INET, 1);
1025 static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
1026 struct sk_buff *skb)
1028 return __xfrm_policy_check2(sk, dir, skb, AF_INET6, 1);
1031 extern int __xfrm_decode_session(struct sk_buff *skb, struct flowi *fl,
1032 unsigned int family, int reverse);
1034 static inline int xfrm_decode_session(struct sk_buff *skb, struct flowi *fl,
1035 unsigned int family)
1037 return __xfrm_decode_session(skb, fl, family, 0);
1040 static inline int xfrm_decode_session_reverse(struct sk_buff *skb,
1042 unsigned int family)
1044 return __xfrm_decode_session(skb, fl, family, 1);
1047 extern int __xfrm_route_forward(struct sk_buff *skb, unsigned short family);
1049 static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family)
1051 struct net *net = dev_net(skb->dev);
1053 return !net->xfrm.policy_count[XFRM_POLICY_OUT] ||
1054 (skb_dst(skb)->flags & DST_NOXFRM) ||
1055 __xfrm_route_forward(skb, family);
1058 static inline int xfrm4_route_forward(struct sk_buff *skb)
1060 return xfrm_route_forward(skb, AF_INET);
1063 static inline int xfrm6_route_forward(struct sk_buff *skb)
1065 return xfrm_route_forward(skb, AF_INET6);
1068 extern int __xfrm_sk_clone_policy(struct sock *sk);
1070 static inline int xfrm_sk_clone_policy(struct sock *sk)
1072 if (unlikely(sk->sk_policy[0] || sk->sk_policy[1]))
1073 return __xfrm_sk_clone_policy(sk);
1077 extern int xfrm_policy_delete(struct xfrm_policy *pol, int dir);
1079 static inline void xfrm_sk_free_policy(struct sock *sk)
1081 if (unlikely(sk->sk_policy[0] != NULL)) {
1082 xfrm_policy_delete(sk->sk_policy[0], XFRM_POLICY_MAX);
1083 sk->sk_policy[0] = NULL;
1085 if (unlikely(sk->sk_policy[1] != NULL)) {
1086 xfrm_policy_delete(sk->sk_policy[1], XFRM_POLICY_MAX+1);
1087 sk->sk_policy[1] = NULL;
1093 static inline void xfrm_sk_free_policy(struct sock *sk) {}
1094 static inline int xfrm_sk_clone_policy(struct sock *sk) { return 0; }
1095 static inline int xfrm6_route_forward(struct sk_buff *skb) { return 1; }
1096 static inline int xfrm4_route_forward(struct sk_buff *skb) { return 1; }
1097 static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1101 static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1105 static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family)
1109 static inline int xfrm_decode_session_reverse(struct sk_buff *skb,
1111 unsigned int family)
1115 static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir,
1116 struct sk_buff *skb)
1120 static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
1121 struct sk_buff *skb)
1128 xfrm_address_t *xfrm_flowi_daddr(struct flowi *fl, unsigned short family)
1132 return (xfrm_address_t *)&fl->fl4_dst;
1134 return (xfrm_address_t *)&fl->fl6_dst;
1140 xfrm_address_t *xfrm_flowi_saddr(struct flowi *fl, unsigned short family)
1144 return (xfrm_address_t *)&fl->fl4_src;
1146 return (xfrm_address_t *)&fl->fl6_src;
1152 void xfrm_flowi_addr_get(struct flowi *fl,
1153 xfrm_address_t *saddr, xfrm_address_t *daddr,
1154 unsigned short family)
1158 memcpy(&saddr->a4, &fl->fl4_src, sizeof(saddr->a4));
1159 memcpy(&daddr->a4, &fl->fl4_dst, sizeof(daddr->a4));
1162 ipv6_addr_copy((struct in6_addr *)&saddr->a6, &fl->fl6_src);
1163 ipv6_addr_copy((struct in6_addr *)&daddr->a6, &fl->fl6_dst);
1168 static __inline__ int
1169 __xfrm4_state_addr_check(struct xfrm_state *x,
1170 xfrm_address_t *daddr, xfrm_address_t *saddr)
1172 if (daddr->a4 == x->id.daddr.a4 &&
1173 (saddr->a4 == x->props.saddr.a4 || !saddr->a4 || !x->props.saddr.a4))
1178 static __inline__ int
1179 __xfrm6_state_addr_check(struct xfrm_state *x,
1180 xfrm_address_t *daddr, xfrm_address_t *saddr)
1182 if (!ipv6_addr_cmp((struct in6_addr *)daddr, (struct in6_addr *)&x->id.daddr) &&
1183 (!ipv6_addr_cmp((struct in6_addr *)saddr, (struct in6_addr *)&x->props.saddr)||
1184 ipv6_addr_any((struct in6_addr *)saddr) ||
1185 ipv6_addr_any((struct in6_addr *)&x->props.saddr)))
1190 static __inline__ int
1191 xfrm_state_addr_check(struct xfrm_state *x,
1192 xfrm_address_t *daddr, xfrm_address_t *saddr,
1193 unsigned short family)
1197 return __xfrm4_state_addr_check(x, daddr, saddr);
1199 return __xfrm6_state_addr_check(x, daddr, saddr);
1204 static __inline__ int
1205 xfrm_state_addr_flow_check(struct xfrm_state *x, struct flowi *fl,
1206 unsigned short family)
1210 return __xfrm4_state_addr_check(x,
1211 (xfrm_address_t *)&fl->fl4_dst,
1212 (xfrm_address_t *)&fl->fl4_src);
1214 return __xfrm6_state_addr_check(x,
1215 (xfrm_address_t *)&fl->fl6_dst,
1216 (xfrm_address_t *)&fl->fl6_src);
1221 static inline int xfrm_state_kern(struct xfrm_state *x)
1223 return atomic_read(&x->tunnel_users);
1226 static inline int xfrm_id_proto_match(u8 proto, u8 userproto)
1228 return (!userproto || proto == userproto ||
1229 (userproto == IPSEC_PROTO_ANY && (proto == IPPROTO_AH ||
1230 proto == IPPROTO_ESP ||
1231 proto == IPPROTO_COMP)));
1235 * xfrm algorithm information
1237 struct xfrm_algo_aead_info {
1241 struct xfrm_algo_auth_info {
1246 struct xfrm_algo_encr_info {
1251 struct xfrm_algo_comp_info {
1255 struct xfrm_algo_desc {
1260 struct xfrm_algo_aead_info aead;
1261 struct xfrm_algo_auth_info auth;
1262 struct xfrm_algo_encr_info encr;
1263 struct xfrm_algo_comp_info comp;
1265 struct sadb_alg desc;
1268 /* XFRM tunnel handlers. */
1269 struct xfrm_tunnel {
1270 int (*handler)(struct sk_buff *skb);
1271 int (*err_handler)(struct sk_buff *skb, u32 info);
1273 struct xfrm_tunnel __rcu *next;
1277 struct xfrm6_tunnel {
1278 int (*handler)(struct sk_buff *skb);
1279 int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt,
1280 u8 type, u8 code, int offset, __be32 info);
1281 struct xfrm6_tunnel __rcu *next;
1285 extern void xfrm_init(void);
1286 extern void xfrm4_init(int rt_hash_size);
1287 extern int xfrm_state_init(struct net *net);
1288 extern void xfrm_state_fini(struct net *net);
1289 extern void xfrm4_state_init(void);
1291 extern int xfrm6_init(void);
1292 extern void xfrm6_fini(void);
1293 extern int xfrm6_state_init(void);
1294 extern void xfrm6_state_fini(void);
1296 static inline int xfrm6_init(void)
1300 static inline void xfrm6_fini(void)
1306 #ifdef CONFIG_XFRM_STATISTICS
1307 extern int xfrm_proc_init(struct net *net);
1308 extern void xfrm_proc_fini(struct net *net);
1311 extern int xfrm_sysctl_init(struct net *net);
1312 #ifdef CONFIG_SYSCTL
1313 extern void xfrm_sysctl_fini(struct net *net);
1315 static inline void xfrm_sysctl_fini(struct net *net)
1320 extern void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto);
1321 extern int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk,
1322 int (*func)(struct xfrm_state *, int, void*), void *);
1323 extern void xfrm_state_walk_done(struct xfrm_state_walk *walk);
1324 extern struct xfrm_state *xfrm_state_alloc(struct net *net);
1325 extern struct xfrm_state *xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
1326 struct flowi *fl, struct xfrm_tmpl *tmpl,
1327 struct xfrm_policy *pol, int *err,
1328 unsigned short family);
1329 extern struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark,
1330 xfrm_address_t *daddr,
1331 xfrm_address_t *saddr,
1332 unsigned short family,
1333 u8 mode, u8 proto, u32 reqid);
1334 extern int xfrm_state_check_expire(struct xfrm_state *x);
1335 extern void xfrm_state_insert(struct xfrm_state *x);
1336 extern int xfrm_state_add(struct xfrm_state *x);
1337 extern int xfrm_state_update(struct xfrm_state *x);
1338 extern struct xfrm_state *xfrm_state_lookup(struct net *net, u32 mark,
1339 xfrm_address_t *daddr, __be32 spi,
1340 u8 proto, unsigned short family);
1341 extern struct xfrm_state *xfrm_state_lookup_byaddr(struct net *net, u32 mark,
1342 xfrm_address_t *daddr,
1343 xfrm_address_t *saddr,
1345 unsigned short family);
1346 #ifdef CONFIG_XFRM_SUB_POLICY
1347 extern int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src,
1348 int n, unsigned short family);
1349 extern int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src,
1350 int n, unsigned short family);
1352 static inline int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src,
1353 int n, unsigned short family)
1358 static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src,
1359 int n, unsigned short family)
1365 struct xfrmk_sadinfo {
1366 u32 sadhcnt; /* current hash bkts */
1367 u32 sadhmcnt; /* max allowed hash bkts */
1368 u32 sadcnt; /* current running count */
1371 struct xfrmk_spdinfo {
1382 extern struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark,
1384 extern int xfrm_state_delete(struct xfrm_state *x);
1385 extern int xfrm_state_flush(struct net *net, u8 proto, struct xfrm_audit *audit_info);
1386 extern void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si);
1387 extern void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si);
1388 extern int xfrm_replay_check(struct xfrm_state *x,
1389 struct sk_buff *skb, __be32 seq);
1390 extern void xfrm_replay_advance(struct xfrm_state *x, __be32 seq);
1391 extern void xfrm_replay_notify(struct xfrm_state *x, int event);
1392 extern int xfrm_state_mtu(struct xfrm_state *x, int mtu);
1393 extern int xfrm_init_state(struct xfrm_state *x);
1394 extern int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb);
1395 extern int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi,
1397 extern int xfrm_input_resume(struct sk_buff *skb, int nexthdr);
1398 extern int xfrm_output_resume(struct sk_buff *skb, int err);
1399 extern int xfrm_output(struct sk_buff *skb);
1400 extern int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb);
1401 extern int xfrm4_extract_header(struct sk_buff *skb);
1402 extern int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb);
1403 extern int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi,
1405 extern int xfrm4_transport_finish(struct sk_buff *skb, int async);
1406 extern int xfrm4_rcv(struct sk_buff *skb);
1408 static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
1410 return xfrm4_rcv_encap(skb, nexthdr, spi, 0);
1413 extern int xfrm4_extract_output(struct xfrm_state *x, struct sk_buff *skb);
1414 extern int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb);
1415 extern int xfrm4_output(struct sk_buff *skb);
1416 extern int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family);
1417 extern int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family);
1418 extern int xfrm6_extract_header(struct sk_buff *skb);
1419 extern int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb);
1420 extern int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi);
1421 extern int xfrm6_transport_finish(struct sk_buff *skb, int async);
1422 extern int xfrm6_rcv(struct sk_buff *skb);
1423 extern int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
1424 xfrm_address_t *saddr, u8 proto);
1425 extern int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family);
1426 extern int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family);
1427 extern __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr);
1428 extern __be32 xfrm6_tunnel_spi_lookup(struct net *net, xfrm_address_t *saddr);
1429 extern int xfrm6_extract_output(struct xfrm_state *x, struct sk_buff *skb);
1430 extern int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb);
1431 extern int xfrm6_output(struct sk_buff *skb);
1432 extern int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
1436 extern int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb);
1437 extern int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen);
1439 static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen)
1441 return -ENOPROTOOPT;
1444 static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb)
1446 /* should not happen */
1452 struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp);
1454 extern void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type);
1455 extern int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk,
1456 int (*func)(struct xfrm_policy *, int, int, void*), void *);
1457 extern void xfrm_policy_walk_done(struct xfrm_policy_walk *walk);
1458 int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);
1459 struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark,
1461 struct xfrm_selector *sel,
1462 struct xfrm_sec_ctx *ctx, int delete,
1464 struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u8, int dir, u32 id, int delete, int *err);
1465 int xfrm_policy_flush(struct net *net, u8 type, struct xfrm_audit *audit_info);
1466 u32 xfrm_get_acqseq(void);
1467 extern int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi);
1468 struct xfrm_state *xfrm_find_acq(struct net *net, struct xfrm_mark *mark,
1469 u8 mode, u32 reqid, u8 proto,
1470 xfrm_address_t *daddr,
1471 xfrm_address_t *saddr, int create,
1472 unsigned short family);
1473 extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol);
1475 #ifdef CONFIG_XFRM_MIGRATE
1476 extern int km_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
1477 struct xfrm_migrate *m, int num_bundles,
1478 struct xfrm_kmaddress *k);
1479 extern struct xfrm_state * xfrm_migrate_state_find(struct xfrm_migrate *m);
1480 extern struct xfrm_state * xfrm_state_migrate(struct xfrm_state *x,
1481 struct xfrm_migrate *m);
1482 extern int xfrm_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
1483 struct xfrm_migrate *m, int num_bundles,
1484 struct xfrm_kmaddress *k);
1487 extern int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
1488 extern void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 pid);
1489 extern int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
1491 extern void xfrm_input_init(void);
1492 extern int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq);
1494 extern void xfrm_probe_algs(void);
1495 extern int xfrm_count_auth_supported(void);
1496 extern int xfrm_count_enc_supported(void);
1497 extern struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx);
1498 extern struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx);
1499 extern struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id);
1500 extern struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id);
1501 extern struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id);
1502 extern struct xfrm_algo_desc *xfrm_aalg_get_byname(char *name, int probe);
1503 extern struct xfrm_algo_desc *xfrm_ealg_get_byname(char *name, int probe);
1504 extern struct xfrm_algo_desc *xfrm_calg_get_byname(char *name, int probe);
1505 extern struct xfrm_algo_desc *xfrm_aead_get_byname(char *name, int icv_len,
1510 typedef int (icv_update_fn_t)(struct hash_desc *, struct scatterlist *,
1513 static inline int xfrm_addr_cmp(xfrm_address_t *a, xfrm_address_t *b,
1519 return (__force u32)a->a4 - (__force u32)b->a4;
1521 return ipv6_addr_cmp((struct in6_addr *)a,
1522 (struct in6_addr *)b);
1526 static inline int xfrm_policy_id2dir(u32 index)
1532 static inline int xfrm_aevent_is_on(struct net *net)
1538 nlsk = rcu_dereference(net->xfrm.nlsk);
1540 ret = netlink_has_listeners(nlsk, XFRMNLGRP_AEVENTS);
1546 static inline int xfrm_alg_len(struct xfrm_algo *alg)
1548 return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
1551 static inline int xfrm_alg_auth_len(struct xfrm_algo_auth *alg)
1553 return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
1556 #ifdef CONFIG_XFRM_MIGRATE
1557 static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig)
1559 return kmemdup(orig, xfrm_alg_len(orig), GFP_KERNEL);
1562 static inline struct xfrm_algo_auth *xfrm_algo_auth_clone(struct xfrm_algo_auth *orig)
1564 return kmemdup(orig, xfrm_alg_auth_len(orig), GFP_KERNEL);
1567 static inline void xfrm_states_put(struct xfrm_state **states, int n)
1570 for (i = 0; i < n; i++)
1571 xfrm_state_put(*(states + i));
1574 static inline void xfrm_states_delete(struct xfrm_state **states, int n)
1577 for (i = 0; i < n; i++)
1578 xfrm_state_delete(*(states + i));
1583 static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb)
1585 return skb->sp->xvec[skb->sp->len - 1];
1589 static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m)
1591 if (attrs[XFRMA_MARK])
1592 memcpy(m, nla_data(attrs[XFRMA_MARK]), sizeof(struct xfrm_mark));
1599 static inline int xfrm_mark_put(struct sk_buff *skb, struct xfrm_mark *m)
1602 NLA_PUT(skb, XFRMA_MARK, sizeof(struct xfrm_mark), m);
1609 #endif /* _NET_XFRM_H */