1 files changed, 129 insertions, 84 deletions

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index b9f385da758e..42a8c32a10e2 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -36,6 +36,7 @@
 #define XFRM_PROTO_ROUTING      IPPROTO_ROUTING
 #define XFRM_PROTO_DSTOPTS      IPPROTO_DSTOPTS
 
+#define XFRM_ALIGN4(len)        (((len) + 3) & ~3)
 #define XFRM_ALIGN8(len)        (((len) + 7) & ~7)
 #define MODULE_ALIAS_XFRM_MODE(family, encap) \
         MODULE_ALIAS("xfrm-mode-" __stringify(family) "-" __stringify(encap))
@@ -185,9 +186,14 @@ struct xfrm_state {
 
         /* State for replay detection */
         struct xfrm_replay_state replay;
+        struct xfrm_replay_state_esn *replay_esn;
 
         /* Replay detection state at the time we sent the last notification */
         struct xfrm_replay_state preplay;
+        struct xfrm_replay_state_esn *preplay_esn;
+
+        /* The functions for replay detection. */
+        struct xfrm_replay      *repl;
 
         /* internal flag that only holds state for delayed aevent at the
          * moment
@@ -258,6 +264,15 @@ struct km_event {
         struct net *net;
 };
 
+struct xfrm_replay {
+        void    (*advance)(struct xfrm_state *x, __be32 net_seq);
+        int     (*check)(struct xfrm_state *x,
+                         struct sk_buff *skb,
+                         __be32 net_seq);
+        void    (*notify)(struct xfrm_state *x, int event);
+        int     (*overflow)(struct xfrm_state *x, struct sk_buff *skb);
+};
+
 struct net_device;
 struct xfrm_type;
 struct xfrm_dst;
@@ -266,25 +281,26 @@ struct xfrm_policy_afinfo {
         struct dst_ops          *dst_ops;
         void                    (*garbage_collect)(struct net *net);
         struct dst_entry        *(*dst_lookup)(struct net *net, int tos,
-                                               xfrm_address_t *saddr,
-                                               xfrm_address_t *daddr);
+                                               const xfrm_address_t *saddr,
+                                               const 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,
                                                   int reverse);
-        int                     (*get_tos)(struct flowi *fl);
+        int                     (*get_tos)(const 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);
+                                            const struct flowi *fl);
+        struct dst_entry        *(*blackhole_route)(struct net *net, struct dst_entry *orig);
 };
 
 extern int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo);
 extern int xfrm_policy_unregister_afinfo(struct xfrm_policy_afinfo *afinfo);
-extern void km_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c);
-extern void km_state_notify(struct xfrm_state *x, struct km_event *c);
+extern void km_policy_notify(struct xfrm_policy *xp, int dir, const struct km_event *c);
+extern void km_state_notify(struct xfrm_state *x, const struct km_event *c);
 
 struct xfrm_tmpl;
 extern int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol);
@@ -299,9 +315,12 @@ struct xfrm_state_afinfo {
         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_selector *sel, struct flowi *fl);
-        void                    (*init_temprop)(struct xfrm_state *x, struct xfrm_tmpl *tmpl,
-                                                xfrm_address_t *daddr, xfrm_address_t *saddr);
+        void                    (*init_tempsel)(struct xfrm_selector *sel,
+                                                const struct flowi *fl);
+        void                    (*init_temprop)(struct xfrm_state *x,
+                                                const struct xfrm_tmpl *tmpl,
+                                                const xfrm_address_t *daddr,
+                                                const xfrm_address_t *saddr);
         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);
@@ -332,7 +351,8 @@ struct xfrm_type {
         void                    (*destructor)(struct xfrm_state *);
         int                     (*input)(struct xfrm_state *, struct sk_buff *skb);
         int                     (*output)(struct xfrm_state *, struct sk_buff *pskb);
-        int                     (*reject)(struct xfrm_state *, struct sk_buff *, struct flowi *);
+        int                     (*reject)(struct xfrm_state *, struct sk_buff *,
+                                          const struct flowi *);
         int                     (*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **);
         /* Estimate maximal size of result of transformation of a dgram */
         u32                     (*get_mtu)(struct xfrm_state *, int size);
@@ -501,7 +521,7 @@ struct xfrm_policy {
         struct xfrm_tmpl        xfrm_vec[XFRM_MAX_DEPTH];
 };
 
-static inline struct net *xp_net(struct xfrm_policy *xp)
+static inline struct net *xp_net(const struct xfrm_policy *xp)
 {
         return read_pnet(&xp->xp_net);
 }
@@ -545,13 +565,17 @@ struct xfrm_migrate {
 struct xfrm_mgr {
         struct list_head        list;
         char                    *id;
-        int                     (*notify)(struct xfrm_state *x, struct km_event *c);
+        int                     (*notify)(struct xfrm_state *x, const struct km_event *c);
         int                     (*acquire)(struct xfrm_state *x, struct xfrm_tmpl *, struct xfrm_policy *xp, int dir);
         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                     (*notify_policy)(struct xfrm_policy *x, int dir, const struct km_event *c);
         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);
+        int                     (*migrate)(const struct xfrm_selector *sel,
+                                           u8 dir, u8 type,
+                                           const struct xfrm_migrate *m,
+                                           int num_bundles,
+                                           const struct xfrm_kmaddress *k);
 };
 
 extern int xfrm_register_km(struct xfrm_mgr *km);
@@ -570,8 +594,14 @@ struct xfrm_skb_cb {
 
         /* Sequence number for replay protection. */
         union {
-                u64 output;
-                __be32 input;
+                struct {
+                        __u32 low;
+                        __u32 hi;
+                } output;
+                struct {
+                        __be32 low;
+                        __be32 hi;
+                } input;
         } seq;
 };
 
@@ -675,6 +705,8 @@ extern void xfrm_audit_state_delete(struct xfrm_state *x, int result,
                                     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_replay(struct xfrm_state *x,
+                                    struct sk_buff *skb, __be32 net_seq);
 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);
@@ -707,6 +739,11 @@ static inline void xfrm_audit_state_replay_overflow(struct xfrm_state *x,
 {
 }
 
+static inline void xfrm_audit_state_replay(struct xfrm_state *x,
+                                           struct sk_buff *skb, __be32 net_seq)
+{
+}
+
 static inline void xfrm_audit_state_notfound_simple(struct sk_buff *skb,
                                       u16 family)
 {
@@ -762,10 +799,11 @@ static inline void xfrm_state_hold(struct xfrm_state *x)
         atomic_inc(&x->refcnt);
 }
 
-static __inline__ int addr_match(void *token1, void *token2, int prefixlen)
+static inline bool addr_match(const void *token1, const void *token2,
+                              int prefixlen)
 {
-        __be32 *a1 = token1;
-        __be32 *a2 = token2;
+        const __be32 *a1 = token1;
+        const __be32 *a2 = token2;
         int pdw;
         int pbi;
 
@@ -774,7 +812,7 @@ static __inline__ int addr_match(void *token1, void *token2, int prefixlen)
 
         if (pdw)
                 if (memcmp(a1, a2, pdw << 2))
-                        return 0;
+                        return false;
 
         if (pbi) {
                 __be32 mask;
@@ -782,32 +820,32 @@ static __inline__ int addr_match(void *token1, void *token2, int prefixlen)
                 mask = htonl((0xffffffff) << (32 - pbi));
 
                 if ((a1[pdw] ^ a2[pdw]) & mask)
-                        return 0;
+                        return false;
         }
 
-        return 1;
+        return true;
 }
 
 static __inline__
-__be16 xfrm_flowi_sport(struct flowi *fl)
+__be16 xfrm_flowi_sport(const struct flowi *fl, const union flowi_uli *uli)
 {
         __be16 port;
-        switch(fl->proto) {
+        switch(fl->flowi_proto) {
         case IPPROTO_TCP:
         case IPPROTO_UDP:
         case IPPROTO_UDPLITE:
         case IPPROTO_SCTP:
-                port = fl->fl_ip_sport;
+                port = uli->ports.sport;
                 break;
         case IPPROTO_ICMP:
         case IPPROTO_ICMPV6:
-                port = htons(fl->fl_icmp_type);
+                port = htons(uli->icmpt.type);
                 break;
         case IPPROTO_MH:
-                port = htons(fl->fl_mh_type);
+                port = htons(uli->mht.type);
                 break;
         case IPPROTO_GRE:
-                port = htons(ntohl(fl->fl_gre_key) >> 16);
+                port = htons(ntohl(uli->gre_key) >> 16);
                 break;
         default:
                 port = 0;       /*XXX*/
@@ -816,22 +854,22 @@ __be16 xfrm_flowi_sport(struct flowi *fl)
 }
 
 static __inline__
-__be16 xfrm_flowi_dport(struct flowi *fl)
+__be16 xfrm_flowi_dport(const struct flowi *fl, const union flowi_uli *uli)
 {
         __be16 port;
-        switch(fl->proto) {
+        switch(fl->flowi_proto) {
         case IPPROTO_TCP:
         case IPPROTO_UDP:
         case IPPROTO_UDPLITE:
         case IPPROTO_SCTP:
-                port = fl->fl_ip_dport;
+                port = uli->ports.dport;
                 break;
         case IPPROTO_ICMP:
         case IPPROTO_ICMPV6:
-                port = htons(fl->fl_icmp_code);
+                port = htons(uli->icmpt.code);
                 break;
         case IPPROTO_GRE:
-                port = htons(ntohl(fl->fl_gre_key) & 0xffff);
+                port = htons(ntohl(uli->gre_key) & 0xffff);
                 break;
         default:
                 port = 0;       /*XXX*/
@@ -839,7 +877,8 @@ __be16 xfrm_flowi_dport(struct flowi *fl)
         return port;
 }
 
-extern int xfrm_selector_match(struct xfrm_selector *sel, struct flowi *fl,
+extern int xfrm_selector_match(const struct xfrm_selector *sel,
+                               const struct flowi *fl,
                                unsigned short family);
 
 #ifdef CONFIG_SECURITY_NETWORK_XFRM
@@ -947,7 +986,7 @@ secpath_reset(struct sk_buff *skb)
 }
 
 static inline int
-xfrm_addr_any(xfrm_address_t *addr, unsigned short family)
+xfrm_addr_any(const xfrm_address_t *addr, unsigned short family)
 {
         switch (family) {
         case AF_INET:
@@ -959,21 +998,21 @@ xfrm_addr_any(xfrm_address_t *addr, unsigned short family)
 }
 
 static inline int
-__xfrm4_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x)
+__xfrm4_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x)
 {
         return  (tmpl->saddr.a4 &&
                  tmpl->saddr.a4 != x->props.saddr.a4);
 }
 
 static inline int
-__xfrm6_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x)
+__xfrm6_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x)
 {
         return  (!ipv6_addr_any((struct in6_addr*)&tmpl->saddr) &&
                  ipv6_addr_cmp((struct in6_addr *)&tmpl->saddr, (struct in6_addr*)&x->props.saddr));
 }
 
 static inline int
-xfrm_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x, unsigned short family)
+xfrm_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x, unsigned short family)
 {
         switch (family) {
         case AF_INET:
@@ -1126,49 +1165,49 @@ static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
 #endif
 
 static __inline__
-xfrm_address_t *xfrm_flowi_daddr(struct flowi *fl, unsigned short family)
+xfrm_address_t *xfrm_flowi_daddr(const struct flowi *fl, unsigned short family)
 {
         switch (family){
         case AF_INET:
-                return (xfrm_address_t *)&fl->fl4_dst;
+                return (xfrm_address_t *)&fl->u.ip4.daddr;
         case AF_INET6:
-                return (xfrm_address_t *)&fl->fl6_dst;
+                return (xfrm_address_t *)&fl->u.ip6.daddr;
         }
         return NULL;
 }
 
 static __inline__
-xfrm_address_t *xfrm_flowi_saddr(struct flowi *fl, unsigned short family)
+xfrm_address_t *xfrm_flowi_saddr(const struct flowi *fl, unsigned short family)
 {
         switch (family){
         case AF_INET:
-                return (xfrm_address_t *)&fl->fl4_src;
+                return (xfrm_address_t *)&fl->u.ip4.saddr;
         case AF_INET6:
-                return (xfrm_address_t *)&fl->fl6_src;
+                return (xfrm_address_t *)&fl->u.ip6.saddr;
         }
         return NULL;
 }
 
 static __inline__
-void xfrm_flowi_addr_get(struct flowi *fl,
+void xfrm_flowi_addr_get(const 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));
+                memcpy(&saddr->a4, &fl->u.ip4.saddr, sizeof(saddr->a4));
+                memcpy(&daddr->a4, &fl->u.ip4.daddr, 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);
+                ipv6_addr_copy((struct in6_addr *)&saddr->a6, &fl->u.ip6.saddr);
+                ipv6_addr_copy((struct in6_addr *)&daddr->a6, &fl->u.ip6.daddr);
                 break;
         }
 }
 
 static __inline__ int
-__xfrm4_state_addr_check(struct xfrm_state *x,
-                         xfrm_address_t *daddr, xfrm_address_t *saddr)
+__xfrm4_state_addr_check(const struct xfrm_state *x,
+                         const xfrm_address_t *daddr, const xfrm_address_t *saddr)
 {
         if (daddr->a4 == x->id.daddr.a4 &&
             (saddr->a4 == x->props.saddr.a4 || !saddr->a4 || !x->props.saddr.a4))
@@ -1177,8 +1216,8 @@ __xfrm4_state_addr_check(struct xfrm_state *x,
 }
 
 static __inline__ int
-__xfrm6_state_addr_check(struct xfrm_state *x,
-                         xfrm_address_t *daddr, xfrm_address_t *saddr)
+__xfrm6_state_addr_check(const struct xfrm_state *x,
+                         const xfrm_address_t *daddr, const xfrm_address_t *saddr)
 {
         if (!ipv6_addr_cmp((struct in6_addr *)daddr, (struct in6_addr *)&x->id.daddr) &&
             (!ipv6_addr_cmp((struct in6_addr *)saddr, (struct in6_addr *)&x->props.saddr)|| 
@@ -1189,8 +1228,8 @@ __xfrm6_state_addr_check(struct xfrm_state *x,
 }
 
 static __inline__ int
-xfrm_state_addr_check(struct xfrm_state *x,
-                      xfrm_address_t *daddr, xfrm_address_t *saddr,
+xfrm_state_addr_check(const struct xfrm_state *x,
+                      const xfrm_address_t *daddr, const xfrm_address_t *saddr,
                       unsigned short family)
 {
         switch (family) {
@@ -1203,23 +1242,23 @@ xfrm_state_addr_check(struct xfrm_state *x,
 }
 
 static __inline__ int
-xfrm_state_addr_flow_check(struct xfrm_state *x, struct flowi *fl,
+xfrm_state_addr_flow_check(const struct xfrm_state *x, const struct flowi *fl,
                            unsigned short family)
 {
         switch (family) {
         case AF_INET:
                 return __xfrm4_state_addr_check(x,
-                                                (xfrm_address_t *)&fl->fl4_dst,
-                                                (xfrm_address_t *)&fl->fl4_src);
+                                                (const xfrm_address_t *)&fl->u.ip4.daddr,
+                                                (const xfrm_address_t *)&fl->u.ip4.saddr);
         case AF_INET6:
                 return __xfrm6_state_addr_check(x,
-                                                (xfrm_address_t *)&fl->fl6_dst,
-                                                (xfrm_address_t *)&fl->fl6_src);
+                                                (const xfrm_address_t *)&fl->u.ip6.daddr,
+                                                (const xfrm_address_t *)&fl->u.ip6.saddr);
         }
         return 0;
 }
 
-static inline int xfrm_state_kern(struct xfrm_state *x)
+static inline int xfrm_state_kern(const struct xfrm_state *x)
 {
         return atomic_read(&x->tunnel_users);
 }
@@ -1323,8 +1362,10 @@ 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,
+extern struct xfrm_state *xfrm_state_find(const xfrm_address_t *daddr,
+                                          const xfrm_address_t *saddr,
+                                          const struct flowi *fl,
+                                          struct xfrm_tmpl *tmpl,
                                           struct xfrm_policy *pol, int *err,
                                           unsigned short family);
 extern struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark,
@@ -1337,11 +1378,11 @@ 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(struct net *net, u32 mark,
-                                            xfrm_address_t *daddr, __be32 spi,
+                                            const 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,
+                                                   const xfrm_address_t *daddr,
+                                                   const xfrm_address_t *saddr,
                                                    u8 proto,
                                                    unsigned short family);
 #ifdef CONFIG_XFRM_SUB_POLICY
@@ -1386,10 +1427,8 @@ extern int xfrm_state_delete(struct xfrm_state *x);
 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 u32 xfrm_replay_seqhi(struct xfrm_state *x, __be32 net_seq);
+extern int xfrm_init_replay(struct xfrm_state *x);
 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);
@@ -1468,19 +1507,19 @@ u32 xfrm_get_acqseq(void);
 extern int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi);
 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,
+                                 const xfrm_address_t *daddr,
+                                 const xfrm_address_t *saddr, int create,
                                  unsigned short family);
 extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol);
 
 #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_kmaddress *k);
+extern int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
+                      const struct xfrm_migrate *m, int num_bundles,
+                      const 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,
+extern int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
                         struct xfrm_migrate *m, int num_bundles,
                         struct xfrm_kmaddress *k);
 #endif
@@ -1500,10 +1539,10 @@ extern struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx);
 extern struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id);
 extern struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id);
 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,
+extern struct xfrm_algo_desc *xfrm_aalg_get_byname(const char *name, int probe);
+extern struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe);
+extern struct xfrm_algo_desc *xfrm_calg_get_byname(const char *name, int probe);
+extern struct xfrm_algo_desc *xfrm_aead_get_byname(const char *name, int icv_len,
                                                    int probe);
 
 struct hash_desc;
@@ -1511,7 +1550,8 @@ struct scatterlist;
 typedef int (icv_update_fn_t)(struct hash_desc *, struct scatterlist *,
                               unsigned int);
 
-static inline int xfrm_addr_cmp(xfrm_address_t *a, xfrm_address_t *b,
+static inline int xfrm_addr_cmp(const xfrm_address_t *a,
+                                const xfrm_address_t *b,
                                 int family)
 {
         switch (family) {
@@ -1544,16 +1584,21 @@ static inline int xfrm_aevent_is_on(struct net *net)
 }
 #endif
 
-static inline int xfrm_alg_len(struct xfrm_algo *alg)
+static inline int xfrm_alg_len(const 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)
+static inline int xfrm_alg_auth_len(const struct xfrm_algo_auth *alg)
 {
         return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
 }
 
+static inline int xfrm_replay_state_esn_len(struct xfrm_replay_state_esn *replay_esn)
+{
+        return sizeof(*replay_esn) + replay_esn->bmp_len * sizeof(__u32);
+}
+
 #ifdef CONFIG_XFRM_MIGRATE
 static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig)
 {
@@ -1597,7 +1642,7 @@ static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m)
         return m->v & m->m;
 }
 
-static inline int xfrm_mark_put(struct sk_buff *skb, struct xfrm_mark *m)
+static inline int xfrm_mark_put(struct sk_buff *skb, const struct xfrm_mark *m)
 {
         if (m->m | m->v)
                 NLA_PUT(skb, XFRMA_MARK, sizeof(struct xfrm_mark), m);