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>
19 #include <net/route.h>
21 #include <net/ip6_fib.h>
24 #include <linux/interrupt.h>
26 #ifdef CONFIG_XFRM_STATISTICS
30 #define XFRM_PROTO_ESP 50
31 #define XFRM_PROTO_AH 51
32 #define XFRM_PROTO_COMP 108
33 #define XFRM_PROTO_IPIP 4
34 #define XFRM_PROTO_IPV6 41
35 #define XFRM_PROTO_ROUTING IPPROTO_ROUTING
36 #define XFRM_PROTO_DSTOPTS IPPROTO_DSTOPTS
38 #define XFRM_ALIGN8(len) (((len) + 7) & ~7)
39 #define MODULE_ALIAS_XFRM_MODE(family, encap) \
40 MODULE_ALIAS("xfrm-mode-" __stringify(family) "-" __stringify(encap))
41 #define MODULE_ALIAS_XFRM_TYPE(family, proto) \
42 MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto))
44 #ifdef CONFIG_XFRM_STATISTICS
45 #define XFRM_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.xfrm_statistics, field)
46 #define XFRM_INC_STATS_BH(net, field) SNMP_INC_STATS_BH((net)->mib.xfrm_statistics, field)
47 #define XFRM_INC_STATS_USER(net, field) SNMP_INC_STATS_USER((net)-mib.xfrm_statistics, field)
49 #define XFRM_INC_STATS(net, field) ((void)(net))
50 #define XFRM_INC_STATS_BH(net, field) ((void)(net))
51 #define XFRM_INC_STATS_USER(net, field) ((void)(net))
54 extern struct mutex xfrm_cfg_mutex;
56 /* Organization of SPD aka "XFRM rules"
57 ------------------------------------
60 - policy rule, struct xfrm_policy (=SPD entry)
61 - bundle of transformations, struct dst_entry == struct xfrm_dst (=SA bundle)
62 - instance of a transformer, struct xfrm_state (=SA)
63 - template to clone xfrm_state, struct xfrm_tmpl
65 SPD is plain linear list of xfrm_policy rules, ordered by priority.
66 (To be compatible with existing pfkeyv2 implementations,
67 many rules with priority of 0x7fffffff are allowed to exist and
68 such rules are ordered in an unpredictable way, thanks to bsd folks.)
70 Lookup is plain linear search until the first match with selector.
72 If "action" is "block", then we prohibit the flow, otherwise:
73 if "xfrms_nr" is zero, the flow passes untransformed. Otherwise,
74 policy entry has list of up to XFRM_MAX_DEPTH transformations,
75 described by templates xfrm_tmpl. Each template is resolved
76 to a complete xfrm_state (see below) and we pack bundle of transformations
77 to a dst_entry returned to requestor.
79 dst -. xfrm .-> xfrm_state #1
80 |---. child .-> dst -. xfrm .-> xfrm_state #2
81 |---. child .-> dst -. xfrm .-> xfrm_state #3
84 Bundles are cached at xrfm_policy struct (field ->bundles).
87 Resolution of xrfm_tmpl
88 -----------------------
90 1. ->mode Mode: transport or tunnel
91 2. ->id.proto Protocol: AH/ESP/IPCOMP
92 3. ->id.daddr Remote tunnel endpoint, ignored for transport mode.
93 Q: allow to resolve security gateway?
94 4. ->id.spi If not zero, static SPI.
95 5. ->saddr Local tunnel endpoint, ignored for transport mode.
96 6. ->algos List of allowed algos. Plain bitmask now.
97 Q: ealgos, aalgos, calgos. What a mess...
98 7. ->share Sharing mode.
99 Q: how to implement private sharing mode? To add struct sock* to
102 Having this template we search through SAD searching for entries
103 with appropriate mode/proto/algo, permitted by selector.
104 If no appropriate entry found, it is requested from key manager.
107 Q: How to find all the bundles referring to a physical path for
108 PMTU discovery? Seems, dst should contain list of all parents...
109 and enter to infinite locking hierarchy disaster.
110 No! It is easier, we will not search for them, let them find us.
111 We add genid to each dst plus pointer to genid of raw IP route,
112 pmtu disc will update pmtu on raw IP route and increase its genid.
113 dst_check() will see this for top level and trigger resyncing
114 metrics. Plus, it will be made via sk->sk_dst_cache. Solved.
117 struct xfrm_state_walk {
118 struct list_head all;
127 /* Full description of state of transformer. */
133 struct hlist_node gclist;
134 struct hlist_node bydst;
136 struct hlist_node bysrc;
137 struct hlist_node byspi;
143 struct xfrm_selector sel;
144 struct xfrm_mark mark;
148 /* Key manager bits */
149 struct xfrm_state_walk km;
151 /* Parameters of this state. */
156 u8 aalgo, ealgo, calgo;
159 xfrm_address_t saddr;
164 struct xfrm_lifetime_cfg lft;
166 /* Data for transformer */
167 struct xfrm_algo_auth *aalg;
168 struct xfrm_algo *ealg;
169 struct xfrm_algo *calg;
170 struct xfrm_algo_aead *aead;
172 /* Data for encapsulator */
173 struct xfrm_encap_tmpl *encap;
175 /* Data for care-of address */
176 xfrm_address_t *coaddr;
178 /* IPComp needs an IPIP tunnel for handling uncompressed packets */
179 struct xfrm_state *tunnel;
181 /* If a tunnel, number of users + 1 */
182 atomic_t tunnel_users;
184 /* State for replay detection */
185 struct xfrm_replay_state replay;
187 /* Replay detection state at the time we sent the last notification */
188 struct xfrm_replay_state preplay;
190 /* internal flag that only holds state for delayed aevent at the
195 /* Replay detection notification settings */
199 /* Replay detection notification timer */
200 struct timer_list rtimer;
203 struct xfrm_stats stats;
205 struct xfrm_lifetime_cur curlft;
206 struct tasklet_hrtimer mtimer;
209 unsigned long lastused;
211 /* Reference to data common to all the instances of this
213 const struct xfrm_type *type;
214 struct xfrm_mode *inner_mode;
215 struct xfrm_mode *inner_mode_iaf;
216 struct xfrm_mode *outer_mode;
218 /* Security context */
219 struct xfrm_sec_ctx *security;
221 /* Private data of this transformer, format is opaque,
222 * interpreted by xfrm_type methods. */
226 static inline struct net *xs_net(struct xfrm_state *x)
228 return read_pnet(&x->xs_net);
231 /* xflags - make enum if more show up */
232 #define XFRM_TIME_DEFER 1
243 /* callback structure passed from either netlink or pfkey */
262 struct xfrm_policy_afinfo {
263 unsigned short family;
264 struct dst_ops *dst_ops;
265 void (*garbage_collect)(struct net *net);
266 struct dst_entry *(*dst_lookup)(struct net *net, int tos,
267 xfrm_address_t *saddr,
268 xfrm_address_t *daddr);
269 int (*get_saddr)(struct net *net, xfrm_address_t *saddr, xfrm_address_t *daddr);
270 struct dst_entry *(*find_bundle)(struct flowi *fl, struct xfrm_policy *policy);
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_state *x, struct flowi *fl,
302 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;
488 struct xfrm_mark mark;
489 struct xfrm_selector selector;
490 struct xfrm_lifetime_cfg lft;
491 struct xfrm_lifetime_cur curlft;
492 struct dst_entry *bundles;
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 #ifdef CONFIG_XFRM_SUB_POLICY
740 static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols)
743 for (i = npols - 1; i >= 0; --i)
744 xfrm_pol_put(pols[i]);
747 static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols)
749 xfrm_pol_put(pols[0]);
753 extern void __xfrm_state_destroy(struct xfrm_state *);
755 static inline void __xfrm_state_put(struct xfrm_state *x)
757 atomic_dec(&x->refcnt);
760 static inline void xfrm_state_put(struct xfrm_state *x)
762 if (atomic_dec_and_test(&x->refcnt))
763 __xfrm_state_destroy(x);
766 static inline void xfrm_state_hold(struct xfrm_state *x)
768 atomic_inc(&x->refcnt);
771 static __inline__ int addr_match(void *token1, void *token2, int prefixlen)
778 pdw = prefixlen >> 5; /* num of whole u32 in prefix */
779 pbi = prefixlen & 0x1f; /* num of bits in incomplete u32 in prefix */
782 if (memcmp(a1, a2, pdw << 2))
788 mask = htonl((0xffffffff) << (32 - pbi));
790 if ((a1[pdw] ^ a2[pdw]) & mask)
798 __be16 xfrm_flowi_sport(struct flowi *fl)
804 case IPPROTO_UDPLITE:
806 port = fl->fl_ip_sport;
810 port = htons(fl->fl_icmp_type);
813 port = htons(fl->fl_mh_type);
822 __be16 xfrm_flowi_dport(struct flowi *fl)
828 case IPPROTO_UDPLITE:
830 port = fl->fl_ip_dport;
834 port = htons(fl->fl_icmp_code);
842 extern int xfrm_selector_match(struct xfrm_selector *sel, struct flowi *fl,
843 unsigned short family);
845 #ifdef CONFIG_SECURITY_NETWORK_XFRM
846 /* If neither has a context --> match
847 * Otherwise, both must have a context and the sids, doi, alg must match
849 static inline int xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2)
851 return ((!s1 && !s2) ||
853 (s1->ctx_sid == s2->ctx_sid) &&
854 (s1->ctx_doi == s2->ctx_doi) &&
855 (s1->ctx_alg == s2->ctx_alg)));
858 static inline int xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2)
864 /* A struct encoding bundle of transformations to apply to some set of flow.
866 * dst->child points to the next element of bundle.
867 * dst->xfrm points to an instanse of transformer.
869 * Due to unfortunate limitations of current routing cache, which we
870 * have no time to fix, it mirrors struct rtable and bound to the same
871 * routing key, including saddr,daddr. However, we can have many of
872 * bundles differing by session id. All the bundles grow from a parent
877 struct dst_entry dst;
881 struct dst_entry *route;
882 #ifdef CONFIG_XFRM_SUB_POLICY
883 struct flowi *origin;
884 struct xfrm_selector *partner;
887 u32 route_mtu_cached;
888 u32 child_mtu_cached;
894 static inline void xfrm_dst_destroy(struct xfrm_dst *xdst)
896 dst_release(xdst->route);
897 if (likely(xdst->u.dst.xfrm))
898 xfrm_state_put(xdst->u.dst.xfrm);
899 #ifdef CONFIG_XFRM_SUB_POLICY
902 kfree(xdst->partner);
903 xdst->partner = NULL;
908 extern void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev);
913 struct xfrm_state *xvec[XFRM_MAX_DEPTH];
916 static inline struct sec_path *
917 secpath_get(struct sec_path *sp)
920 atomic_inc(&sp->refcnt);
924 extern void __secpath_destroy(struct sec_path *sp);
927 secpath_put(struct sec_path *sp)
929 if (sp && atomic_dec_and_test(&sp->refcnt))
930 __secpath_destroy(sp);
933 extern struct sec_path *secpath_dup(struct sec_path *src);
936 secpath_reset(struct sk_buff *skb)
939 secpath_put(skb->sp);
945 xfrm_addr_any(xfrm_address_t *addr, unsigned short family)
949 return addr->a4 == 0;
951 return ipv6_addr_any((struct in6_addr *)&addr->a6);
957 __xfrm4_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x)
959 return (tmpl->saddr.a4 &&
960 tmpl->saddr.a4 != x->props.saddr.a4);
964 __xfrm6_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x)
966 return (!ipv6_addr_any((struct in6_addr*)&tmpl->saddr) &&
967 ipv6_addr_cmp((struct in6_addr *)&tmpl->saddr, (struct in6_addr*)&x->props.saddr));
971 xfrm_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x, unsigned short family)
975 return __xfrm4_state_addr_cmp(tmpl, x);
977 return __xfrm6_state_addr_cmp(tmpl, x);
983 extern int __xfrm_policy_check(struct sock *, int dir, struct sk_buff *skb, unsigned short family);
985 static inline int __xfrm_policy_check2(struct sock *sk, int dir,
987 unsigned int family, int reverse)
989 struct net *net = dev_net(skb->dev);
990 int ndir = dir | (reverse ? XFRM_POLICY_MASK + 1 : 0);
992 if (sk && sk->sk_policy[XFRM_POLICY_IN])
993 return __xfrm_policy_check(sk, ndir, skb, family);
995 return (!net->xfrm.policy_count[dir] && !skb->sp) ||
996 (skb_dst(skb)->flags & DST_NOPOLICY) ||
997 __xfrm_policy_check(sk, ndir, skb, family);
1000 static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family)
1002 return __xfrm_policy_check2(sk, dir, skb, family, 0);
1005 static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1007 return xfrm_policy_check(sk, dir, skb, AF_INET);
1010 static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1012 return xfrm_policy_check(sk, dir, skb, AF_INET6);
1015 static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir,
1016 struct sk_buff *skb)
1018 return __xfrm_policy_check2(sk, dir, skb, AF_INET, 1);
1021 static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
1022 struct sk_buff *skb)
1024 return __xfrm_policy_check2(sk, dir, skb, AF_INET6, 1);
1027 extern int __xfrm_decode_session(struct sk_buff *skb, struct flowi *fl,
1028 unsigned int family, int reverse);
1030 static inline int xfrm_decode_session(struct sk_buff *skb, struct flowi *fl,
1031 unsigned int family)
1033 return __xfrm_decode_session(skb, fl, family, 0);
1036 static inline int xfrm_decode_session_reverse(struct sk_buff *skb,
1038 unsigned int family)
1040 return __xfrm_decode_session(skb, fl, family, 1);
1043 extern int __xfrm_route_forward(struct sk_buff *skb, unsigned short family);
1045 static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family)
1047 struct net *net = dev_net(skb->dev);
1049 return !net->xfrm.policy_count[XFRM_POLICY_OUT] ||
1050 (skb_dst(skb)->flags & DST_NOXFRM) ||
1051 __xfrm_route_forward(skb, family);
1054 static inline int xfrm4_route_forward(struct sk_buff *skb)
1056 return xfrm_route_forward(skb, AF_INET);
1059 static inline int xfrm6_route_forward(struct sk_buff *skb)
1061 return xfrm_route_forward(skb, AF_INET6);
1064 extern int __xfrm_sk_clone_policy(struct sock *sk);
1066 static inline int xfrm_sk_clone_policy(struct sock *sk)
1068 if (unlikely(sk->sk_policy[0] || sk->sk_policy[1]))
1069 return __xfrm_sk_clone_policy(sk);
1073 extern int xfrm_policy_delete(struct xfrm_policy *pol, int dir);
1075 static inline void xfrm_sk_free_policy(struct sock *sk)
1077 if (unlikely(sk->sk_policy[0] != NULL)) {
1078 xfrm_policy_delete(sk->sk_policy[0], XFRM_POLICY_MAX);
1079 sk->sk_policy[0] = NULL;
1081 if (unlikely(sk->sk_policy[1] != NULL)) {
1082 xfrm_policy_delete(sk->sk_policy[1], XFRM_POLICY_MAX+1);
1083 sk->sk_policy[1] = NULL;
1089 static inline void xfrm_sk_free_policy(struct sock *sk) {}
1090 static inline int xfrm_sk_clone_policy(struct sock *sk) { return 0; }
1091 static inline int xfrm6_route_forward(struct sk_buff *skb) { return 1; }
1092 static inline int xfrm4_route_forward(struct sk_buff *skb) { return 1; }
1093 static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1097 static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1101 static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family)
1105 static inline int xfrm_decode_session_reverse(struct sk_buff *skb,
1107 unsigned int family)
1111 static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir,
1112 struct sk_buff *skb)
1116 static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
1117 struct sk_buff *skb)
1124 xfrm_address_t *xfrm_flowi_daddr(struct flowi *fl, unsigned short family)
1128 return (xfrm_address_t *)&fl->fl4_dst;
1130 return (xfrm_address_t *)&fl->fl6_dst;
1136 xfrm_address_t *xfrm_flowi_saddr(struct flowi *fl, unsigned short family)
1140 return (xfrm_address_t *)&fl->fl4_src;
1142 return (xfrm_address_t *)&fl->fl6_src;
1148 void xfrm_flowi_addr_get(struct flowi *fl,
1149 xfrm_address_t *saddr, xfrm_address_t *daddr,
1150 unsigned short family)
1154 memcpy(&saddr->a4, &fl->fl4_src, sizeof(saddr->a4));
1155 memcpy(&daddr->a4, &fl->fl4_dst, sizeof(daddr->a4));
1158 ipv6_addr_copy((struct in6_addr *)&saddr->a6, &fl->fl6_src);
1159 ipv6_addr_copy((struct in6_addr *)&daddr->a6, &fl->fl6_dst);
1164 static __inline__ int
1165 __xfrm4_state_addr_check(struct xfrm_state *x,
1166 xfrm_address_t *daddr, xfrm_address_t *saddr)
1168 if (daddr->a4 == x->id.daddr.a4 &&
1169 (saddr->a4 == x->props.saddr.a4 || !saddr->a4 || !x->props.saddr.a4))
1174 static __inline__ int
1175 __xfrm6_state_addr_check(struct xfrm_state *x,
1176 xfrm_address_t *daddr, xfrm_address_t *saddr)
1178 if (!ipv6_addr_cmp((struct in6_addr *)daddr, (struct in6_addr *)&x->id.daddr) &&
1179 (!ipv6_addr_cmp((struct in6_addr *)saddr, (struct in6_addr *)&x->props.saddr)||
1180 ipv6_addr_any((struct in6_addr *)saddr) ||
1181 ipv6_addr_any((struct in6_addr *)&x->props.saddr)))
1186 static __inline__ int
1187 xfrm_state_addr_check(struct xfrm_state *x,
1188 xfrm_address_t *daddr, xfrm_address_t *saddr,
1189 unsigned short family)
1193 return __xfrm4_state_addr_check(x, daddr, saddr);
1195 return __xfrm6_state_addr_check(x, daddr, saddr);
1200 static __inline__ int
1201 xfrm_state_addr_flow_check(struct xfrm_state *x, struct flowi *fl,
1202 unsigned short family)
1206 return __xfrm4_state_addr_check(x,
1207 (xfrm_address_t *)&fl->fl4_dst,
1208 (xfrm_address_t *)&fl->fl4_src);
1210 return __xfrm6_state_addr_check(x,
1211 (xfrm_address_t *)&fl->fl6_dst,
1212 (xfrm_address_t *)&fl->fl6_src);
1217 static inline int xfrm_state_kern(struct xfrm_state *x)
1219 return atomic_read(&x->tunnel_users);
1222 static inline int xfrm_id_proto_match(u8 proto, u8 userproto)
1224 return (!userproto || proto == userproto ||
1225 (userproto == IPSEC_PROTO_ANY && (proto == IPPROTO_AH ||
1226 proto == IPPROTO_ESP ||
1227 proto == IPPROTO_COMP)));
1231 * xfrm algorithm information
1233 struct xfrm_algo_aead_info {
1237 struct xfrm_algo_auth_info {
1242 struct xfrm_algo_encr_info {
1247 struct xfrm_algo_comp_info {
1251 struct xfrm_algo_desc {
1256 struct xfrm_algo_aead_info aead;
1257 struct xfrm_algo_auth_info auth;
1258 struct xfrm_algo_encr_info encr;
1259 struct xfrm_algo_comp_info comp;
1261 struct sadb_alg desc;
1264 /* XFRM tunnel handlers. */
1265 struct xfrm_tunnel {
1266 int (*handler)(struct sk_buff *skb);
1267 int (*err_handler)(struct sk_buff *skb, u32 info);
1269 struct xfrm_tunnel *next;
1273 struct xfrm6_tunnel {
1274 int (*handler)(struct sk_buff *skb);
1275 int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt,
1276 u8 type, u8 code, int offset, __be32 info);
1277 struct xfrm6_tunnel *next;
1281 extern void xfrm_init(void);
1282 extern void xfrm4_init(int rt_hash_size);
1283 extern int xfrm_state_init(struct net *net);
1284 extern void xfrm_state_fini(struct net *net);
1285 extern void xfrm4_state_init(void);
1287 extern int xfrm6_init(void);
1288 extern void xfrm6_fini(void);
1289 extern int xfrm6_state_init(void);
1290 extern void xfrm6_state_fini(void);
1292 static inline int xfrm6_init(void)
1296 static inline void xfrm6_fini(void)
1302 #ifdef CONFIG_XFRM_STATISTICS
1303 extern int xfrm_proc_init(struct net *net);
1304 extern void xfrm_proc_fini(struct net *net);
1307 extern int xfrm_sysctl_init(struct net *net);
1308 #ifdef CONFIG_SYSCTL
1309 extern void xfrm_sysctl_fini(struct net *net);
1311 static inline void xfrm_sysctl_fini(struct net *net)
1316 extern void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto);
1317 extern int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk,
1318 int (*func)(struct xfrm_state *, int, void*), void *);
1319 extern void xfrm_state_walk_done(struct xfrm_state_walk *walk);
1320 extern struct xfrm_state *xfrm_state_alloc(struct net *net);
1321 extern struct xfrm_state *xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
1322 struct flowi *fl, struct xfrm_tmpl *tmpl,
1323 struct xfrm_policy *pol, int *err,
1324 unsigned short family);
1325 extern struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark,
1326 xfrm_address_t *daddr,
1327 xfrm_address_t *saddr,
1328 unsigned short family,
1329 u8 mode, u8 proto, u32 reqid);
1330 extern int xfrm_state_check_expire(struct xfrm_state *x);
1331 extern void xfrm_state_insert(struct xfrm_state *x);
1332 extern int xfrm_state_add(struct xfrm_state *x);
1333 extern int xfrm_state_update(struct xfrm_state *x);
1334 extern struct xfrm_state *xfrm_state_lookup(struct net *net, u32 mark,
1335 xfrm_address_t *daddr, __be32 spi,
1336 u8 proto, unsigned short family);
1337 extern struct xfrm_state *xfrm_state_lookup_byaddr(struct net *net, u32 mark,
1338 xfrm_address_t *daddr,
1339 xfrm_address_t *saddr,
1341 unsigned short family);
1342 #ifdef CONFIG_XFRM_SUB_POLICY
1343 extern int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src,
1344 int n, unsigned short family);
1345 extern int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src,
1346 int n, unsigned short family);
1348 static inline int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src,
1349 int n, unsigned short family)
1354 static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src,
1355 int n, unsigned short family)
1361 struct xfrmk_sadinfo {
1362 u32 sadhcnt; /* current hash bkts */
1363 u32 sadhmcnt; /* max allowed hash bkts */
1364 u32 sadcnt; /* current running count */
1367 struct xfrmk_spdinfo {
1378 extern struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark,
1380 extern int xfrm_state_delete(struct xfrm_state *x);
1381 extern int xfrm_state_flush(struct net *net, u8 proto, struct xfrm_audit *audit_info);
1382 extern void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si);
1383 extern void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si);
1384 extern int xfrm_replay_check(struct xfrm_state *x,
1385 struct sk_buff *skb, __be32 seq);
1386 extern void xfrm_replay_advance(struct xfrm_state *x, __be32 seq);
1387 extern void xfrm_replay_notify(struct xfrm_state *x, int event);
1388 extern int xfrm_state_mtu(struct xfrm_state *x, int mtu);
1389 extern int xfrm_init_state(struct xfrm_state *x);
1390 extern int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb);
1391 extern int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi,
1393 extern int xfrm_input_resume(struct sk_buff *skb, int nexthdr);
1394 extern int xfrm_output_resume(struct sk_buff *skb, int err);
1395 extern int xfrm_output(struct sk_buff *skb);
1396 extern int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb);
1397 extern int xfrm4_extract_header(struct sk_buff *skb);
1398 extern int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb);
1399 extern int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi,
1401 extern int xfrm4_transport_finish(struct sk_buff *skb, int async);
1402 extern int xfrm4_rcv(struct sk_buff *skb);
1404 static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
1406 return xfrm4_rcv_encap(skb, nexthdr, spi, 0);
1409 extern int xfrm4_extract_output(struct xfrm_state *x, struct sk_buff *skb);
1410 extern int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb);
1411 extern int xfrm4_output(struct sk_buff *skb);
1412 extern int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family);
1413 extern int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family);
1414 extern int xfrm6_extract_header(struct sk_buff *skb);
1415 extern int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb);
1416 extern int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi);
1417 extern int xfrm6_transport_finish(struct sk_buff *skb, int async);
1418 extern int xfrm6_rcv(struct sk_buff *skb);
1419 extern int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
1420 xfrm_address_t *saddr, u8 proto);
1421 extern int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family);
1422 extern int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family);
1423 extern __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr);
1424 extern void xfrm6_tunnel_free_spi(struct net *net, xfrm_address_t *saddr);
1425 extern __be32 xfrm6_tunnel_spi_lookup(struct net *net, xfrm_address_t *saddr);
1426 extern int xfrm6_extract_output(struct xfrm_state *x, struct sk_buff *skb);
1427 extern int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb);
1428 extern int xfrm6_output(struct sk_buff *skb);
1429 extern int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
1433 extern int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb);
1434 extern int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen);
1436 static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen)
1438 return -ENOPROTOOPT;
1441 static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb)
1443 /* should not happen */
1449 struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp);
1451 extern void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type);
1452 extern int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk,
1453 int (*func)(struct xfrm_policy *, int, int, void*), void *);
1454 extern void xfrm_policy_walk_done(struct xfrm_policy_walk *walk);
1455 int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);
1456 struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark,
1458 struct xfrm_selector *sel,
1459 struct xfrm_sec_ctx *ctx, int delete,
1461 struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u8, int dir, u32 id, int delete, int *err);
1462 int xfrm_policy_flush(struct net *net, u8 type, struct xfrm_audit *audit_info);
1463 u32 xfrm_get_acqseq(void);
1464 extern int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi);
1465 struct xfrm_state *xfrm_find_acq(struct net *net, struct xfrm_mark *mark,
1466 u8 mode, u32 reqid, u8 proto,
1467 xfrm_address_t *daddr,
1468 xfrm_address_t *saddr, int create,
1469 unsigned short family);
1470 extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol);
1471 extern int xfrm_bundle_ok(struct xfrm_policy *pol, struct xfrm_dst *xdst,
1472 struct flowi *fl, int family, int strict);
1474 #ifdef CONFIG_XFRM_MIGRATE
1475 extern int km_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
1476 struct xfrm_migrate *m, int num_bundles,
1477 struct xfrm_kmaddress *k);
1478 extern struct xfrm_state * xfrm_migrate_state_find(struct xfrm_migrate *m);
1479 extern struct xfrm_state * xfrm_state_migrate(struct xfrm_state *x,
1480 struct xfrm_migrate *m);
1481 extern int xfrm_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
1482 struct xfrm_migrate *m, int num_bundles,
1483 struct xfrm_kmaddress *k);
1486 extern int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
1487 extern void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 pid);
1488 extern int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
1490 extern void xfrm_input_init(void);
1491 extern int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq);
1493 extern void xfrm_probe_algs(void);
1494 extern int xfrm_count_auth_supported(void);
1495 extern int xfrm_count_enc_supported(void);
1496 extern struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx);
1497 extern struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx);
1498 extern struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id);
1499 extern struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id);
1500 extern struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id);
1501 extern struct xfrm_algo_desc *xfrm_aalg_get_byname(char *name, int probe);
1502 extern struct xfrm_algo_desc *xfrm_ealg_get_byname(char *name, int probe);
1503 extern struct xfrm_algo_desc *xfrm_calg_get_byname(char *name, int probe);
1504 extern struct xfrm_algo_desc *xfrm_aead_get_byname(char *name, int icv_len,
1509 typedef int (icv_update_fn_t)(struct hash_desc *, struct scatterlist *,
1512 static inline int xfrm_addr_cmp(xfrm_address_t *a, xfrm_address_t *b,
1518 return (__force u32)a->a4 - (__force u32)b->a4;
1520 return ipv6_addr_cmp((struct in6_addr *)a,
1521 (struct in6_addr *)b);
1525 static inline int xfrm_policy_id2dir(u32 index)
1531 static inline int xfrm_aevent_is_on(struct net *net)
1537 nlsk = rcu_dereference(net->xfrm.nlsk);
1539 ret = netlink_has_listeners(nlsk, XFRMNLGRP_AEVENTS);
1545 static inline int xfrm_alg_len(struct xfrm_algo *alg)
1547 return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
1550 static inline int xfrm_alg_auth_len(struct xfrm_algo_auth *alg)
1552 return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
1555 #ifdef CONFIG_XFRM_MIGRATE
1556 static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig)
1558 return kmemdup(orig, xfrm_alg_len(orig), GFP_KERNEL);
1561 static inline struct xfrm_algo_auth *xfrm_algo_auth_clone(struct xfrm_algo_auth *orig)
1563 return kmemdup(orig, xfrm_alg_auth_len(orig), GFP_KERNEL);
1566 static inline void xfrm_states_put(struct xfrm_state **states, int n)
1569 for (i = 0; i < n; i++)
1570 xfrm_state_put(*(states + i));
1573 static inline void xfrm_states_delete(struct xfrm_state **states, int n)
1576 for (i = 0; i < n; i++)
1577 xfrm_state_delete(*(states + i));
1582 static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb)
1584 return skb->sp->xvec[skb->sp->len - 1];
1588 static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m)
1590 if (attrs[XFRMA_MARK])
1591 memcpy(m, nla_data(attrs[XFRMA_MARK]), sizeof(m));
1598 static inline int xfrm_mark_put(struct sk_buff *skb, struct xfrm_mark *m)
1601 NLA_PUT(skb, XFRMA_MARK, sizeof(struct xfrm_mark), m);
1608 #endif /* _NET_XFRM_H */