X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Fnet%2Fxfrm.h;h=1913af67c43d8ef976f08dcaef307499b59e4e0b;hb=903788892ea0fc7fcaf7e8e5fac9a77379fc215b;hp=3434fdc7de37db524c065b0a21ca1f2bcae953ab;hpb=f04e7e8d7f175c05bbde3ae748bf2541da53721d;p=safe%2Fjmp%2Flinux-2.6

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 3434fdc..1913af6 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -12,6 +12,7 @@
 #include <linux/in6.h>
 #include <linux/mutex.h>
 #include <linux/audit.h>
+#include <linux/slab.h>
 
 #include <net/sock.h>
 #include <net/dst.h>
@@ -19,6 +20,13 @@
 #include <net/route.h>
 #include <net/ipv6.h>
 #include <net/ip6_fib.h>
+#include <net/flow.h>
+
+#include <linux/interrupt.h>
+
+#ifdef CONFIG_XFRM_STATISTICS
+#include <net/snmp.h>
+#endif
 
 #define XFRM_PROTO_ESP		50
 #define XFRM_PROTO_AH		51
@@ -34,11 +42,15 @@
 #define MODULE_ALIAS_XFRM_TYPE(family, proto) \
 	MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto))
 
-extern struct sock *xfrm_nl;
-extern u32 sysctl_xfrm_aevent_etime;
-extern u32 sysctl_xfrm_aevent_rseqth;
-extern int sysctl_xfrm_larval_drop;
-extern u32 sysctl_xfrm_acq_expires;
+#ifdef CONFIG_XFRM_STATISTICS
+#define XFRM_INC_STATS(net, field)	SNMP_INC_STATS((net)->mib.xfrm_statistics, field)
+#define XFRM_INC_STATS_BH(net, field)	SNMP_INC_STATS_BH((net)->mib.xfrm_statistics, field)
+#define XFRM_INC_STATS_USER(net, field)	SNMP_INC_STATS_USER((net)-mib.xfrm_statistics, field)
+#else
+#define XFRM_INC_STATS(net, field)	((void)(net))
+#define XFRM_INC_STATS_BH(net, field)	((void)(net))
+#define XFRM_INC_STATS_USER(net, field)	((void)(net))
+#endif
 
 extern struct mutex xfrm_cfg_mutex;
 
@@ -103,11 +115,25 @@ extern struct mutex xfrm_cfg_mutex;
       metrics. Plus, it will be made via sk->sk_dst_cache. Solved.
  */
 
+struct xfrm_state_walk {
+	struct list_head	all;
+	u8			state;
+	union {
+		u8		dying;
+		u8		proto;
+	};
+	u32			seq;
+};
+
 /* Full description of state of transformer. */
-struct xfrm_state
-{
-	/* Note: bydst is re-used during gc */
-	struct hlist_node	bydst;
+struct xfrm_state {
+#ifdef CONFIG_NET_NS
+	struct net		*xs_net;
+#endif
+	union {
+		struct hlist_node	gclist;
+		struct hlist_node	bydst;
+	};
 	struct hlist_node	bysrc;
 	struct hlist_node	byspi;
 
@@ -116,15 +142,12 @@ struct xfrm_state
 
 	struct xfrm_id		id;
 	struct xfrm_selector	sel;
+	struct xfrm_mark	mark;
 
 	u32			genid;
 
-	/* Key manger bits */
-	struct {
-		u8		state;
-		u8		dying;
-		u32		seq;
-	} km;
+	/* Key manager bits */
+	struct xfrm_state_walk	km;
 
 	/* Parameters of this state. */
 	struct {
@@ -142,9 +165,10 @@ struct xfrm_state
 	struct xfrm_lifetime_cfg lft;
 
 	/* Data for transformer */
-	struct xfrm_algo	*aalg;
+	struct xfrm_algo_auth	*aalg;
 	struct xfrm_algo	*ealg;
 	struct xfrm_algo	*calg;
+	struct xfrm_algo_aead	*aead;
 
 	/* Data for encapsulator */
 	struct xfrm_encap_tmpl	*encap;
@@ -180,15 +204,16 @@ struct xfrm_state
 	struct xfrm_stats	stats;
 
 	struct xfrm_lifetime_cur curlft;
-	struct timer_list	timer;
+	struct tasklet_hrtimer	mtimer;
 
 	/* Last used time */
-	u64			lastused;
+	unsigned long		lastused;
 
 	/* Reference to data common to all the instances of this
 	 * transformer. */
-	struct xfrm_type	*type;
+	const struct xfrm_type	*type;
 	struct xfrm_mode	*inner_mode;
+	struct xfrm_mode	*inner_mode_iaf;
 	struct xfrm_mode	*outer_mode;
 
 	/* Security context */
@@ -199,6 +224,11 @@ struct xfrm_state
 	void			*data;
 };
 
+static inline struct net *xs_net(struct xfrm_state *x)
+{
+	return read_pnet(&x->xs_net);
+}
+
 /* xflags - make enum if more show up */
 #define XFRM_TIME_DEFER	1
 
@@ -212,8 +242,7 @@ enum {
 };
 
 /* callback structure passed from either netlink or pfkey */
-struct km_event
-{
+struct km_event {
 	union {
 		u32 hard;
 		u32 proto;
@@ -225,24 +254,30 @@ struct km_event
 	u32	seq;
 	u32	pid;
 	u32	event;
+	struct net *net;
 };
 
+struct net_device;
 struct xfrm_type;
 struct xfrm_dst;
 struct xfrm_policy_afinfo {
 	unsigned short		family;
 	struct dst_ops		*dst_ops;
-	void			(*garbage_collect)(void);
-	int			(*dst_lookup)(struct xfrm_dst **dst, struct flowi *fl);
-	int			(*get_saddr)(xfrm_address_t *saddr, xfrm_address_t *daddr);
-	struct dst_entry	*(*find_bundle)(struct flowi *fl, struct xfrm_policy *policy);
-	int			(*bundle_create)(struct xfrm_policy *policy, 
-						 struct xfrm_state **xfrm, 
-						 int nx,
-						 struct flowi *fl, 
-						 struct dst_entry **dst_p);
+	void			(*garbage_collect)(struct net *net);
+	struct dst_entry	*(*dst_lookup)(struct net *net, int tos,
+					       xfrm_address_t *saddr,
+					       xfrm_address_t *daddr);
+	int			(*get_saddr)(struct net *net, xfrm_address_t *saddr, xfrm_address_t *daddr);
 	void			(*decode_session)(struct sk_buff *skb,
-						  struct flowi *fl);
+						  struct flowi *fl,
+						  int reverse);
+	int			(*get_tos)(struct flowi *fl);
+	int			(*init_path)(struct xfrm_dst *path,
+					     struct dst_entry *dst,
+					     int nfheader_len);
+	int			(*fill_dst)(struct xfrm_dst *xdst,
+					    struct net_device *dev,
+					    struct flowi *fl);
 };
 
 extern int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo);
@@ -257,8 +292,10 @@ extern int __xfrm_state_delete(struct xfrm_state *x);
 
 struct xfrm_state_afinfo {
 	unsigned int		family;
+	unsigned int		proto;
+	__be16			eth_proto;
 	struct module		*owner;
-	struct xfrm_type	*type_map[IPPROTO_MAX];
+	const struct xfrm_type	*type_map[IPPROTO_MAX];
 	struct xfrm_mode	*mode_map[XFRM_MODE_MAX];
 	int			(*init_flags)(struct xfrm_state *x);
 	void			(*init_tempsel)(struct xfrm_state *x, struct flowi *fl,
@@ -267,6 +304,12 @@ struct xfrm_state_afinfo {
 	int			(*tmpl_sort)(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n);
 	int			(*state_sort)(struct xfrm_state **dst, struct xfrm_state **src, int n);
 	int			(*output)(struct sk_buff *skb);
+	int			(*extract_input)(struct xfrm_state *x,
+						 struct sk_buff *skb);
+	int			(*extract_output)(struct xfrm_state *x,
+						  struct sk_buff *skb);
+	int			(*transport_finish)(struct sk_buff *skb,
+						    int async);
 };
 
 extern int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo);
@@ -274,12 +317,11 @@ extern int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo);
 
 extern void xfrm_state_delete_tunnel(struct xfrm_state *x);
 
-struct xfrm_type
-{
+struct xfrm_type {
 	char			*description;
 	struct module		*owner;
-	__u8			proto;
-	__u8			flags;
+	u8			proto;
+	u8			flags;
 #define XFRM_TYPE_NON_FRAGMENT	1
 #define XFRM_TYPE_REPLAY_PROT	2
 #define XFRM_TYPE_LOCAL_COADDR	4
@@ -295,10 +337,31 @@ struct xfrm_type
 	u32			(*get_mtu)(struct xfrm_state *, int size);
 };
 
-extern int xfrm_register_type(struct xfrm_type *type, unsigned short family);
-extern int xfrm_unregister_type(struct xfrm_type *type, unsigned short family);
+extern int xfrm_register_type(const struct xfrm_type *type, unsigned short family);
+extern int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family);
 
 struct xfrm_mode {
+	/*
+	 * Remove encapsulation header.
+	 *
+	 * The IP header will be moved over the top of the encapsulation
+	 * header.
+	 *
+	 * On entry, the transport header shall point to where the IP header
+	 * should be and the network header shall be set to where the IP
+	 * header currently is.  skb->data shall point to the start of the
+	 * payload.
+	 */
+	int (*input2)(struct xfrm_state *x, struct sk_buff *skb);
+
+	/*
+	 * This is the actual input entry point.
+	 *
+	 * For transport mode and equivalent this would be identical to
+	 * input2 (which does not need to be set).  While tunnel mode
+	 * and equivalent would set this to the tunnel encapsulation function
+	 * xfrm4_prepare_input that would in turn call input2.
+	 */
 	int (*input)(struct xfrm_state *x, struct sk_buff *skb);
 
 	/*
@@ -312,7 +375,18 @@ struct xfrm_mode {
 	 * header.  The value of the network header will always point
 	 * to the top IP header while skb->data will point to the payload.
 	 */
-	int (*output)(struct xfrm_state *x,struct sk_buff *skb);
+	int (*output2)(struct xfrm_state *x,struct sk_buff *skb);
+
+	/*
+	 * This is the actual output entry point.
+	 *
+	 * For transport mode and equivalent this would be identical to
+	 * output2 (which does not need to be set).  While tunnel mode
+	 * and equivalent would set this to a tunnel encapsulation function
+	 * (xfrm4_prepare_output or xfrm6_prepare_output) that would in turn
+	 * call output2.
+	 */
+	int (*output)(struct xfrm_state *x, struct sk_buff *skb);
 
 	struct xfrm_state_afinfo *afinfo;
 	struct module *owner;
@@ -328,8 +402,28 @@ enum {
 extern int xfrm_register_mode(struct xfrm_mode *mode, int family);
 extern int xfrm_unregister_mode(struct xfrm_mode *mode, int family);
 
-struct xfrm_tmpl
+static inline int xfrm_af2proto(unsigned int family)
+{
+	switch(family) {
+	case AF_INET:
+		return IPPROTO_IPIP;
+	case AF_INET6:
+		return IPPROTO_IPV6;
+	default:
+		return 0;
+	}
+}
+
+static inline struct xfrm_mode *xfrm_ip2inner_mode(struct xfrm_state *x, int ipproto)
 {
+	if ((ipproto == IPPROTO_IPIP && x->props.family == AF_INET) ||
+	    (ipproto == IPPROTO_IPV6 && x->props.family == AF_INET6))
+		return x->inner_mode;
+	else
+		return x->inner_mode_iaf;
+}
+
+struct xfrm_tmpl {
 /* id in template is interpreted as:
  * daddr - destination of tunnel, may be zero for transport mode.
  * spi   - zero to acquire spi. Not zero if spi is static, then
@@ -343,28 +437,43 @@ struct xfrm_tmpl
 
 	unsigned short		encap_family;
 
-	__u32			reqid;
+	u32			reqid;
 
 /* Mode: transport, tunnel etc. */
-	__u8			mode;
+	u8			mode;
 
 /* Sharing mode: unique, this session only, this user only etc. */
-	__u8			share;
+	u8			share;
 
 /* May skip this transfomration if no SA is found */
-	__u8			optional;
+	u8			optional;
+
+/* Skip aalgos/ealgos/calgos checks. */
+	u8			allalgs;
 
 /* Bit mask of algos allowed for acquisition */
-	__u32			aalgos;
-	__u32			ealgos;
-	__u32			calgos;
+	u32			aalgos;
+	u32			ealgos;
+	u32			calgos;
 };
 
 #define XFRM_MAX_DEPTH		6
 
-struct xfrm_policy
-{
-	struct xfrm_policy	*next;
+struct xfrm_policy_walk_entry {
+	struct list_head	all;
+	u8			dead;
+};
+
+struct xfrm_policy_walk {
+	struct xfrm_policy_walk_entry walk;
+	u8 type;
+	u32 seq;
+};
+
+struct xfrm_policy {
+#ifdef CONFIG_NET_NS
+	struct net		*xp_net;
+#endif
 	struct hlist_node	bydst;
 	struct hlist_node	byidx;
 
@@ -373,23 +482,36 @@ struct xfrm_policy
 	atomic_t		refcnt;
 	struct timer_list	timer;
 
+	struct flow_cache_object flo;
+	atomic_t		genid;
 	u32			priority;
 	u32			index;
+	struct xfrm_mark	mark;
 	struct xfrm_selector	selector;
 	struct xfrm_lifetime_cfg lft;
 	struct xfrm_lifetime_cur curlft;
-	struct dst_entry       *bundles;
-	u16			family;
+	struct xfrm_policy_walk_entry walk;
 	u8			type;
 	u8			action;
 	u8			flags;
-	u8			dead;
 	u8			xfrm_nr;
-	/* XXX 1 byte hole, try to pack */
+	u16			family;
 	struct xfrm_sec_ctx	*security;
 	struct xfrm_tmpl       	xfrm_vec[XFRM_MAX_DEPTH];
 };
 
+static inline struct net *xp_net(struct xfrm_policy *xp)
+{
+	return read_pnet(&xp->xp_net);
+}
+
+struct xfrm_kmaddress {
+	xfrm_address_t          local;
+	xfrm_address_t          remote;
+	u32			reserved;
+	u16			family;
+};
+
 struct xfrm_migrate {
 	xfrm_address_t		old_daddr;
 	xfrm_address_t		old_saddr;
@@ -419,8 +541,7 @@ struct xfrm_migrate {
 /* default seq threshold size */
 #define XFRM_AE_SEQT_SIZE		2
 
-struct xfrm_mgr
-{
+struct xfrm_mgr {
 	struct list_head	list;
 	char			*id;
 	int			(*notify)(struct xfrm_state *x, struct km_event *c);
@@ -428,15 +549,13 @@ struct xfrm_mgr
 	struct xfrm_policy	*(*compile_policy)(struct sock *sk, int opt, u8 *data, int len, int *dir);
 	int			(*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
 	int			(*notify_policy)(struct xfrm_policy *x, int dir, struct km_event *c);
-	int			(*report)(u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
-	int			(*migrate)(struct xfrm_selector *sel, u8 dir, u8 type, struct xfrm_migrate *m, int num_bundles);
+	int			(*report)(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
+	int			(*migrate)(struct xfrm_selector *sel, u8 dir, u8 type, struct xfrm_migrate *m, int num_bundles, struct xfrm_kmaddress *k);
 };
 
 extern int xfrm_register_km(struct xfrm_mgr *km);
 extern int xfrm_unregister_km(struct xfrm_mgr *km);
 
-extern unsigned int xfrm_policy_count[XFRM_POLICY_MAX*2];
-
 /*
  * This structure is used for the duration where packets are being
  * transformed by IPsec.  As soon as the packet leaves IPsec the
@@ -449,54 +568,158 @@ struct xfrm_skb_cb {
         } header;
 
         /* Sequence number for replay protection. */
-        u64 seq;
+	union {
+		u64 output;
+		__be32 input;
+	} seq;
 };
 
 #define XFRM_SKB_CB(__skb) ((struct xfrm_skb_cb *)&((__skb)->cb[0]))
 
+/*
+ * This structure is used by the afinfo prepare_input/prepare_output functions
+ * to transmit header information to the mode input/output functions.
+ */
+struct xfrm_mode_skb_cb {
+	union {
+		struct inet_skb_parm h4;
+		struct inet6_skb_parm h6;
+	} header;
+
+	/* Copied from header for IPv4, always set to zero and DF for IPv6. */
+	__be16 id;
+	__be16 frag_off;
+
+	/* IP header length (excluding options or extension headers). */
+	u8 ihl;
+
+	/* TOS for IPv4, class for IPv6. */
+	u8 tos;
+
+	/* TTL for IPv4, hop limitfor IPv6. */
+	u8 ttl;
+
+	/* Protocol for IPv4, NH for IPv6. */
+	u8 protocol;
+
+	/* Option length for IPv4, zero for IPv6. */
+	u8 optlen;
+
+	/* Used by IPv6 only, zero for IPv4. */
+	u8 flow_lbl[3];
+};
+
+#define XFRM_MODE_SKB_CB(__skb) ((struct xfrm_mode_skb_cb *)&((__skb)->cb[0]))
+
+/*
+ * This structure is used by the input processing to locate the SPI and
+ * related information.
+ */
+struct xfrm_spi_skb_cb {
+	union {
+		struct inet_skb_parm h4;
+		struct inet6_skb_parm h6;
+	} header;
+
+	unsigned int daddroff;
+	unsigned int family;
+};
+
+#define XFRM_SPI_SKB_CB(__skb) ((struct xfrm_spi_skb_cb *)&((__skb)->cb[0]))
+
 /* Audit Information */
-struct xfrm_audit
-{
-	u32	loginuid;
+struct xfrm_audit {
 	u32	secid;
+	uid_t	loginuid;
+	u32	sessionid;
 };
 
 #ifdef CONFIG_AUDITSYSCALL
-static inline struct audit_buffer *xfrm_audit_start(u32 auid, u32 sid)
+static inline struct audit_buffer *xfrm_audit_start(const char *op)
 {
 	struct audit_buffer *audit_buf = NULL;
-	char *secctx;
-	u32 secctx_len;
 
+	if (audit_enabled == 0)
+		return NULL;
 	audit_buf = audit_log_start(current->audit_context, GFP_ATOMIC,
-			      AUDIT_MAC_IPSEC_EVENT);
+				    AUDIT_MAC_IPSEC_EVENT);
 	if (audit_buf == NULL)
 		return NULL;
+	audit_log_format(audit_buf, "op=%s", op);
+	return audit_buf;
+}
 
-	audit_log_format(audit_buf, "auid=%u", auid);
+static inline void xfrm_audit_helper_usrinfo(uid_t auid, u32 ses, u32 secid,
+					     struct audit_buffer *audit_buf)
+{
+	char *secctx;
+	u32 secctx_len;
 
-	if (sid != 0 &&
-	    security_secid_to_secctx(sid, &secctx, &secctx_len) == 0) {
+	audit_log_format(audit_buf, " auid=%u ses=%u", auid, ses);
+	if (secid != 0 &&
+	    security_secid_to_secctx(secid, &secctx, &secctx_len) == 0) {
 		audit_log_format(audit_buf, " subj=%s", secctx);
 		security_release_secctx(secctx, secctx_len);
 	} else
 		audit_log_task_context(audit_buf);
-	return audit_buf;
 }
 
 extern void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
-				  u32 auid, u32 sid);
+				  u32 auid, u32 ses, u32 secid);
 extern void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
-				  u32 auid, u32 sid);
+				  u32 auid, u32 ses, u32 secid);
 extern void xfrm_audit_state_add(struct xfrm_state *x, int result,
-				 u32 auid, u32 sid);
+				 u32 auid, u32 ses, u32 secid);
 extern void xfrm_audit_state_delete(struct xfrm_state *x, int result,
-				    u32 auid, u32 sid);
+				    u32 auid, u32 ses, u32 secid);
+extern void xfrm_audit_state_replay_overflow(struct xfrm_state *x,
+					     struct sk_buff *skb);
+extern void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family);
+extern void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family,
+				      __be32 net_spi, __be32 net_seq);
+extern void xfrm_audit_state_icvfail(struct xfrm_state *x,
+				     struct sk_buff *skb, u8 proto);
 #else
-#define xfrm_audit_policy_add(x, r, a, s)	do { ; } while (0)
-#define xfrm_audit_policy_delete(x, r, a, s)	do { ; } while (0)
-#define xfrm_audit_state_add(x, r, a, s)	do { ; } while (0)
-#define xfrm_audit_state_delete(x, r, a, s)	do { ; } while (0)
+
+static inline void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
+				  u32 auid, u32 ses, u32 secid)
+{
+}
+
+static inline void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
+				  u32 auid, u32 ses, u32 secid)
+{
+}
+
+static inline void xfrm_audit_state_add(struct xfrm_state *x, int result,
+				 u32 auid, u32 ses, u32 secid)
+{
+}
+
+static inline void xfrm_audit_state_delete(struct xfrm_state *x, int result,
+				    u32 auid, u32 ses, u32 secid)
+{
+}
+
+static inline void xfrm_audit_state_replay_overflow(struct xfrm_state *x,
+					     struct sk_buff *skb)
+{
+}
+
+static inline void xfrm_audit_state_notfound_simple(struct sk_buff *skb,
+				      u16 family)
+{
+}
+
+static inline void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family,
+				      __be32 net_spi, __be32 net_seq)
+{
+}
+
+static inline void xfrm_audit_state_icvfail(struct xfrm_state *x,
+				     struct sk_buff *skb, u8 proto)
+{
+}
 #endif /* CONFIG_AUDITSYSCALL */
 
 static inline void xfrm_pol_hold(struct xfrm_policy *policy)
@@ -505,27 +728,20 @@ static inline void xfrm_pol_hold(struct xfrm_policy *policy)
 		atomic_inc(&policy->refcnt);
 }
 
-extern void __xfrm_policy_destroy(struct xfrm_policy *policy);
+extern void xfrm_policy_destroy(struct xfrm_policy *policy);
 
 static inline void xfrm_pol_put(struct xfrm_policy *policy)
 {
 	if (atomic_dec_and_test(&policy->refcnt))
-		__xfrm_policy_destroy(policy);
+		xfrm_policy_destroy(policy);
 }
 
-#ifdef CONFIG_XFRM_SUB_POLICY
 static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols)
 {
 	int i;
 	for (i = npols - 1; i >= 0; --i)
 		xfrm_pol_put(pols[i]);
 }
-#else
-static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols)
-{
-	xfrm_pol_put(pols[0]);
-}
-#endif
 
 extern void __xfrm_state_destroy(struct xfrm_state *);
 
@@ -552,7 +768,7 @@ static __inline__ int addr_match(void *token1, void *token2, int prefixlen)
 	int pdw;
 	int pbi;
 
-	pdw = prefixlen >> 5;	  /* num of whole __u32 in prefix */
+	pdw = prefixlen >> 5;	  /* num of whole u32 in prefix */
 	pbi = prefixlen &  0x1f;  /* num of bits in incomplete u32 in prefix */
 
 	if (pdw)
@@ -649,27 +865,32 @@ static inline int xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ct
  * bundles differing by session id. All the bundles grow from a parent
  * policy rule.
  */
-struct xfrm_dst
-{
+struct xfrm_dst {
 	union {
 		struct dst_entry	dst;
 		struct rtable		rt;
 		struct rt6_info		rt6;
 	} u;
 	struct dst_entry *route;
+	struct flow_cache_object flo;
+	struct xfrm_policy *pols[XFRM_POLICY_TYPE_MAX];
+	int num_pols, num_xfrms;
 #ifdef CONFIG_XFRM_SUB_POLICY
 	struct flowi *origin;
 	struct xfrm_selector *partner;
 #endif
-	u32 genid;
+	u32 xfrm_genid;
+	u32 policy_genid;
 	u32 route_mtu_cached;
 	u32 child_mtu_cached;
 	u32 route_cookie;
 	u32 path_cookie;
 };
 
+#ifdef CONFIG_XFRM
 static inline void xfrm_dst_destroy(struct xfrm_dst *xdst)
 {
+	xfrm_pols_put(xdst->pols, xdst->num_pols);
 	dst_release(xdst->route);
 	if (likely(xdst->u.dst.xfrm))
 		xfrm_state_put(xdst->u.dst.xfrm);
@@ -680,11 +901,11 @@ static inline void xfrm_dst_destroy(struct xfrm_dst *xdst)
 	xdst->partner = NULL;
 #endif
 }
+#endif
 
 extern void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev);
 
-struct sec_path
-{
+struct sec_path {
 	atomic_t		refcnt;
 	int			len;
 	struct xfrm_state	*xvec[XFRM_MAX_DEPTH];
@@ -757,17 +978,26 @@ xfrm_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x, unsigned short
 }
 
 #ifdef CONFIG_XFRM
-
 extern int __xfrm_policy_check(struct sock *, int dir, struct sk_buff *skb, unsigned short family);
 
-static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family)
+static inline int __xfrm_policy_check2(struct sock *sk, int dir,
+				       struct sk_buff *skb,
+				       unsigned int family, int reverse)
 {
+	struct net *net = dev_net(skb->dev);
+	int ndir = dir | (reverse ? XFRM_POLICY_MASK + 1 : 0);
+
 	if (sk && sk->sk_policy[XFRM_POLICY_IN])
-		return __xfrm_policy_check(sk, dir, skb, family);
+		return __xfrm_policy_check(sk, ndir, skb, family);
+
+	return	(!net->xfrm.policy_count[dir] && !skb->sp) ||
+		(skb_dst(skb)->flags & DST_NOPOLICY) ||
+		__xfrm_policy_check(sk, ndir, skb, family);
+}
 
-	return	(!xfrm_policy_count[dir] && !skb->sp) ||
-		(skb->dst->flags & DST_NOPOLICY) ||
-		__xfrm_policy_check(sk, dir, skb, family);
+static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family)
+{
+	return __xfrm_policy_check2(sk, dir, skb, family, 0);
 }
 
 static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb)
@@ -780,13 +1010,42 @@ static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *s
 	return xfrm_policy_check(sk, dir, skb, AF_INET6);
 }
 
-extern int xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, unsigned short family);
+static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir,
+					     struct sk_buff *skb)
+{
+	return __xfrm_policy_check2(sk, dir, skb, AF_INET, 1);
+}
+
+static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
+					     struct sk_buff *skb)
+{
+	return __xfrm_policy_check2(sk, dir, skb, AF_INET6, 1);
+}
+
+extern int __xfrm_decode_session(struct sk_buff *skb, struct flowi *fl,
+				 unsigned int family, int reverse);
+
+static inline int xfrm_decode_session(struct sk_buff *skb, struct flowi *fl,
+				      unsigned int family)
+{
+	return __xfrm_decode_session(skb, fl, family, 0);
+}
+
+static inline int xfrm_decode_session_reverse(struct sk_buff *skb,
+					      struct flowi *fl,
+					      unsigned int family)
+{
+	return __xfrm_decode_session(skb, fl, family, 1);
+}
+
 extern int __xfrm_route_forward(struct sk_buff *skb, unsigned short family);
 
 static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family)
 {
-	return	!xfrm_policy_count[XFRM_POLICY_OUT] ||
-		(skb->dst->flags & DST_NOXFRM) ||
+	struct net *net = dev_net(skb->dev);
+
+	return	!net->xfrm.policy_count[XFRM_POLICY_OUT] ||
+		(skb_dst(skb)->flags & DST_NOXFRM) ||
 		__xfrm_route_forward(skb, family);
 }
 
@@ -841,6 +1100,22 @@ static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *sk
 {
 	return 1;
 }
+static inline int xfrm_decode_session_reverse(struct sk_buff *skb,
+					      struct flowi *fl,
+					      unsigned int family)
+{
+	return -ENOSYS;
+}
+static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir,
+					     struct sk_buff *skb)
+{
+	return 1;
+}
+static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
+					     struct sk_buff *skb)
+{
+	return 1;
+}
 #endif
 
 static __inline__
@@ -867,6 +1142,23 @@ xfrm_address_t *xfrm_flowi_saddr(struct flowi *fl, unsigned short family)
 	return NULL;
 }
 
+static __inline__
+void xfrm_flowi_addr_get(struct flowi *fl,
+			 xfrm_address_t *saddr, xfrm_address_t *daddr,
+			 unsigned short family)
+{
+	switch(family) {
+	case AF_INET:
+		memcpy(&saddr->a4, &fl->fl4_src, sizeof(saddr->a4));
+		memcpy(&daddr->a4, &fl->fl4_dst, sizeof(daddr->a4));
+		break;
+	case AF_INET6:
+		ipv6_addr_copy((struct in6_addr *)&saddr->a6, &fl->fl6_src);
+		ipv6_addr_copy((struct in6_addr *)&daddr->a6, &fl->fl6_dst);
+		break;
+	}
+}
+
 static __inline__ int
 __xfrm4_state_addr_check(struct xfrm_state *x,
 			 xfrm_address_t *daddr, xfrm_address_t *saddr)
@@ -936,6 +1228,10 @@ static inline int xfrm_id_proto_match(u8 proto, u8 userproto)
 /*
  * xfrm algorithm information
  */
+struct xfrm_algo_aead_info {
+	u16 icv_truncbits;
+};
+
 struct xfrm_algo_auth_info {
 	u16 icv_truncbits;
 	u16 icv_fullbits;
@@ -955,6 +1251,7 @@ struct xfrm_algo_desc {
 	char *compat;
 	u8 available:1;
 	union {
+		struct xfrm_algo_aead_info aead;
 		struct xfrm_algo_auth_info auth;
 		struct xfrm_algo_encr_info encr;
 		struct xfrm_algo_comp_info comp;
@@ -965,7 +1262,7 @@ struct xfrm_algo_desc {
 /* XFRM tunnel handlers.  */
 struct xfrm_tunnel {
 	int (*handler)(struct sk_buff *skb);
-	int (*err_handler)(struct sk_buff *skb, __u32 info);
+	int (*err_handler)(struct sk_buff *skb, u32 info);
 
 	struct xfrm_tunnel *next;
 	int priority;
@@ -974,27 +1271,57 @@ struct xfrm_tunnel {
 struct xfrm6_tunnel {
 	int (*handler)(struct sk_buff *skb);
 	int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt,
-			   int type, int code, int offset, __be32 info);
+			   u8 type, u8 code, int offset, __be32 info);
 	struct xfrm6_tunnel *next;
 	int priority;
 };
 
 extern void xfrm_init(void);
-extern void xfrm4_init(void);
-extern void xfrm6_init(void);
-extern void xfrm6_fini(void);
-extern void xfrm_state_init(void);
+extern void xfrm4_init(int rt_hash_size);
+extern int xfrm_state_init(struct net *net);
+extern void xfrm_state_fini(struct net *net);
 extern void xfrm4_state_init(void);
-extern void xfrm6_state_init(void);
+#ifdef CONFIG_XFRM
+extern int xfrm6_init(void);
+extern void xfrm6_fini(void);
+extern int xfrm6_state_init(void);
 extern void xfrm6_state_fini(void);
+#else
+static inline int xfrm6_init(void)
+{
+	return 0;
+}
+static inline void xfrm6_fini(void)
+{
+	;
+}
+#endif
+
+#ifdef CONFIG_XFRM_STATISTICS
+extern int xfrm_proc_init(struct net *net);
+extern void xfrm_proc_fini(struct net *net);
+#endif
 
-extern int xfrm_state_walk(u8 proto, int (*func)(struct xfrm_state *, int, void*), void *);
-extern struct xfrm_state *xfrm_state_alloc(void);
+extern int xfrm_sysctl_init(struct net *net);
+#ifdef CONFIG_SYSCTL
+extern void xfrm_sysctl_fini(struct net *net);
+#else
+static inline void xfrm_sysctl_fini(struct net *net)
+{
+}
+#endif
+
+extern void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto);
+extern int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk,
+			   int (*func)(struct xfrm_state *, int, void*), void *);
+extern void xfrm_state_walk_done(struct xfrm_state_walk *walk);
+extern struct xfrm_state *xfrm_state_alloc(struct net *net);
 extern struct xfrm_state *xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr, 
 					  struct flowi *fl, struct xfrm_tmpl *tmpl,
 					  struct xfrm_policy *pol, int *err,
 					  unsigned short family);
-extern struct xfrm_state * xfrm_stateonly_find(xfrm_address_t *daddr,
+extern struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark,
+					       xfrm_address_t *daddr,
 					       xfrm_address_t *saddr,
 					       unsigned short family,
 					       u8 mode, u8 proto, u32 reqid);
@@ -1002,8 +1329,14 @@ extern int xfrm_state_check_expire(struct xfrm_state *x);
 extern void xfrm_state_insert(struct xfrm_state *x);
 extern int xfrm_state_add(struct xfrm_state *x);
 extern int xfrm_state_update(struct xfrm_state *x);
-extern struct xfrm_state *xfrm_state_lookup(xfrm_address_t *daddr, __be32 spi, u8 proto, unsigned short family);
-extern struct xfrm_state *xfrm_state_lookup_byaddr(xfrm_address_t *daddr, xfrm_address_t *saddr, u8 proto, unsigned short family);
+extern struct xfrm_state *xfrm_state_lookup(struct net *net, u32 mark,
+					    xfrm_address_t *daddr, __be32 spi,
+					    u8 proto, unsigned short family);
+extern struct xfrm_state *xfrm_state_lookup_byaddr(struct net *net, u32 mark,
+						   xfrm_address_t *daddr,
+						   xfrm_address_t *saddr,
+						   u8 proto,
+						   unsigned short family);
 #ifdef CONFIG_XFRM_SUB_POLICY
 extern int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src,
 			  int n, unsigned short family);
@@ -1040,19 +1373,30 @@ struct xfrmk_spdinfo {
 	u32 spdhmcnt;
 };
 
-extern struct xfrm_state *xfrm_find_acq_byseq(u32 seq);
+extern struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark,
+					      u32 seq);
 extern int xfrm_state_delete(struct xfrm_state *x);
-extern int xfrm_state_flush(u8 proto, struct xfrm_audit *audit_info);
-extern void xfrm_sad_getinfo(struct xfrmk_sadinfo *si);
-extern void xfrm_spd_getinfo(struct xfrmk_spdinfo *si);
-extern int xfrm_replay_check(struct xfrm_state *x, __be32 seq);
+extern int xfrm_state_flush(struct net *net, u8 proto, struct xfrm_audit *audit_info);
+extern void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si);
+extern void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si);
+extern int xfrm_replay_check(struct xfrm_state *x,
+			     struct sk_buff *skb, __be32 seq);
 extern void xfrm_replay_advance(struct xfrm_state *x, __be32 seq);
 extern void xfrm_replay_notify(struct xfrm_state *x, int event);
 extern int xfrm_state_mtu(struct xfrm_state *x, int mtu);
 extern int xfrm_init_state(struct xfrm_state *x);
+extern int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb);
+extern int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi,
+		      int encap_type);
+extern int xfrm_input_resume(struct sk_buff *skb, int nexthdr);
+extern int xfrm_output_resume(struct sk_buff *skb, int err);
 extern int xfrm_output(struct sk_buff *skb);
+extern int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb);
+extern int xfrm4_extract_header(struct sk_buff *skb);
+extern int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb);
 extern int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi,
 			   int encap_type);
+extern int xfrm4_transport_finish(struct sk_buff *skb, int async);
 extern int xfrm4_rcv(struct sk_buff *skb);
 
 static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
@@ -1060,18 +1404,25 @@ static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
 	return xfrm4_rcv_encap(skb, nexthdr, spi, 0);
 }
 
+extern int xfrm4_extract_output(struct xfrm_state *x, struct sk_buff *skb);
+extern int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb);
 extern int xfrm4_output(struct sk_buff *skb);
 extern int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family);
 extern int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family);
+extern int xfrm6_extract_header(struct sk_buff *skb);
+extern int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb);
 extern int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi);
+extern int xfrm6_transport_finish(struct sk_buff *skb, int async);
 extern int xfrm6_rcv(struct sk_buff *skb);
 extern int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
 			    xfrm_address_t *saddr, u8 proto);
 extern int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family);
 extern int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family);
-extern __be32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr);
-extern void xfrm6_tunnel_free_spi(xfrm_address_t *saddr);
-extern __be32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr);
+extern __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr);
+extern void xfrm6_tunnel_free_spi(struct net *net, xfrm_address_t *saddr);
+extern __be32 xfrm6_tunnel_spi_lookup(struct net *net, xfrm_address_t *saddr);
+extern int xfrm6_extract_output(struct xfrm_state *x, struct sk_buff *skb);
+extern int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb);
 extern int xfrm6_output(struct sk_buff *skb);
 extern int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
 				 u8 **prevhdr);
@@ -1079,7 +1430,6 @@ extern int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
 #ifdef CONFIG_XFRM
 extern int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb);
 extern int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen);
-extern int xfrm_dst_lookup(struct xfrm_dst **dst, struct flowi *fl, unsigned short family);
 #else
 static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen)
 {
@@ -1092,47 +1442,48 @@ static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb)
  	kfree_skb(skb);
 	return 0;
 }
-
-static inline int xfrm_dst_lookup(struct xfrm_dst **dst, struct flowi *fl, unsigned short family)
-{
-	return -EINVAL;
-} 
 #endif
 
-struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp);
-extern int xfrm_policy_walk(u8 type, int (*func)(struct xfrm_policy *, int, int, void*), void *);
+struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp);
+
+extern void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type);
+extern int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk,
+	int (*func)(struct xfrm_policy *, int, int, void*), void *);
+extern void xfrm_policy_walk_done(struct xfrm_policy_walk *walk);
 int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);
-struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
+struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark,
+					  u8 type, int dir,
 					  struct xfrm_selector *sel,
 					  struct xfrm_sec_ctx *ctx, int delete,
 					  int *err);
-struct xfrm_policy *xfrm_policy_byid(u8, int dir, u32 id, int delete, int *err);
-int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info);
+struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u8, int dir, u32 id, int delete, int *err);
+int xfrm_policy_flush(struct net *net, u8 type, struct xfrm_audit *audit_info);
 u32 xfrm_get_acqseq(void);
 extern int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi);
-struct xfrm_state * xfrm_find_acq(u8 mode, u32 reqid, u8 proto,
-				  xfrm_address_t *daddr, xfrm_address_t *saddr,
-				  int create, unsigned short family);
-extern int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info);
+struct xfrm_state *xfrm_find_acq(struct net *net, struct xfrm_mark *mark,
+				 u8 mode, u32 reqid, u8 proto,
+				 xfrm_address_t *daddr,
+				 xfrm_address_t *saddr, int create,
+				 unsigned short family);
 extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol);
 extern int xfrm_bundle_ok(struct xfrm_policy *pol, struct xfrm_dst *xdst,
 			  struct flowi *fl, int family, int strict);
-extern void xfrm_init_pmtu(struct dst_entry *dst);
 
 #ifdef CONFIG_XFRM_MIGRATE
 extern int km_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
-		      struct xfrm_migrate *m, int num_bundles);
+		      struct xfrm_migrate *m, int num_bundles,
+		      struct xfrm_kmaddress *k);
 extern struct xfrm_state * xfrm_migrate_state_find(struct xfrm_migrate *m);
 extern struct xfrm_state * xfrm_state_migrate(struct xfrm_state *x,
 					      struct xfrm_migrate *m);
 extern int xfrm_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
-			struct xfrm_migrate *m, int num_bundles);
+			struct xfrm_migrate *m, int num_bundles,
+			struct xfrm_kmaddress *k);
 #endif
 
-extern wait_queue_head_t km_waitq;
 extern int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
 extern void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 pid);
-extern int km_report(u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
+extern int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
 
 extern void xfrm_input_init(void);
 extern int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq);
@@ -1148,22 +1499,21 @@ extern struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id);
 extern struct xfrm_algo_desc *xfrm_aalg_get_byname(char *name, int probe);
 extern struct xfrm_algo_desc *xfrm_ealg_get_byname(char *name, int probe);
 extern struct xfrm_algo_desc *xfrm_calg_get_byname(char *name, int probe);
+extern struct xfrm_algo_desc *xfrm_aead_get_byname(char *name, int icv_len,
+						   int probe);
 
 struct hash_desc;
 struct scatterlist;
 typedef int (icv_update_fn_t)(struct hash_desc *, struct scatterlist *,
 			      unsigned int);
 
-extern int skb_icv_walk(const struct sk_buff *skb, struct hash_desc *tfm,
-			int offset, int len, icv_update_fn_t icv_update);
-
 static inline int xfrm_addr_cmp(xfrm_address_t *a, xfrm_address_t *b,
 				int family)
 {
 	switch (family) {
 	default:
 	case AF_INET:
-		return (__force __u32)a->a4 - (__force __u32)b->a4;
+		return (__force u32)a->a4 - (__force u32)b->a4;
 	case AF_INET6:
 		return ipv6_addr_cmp((struct in6_addr *)a,
 				     (struct in6_addr *)b);
@@ -1175,30 +1525,42 @@ static inline int xfrm_policy_id2dir(u32 index)
 	return index & 7;
 }
 
-static inline int xfrm_aevent_is_on(void)
+#ifdef CONFIG_XFRM
+static inline int xfrm_aevent_is_on(struct net *net)
 {
 	struct sock *nlsk;
 	int ret = 0;
 
 	rcu_read_lock();
-	nlsk = rcu_dereference(xfrm_nl);
+	nlsk = rcu_dereference(net->xfrm.nlsk);
 	if (nlsk)
 		ret = netlink_has_listeners(nlsk, XFRMNLGRP_AEVENTS);
 	rcu_read_unlock();
 	return ret;
 }
+#endif
 
 static inline int xfrm_alg_len(struct xfrm_algo *alg)
 {
 	return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
 }
 
+static inline int xfrm_alg_auth_len(struct xfrm_algo_auth *alg)
+{
+	return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
+}
+
 #ifdef CONFIG_XFRM_MIGRATE
 static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig)
 {
 	return kmemdup(orig, xfrm_alg_len(orig), GFP_KERNEL);
 }
 
+static inline struct xfrm_algo_auth *xfrm_algo_auth_clone(struct xfrm_algo_auth *orig)
+{
+	return kmemdup(orig, xfrm_alg_auth_len(orig), GFP_KERNEL);
+}
+
 static inline void xfrm_states_put(struct xfrm_state **states, int n)
 {
 	int i;
@@ -1214,4 +1576,31 @@ static inline void xfrm_states_delete(struct xfrm_state **states, int n)
 }
 #endif
 
+#ifdef CONFIG_XFRM
+static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb)
+{
+	return skb->sp->xvec[skb->sp->len - 1];
+}
+#endif
+
+static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m)
+{
+	if (attrs[XFRMA_MARK])
+		memcpy(m, nla_data(attrs[XFRMA_MARK]), sizeof(m));
+	else
+		m->v = m->m = 0;
+
+	return m->v & m->m;
+}
+
+static inline int xfrm_mark_put(struct sk_buff *skb, struct xfrm_mark *m)
+{
+	if (m->m | m->v)
+		NLA_PUT(skb, XFRMA_MARK, sizeof(struct xfrm_mark), m);
+	return 0;
+
+nla_put_failure:
+	return -1;
+}
+
 #endif	/* _NET_XFRM_H */