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>
23 #include <linux/interrupt.h>
25 #ifdef CONFIG_XFRM_STATISTICS
29 #define XFRM_PROTO_ESP 50
30 #define XFRM_PROTO_AH 51
31 #define XFRM_PROTO_COMP 108
32 #define XFRM_PROTO_IPIP 4
33 #define XFRM_PROTO_IPV6 41
34 #define XFRM_PROTO_ROUTING IPPROTO_ROUTING
35 #define XFRM_PROTO_DSTOPTS IPPROTO_DSTOPTS
37 #define XFRM_ALIGN8(len) (((len) + 7) & ~7)
38 #define MODULE_ALIAS_XFRM_MODE(family, encap) \
39 MODULE_ALIAS("xfrm-mode-" __stringify(family) "-" __stringify(encap))
40 #define MODULE_ALIAS_XFRM_TYPE(family, proto) \
41 MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto))
43 #ifdef CONFIG_XFRM_STATISTICS
44 #define XFRM_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.xfrm_statistics, field)
45 #define XFRM_INC_STATS_BH(net, field) SNMP_INC_STATS_BH((net)->mib.xfrm_statistics, field)
46 #define XFRM_INC_STATS_USER(net, field) SNMP_INC_STATS_USER((net)-mib.xfrm_statistics, field)
48 #define XFRM_INC_STATS(net, field) ((void)(net))
49 #define XFRM_INC_STATS_BH(net, field) ((void)(net))
50 #define XFRM_INC_STATS_USER(net, field) ((void)(net))
53 extern struct mutex xfrm_cfg_mutex;
55 /* Organization of SPD aka "XFRM rules"
56 ------------------------------------
59 - policy rule, struct xfrm_policy (=SPD entry)
60 - bundle of transformations, struct dst_entry == struct xfrm_dst (=SA bundle)
61 - instance of a transformer, struct xfrm_state (=SA)
62 - template to clone xfrm_state, struct xfrm_tmpl
64 SPD is plain linear list of xfrm_policy rules, ordered by priority.
65 (To be compatible with existing pfkeyv2 implementations,
66 many rules with priority of 0x7fffffff are allowed to exist and
67 such rules are ordered in an unpredictable way, thanks to bsd folks.)
69 Lookup is plain linear search until the first match with selector.
71 If "action" is "block", then we prohibit the flow, otherwise:
72 if "xfrms_nr" is zero, the flow passes untransformed. Otherwise,
73 policy entry has list of up to XFRM_MAX_DEPTH transformations,
74 described by templates xfrm_tmpl. Each template is resolved
75 to a complete xfrm_state (see below) and we pack bundle of transformations
76 to a dst_entry returned to requestor.
78 dst -. xfrm .-> xfrm_state #1
79 |---. child .-> dst -. xfrm .-> xfrm_state #2
80 |---. child .-> dst -. xfrm .-> xfrm_state #3
83 Bundles are cached at xrfm_policy struct (field ->bundles).
86 Resolution of xrfm_tmpl
87 -----------------------
89 1. ->mode Mode: transport or tunnel
90 2. ->id.proto Protocol: AH/ESP/IPCOMP
91 3. ->id.daddr Remote tunnel endpoint, ignored for transport mode.
92 Q: allow to resolve security gateway?
93 4. ->id.spi If not zero, static SPI.
94 5. ->saddr Local tunnel endpoint, ignored for transport mode.
95 6. ->algos List of allowed algos. Plain bitmask now.
96 Q: ealgos, aalgos, calgos. What a mess...
97 7. ->share Sharing mode.
98 Q: how to implement private sharing mode? To add struct sock* to
101 Having this template we search through SAD searching for entries
102 with appropriate mode/proto/algo, permitted by selector.
103 If no appropriate entry found, it is requested from key manager.
106 Q: How to find all the bundles referring to a physical path for
107 PMTU discovery? Seems, dst should contain list of all parents...
108 and enter to infinite locking hierarchy disaster.
109 No! It is easier, we will not search for them, let them find us.
110 We add genid to each dst plus pointer to genid of raw IP route,
111 pmtu disc will update pmtu on raw IP route and increase its genid.
112 dst_check() will see this for top level and trigger resyncing
113 metrics. Plus, it will be made via sk->sk_dst_cache. Solved.
116 struct xfrm_state_walk {
117 struct list_head all;
126 /* Full description of state of transformer. */
132 struct hlist_node gclist;
133 struct hlist_node bydst;
135 struct hlist_node bysrc;
136 struct hlist_node byspi;
142 struct xfrm_selector sel;
143 struct xfrm_mark mark;
147 /* Key manager bits */
148 struct xfrm_state_walk km;
150 /* Parameters of this state. */
155 u8 aalgo, ealgo, calgo;
158 xfrm_address_t saddr;
163 struct xfrm_lifetime_cfg lft;
165 /* Data for transformer */
166 struct xfrm_algo_auth *aalg;
167 struct xfrm_algo *ealg;
168 struct xfrm_algo *calg;
169 struct xfrm_algo_aead *aead;
171 /* Data for encapsulator */
172 struct xfrm_encap_tmpl *encap;
174 /* Data for care-of address */
175 xfrm_address_t *coaddr;
177 /* IPComp needs an IPIP tunnel for handling uncompressed packets */
178 struct xfrm_state *tunnel;
180 /* If a tunnel, number of users + 1 */
181 atomic_t tunnel_users;
183 /* State for replay detection */
184 struct xfrm_replay_state replay;
186 /* Replay detection state at the time we sent the last notification */
187 struct xfrm_replay_state preplay;
189 /* internal flag that only holds state for delayed aevent at the
194 /* Replay detection notification settings */
198 /* Replay detection notification timer */
199 struct timer_list rtimer;
202 struct xfrm_stats stats;
204 struct xfrm_lifetime_cur curlft;
205 struct tasklet_hrtimer mtimer;
208 unsigned long lastused;
210 /* Reference to data common to all the instances of this
212 const struct xfrm_type *type;
213 struct xfrm_mode *inner_mode;
214 struct xfrm_mode *inner_mode_iaf;
215 struct xfrm_mode *outer_mode;
217 /* Security context */
218 struct xfrm_sec_ctx *security;
220 /* Private data of this transformer, format is opaque,
221 * interpreted by xfrm_type methods. */
225 static inline struct net *xs_net(struct xfrm_state *x)
227 return read_pnet(&x->xs_net);
230 /* xflags - make enum if more show up */
231 #define XFRM_TIME_DEFER 1
242 /* callback structure passed from either netlink or pfkey */
261 struct xfrm_policy_afinfo {
262 unsigned short family;
263 struct dst_ops *dst_ops;
264 void (*garbage_collect)(struct net *net);
265 struct dst_entry *(*dst_lookup)(struct net *net, int tos,
266 xfrm_address_t *saddr,
267 xfrm_address_t *daddr);
268 int (*get_saddr)(struct net *net, xfrm_address_t *saddr, xfrm_address_t *daddr);
269 struct dst_entry *(*find_bundle)(struct flowi *fl, struct xfrm_policy *policy);
270 void (*decode_session)(struct sk_buff *skb,
273 int (*get_tos)(struct flowi *fl);
274 int (*init_path)(struct xfrm_dst *path,
275 struct dst_entry *dst,
277 int (*fill_dst)(struct xfrm_dst *xdst,
278 struct net_device *dev);
281 extern int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo);
282 extern int xfrm_policy_unregister_afinfo(struct xfrm_policy_afinfo *afinfo);
283 extern void km_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c);
284 extern void km_state_notify(struct xfrm_state *x, struct km_event *c);
287 extern int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol);
288 extern void km_state_expired(struct xfrm_state *x, int hard, u32 pid);
289 extern int __xfrm_state_delete(struct xfrm_state *x);
291 struct xfrm_state_afinfo {
295 struct module *owner;
296 const struct xfrm_type *type_map[IPPROTO_MAX];
297 struct xfrm_mode *mode_map[XFRM_MODE_MAX];
298 int (*init_flags)(struct xfrm_state *x);
299 void (*init_tempsel)(struct xfrm_state *x, struct flowi *fl,
300 struct xfrm_tmpl *tmpl,
301 xfrm_address_t *daddr, xfrm_address_t *saddr);
302 int (*tmpl_sort)(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n);
303 int (*state_sort)(struct xfrm_state **dst, struct xfrm_state **src, int n);
304 int (*output)(struct sk_buff *skb);
305 int (*extract_input)(struct xfrm_state *x,
306 struct sk_buff *skb);
307 int (*extract_output)(struct xfrm_state *x,
308 struct sk_buff *skb);
309 int (*transport_finish)(struct sk_buff *skb,
313 extern int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo);
314 extern int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo);
316 extern void xfrm_state_delete_tunnel(struct xfrm_state *x);
320 struct module *owner;
323 #define XFRM_TYPE_NON_FRAGMENT 1
324 #define XFRM_TYPE_REPLAY_PROT 2
325 #define XFRM_TYPE_LOCAL_COADDR 4
326 #define XFRM_TYPE_REMOTE_COADDR 8
328 int (*init_state)(struct xfrm_state *x);
329 void (*destructor)(struct xfrm_state *);
330 int (*input)(struct xfrm_state *, struct sk_buff *skb);
331 int (*output)(struct xfrm_state *, struct sk_buff *pskb);
332 int (*reject)(struct xfrm_state *, struct sk_buff *, struct flowi *);
333 int (*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **);
334 /* Estimate maximal size of result of transformation of a dgram */
335 u32 (*get_mtu)(struct xfrm_state *, int size);
338 extern int xfrm_register_type(const struct xfrm_type *type, unsigned short family);
339 extern int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family);
343 * Remove encapsulation header.
345 * The IP header will be moved over the top of the encapsulation
348 * On entry, the transport header shall point to where the IP header
349 * should be and the network header shall be set to where the IP
350 * header currently is. skb->data shall point to the start of the
353 int (*input2)(struct xfrm_state *x, struct sk_buff *skb);
356 * This is the actual input entry point.
358 * For transport mode and equivalent this would be identical to
359 * input2 (which does not need to be set). While tunnel mode
360 * and equivalent would set this to the tunnel encapsulation function
361 * xfrm4_prepare_input that would in turn call input2.
363 int (*input)(struct xfrm_state *x, struct sk_buff *skb);
366 * Add encapsulation header.
368 * On exit, the transport header will be set to the start of the
369 * encapsulation header to be filled in by x->type->output and
370 * the mac header will be set to the nextheader (protocol for
371 * IPv4) field of the extension header directly preceding the
372 * encapsulation header, or in its absence, that of the top IP
373 * header. The value of the network header will always point
374 * to the top IP header while skb->data will point to the payload.
376 int (*output2)(struct xfrm_state *x,struct sk_buff *skb);
379 * This is the actual output entry point.
381 * For transport mode and equivalent this would be identical to
382 * output2 (which does not need to be set). While tunnel mode
383 * and equivalent would set this to a tunnel encapsulation function
384 * (xfrm4_prepare_output or xfrm6_prepare_output) that would in turn
387 int (*output)(struct xfrm_state *x, struct sk_buff *skb);
389 struct xfrm_state_afinfo *afinfo;
390 struct module *owner;
395 /* Flags for xfrm_mode. */
397 XFRM_MODE_FLAG_TUNNEL = 1,
400 extern int xfrm_register_mode(struct xfrm_mode *mode, int family);
401 extern int xfrm_unregister_mode(struct xfrm_mode *mode, int family);
403 static inline int xfrm_af2proto(unsigned int family)
415 static inline struct xfrm_mode *xfrm_ip2inner_mode(struct xfrm_state *x, int ipproto)
417 if ((ipproto == IPPROTO_IPIP && x->props.family == AF_INET) ||
418 (ipproto == IPPROTO_IPV6 && x->props.family == AF_INET6))
419 return x->inner_mode;
421 return x->inner_mode_iaf;
425 /* id in template is interpreted as:
426 * daddr - destination of tunnel, may be zero for transport mode.
427 * spi - zero to acquire spi. Not zero if spi is static, then
428 * daddr must be fixed too.
429 * proto - AH/ESP/IPCOMP
433 /* Source address of tunnel. Ignored, if it is not a tunnel. */
434 xfrm_address_t saddr;
436 unsigned short encap_family;
440 /* Mode: transport, tunnel etc. */
443 /* Sharing mode: unique, this session only, this user only etc. */
446 /* May skip this transfomration if no SA is found */
449 /* Skip aalgos/ealgos/calgos checks. */
452 /* Bit mask of algos allowed for acquisition */
458 #define XFRM_MAX_DEPTH 6
460 struct xfrm_policy_walk_entry {
461 struct list_head all;
465 struct xfrm_policy_walk {
466 struct xfrm_policy_walk_entry walk;
475 struct hlist_node bydst;
476 struct hlist_node byidx;
478 /* This lock only affects elements except for entry. */
481 struct timer_list timer;
485 struct xfrm_mark mark;
486 struct xfrm_selector selector;
487 struct xfrm_lifetime_cfg lft;
488 struct xfrm_lifetime_cur curlft;
489 struct dst_entry *bundles;
490 struct xfrm_policy_walk_entry walk;
496 struct xfrm_sec_ctx *security;
497 struct xfrm_tmpl xfrm_vec[XFRM_MAX_DEPTH];
500 static inline struct net *xp_net(struct xfrm_policy *xp)
502 return read_pnet(&xp->xp_net);
505 struct xfrm_kmaddress {
506 xfrm_address_t local;
507 xfrm_address_t remote;
512 struct xfrm_migrate {
513 xfrm_address_t old_daddr;
514 xfrm_address_t old_saddr;
515 xfrm_address_t new_daddr;
516 xfrm_address_t new_saddr;
525 #define XFRM_KM_TIMEOUT 30
527 #define XFRM_REPLAY_SEQ 1
528 #define XFRM_REPLAY_OSEQ 2
529 #define XFRM_REPLAY_SEQ_MASK 3
531 #define XFRM_REPLAY_UPDATE XFRM_AE_CR
532 #define XFRM_REPLAY_TIMEOUT XFRM_AE_CE
534 /* default aevent timeout in units of 100ms */
535 #define XFRM_AE_ETIME 10
536 /* Async Event timer multiplier */
537 #define XFRM_AE_ETH_M 10
538 /* default seq threshold size */
539 #define XFRM_AE_SEQT_SIZE 2
542 struct list_head list;
544 int (*notify)(struct xfrm_state *x, struct km_event *c);
545 int (*acquire)(struct xfrm_state *x, struct xfrm_tmpl *, struct xfrm_policy *xp, int dir);
546 struct xfrm_policy *(*compile_policy)(struct sock *sk, int opt, u8 *data, int len, int *dir);
547 int (*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
548 int (*notify_policy)(struct xfrm_policy *x, int dir, struct km_event *c);
549 int (*report)(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
550 int (*migrate)(struct xfrm_selector *sel, u8 dir, u8 type, struct xfrm_migrate *m, int num_bundles, struct xfrm_kmaddress *k);
553 extern int xfrm_register_km(struct xfrm_mgr *km);
554 extern int xfrm_unregister_km(struct xfrm_mgr *km);
557 * This structure is used for the duration where packets are being
558 * transformed by IPsec. As soon as the packet leaves IPsec the
559 * area beyond the generic IP part may be overwritten.
563 struct inet_skb_parm h4;
564 struct inet6_skb_parm h6;
567 /* Sequence number for replay protection. */
574 #define XFRM_SKB_CB(__skb) ((struct xfrm_skb_cb *)&((__skb)->cb[0]))
577 * This structure is used by the afinfo prepare_input/prepare_output functions
578 * to transmit header information to the mode input/output functions.
580 struct xfrm_mode_skb_cb {
582 struct inet_skb_parm h4;
583 struct inet6_skb_parm h6;
586 /* Copied from header for IPv4, always set to zero and DF for IPv6. */
590 /* IP header length (excluding options or extension headers). */
593 /* TOS for IPv4, class for IPv6. */
596 /* TTL for IPv4, hop limitfor IPv6. */
599 /* Protocol for IPv4, NH for IPv6. */
602 /* Option length for IPv4, zero for IPv6. */
605 /* Used by IPv6 only, zero for IPv4. */
609 #define XFRM_MODE_SKB_CB(__skb) ((struct xfrm_mode_skb_cb *)&((__skb)->cb[0]))
612 * This structure is used by the input processing to locate the SPI and
613 * related information.
615 struct xfrm_spi_skb_cb {
617 struct inet_skb_parm h4;
618 struct inet6_skb_parm h6;
621 unsigned int daddroff;
625 #define XFRM_SPI_SKB_CB(__skb) ((struct xfrm_spi_skb_cb *)&((__skb)->cb[0]))
627 /* Audit Information */
634 #ifdef CONFIG_AUDITSYSCALL
635 static inline struct audit_buffer *xfrm_audit_start(const char *op)
637 struct audit_buffer *audit_buf = NULL;
639 if (audit_enabled == 0)
641 audit_buf = audit_log_start(current->audit_context, GFP_ATOMIC,
642 AUDIT_MAC_IPSEC_EVENT);
643 if (audit_buf == NULL)
645 audit_log_format(audit_buf, "op=%s", op);
649 static inline void xfrm_audit_helper_usrinfo(uid_t auid, u32 ses, u32 secid,
650 struct audit_buffer *audit_buf)
655 audit_log_format(audit_buf, " auid=%u ses=%u", auid, ses);
657 security_secid_to_secctx(secid, &secctx, &secctx_len) == 0) {
658 audit_log_format(audit_buf, " subj=%s", secctx);
659 security_release_secctx(secctx, secctx_len);
661 audit_log_task_context(audit_buf);
664 extern void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
665 u32 auid, u32 ses, u32 secid);
666 extern void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
667 u32 auid, u32 ses, u32 secid);
668 extern void xfrm_audit_state_add(struct xfrm_state *x, int result,
669 u32 auid, u32 ses, u32 secid);
670 extern void xfrm_audit_state_delete(struct xfrm_state *x, int result,
671 u32 auid, u32 ses, u32 secid);
672 extern void xfrm_audit_state_replay_overflow(struct xfrm_state *x,
673 struct sk_buff *skb);
674 extern void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family);
675 extern void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family,
676 __be32 net_spi, __be32 net_seq);
677 extern void xfrm_audit_state_icvfail(struct xfrm_state *x,
678 struct sk_buff *skb, u8 proto);
681 static inline void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
682 u32 auid, u32 ses, u32 secid)
686 static inline void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
687 u32 auid, u32 ses, u32 secid)
691 static inline void xfrm_audit_state_add(struct xfrm_state *x, int result,
692 u32 auid, u32 ses, u32 secid)
696 static inline void xfrm_audit_state_delete(struct xfrm_state *x, int result,
697 u32 auid, u32 ses, u32 secid)
701 static inline void xfrm_audit_state_replay_overflow(struct xfrm_state *x,
706 static inline void xfrm_audit_state_notfound_simple(struct sk_buff *skb,
711 static inline void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family,
712 __be32 net_spi, __be32 net_seq)
716 static inline void xfrm_audit_state_icvfail(struct xfrm_state *x,
717 struct sk_buff *skb, u8 proto)
720 #endif /* CONFIG_AUDITSYSCALL */
722 static inline void xfrm_pol_hold(struct xfrm_policy *policy)
724 if (likely(policy != NULL))
725 atomic_inc(&policy->refcnt);
728 extern void xfrm_policy_destroy(struct xfrm_policy *policy);
730 static inline void xfrm_pol_put(struct xfrm_policy *policy)
732 if (atomic_dec_and_test(&policy->refcnt))
733 xfrm_policy_destroy(policy);
736 #ifdef CONFIG_XFRM_SUB_POLICY
737 static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols)
740 for (i = npols - 1; i >= 0; --i)
741 xfrm_pol_put(pols[i]);
744 static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols)
746 xfrm_pol_put(pols[0]);
750 extern void __xfrm_state_destroy(struct xfrm_state *);
752 static inline void __xfrm_state_put(struct xfrm_state *x)
754 atomic_dec(&x->refcnt);
757 static inline void xfrm_state_put(struct xfrm_state *x)
759 if (atomic_dec_and_test(&x->refcnt))
760 __xfrm_state_destroy(x);
763 static inline void xfrm_state_hold(struct xfrm_state *x)
765 atomic_inc(&x->refcnt);
768 static __inline__ int addr_match(void *token1, void *token2, int prefixlen)
775 pdw = prefixlen >> 5; /* num of whole u32 in prefix */
776 pbi = prefixlen & 0x1f; /* num of bits in incomplete u32 in prefix */
779 if (memcmp(a1, a2, pdw << 2))
785 mask = htonl((0xffffffff) << (32 - pbi));
787 if ((a1[pdw] ^ a2[pdw]) & mask)
795 __be16 xfrm_flowi_sport(struct flowi *fl)
801 case IPPROTO_UDPLITE:
803 port = fl->fl_ip_sport;
807 port = htons(fl->fl_icmp_type);
810 port = htons(fl->fl_mh_type);
819 __be16 xfrm_flowi_dport(struct flowi *fl)
825 case IPPROTO_UDPLITE:
827 port = fl->fl_ip_dport;
831 port = htons(fl->fl_icmp_code);
839 extern int xfrm_selector_match(struct xfrm_selector *sel, struct flowi *fl,
840 unsigned short family);
842 #ifdef CONFIG_SECURITY_NETWORK_XFRM
843 /* If neither has a context --> match
844 * Otherwise, both must have a context and the sids, doi, alg must match
846 static inline int xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2)
848 return ((!s1 && !s2) ||
850 (s1->ctx_sid == s2->ctx_sid) &&
851 (s1->ctx_doi == s2->ctx_doi) &&
852 (s1->ctx_alg == s2->ctx_alg)));
855 static inline int xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2)
861 /* A struct encoding bundle of transformations to apply to some set of flow.
863 * dst->child points to the next element of bundle.
864 * dst->xfrm points to an instanse of transformer.
866 * Due to unfortunate limitations of current routing cache, which we
867 * have no time to fix, it mirrors struct rtable and bound to the same
868 * routing key, including saddr,daddr. However, we can have many of
869 * bundles differing by session id. All the bundles grow from a parent
874 struct dst_entry dst;
878 struct dst_entry *route;
879 #ifdef CONFIG_XFRM_SUB_POLICY
880 struct flowi *origin;
881 struct xfrm_selector *partner;
884 u32 route_mtu_cached;
885 u32 child_mtu_cached;
891 static inline void xfrm_dst_destroy(struct xfrm_dst *xdst)
893 dst_release(xdst->route);
894 if (likely(xdst->u.dst.xfrm))
895 xfrm_state_put(xdst->u.dst.xfrm);
896 #ifdef CONFIG_XFRM_SUB_POLICY
899 kfree(xdst->partner);
900 xdst->partner = NULL;
905 extern void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev);
910 struct xfrm_state *xvec[XFRM_MAX_DEPTH];
913 static inline struct sec_path *
914 secpath_get(struct sec_path *sp)
917 atomic_inc(&sp->refcnt);
921 extern void __secpath_destroy(struct sec_path *sp);
924 secpath_put(struct sec_path *sp)
926 if (sp && atomic_dec_and_test(&sp->refcnt))
927 __secpath_destroy(sp);
930 extern struct sec_path *secpath_dup(struct sec_path *src);
933 secpath_reset(struct sk_buff *skb)
936 secpath_put(skb->sp);
942 xfrm_addr_any(xfrm_address_t *addr, unsigned short family)
946 return addr->a4 == 0;
948 return ipv6_addr_any((struct in6_addr *)&addr->a6);
954 __xfrm4_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x)
956 return (tmpl->saddr.a4 &&
957 tmpl->saddr.a4 != x->props.saddr.a4);
961 __xfrm6_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x)
963 return (!ipv6_addr_any((struct in6_addr*)&tmpl->saddr) &&
964 ipv6_addr_cmp((struct in6_addr *)&tmpl->saddr, (struct in6_addr*)&x->props.saddr));
968 xfrm_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x, unsigned short family)
972 return __xfrm4_state_addr_cmp(tmpl, x);
974 return __xfrm6_state_addr_cmp(tmpl, x);
980 extern int __xfrm_policy_check(struct sock *, int dir, struct sk_buff *skb, unsigned short family);
982 static inline int __xfrm_policy_check2(struct sock *sk, int dir,
984 unsigned int family, int reverse)
986 struct net *net = dev_net(skb->dev);
987 int ndir = dir | (reverse ? XFRM_POLICY_MASK + 1 : 0);
989 if (sk && sk->sk_policy[XFRM_POLICY_IN])
990 return __xfrm_policy_check(sk, ndir, skb, family);
992 return (!net->xfrm.policy_count[dir] && !skb->sp) ||
993 (skb_dst(skb)->flags & DST_NOPOLICY) ||
994 __xfrm_policy_check(sk, ndir, skb, family);
997 static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family)
999 return __xfrm_policy_check2(sk, dir, skb, family, 0);
1002 static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1004 return xfrm_policy_check(sk, dir, skb, AF_INET);
1007 static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1009 return xfrm_policy_check(sk, dir, skb, AF_INET6);
1012 static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir,
1013 struct sk_buff *skb)
1015 return __xfrm_policy_check2(sk, dir, skb, AF_INET, 1);
1018 static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
1019 struct sk_buff *skb)
1021 return __xfrm_policy_check2(sk, dir, skb, AF_INET6, 1);
1024 extern int __xfrm_decode_session(struct sk_buff *skb, struct flowi *fl,
1025 unsigned int family, int reverse);
1027 static inline int xfrm_decode_session(struct sk_buff *skb, struct flowi *fl,
1028 unsigned int family)
1030 return __xfrm_decode_session(skb, fl, family, 0);
1033 static inline int xfrm_decode_session_reverse(struct sk_buff *skb,
1035 unsigned int family)
1037 return __xfrm_decode_session(skb, fl, family, 1);
1040 extern int __xfrm_route_forward(struct sk_buff *skb, unsigned short family);
1042 static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family)
1044 struct net *net = dev_net(skb->dev);
1046 return !net->xfrm.policy_count[XFRM_POLICY_OUT] ||
1047 (skb_dst(skb)->flags & DST_NOXFRM) ||
1048 __xfrm_route_forward(skb, family);
1051 static inline int xfrm4_route_forward(struct sk_buff *skb)
1053 return xfrm_route_forward(skb, AF_INET);
1056 static inline int xfrm6_route_forward(struct sk_buff *skb)
1058 return xfrm_route_forward(skb, AF_INET6);
1061 extern int __xfrm_sk_clone_policy(struct sock *sk);
1063 static inline int xfrm_sk_clone_policy(struct sock *sk)
1065 if (unlikely(sk->sk_policy[0] || sk->sk_policy[1]))
1066 return __xfrm_sk_clone_policy(sk);
1070 extern int xfrm_policy_delete(struct xfrm_policy *pol, int dir);
1072 static inline void xfrm_sk_free_policy(struct sock *sk)
1074 if (unlikely(sk->sk_policy[0] != NULL)) {
1075 xfrm_policy_delete(sk->sk_policy[0], XFRM_POLICY_MAX);
1076 sk->sk_policy[0] = NULL;
1078 if (unlikely(sk->sk_policy[1] != NULL)) {
1079 xfrm_policy_delete(sk->sk_policy[1], XFRM_POLICY_MAX+1);
1080 sk->sk_policy[1] = NULL;
1086 static inline void xfrm_sk_free_policy(struct sock *sk) {}
1087 static inline int xfrm_sk_clone_policy(struct sock *sk) { return 0; }
1088 static inline int xfrm6_route_forward(struct sk_buff *skb) { return 1; }
1089 static inline int xfrm4_route_forward(struct sk_buff *skb) { return 1; }
1090 static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1094 static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
1098 static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family)
1102 static inline int xfrm_decode_session_reverse(struct sk_buff *skb,
1104 unsigned int family)
1108 static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir,
1109 struct sk_buff *skb)
1113 static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
1114 struct sk_buff *skb)
1121 xfrm_address_t *xfrm_flowi_daddr(struct flowi *fl, unsigned short family)
1125 return (xfrm_address_t *)&fl->fl4_dst;
1127 return (xfrm_address_t *)&fl->fl6_dst;
1133 xfrm_address_t *xfrm_flowi_saddr(struct flowi *fl, unsigned short family)
1137 return (xfrm_address_t *)&fl->fl4_src;
1139 return (xfrm_address_t *)&fl->fl6_src;
1145 void xfrm_flowi_addr_get(struct flowi *fl,
1146 xfrm_address_t *saddr, xfrm_address_t *daddr,
1147 unsigned short family)
1151 memcpy(&saddr->a4, &fl->fl4_src, sizeof(saddr->a4));
1152 memcpy(&daddr->a4, &fl->fl4_dst, sizeof(daddr->a4));
1155 ipv6_addr_copy((struct in6_addr *)&saddr->a6, &fl->fl6_src);
1156 ipv6_addr_copy((struct in6_addr *)&daddr->a6, &fl->fl6_dst);
1161 static __inline__ int
1162 __xfrm4_state_addr_check(struct xfrm_state *x,
1163 xfrm_address_t *daddr, xfrm_address_t *saddr)
1165 if (daddr->a4 == x->id.daddr.a4 &&
1166 (saddr->a4 == x->props.saddr.a4 || !saddr->a4 || !x->props.saddr.a4))
1171 static __inline__ int
1172 __xfrm6_state_addr_check(struct xfrm_state *x,
1173 xfrm_address_t *daddr, xfrm_address_t *saddr)
1175 if (!ipv6_addr_cmp((struct in6_addr *)daddr, (struct in6_addr *)&x->id.daddr) &&
1176 (!ipv6_addr_cmp((struct in6_addr *)saddr, (struct in6_addr *)&x->props.saddr)||
1177 ipv6_addr_any((struct in6_addr *)saddr) ||
1178 ipv6_addr_any((struct in6_addr *)&x->props.saddr)))
1183 static __inline__ int
1184 xfrm_state_addr_check(struct xfrm_state *x,
1185 xfrm_address_t *daddr, xfrm_address_t *saddr,
1186 unsigned short family)
1190 return __xfrm4_state_addr_check(x, daddr, saddr);
1192 return __xfrm6_state_addr_check(x, daddr, saddr);
1197 static __inline__ int
1198 xfrm_state_addr_flow_check(struct xfrm_state *x, struct flowi *fl,
1199 unsigned short family)
1203 return __xfrm4_state_addr_check(x,
1204 (xfrm_address_t *)&fl->fl4_dst,
1205 (xfrm_address_t *)&fl->fl4_src);
1207 return __xfrm6_state_addr_check(x,
1208 (xfrm_address_t *)&fl->fl6_dst,
1209 (xfrm_address_t *)&fl->fl6_src);
1214 static inline int xfrm_state_kern(struct xfrm_state *x)
1216 return atomic_read(&x->tunnel_users);
1219 static inline int xfrm_id_proto_match(u8 proto, u8 userproto)
1221 return (!userproto || proto == userproto ||
1222 (userproto == IPSEC_PROTO_ANY && (proto == IPPROTO_AH ||
1223 proto == IPPROTO_ESP ||
1224 proto == IPPROTO_COMP)));
1228 * xfrm algorithm information
1230 struct xfrm_algo_aead_info {
1234 struct xfrm_algo_auth_info {
1239 struct xfrm_algo_encr_info {
1244 struct xfrm_algo_comp_info {
1248 struct xfrm_algo_desc {
1253 struct xfrm_algo_aead_info aead;
1254 struct xfrm_algo_auth_info auth;
1255 struct xfrm_algo_encr_info encr;
1256 struct xfrm_algo_comp_info comp;
1258 struct sadb_alg desc;
1261 /* XFRM tunnel handlers. */
1262 struct xfrm_tunnel {
1263 int (*handler)(struct sk_buff *skb);
1264 int (*err_handler)(struct sk_buff *skb, u32 info);
1266 struct xfrm_tunnel *next;
1270 struct xfrm6_tunnel {
1271 int (*handler)(struct sk_buff *skb);
1272 int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt,
1273 u8 type, u8 code, int offset, __be32 info);
1274 struct xfrm6_tunnel *next;
1278 extern void xfrm_init(void);
1279 extern void xfrm4_init(int rt_hash_size);
1280 extern int xfrm_state_init(struct net *net);
1281 extern void xfrm_state_fini(struct net *net);
1282 extern void xfrm4_state_init(void);
1284 extern int xfrm6_init(void);
1285 extern void xfrm6_fini(void);
1286 extern int xfrm6_state_init(void);
1287 extern void xfrm6_state_fini(void);
1289 static inline int xfrm6_init(void)
1293 static inline void xfrm6_fini(void)
1299 #ifdef CONFIG_XFRM_STATISTICS
1300 extern int xfrm_proc_init(struct net *net);
1301 extern void xfrm_proc_fini(struct net *net);
1304 extern int xfrm_sysctl_init(struct net *net);
1305 #ifdef CONFIG_SYSCTL
1306 extern void xfrm_sysctl_fini(struct net *net);
1308 static inline void xfrm_sysctl_fini(struct net *net)
1313 extern void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto);
1314 extern int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk,
1315 int (*func)(struct xfrm_state *, int, void*), void *);
1316 extern void xfrm_state_walk_done(struct xfrm_state_walk *walk);
1317 extern struct xfrm_state *xfrm_state_alloc(struct net *net);
1318 extern struct xfrm_state *xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
1319 struct flowi *fl, struct xfrm_tmpl *tmpl,
1320 struct xfrm_policy *pol, int *err,
1321 unsigned short family);
1322 extern struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark,
1323 xfrm_address_t *daddr,
1324 xfrm_address_t *saddr,
1325 unsigned short family,
1326 u8 mode, u8 proto, u32 reqid);
1327 extern int xfrm_state_check_expire(struct xfrm_state *x);
1328 extern void xfrm_state_insert(struct xfrm_state *x);
1329 extern int xfrm_state_add(struct xfrm_state *x);
1330 extern int xfrm_state_update(struct xfrm_state *x);
1331 extern struct xfrm_state *xfrm_state_lookup(struct net *net, u32 mark,
1332 xfrm_address_t *daddr, __be32 spi,
1333 u8 proto, unsigned short family);
1334 extern struct xfrm_state *xfrm_state_lookup_byaddr(struct net *net, u32 mark,
1335 xfrm_address_t *daddr,
1336 xfrm_address_t *saddr,
1338 unsigned short family);
1339 #ifdef CONFIG_XFRM_SUB_POLICY
1340 extern int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src,
1341 int n, unsigned short family);
1342 extern int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src,
1343 int n, unsigned short family);
1345 static inline int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src,
1346 int n, unsigned short family)
1351 static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src,
1352 int n, unsigned short family)
1358 struct xfrmk_sadinfo {
1359 u32 sadhcnt; /* current hash bkts */
1360 u32 sadhmcnt; /* max allowed hash bkts */
1361 u32 sadcnt; /* current running count */
1364 struct xfrmk_spdinfo {
1375 extern struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark,
1377 extern int xfrm_state_delete(struct xfrm_state *x);
1378 extern int xfrm_state_flush(struct net *net, u8 proto, struct xfrm_audit *audit_info);
1379 extern void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si);
1380 extern void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si);
1381 extern int xfrm_replay_check(struct xfrm_state *x,
1382 struct sk_buff *skb, __be32 seq);
1383 extern void xfrm_replay_advance(struct xfrm_state *x, __be32 seq);
1384 extern void xfrm_replay_notify(struct xfrm_state *x, int event);
1385 extern int xfrm_state_mtu(struct xfrm_state *x, int mtu);
1386 extern int xfrm_init_state(struct xfrm_state *x);
1387 extern int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb);
1388 extern int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi,
1390 extern int xfrm_input_resume(struct sk_buff *skb, int nexthdr);
1391 extern int xfrm_output_resume(struct sk_buff *skb, int err);
1392 extern int xfrm_output(struct sk_buff *skb);
1393 extern int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb);
1394 extern int xfrm4_extract_header(struct sk_buff *skb);
1395 extern int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb);
1396 extern int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi,
1398 extern int xfrm4_transport_finish(struct sk_buff *skb, int async);
1399 extern int xfrm4_rcv(struct sk_buff *skb);
1401 static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
1403 return xfrm4_rcv_encap(skb, nexthdr, spi, 0);
1406 extern int xfrm4_extract_output(struct xfrm_state *x, struct sk_buff *skb);
1407 extern int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb);
1408 extern int xfrm4_output(struct sk_buff *skb);
1409 extern int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family);
1410 extern int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family);
1411 extern int xfrm6_extract_header(struct sk_buff *skb);
1412 extern int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb);
1413 extern int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi);
1414 extern int xfrm6_transport_finish(struct sk_buff *skb, int async);
1415 extern int xfrm6_rcv(struct sk_buff *skb);
1416 extern int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
1417 xfrm_address_t *saddr, u8 proto);
1418 extern int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family);
1419 extern int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family);
1420 extern __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr);
1421 extern void xfrm6_tunnel_free_spi(struct net *net, xfrm_address_t *saddr);
1422 extern __be32 xfrm6_tunnel_spi_lookup(struct net *net, xfrm_address_t *saddr);
1423 extern int xfrm6_extract_output(struct xfrm_state *x, struct sk_buff *skb);
1424 extern int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb);
1425 extern int xfrm6_output(struct sk_buff *skb);
1426 extern int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
1430 extern int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb);
1431 extern int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen);
1433 static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen)
1435 return -ENOPROTOOPT;
1438 static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb)
1440 /* should not happen */
1446 struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp);
1448 extern void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type);
1449 extern int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk,
1450 int (*func)(struct xfrm_policy *, int, int, void*), void *);
1451 extern void xfrm_policy_walk_done(struct xfrm_policy_walk *walk);
1452 int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);
1453 struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark,
1455 struct xfrm_selector *sel,
1456 struct xfrm_sec_ctx *ctx, int delete,
1458 struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u8, int dir, u32 id, int delete, int *err);
1459 int xfrm_policy_flush(struct net *net, u8 type, struct xfrm_audit *audit_info);
1460 u32 xfrm_get_acqseq(void);
1461 extern int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi);
1462 struct xfrm_state *xfrm_find_acq(struct net *net, struct xfrm_mark *mark,
1463 u8 mode, u32 reqid, u8 proto,
1464 xfrm_address_t *daddr,
1465 xfrm_address_t *saddr, int create,
1466 unsigned short family);
1467 extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol);
1468 extern int xfrm_bundle_ok(struct xfrm_policy *pol, struct xfrm_dst *xdst,
1469 struct flowi *fl, int family, int strict);
1471 #ifdef CONFIG_XFRM_MIGRATE
1472 extern int km_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
1473 struct xfrm_migrate *m, int num_bundles,
1474 struct xfrm_kmaddress *k);
1475 extern struct xfrm_state * xfrm_migrate_state_find(struct xfrm_migrate *m);
1476 extern struct xfrm_state * xfrm_state_migrate(struct xfrm_state *x,
1477 struct xfrm_migrate *m);
1478 extern int xfrm_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
1479 struct xfrm_migrate *m, int num_bundles,
1480 struct xfrm_kmaddress *k);
1483 extern int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
1484 extern void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 pid);
1485 extern int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
1487 extern void xfrm_input_init(void);
1488 extern int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq);
1490 extern void xfrm_probe_algs(void);
1491 extern int xfrm_count_auth_supported(void);
1492 extern int xfrm_count_enc_supported(void);
1493 extern struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx);
1494 extern struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx);
1495 extern struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id);
1496 extern struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id);
1497 extern struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id);
1498 extern struct xfrm_algo_desc *xfrm_aalg_get_byname(char *name, int probe);
1499 extern struct xfrm_algo_desc *xfrm_ealg_get_byname(char *name, int probe);
1500 extern struct xfrm_algo_desc *xfrm_calg_get_byname(char *name, int probe);
1501 extern struct xfrm_algo_desc *xfrm_aead_get_byname(char *name, int icv_len,
1506 typedef int (icv_update_fn_t)(struct hash_desc *, struct scatterlist *,
1509 static inline int xfrm_addr_cmp(xfrm_address_t *a, xfrm_address_t *b,
1515 return (__force u32)a->a4 - (__force u32)b->a4;
1517 return ipv6_addr_cmp((struct in6_addr *)a,
1518 (struct in6_addr *)b);
1522 static inline int xfrm_policy_id2dir(u32 index)
1528 static inline int xfrm_aevent_is_on(struct net *net)
1534 nlsk = rcu_dereference(net->xfrm.nlsk);
1536 ret = netlink_has_listeners(nlsk, XFRMNLGRP_AEVENTS);
1542 static inline int xfrm_alg_len(struct xfrm_algo *alg)
1544 return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
1547 static inline int xfrm_alg_auth_len(struct xfrm_algo_auth *alg)
1549 return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
1552 #ifdef CONFIG_XFRM_MIGRATE
1553 static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig)
1555 return kmemdup(orig, xfrm_alg_len(orig), GFP_KERNEL);
1558 static inline struct xfrm_algo_auth *xfrm_algo_auth_clone(struct xfrm_algo_auth *orig)
1560 return kmemdup(orig, xfrm_alg_auth_len(orig), GFP_KERNEL);
1563 static inline void xfrm_states_put(struct xfrm_state **states, int n)
1566 for (i = 0; i < n; i++)
1567 xfrm_state_put(*(states + i));
1570 static inline void xfrm_states_delete(struct xfrm_state **states, int n)
1573 for (i = 0; i < n; i++)
1574 xfrm_state_delete(*(states + i));
1579 static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb)
1581 return skb->sp->xvec[skb->sp->len - 1];
1585 static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m)
1587 if (attrs[XFRMA_MARK])
1588 memcpy(m, nla_data(attrs[XFRMA_MARK]), sizeof(m));
1595 static inline int xfrm_mark_put(struct sk_buff *skb, struct xfrm_mark *m)
1598 NLA_PUT(skb, XFRMA_MARK, sizeof(struct xfrm_mark), m);
1605 #endif /* _NET_XFRM_H */