1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 21da177e4SLinus Torvalds #ifndef _NET_XFRM_H 31da177e4SLinus Torvalds #define _NET_XFRM_H 41da177e4SLinus Torvalds 5aabc9761SHerbert Xu #include <linux/compiler.h> 61da177e4SLinus Torvalds #include <linux/xfrm.h> 71da177e4SLinus Torvalds #include <linux/spinlock.h> 81da177e4SLinus Torvalds #include <linux/list.h> 91da177e4SLinus Torvalds #include <linux/skbuff.h> 1014c85021SArnaldo Carvalho de Melo #include <linux/socket.h> 111da177e4SLinus Torvalds #include <linux/pfkeyv2.h> 125794708fSMasahide NAKAMURA #include <linux/ipsec.h> 131da177e4SLinus Torvalds #include <linux/in6.h> 144a3e2f71SArjan van de Ven #include <linux/mutex.h> 15ab5f5e8bSJoy Latten #include <linux/audit.h> 165a0e3ad6STejun Heo #include <linux/slab.h> 1788755e9cSReshetova, Elena #include <linux/refcount.h> 181da177e4SLinus Torvalds 191da177e4SLinus Torvalds #include <net/sock.h> 201da177e4SLinus Torvalds #include <net/dst.h> 21436a0a40SHerbert Xu #include <net/ip.h> 221da177e4SLinus Torvalds #include <net/route.h> 231da177e4SLinus Torvalds #include <net/ipv6.h> 241da177e4SLinus Torvalds #include <net/ip6_fib.h> 25fe1a5f03STimo Teräs #include <net/flow.h> 26f203b76dSSteffen Klassert #include <net/gro_cells.h> 279e0d57fdSYury Polyanskiy 289e0d57fdSYury Polyanskiy #include <linux/interrupt.h> 299e0d57fdSYury Polyanskiy 30558f82efSMasahide NAKAMURA #ifdef CONFIG_XFRM_STATISTICS 31558f82efSMasahide NAKAMURA #include <net/snmp.h> 32558f82efSMasahide NAKAMURA #endif 331da177e4SLinus Torvalds 34d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_ESP 50 35d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_AH 51 36d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_COMP 108 37d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_IPIP 4 38d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_IPV6 41 39d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_ROUTING IPPROTO_ROUTING 40d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_DSTOPTS IPPROTO_DSTOPTS 41d3d6dd3aSMasahide NAKAMURA 42fa9921e4SNicolas Dichtel #define XFRM_ALIGN4(len) (((len) + 3) & ~3) 431da177e4SLinus Torvalds #define XFRM_ALIGN8(len) (((len) + 7) & ~7) 44b59f45d0SHerbert Xu #define MODULE_ALIAS_XFRM_MODE(family, encap) \ 45b59f45d0SHerbert Xu MODULE_ALIAS("xfrm-mode-" __stringify(family) "-" __stringify(encap)) 46d3d6dd3aSMasahide NAKAMURA #define MODULE_ALIAS_XFRM_TYPE(family, proto) \ 47d3d6dd3aSMasahide NAKAMURA MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto)) 48ffdb5211SIlan Tayari #define MODULE_ALIAS_XFRM_OFFLOAD_TYPE(family, proto) \ 49ffdb5211SIlan Tayari MODULE_ALIAS("xfrm-offload-" __stringify(family) "-" __stringify(proto)) 501da177e4SLinus Torvalds 51558f82efSMasahide NAKAMURA #ifdef CONFIG_XFRM_STATISTICS 5259c9940eSAlexey Dobriyan #define XFRM_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.xfrm_statistics, field) 53558f82efSMasahide NAKAMURA #else 5459c9940eSAlexey Dobriyan #define XFRM_INC_STATS(net, field) ((void)(net)) 55558f82efSMasahide NAKAMURA #endif 56558f82efSMasahide NAKAMURA 571da177e4SLinus Torvalds 581da177e4SLinus Torvalds /* Organization of SPD aka "XFRM rules" 591da177e4SLinus Torvalds ------------------------------------ 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds Basic objects: 621da177e4SLinus Torvalds - policy rule, struct xfrm_policy (=SPD entry) 631da177e4SLinus Torvalds - bundle of transformations, struct dst_entry == struct xfrm_dst (=SA bundle) 641da177e4SLinus Torvalds - instance of a transformer, struct xfrm_state (=SA) 651da177e4SLinus Torvalds - template to clone xfrm_state, struct xfrm_tmpl 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds SPD is plain linear list of xfrm_policy rules, ordered by priority. 681da177e4SLinus Torvalds (To be compatible with existing pfkeyv2 implementations, 691da177e4SLinus Torvalds many rules with priority of 0x7fffffff are allowed to exist and 701da177e4SLinus Torvalds such rules are ordered in an unpredictable way, thanks to bsd folks.) 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds Lookup is plain linear search until the first match with selector. 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds If "action" is "block", then we prohibit the flow, otherwise: 751da177e4SLinus Torvalds if "xfrms_nr" is zero, the flow passes untransformed. Otherwise, 761da177e4SLinus Torvalds policy entry has list of up to XFRM_MAX_DEPTH transformations, 771da177e4SLinus Torvalds described by templates xfrm_tmpl. Each template is resolved 781da177e4SLinus Torvalds to a complete xfrm_state (see below) and we pack bundle of transformations 791da177e4SLinus Torvalds to a dst_entry returned to requestor. 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds dst -. xfrm .-> xfrm_state #1 821da177e4SLinus Torvalds |---. child .-> dst -. xfrm .-> xfrm_state #2 831da177e4SLinus Torvalds |---. child .-> dst -. xfrm .-> xfrm_state #3 841da177e4SLinus Torvalds |---. child .-> NULL 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds Bundles are cached at xrfm_policy struct (field ->bundles). 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds Resolution of xrfm_tmpl 901da177e4SLinus Torvalds ----------------------- 911da177e4SLinus Torvalds Template contains: 921da177e4SLinus Torvalds 1. ->mode Mode: transport or tunnel 931da177e4SLinus Torvalds 2. ->id.proto Protocol: AH/ESP/IPCOMP 941da177e4SLinus Torvalds 3. ->id.daddr Remote tunnel endpoint, ignored for transport mode. 951da177e4SLinus Torvalds Q: allow to resolve security gateway? 961da177e4SLinus Torvalds 4. ->id.spi If not zero, static SPI. 971da177e4SLinus Torvalds 5. ->saddr Local tunnel endpoint, ignored for transport mode. 981da177e4SLinus Torvalds 6. ->algos List of allowed algos. Plain bitmask now. 991da177e4SLinus Torvalds Q: ealgos, aalgos, calgos. What a mess... 1001da177e4SLinus Torvalds 7. ->share Sharing mode. 1011da177e4SLinus Torvalds Q: how to implement private sharing mode? To add struct sock* to 1021da177e4SLinus Torvalds flow id? 1031da177e4SLinus Torvalds 1041da177e4SLinus Torvalds Having this template we search through SAD searching for entries 1051da177e4SLinus Torvalds with appropriate mode/proto/algo, permitted by selector. 1061da177e4SLinus Torvalds If no appropriate entry found, it is requested from key manager. 1071da177e4SLinus Torvalds 1081da177e4SLinus Torvalds PROBLEMS: 1091da177e4SLinus Torvalds Q: How to find all the bundles referring to a physical path for 1101da177e4SLinus Torvalds PMTU discovery? Seems, dst should contain list of all parents... 1111da177e4SLinus Torvalds and enter to infinite locking hierarchy disaster. 1121da177e4SLinus Torvalds No! It is easier, we will not search for them, let them find us. 1131da177e4SLinus Torvalds We add genid to each dst plus pointer to genid of raw IP route, 1141da177e4SLinus Torvalds pmtu disc will update pmtu on raw IP route and increase its genid. 1151da177e4SLinus Torvalds dst_check() will see this for top level and trigger resyncing 1161da177e4SLinus Torvalds metrics. Plus, it will be made via sk->sk_dst_cache. Solved. 1171da177e4SLinus Torvalds */ 1181da177e4SLinus Torvalds 11912a169e7SHerbert Xu struct xfrm_state_walk { 12012a169e7SHerbert Xu struct list_head all; 12112a169e7SHerbert Xu u8 state; 12212a169e7SHerbert Xu u8 dying; 12312a169e7SHerbert Xu u8 proto; 12412a169e7SHerbert Xu u32 seq; 125870a2df4SNicolas Dichtel struct xfrm_address_filter *filter; 12612a169e7SHerbert Xu }; 12712a169e7SHerbert Xu 128d77e38e6SSteffen Klassert struct xfrm_state_offload { 129d77e38e6SSteffen Klassert struct net_device *dev; 130d77e38e6SSteffen Klassert unsigned long offload_handle; 131d77e38e6SSteffen Klassert unsigned int num_exthdrs; 132d77e38e6SSteffen Klassert u8 flags; 133d77e38e6SSteffen Klassert }; 134d77e38e6SSteffen Klassert 1351da177e4SLinus Torvalds /* Full description of state of transformer. */ 136fd2c3ef7SEric Dumazet struct xfrm_state { 1370c5c9fb5SEric W. Biederman possible_net_t xs_net; 138abb81c4fSHerbert Xu union { 13912a169e7SHerbert Xu struct hlist_node gclist; 1408f126e37SDavid S. Miller struct hlist_node bydst; 141abb81c4fSHerbert Xu }; 1428f126e37SDavid S. Miller struct hlist_node bysrc; 1438f126e37SDavid S. Miller struct hlist_node byspi; 1441da177e4SLinus Torvalds 14588755e9cSReshetova, Elena refcount_t refcnt; 1461da177e4SLinus Torvalds spinlock_t lock; 1471da177e4SLinus Torvalds 1481da177e4SLinus Torvalds struct xfrm_id id; 1491da177e4SLinus Torvalds struct xfrm_selector sel; 150bf825f81SJamal Hadi Salim struct xfrm_mark mark; 1517e652640SSteffen Klassert u32 if_id; 15235d2856bSMartin Willi u32 tfcpad; 1531da177e4SLinus Torvalds 1549d4a706dSDavid S. Miller u32 genid; 1559d4a706dSDavid S. Miller 15612a169e7SHerbert Xu /* Key manager bits */ 15712a169e7SHerbert Xu struct xfrm_state_walk km; 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds /* Parameters of this state. */ 1601da177e4SLinus Torvalds struct { 1611da177e4SLinus Torvalds u32 reqid; 1621da177e4SLinus Torvalds u8 mode; 1631da177e4SLinus Torvalds u8 replay_window; 1641da177e4SLinus Torvalds u8 aalgo, ealgo, calgo; 1651da177e4SLinus Torvalds u8 flags; 1661da177e4SLinus Torvalds u16 family; 1671da177e4SLinus Torvalds xfrm_address_t saddr; 1681da177e4SLinus Torvalds int header_len; 1691da177e4SLinus Torvalds int trailer_len; 170a947b0a9SNicolas Dichtel u32 extra_flags; 1719b42c1f1SSteffen Klassert struct xfrm_mark smark; 1721da177e4SLinus Torvalds } props; 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds struct xfrm_lifetime_cfg lft; 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds /* Data for transformer */ 1774447bb33SMartin Willi struct xfrm_algo_auth *aalg; 1781da177e4SLinus Torvalds struct xfrm_algo *ealg; 1791da177e4SLinus Torvalds struct xfrm_algo *calg; 1801a6509d9SHerbert Xu struct xfrm_algo_aead *aead; 18169b0137fSHerbert Xu const char *geniv; 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds /* Data for encapsulator */ 1841da177e4SLinus Torvalds struct xfrm_encap_tmpl *encap; 1851da177e4SLinus Torvalds 186060f02a3SNoriaki TAKAMIYA /* Data for care-of address */ 187060f02a3SNoriaki TAKAMIYA xfrm_address_t *coaddr; 188060f02a3SNoriaki TAKAMIYA 1891da177e4SLinus Torvalds /* IPComp needs an IPIP tunnel for handling uncompressed packets */ 1901da177e4SLinus Torvalds struct xfrm_state *tunnel; 1911da177e4SLinus Torvalds 1921da177e4SLinus Torvalds /* If a tunnel, number of users + 1 */ 1931da177e4SLinus Torvalds atomic_t tunnel_users; 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds /* State for replay detection */ 1961da177e4SLinus Torvalds struct xfrm_replay_state replay; 1979736acf3SSteffen Klassert struct xfrm_replay_state_esn *replay_esn; 1981da177e4SLinus Torvalds 199f8cd5488SJamal Hadi Salim /* Replay detection state at the time we sent the last notification */ 200f8cd5488SJamal Hadi Salim struct xfrm_replay_state preplay; 2019736acf3SSteffen Klassert struct xfrm_replay_state_esn *preplay_esn; 202f8cd5488SJamal Hadi Salim 2039fdc4883SSteffen Klassert /* The functions for replay detection. */ 204e45a8a9eSJulia Lawall const struct xfrm_replay *repl; 2059fdc4883SSteffen Klassert 2062717096aSJamal Hadi Salim /* internal flag that only holds state for delayed aevent at the 2072717096aSJamal Hadi Salim * moment 2082717096aSJamal Hadi Salim */ 2092717096aSJamal Hadi Salim u32 xflags; 2102717096aSJamal Hadi Salim 211f8cd5488SJamal Hadi Salim /* Replay detection notification settings */ 212f8cd5488SJamal Hadi Salim u32 replay_maxage; 213f8cd5488SJamal Hadi Salim u32 replay_maxdiff; 214f8cd5488SJamal Hadi Salim 215f8cd5488SJamal Hadi Salim /* Replay detection notification timer */ 216f8cd5488SJamal Hadi Salim struct timer_list rtimer; 217f8cd5488SJamal Hadi Salim 2181da177e4SLinus Torvalds /* Statistics */ 2191da177e4SLinus Torvalds struct xfrm_stats stats; 2201da177e4SLinus Torvalds 2211da177e4SLinus Torvalds struct xfrm_lifetime_cur curlft; 2229e0d57fdSYury Polyanskiy struct tasklet_hrtimer mtimer; 2231da177e4SLinus Torvalds 224d77e38e6SSteffen Klassert struct xfrm_state_offload xso; 225d77e38e6SSteffen Klassert 226e3c0d047SFan Du /* used to fix curlft->add_time when changing date */ 227e3c0d047SFan Du long saved_tmo; 228e3c0d047SFan Du 2299afaca05SMasahide NAKAMURA /* Last used time */ 23003dc7a35SArnd Bergmann time64_t lastused; 2319afaca05SMasahide NAKAMURA 232cac2661cSSteffen Klassert struct page_frag xfrag; 233cac2661cSSteffen Klassert 2341da177e4SLinus Torvalds /* Reference to data common to all the instances of this 2351da177e4SLinus Torvalds * transformer. */ 236533cb5b0SEric Dumazet const struct xfrm_type *type; 23713996378SHerbert Xu struct xfrm_mode *inner_mode; 238df9dcb45SKazunori MIYAZAWA struct xfrm_mode *inner_mode_iaf; 23913996378SHerbert Xu struct xfrm_mode *outer_mode; 2401da177e4SLinus Torvalds 2419d389d7fSSteffen Klassert const struct xfrm_type_offload *type_offload; 2429d389d7fSSteffen Klassert 243df71837dSTrent Jaeger /* Security context */ 244df71837dSTrent Jaeger struct xfrm_sec_ctx *security; 245df71837dSTrent Jaeger 2461da177e4SLinus Torvalds /* Private data of this transformer, format is opaque, 2471da177e4SLinus Torvalds * interpreted by xfrm_type methods. */ 2481da177e4SLinus Torvalds void *data; 2491da177e4SLinus Torvalds }; 2501da177e4SLinus Torvalds 251673c09beSAlexey Dobriyan static inline struct net *xs_net(struct xfrm_state *x) 252673c09beSAlexey Dobriyan { 253673c09beSAlexey Dobriyan return read_pnet(&x->xs_net); 254673c09beSAlexey Dobriyan } 255673c09beSAlexey Dobriyan 2562717096aSJamal Hadi Salim /* xflags - make enum if more show up */ 2572717096aSJamal Hadi Salim #define XFRM_TIME_DEFER 1 258e3c0d047SFan Du #define XFRM_SOFT_EXPIRE 2 2592717096aSJamal Hadi Salim 2601da177e4SLinus Torvalds enum { 2611da177e4SLinus Torvalds XFRM_STATE_VOID, 2621da177e4SLinus Torvalds XFRM_STATE_ACQ, 2631da177e4SLinus Torvalds XFRM_STATE_VALID, 2641da177e4SLinus Torvalds XFRM_STATE_ERROR, 2651da177e4SLinus Torvalds XFRM_STATE_EXPIRED, 2661da177e4SLinus Torvalds XFRM_STATE_DEAD 2671da177e4SLinus Torvalds }; 2681da177e4SLinus Torvalds 26926b15dadSJamal Hadi Salim /* callback structure passed from either netlink or pfkey */ 270fd2c3ef7SEric Dumazet struct km_event { 271bf08867fSHerbert Xu union { 272bf08867fSHerbert Xu u32 hard; 273bf08867fSHerbert Xu u32 proto; 274bf08867fSHerbert Xu u32 byid; 275f8cd5488SJamal Hadi Salim u32 aevent; 276f7b6983fSMasahide NAKAMURA u32 type; 277bf08867fSHerbert Xu } data; 278bf08867fSHerbert Xu 27926b15dadSJamal Hadi Salim u32 seq; 28015e47304SEric W. Biederman u32 portid; 28126b15dadSJamal Hadi Salim u32 event; 2827067802eSAlexey Dobriyan struct net *net; 28326b15dadSJamal Hadi Salim }; 28426b15dadSJamal Hadi Salim 2859fdc4883SSteffen Klassert struct xfrm_replay { 2869fdc4883SSteffen Klassert void (*advance)(struct xfrm_state *x, __be32 net_seq); 2879fdc4883SSteffen Klassert int (*check)(struct xfrm_state *x, 2889fdc4883SSteffen Klassert struct sk_buff *skb, 2899fdc4883SSteffen Klassert __be32 net_seq); 2903b59df46SSteffen Klassert int (*recheck)(struct xfrm_state *x, 2913b59df46SSteffen Klassert struct sk_buff *skb, 2923b59df46SSteffen Klassert __be32 net_seq); 2939fdc4883SSteffen Klassert void (*notify)(struct xfrm_state *x, int event); 2949fdc4883SSteffen Klassert int (*overflow)(struct xfrm_state *x, struct sk_buff *skb); 2959fdc4883SSteffen Klassert }; 2969fdc4883SSteffen Klassert 297f203b76dSSteffen Klassert struct xfrm_if_cb { 298f203b76dSSteffen Klassert struct xfrm_if *(*decode_session)(struct sk_buff *skb); 299f203b76dSSteffen Klassert }; 300f203b76dSSteffen Klassert 301f203b76dSSteffen Klassert void xfrm_if_register_cb(const struct xfrm_if_cb *ifcb); 302f203b76dSSteffen Klassert void xfrm_if_unregister_cb(void); 303f203b76dSSteffen Klassert 30425ee3286SHerbert Xu struct net_device; 3051da177e4SLinus Torvalds struct xfrm_type; 3061da177e4SLinus Torvalds struct xfrm_dst; 3071da177e4SLinus Torvalds struct xfrm_policy_afinfo { 3081da177e4SLinus Torvalds struct dst_ops *dst_ops; 30942a7b32bSDavid Ahern struct dst_entry *(*dst_lookup)(struct net *net, 31042a7b32bSDavid Ahern int tos, int oif, 3115e6b930fSDavid S. Miller const xfrm_address_t *saddr, 312077fbac4SLorenzo Colitti const xfrm_address_t *daddr, 313077fbac4SLorenzo Colitti u32 mark); 31442a7b32bSDavid Ahern int (*get_saddr)(struct net *net, int oif, 31542a7b32bSDavid Ahern xfrm_address_t *saddr, 316077fbac4SLorenzo Colitti xfrm_address_t *daddr, 317077fbac4SLorenzo Colitti u32 mark); 3181da177e4SLinus Torvalds void (*decode_session)(struct sk_buff *skb, 319d5422efeSHerbert Xu struct flowi *fl, 320d5422efeSHerbert Xu int reverse); 32105d84025SDavid S. Miller int (*get_tos)(const struct flowi *fl); 322a1b05140SMasahide NAKAMURA int (*init_path)(struct xfrm_dst *path, 323a1b05140SMasahide NAKAMURA struct dst_entry *dst, 324a1b05140SMasahide NAKAMURA int nfheader_len); 32525ee3286SHerbert Xu int (*fill_dst)(struct xfrm_dst *xdst, 32687c1e12bSHerbert Xu struct net_device *dev, 3270c7b3eefSDavid S. Miller const struct flowi *fl); 3282774c131SDavid S. Miller struct dst_entry *(*blackhole_route)(struct net *net, struct dst_entry *orig); 3291da177e4SLinus Torvalds }; 3301da177e4SLinus Torvalds 331a2817d8bSFlorian Westphal int xfrm_policy_register_afinfo(const struct xfrm_policy_afinfo *afinfo, int family); 332a2817d8bSFlorian Westphal void xfrm_policy_unregister_afinfo(const struct xfrm_policy_afinfo *afinfo); 333d511337aSJoe Perches void km_policy_notify(struct xfrm_policy *xp, int dir, 334d511337aSJoe Perches const struct km_event *c); 335d511337aSJoe Perches void km_state_notify(struct xfrm_state *x, const struct km_event *c); 3361da177e4SLinus Torvalds 3371da177e4SLinus Torvalds struct xfrm_tmpl; 338d511337aSJoe Perches int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, 339d511337aSJoe Perches struct xfrm_policy *pol); 340d511337aSJoe Perches void km_state_expired(struct xfrm_state *x, int hard, u32 portid); 341d511337aSJoe Perches int __xfrm_state_delete(struct xfrm_state *x); 34253bc6b4dSJamal Hadi Salim 3431da177e4SLinus Torvalds struct xfrm_state_afinfo { 34417c2a42aSHerbert Xu unsigned int family; 34536cf9acfSHerbert Xu unsigned int proto; 3468e3d716cSAl Viro __be16 eth_proto; 34717c2a42aSHerbert Xu struct module *owner; 348533cb5b0SEric Dumazet const struct xfrm_type *type_map[IPPROTO_MAX]; 3499d389d7fSSteffen Klassert const struct xfrm_type_offload *type_offload_map[IPPROTO_MAX]; 350aa5d62ccSHerbert Xu struct xfrm_mode *mode_map[XFRM_MODE_MAX]; 3519d389d7fSSteffen Klassert 352d094cd83SHerbert Xu int (*init_flags)(struct xfrm_state *x); 35373e5ebb2SDavid S. Miller void (*init_tempsel)(struct xfrm_selector *sel, 35473e5ebb2SDavid S. Miller const struct flowi *fl); 35519bd6244SDavid S. Miller void (*init_temprop)(struct xfrm_state *x, 35619bd6244SDavid S. Miller const struct xfrm_tmpl *tmpl, 35719bd6244SDavid S. Miller const xfrm_address_t *daddr, 35819bd6244SDavid S. Miller const xfrm_address_t *saddr); 35941a49cc3SMasahide NAKAMURA int (*tmpl_sort)(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n); 36041a49cc3SMasahide NAKAMURA int (*state_sort)(struct xfrm_state **dst, struct xfrm_state **src, int n); 361ede2059dSEric W. Biederman int (*output)(struct net *net, struct sock *sk, struct sk_buff *skb); 3627026b1ddSDavid Miller int (*output_finish)(struct sock *sk, struct sk_buff *skb); 363227620e2SHerbert Xu int (*extract_input)(struct xfrm_state *x, 364227620e2SHerbert Xu struct sk_buff *skb); 36536cf9acfSHerbert Xu int (*extract_output)(struct xfrm_state *x, 36636cf9acfSHerbert Xu struct sk_buff *skb); 367716062fdSHerbert Xu int (*transport_finish)(struct sk_buff *skb, 368716062fdSHerbert Xu int async); 369628e341fSHannes Frederic Sowa void (*local_error)(struct sk_buff *skb, u32 mtu); 3701da177e4SLinus Torvalds }; 3711da177e4SLinus Torvalds 372d511337aSJoe Perches int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo); 373d511337aSJoe Perches int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo); 374d511337aSJoe Perches struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family); 375711059b9SFlorian Westphal struct xfrm_state_afinfo *xfrm_state_afinfo_get_rcu(unsigned int family); 3761da177e4SLinus Torvalds 3772f32b51bSSteffen Klassert struct xfrm_input_afinfo { 3782f32b51bSSteffen Klassert unsigned int family; 3792f32b51bSSteffen Klassert int (*callback)(struct sk_buff *skb, u8 protocol, 3802f32b51bSSteffen Klassert int err); 3812f32b51bSSteffen Klassert }; 3822f32b51bSSteffen Klassert 383960fdfdeSFlorian Westphal int xfrm_input_register_afinfo(const struct xfrm_input_afinfo *afinfo); 384960fdfdeSFlorian Westphal int xfrm_input_unregister_afinfo(const struct xfrm_input_afinfo *afinfo); 3852f32b51bSSteffen Klassert 386b48c05abSSteffen Klassert void xfrm_flush_gc(void); 387d511337aSJoe Perches void xfrm_state_delete_tunnel(struct xfrm_state *x); 3881da177e4SLinus Torvalds 389fd2c3ef7SEric Dumazet struct xfrm_type { 3901da177e4SLinus Torvalds char *description; 3911da177e4SLinus Torvalds struct module *owner; 392a6337463Sjamal u8 proto; 393a6337463Sjamal u8 flags; 3941b5c2299SMasahide NAKAMURA #define XFRM_TYPE_NON_FRAGMENT 1 395436a0a40SHerbert Xu #define XFRM_TYPE_REPLAY_PROT 2 396f04e7e8dSHerbert Xu #define XFRM_TYPE_LOCAL_COADDR 4 397f04e7e8dSHerbert Xu #define XFRM_TYPE_REMOTE_COADDR 8 3981da177e4SLinus Torvalds 39972cb6962SHerbert Xu int (*init_state)(struct xfrm_state *x); 4001da177e4SLinus Torvalds void (*destructor)(struct xfrm_state *); 401e695633eSHerbert Xu int (*input)(struct xfrm_state *, struct sk_buff *skb); 4021da177e4SLinus Torvalds int (*output)(struct xfrm_state *, struct sk_buff *pskb); 4038f029de2SDavid S. Miller int (*reject)(struct xfrm_state *, struct sk_buff *, 4048f029de2SDavid S. Miller const struct flowi *); 405aee5adb4SMasahide NAKAMURA int (*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **); 4061da177e4SLinus Torvalds /* Estimate maximal size of result of transformation of a dgram */ 407c5c25238SPatrick McHardy u32 (*get_mtu)(struct xfrm_state *, int size); 4081da177e4SLinus Torvalds }; 4091da177e4SLinus Torvalds 410d511337aSJoe Perches int xfrm_register_type(const struct xfrm_type *type, unsigned short family); 411d511337aSJoe Perches int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family); 4121da177e4SLinus Torvalds 4139d389d7fSSteffen Klassert struct xfrm_type_offload { 4149d389d7fSSteffen Klassert char *description; 4159d389d7fSSteffen Klassert struct module *owner; 4169d389d7fSSteffen Klassert u8 proto; 4179d389d7fSSteffen Klassert void (*encap)(struct xfrm_state *, struct sk_buff *pskb); 4189d389d7fSSteffen Klassert int (*input_tail)(struct xfrm_state *x, struct sk_buff *skb); 4199d389d7fSSteffen Klassert int (*xmit)(struct xfrm_state *, struct sk_buff *pskb, netdev_features_t features); 4209d389d7fSSteffen Klassert }; 4219d389d7fSSteffen Klassert 4229d389d7fSSteffen Klassert int xfrm_register_type_offload(const struct xfrm_type_offload *type, unsigned short family); 4239d389d7fSSteffen Klassert int xfrm_unregister_type_offload(const struct xfrm_type_offload *type, unsigned short family); 4249d389d7fSSteffen Klassert 425b59f45d0SHerbert Xu struct xfrm_mode { 426227620e2SHerbert Xu /* 427227620e2SHerbert Xu * Remove encapsulation header. 428227620e2SHerbert Xu * 429227620e2SHerbert Xu * The IP header will be moved over the top of the encapsulation 430227620e2SHerbert Xu * header. 431227620e2SHerbert Xu * 432227620e2SHerbert Xu * On entry, the transport header shall point to where the IP header 433227620e2SHerbert Xu * should be and the network header shall be set to where the IP 434227620e2SHerbert Xu * header currently is. skb->data shall point to the start of the 435227620e2SHerbert Xu * payload. 436227620e2SHerbert Xu */ 437227620e2SHerbert Xu int (*input2)(struct xfrm_state *x, struct sk_buff *skb); 438227620e2SHerbert Xu 439227620e2SHerbert Xu /* 440227620e2SHerbert Xu * This is the actual input entry point. 441227620e2SHerbert Xu * 442227620e2SHerbert Xu * For transport mode and equivalent this would be identical to 443227620e2SHerbert Xu * input2 (which does not need to be set). While tunnel mode 444227620e2SHerbert Xu * and equivalent would set this to the tunnel encapsulation function 445227620e2SHerbert Xu * xfrm4_prepare_input that would in turn call input2. 446227620e2SHerbert Xu */ 447b59f45d0SHerbert Xu int (*input)(struct xfrm_state *x, struct sk_buff *skb); 44837fedd3aSHerbert Xu 44937fedd3aSHerbert Xu /* 45037fedd3aSHerbert Xu * Add encapsulation header. 45137fedd3aSHerbert Xu * 45237fedd3aSHerbert Xu * On exit, the transport header will be set to the start of the 45337fedd3aSHerbert Xu * encapsulation header to be filled in by x->type->output and 45437fedd3aSHerbert Xu * the mac header will be set to the nextheader (protocol for 45537fedd3aSHerbert Xu * IPv4) field of the extension header directly preceding the 45637fedd3aSHerbert Xu * encapsulation header, or in its absence, that of the top IP 45737fedd3aSHerbert Xu * header. The value of the network header will always point 45837fedd3aSHerbert Xu * to the top IP header while skb->data will point to the payload. 45937fedd3aSHerbert Xu */ 46036cf9acfSHerbert Xu int (*output2)(struct xfrm_state *x,struct sk_buff *skb); 46136cf9acfSHerbert Xu 46236cf9acfSHerbert Xu /* 46336cf9acfSHerbert Xu * This is the actual output entry point. 46436cf9acfSHerbert Xu * 46536cf9acfSHerbert Xu * For transport mode and equivalent this would be identical to 46636cf9acfSHerbert Xu * output2 (which does not need to be set). While tunnel mode 46736cf9acfSHerbert Xu * and equivalent would set this to a tunnel encapsulation function 46836cf9acfSHerbert Xu * (xfrm4_prepare_output or xfrm6_prepare_output) that would in turn 46936cf9acfSHerbert Xu * call output2. 47036cf9acfSHerbert Xu */ 471eb878e84SJamal Hadi Salim int (*output)(struct xfrm_state *x, struct sk_buff *skb); 472b59f45d0SHerbert Xu 473c35fe410SSteffen Klassert /* 474c35fe410SSteffen Klassert * Adjust pointers into the packet and do GSO segmentation. 475c35fe410SSteffen Klassert */ 476c35fe410SSteffen Klassert struct sk_buff *(*gso_segment)(struct xfrm_state *x, struct sk_buff *skb, netdev_features_t features); 477c35fe410SSteffen Klassert 478c35fe410SSteffen Klassert /* 479c35fe410SSteffen Klassert * Adjust pointers into the packet when IPsec is done at layer2. 480c35fe410SSteffen Klassert */ 481c35fe410SSteffen Klassert void (*xmit)(struct xfrm_state *x, struct sk_buff *skb); 482c35fe410SSteffen Klassert 48317c2a42aSHerbert Xu struct xfrm_state_afinfo *afinfo; 484b59f45d0SHerbert Xu struct module *owner; 485b59f45d0SHerbert Xu unsigned int encap; 4861bfcb10fSHerbert Xu int flags; 4871bfcb10fSHerbert Xu }; 4881bfcb10fSHerbert Xu 4891bfcb10fSHerbert Xu /* Flags for xfrm_mode. */ 4901bfcb10fSHerbert Xu enum { 4911bfcb10fSHerbert Xu XFRM_MODE_FLAG_TUNNEL = 1, 492b59f45d0SHerbert Xu }; 493b59f45d0SHerbert Xu 494d511337aSJoe Perches int xfrm_register_mode(struct xfrm_mode *mode, int family); 495d511337aSJoe Perches int xfrm_unregister_mode(struct xfrm_mode *mode, int family); 496b59f45d0SHerbert Xu 497df9dcb45SKazunori MIYAZAWA static inline int xfrm_af2proto(unsigned int family) 498df9dcb45SKazunori MIYAZAWA { 499df9dcb45SKazunori MIYAZAWA switch(family) { 500df9dcb45SKazunori MIYAZAWA case AF_INET: 501df9dcb45SKazunori MIYAZAWA return IPPROTO_IPIP; 502df9dcb45SKazunori MIYAZAWA case AF_INET6: 503df9dcb45SKazunori MIYAZAWA return IPPROTO_IPV6; 504df9dcb45SKazunori MIYAZAWA default: 505df9dcb45SKazunori MIYAZAWA return 0; 506df9dcb45SKazunori MIYAZAWA } 507df9dcb45SKazunori MIYAZAWA } 508df9dcb45SKazunori MIYAZAWA 509df9dcb45SKazunori MIYAZAWA static inline struct xfrm_mode *xfrm_ip2inner_mode(struct xfrm_state *x, int ipproto) 510df9dcb45SKazunori MIYAZAWA { 511df9dcb45SKazunori MIYAZAWA if ((ipproto == IPPROTO_IPIP && x->props.family == AF_INET) || 512df9dcb45SKazunori MIYAZAWA (ipproto == IPPROTO_IPV6 && x->props.family == AF_INET6)) 513df9dcb45SKazunori MIYAZAWA return x->inner_mode; 514df9dcb45SKazunori MIYAZAWA else 515df9dcb45SKazunori MIYAZAWA return x->inner_mode_iaf; 516df9dcb45SKazunori MIYAZAWA } 517df9dcb45SKazunori MIYAZAWA 518fd2c3ef7SEric Dumazet struct xfrm_tmpl { 5191da177e4SLinus Torvalds /* id in template is interpreted as: 5201da177e4SLinus Torvalds * daddr - destination of tunnel, may be zero for transport mode. 5211da177e4SLinus Torvalds * spi - zero to acquire spi. Not zero if spi is static, then 5221da177e4SLinus Torvalds * daddr must be fixed too. 5231da177e4SLinus Torvalds * proto - AH/ESP/IPCOMP 5241da177e4SLinus Torvalds */ 5251da177e4SLinus Torvalds struct xfrm_id id; 5261da177e4SLinus Torvalds 5271da177e4SLinus Torvalds /* Source address of tunnel. Ignored, if it is not a tunnel. */ 5281da177e4SLinus Torvalds xfrm_address_t saddr; 5291da177e4SLinus Torvalds 53076b3f055SMiika Komu unsigned short encap_family; 53176b3f055SMiika Komu 532a6337463Sjamal u32 reqid; 5331da177e4SLinus Torvalds 5347e49e6deSMasahide NAKAMURA /* Mode: transport, tunnel etc. */ 535a6337463Sjamal u8 mode; 5361da177e4SLinus Torvalds 5371da177e4SLinus Torvalds /* Sharing mode: unique, this session only, this user only etc. */ 538a6337463Sjamal u8 share; 5391da177e4SLinus Torvalds 5401da177e4SLinus Torvalds /* May skip this transfomration if no SA is found */ 541a6337463Sjamal u8 optional; 5421da177e4SLinus Torvalds 543c5d18e98SHerbert Xu /* Skip aalgos/ealgos/calgos checks. */ 544a6337463Sjamal u8 allalgs; 545c5d18e98SHerbert Xu 5461da177e4SLinus Torvalds /* Bit mask of algos allowed for acquisition */ 547a6337463Sjamal u32 aalgos; 548a6337463Sjamal u32 ealgos; 549a6337463Sjamal u32 calgos; 5501da177e4SLinus Torvalds }; 5511da177e4SLinus Torvalds 552622dc828SMasahide NAKAMURA #define XFRM_MAX_DEPTH 6 55354ef207aSSteffen Klassert #define XFRM_MAX_OFFLOAD_DEPTH 1 5541da177e4SLinus Torvalds 55512a169e7SHerbert Xu struct xfrm_policy_walk_entry { 55612a169e7SHerbert Xu struct list_head all; 55712a169e7SHerbert Xu u8 dead; 55812a169e7SHerbert Xu }; 55912a169e7SHerbert Xu 56012a169e7SHerbert Xu struct xfrm_policy_walk { 56112a169e7SHerbert Xu struct xfrm_policy_walk_entry walk; 56212a169e7SHerbert Xu u8 type; 56312a169e7SHerbert Xu u32 seq; 56412a169e7SHerbert Xu }; 56512a169e7SHerbert Xu 566a0073fe1SSteffen Klassert struct xfrm_policy_queue { 567a0073fe1SSteffen Klassert struct sk_buff_head hold_queue; 568a0073fe1SSteffen Klassert struct timer_list hold_timer; 569a0073fe1SSteffen Klassert unsigned long timeout; 570a0073fe1SSteffen Klassert }; 571a0073fe1SSteffen Klassert 572fd2c3ef7SEric Dumazet struct xfrm_policy { 5730c5c9fb5SEric W. Biederman possible_net_t xp_net; 5742518c7c2SDavid S. Miller struct hlist_node bydst; 5752518c7c2SDavid S. Miller struct hlist_node byidx; 5761da177e4SLinus Torvalds 5771da177e4SLinus Torvalds /* This lock only affects elements except for entry. */ 5781da177e4SLinus Torvalds rwlock_t lock; 579850a6212SReshetova, Elena refcount_t refcnt; 5801da177e4SLinus Torvalds struct timer_list timer; 5811da177e4SLinus Torvalds 58280c802f3STimo Teräs atomic_t genid; 5831da177e4SLinus Torvalds u32 priority; 5841da177e4SLinus Torvalds u32 index; 5857e652640SSteffen Klassert u32 if_id; 586bf825f81SJamal Hadi Salim struct xfrm_mark mark; 5871da177e4SLinus Torvalds struct xfrm_selector selector; 5881da177e4SLinus Torvalds struct xfrm_lifetime_cfg lft; 5891da177e4SLinus Torvalds struct xfrm_lifetime_cur curlft; 59012a169e7SHerbert Xu struct xfrm_policy_walk_entry walk; 591a0073fe1SSteffen Klassert struct xfrm_policy_queue polq; 59246ca5f5dSArnaldo Carvalho de Melo u8 type; 59346ca5f5dSArnaldo Carvalho de Melo u8 action; 59446ca5f5dSArnaldo Carvalho de Melo u8 flags; 59546ca5f5dSArnaldo Carvalho de Melo u8 xfrm_nr; 59612a169e7SHerbert Xu u16 family; 597df71837dSTrent Jaeger struct xfrm_sec_ctx *security; 5981da177e4SLinus Torvalds struct xfrm_tmpl xfrm_vec[XFRM_MAX_DEPTH]; 59956f04730SEric Dumazet struct rcu_head rcu; 6001da177e4SLinus Torvalds }; 6011da177e4SLinus Torvalds 60263eb23f5SDavid S. Miller static inline struct net *xp_net(const struct xfrm_policy *xp) 6030331b1f3SAlexey Dobriyan { 6040331b1f3SAlexey Dobriyan return read_pnet(&xp->xp_net); 6050331b1f3SAlexey Dobriyan } 6060331b1f3SAlexey Dobriyan 60713c1d189SArnaud Ebalard struct xfrm_kmaddress { 60813c1d189SArnaud Ebalard xfrm_address_t local; 60913c1d189SArnaud Ebalard xfrm_address_t remote; 61013c1d189SArnaud Ebalard u32 reserved; 61113c1d189SArnaud Ebalard u16 family; 61213c1d189SArnaud Ebalard }; 61313c1d189SArnaud Ebalard 61480c9abaaSShinta Sugimoto struct xfrm_migrate { 61580c9abaaSShinta Sugimoto xfrm_address_t old_daddr; 61680c9abaaSShinta Sugimoto xfrm_address_t old_saddr; 61780c9abaaSShinta Sugimoto xfrm_address_t new_daddr; 61880c9abaaSShinta Sugimoto xfrm_address_t new_saddr; 61980c9abaaSShinta Sugimoto u8 proto; 62080c9abaaSShinta Sugimoto u8 mode; 62180c9abaaSShinta Sugimoto u16 reserved; 62280c9abaaSShinta Sugimoto u32 reqid; 62380c9abaaSShinta Sugimoto u16 old_family; 62480c9abaaSShinta Sugimoto u16 new_family; 62580c9abaaSShinta Sugimoto }; 62680c9abaaSShinta Sugimoto 6271da177e4SLinus Torvalds #define XFRM_KM_TIMEOUT 30 628f8cd5488SJamal Hadi Salim /* what happened */ 629f8cd5488SJamal Hadi Salim #define XFRM_REPLAY_UPDATE XFRM_AE_CR 630f8cd5488SJamal Hadi Salim #define XFRM_REPLAY_TIMEOUT XFRM_AE_CE 631f8cd5488SJamal Hadi Salim 632f8cd5488SJamal Hadi Salim /* default aevent timeout in units of 100ms */ 633f8cd5488SJamal Hadi Salim #define XFRM_AE_ETIME 10 634f8cd5488SJamal Hadi Salim /* Async Event timer multiplier */ 635f8cd5488SJamal Hadi Salim #define XFRM_AE_ETH_M 10 636f8cd5488SJamal Hadi Salim /* default seq threshold size */ 637f8cd5488SJamal Hadi Salim #define XFRM_AE_SEQT_SIZE 2 6381da177e4SLinus Torvalds 639fd2c3ef7SEric Dumazet struct xfrm_mgr { 6401da177e4SLinus Torvalds struct list_head list; 641214e005bSDavid S. Miller int (*notify)(struct xfrm_state *x, const struct km_event *c); 64265e0736bSFan Du int (*acquire)(struct xfrm_state *x, struct xfrm_tmpl *, struct xfrm_policy *xp); 643cb969f07SVenkat Yekkirala struct xfrm_policy *(*compile_policy)(struct sock *sk, int opt, u8 *data, int len, int *dir); 6445d36b180SAl Viro int (*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport); 645214e005bSDavid S. Miller int (*notify_policy)(struct xfrm_policy *x, int dir, const struct km_event *c); 646db983c11SAlexey Dobriyan int (*report)(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr); 647183cad12SDavid S. Miller int (*migrate)(const struct xfrm_selector *sel, 648183cad12SDavid S. Miller u8 dir, u8 type, 649183cad12SDavid S. Miller const struct xfrm_migrate *m, 650183cad12SDavid S. Miller int num_bundles, 6518bafd730SAntony Antony const struct xfrm_kmaddress *k, 6528bafd730SAntony Antony const struct xfrm_encap_tmpl *encap); 6530f24558eSHoria Geanta bool (*is_alive)(const struct km_event *c); 6541da177e4SLinus Torvalds }; 6551da177e4SLinus Torvalds 656d511337aSJoe Perches int xfrm_register_km(struct xfrm_mgr *km); 657d511337aSJoe Perches int xfrm_unregister_km(struct xfrm_mgr *km); 6581da177e4SLinus Torvalds 65970be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb { 66070be6c91SSteffen Klassert union { 66170be6c91SSteffen Klassert struct inet_skb_parm h4; 66270be6c91SSteffen Klassert struct inet6_skb_parm h6; 66370be6c91SSteffen Klassert } header; 66470be6c91SSteffen Klassert 66570be6c91SSteffen Klassert union { 66670be6c91SSteffen Klassert struct ip_tunnel *ip4; 66770be6c91SSteffen Klassert struct ip6_tnl *ip6; 66870be6c91SSteffen Klassert } tunnel; 66970be6c91SSteffen Klassert }; 67070be6c91SSteffen Klassert 67170be6c91SSteffen Klassert #define XFRM_TUNNEL_SKB_CB(__skb) ((struct xfrm_tunnel_skb_cb *)&((__skb)->cb[0])) 67270be6c91SSteffen Klassert 673436a0a40SHerbert Xu /* 674436a0a40SHerbert Xu * This structure is used for the duration where packets are being 675436a0a40SHerbert Xu * transformed by IPsec. As soon as the packet leaves IPsec the 676436a0a40SHerbert Xu * area beyond the generic IP part may be overwritten. 677436a0a40SHerbert Xu */ 678436a0a40SHerbert Xu struct xfrm_skb_cb { 67970be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 680436a0a40SHerbert Xu 681436a0a40SHerbert Xu /* Sequence number for replay protection. */ 682b318e0e4SHerbert Xu union { 6831ce3644aSSteffen Klassert struct { 6841ce3644aSSteffen Klassert __u32 low; 6851ce3644aSSteffen Klassert __u32 hi; 6861ce3644aSSteffen Klassert } output; 6871ce3644aSSteffen Klassert struct { 6881ce3644aSSteffen Klassert __be32 low; 6891ce3644aSSteffen Klassert __be32 hi; 6901ce3644aSSteffen Klassert } input; 691b318e0e4SHerbert Xu } seq; 692436a0a40SHerbert Xu }; 693436a0a40SHerbert Xu 694436a0a40SHerbert Xu #define XFRM_SKB_CB(__skb) ((struct xfrm_skb_cb *)&((__skb)->cb[0])) 695436a0a40SHerbert Xu 69636cf9acfSHerbert Xu /* 69736cf9acfSHerbert Xu * This structure is used by the afinfo prepare_input/prepare_output functions 69836cf9acfSHerbert Xu * to transmit header information to the mode input/output functions. 69936cf9acfSHerbert Xu */ 70036cf9acfSHerbert Xu struct xfrm_mode_skb_cb { 70170be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 70236cf9acfSHerbert Xu 70336cf9acfSHerbert Xu /* Copied from header for IPv4, always set to zero and DF for IPv6. */ 70436cf9acfSHerbert Xu __be16 id; 70536cf9acfSHerbert Xu __be16 frag_off; 70636cf9acfSHerbert Xu 707732c8bd5SHerbert Xu /* IP header length (excluding options or extension headers). */ 708732c8bd5SHerbert Xu u8 ihl; 709732c8bd5SHerbert Xu 71036cf9acfSHerbert Xu /* TOS for IPv4, class for IPv6. */ 71136cf9acfSHerbert Xu u8 tos; 71236cf9acfSHerbert Xu 71336cf9acfSHerbert Xu /* TTL for IPv4, hop limitfor IPv6. */ 71436cf9acfSHerbert Xu u8 ttl; 71536cf9acfSHerbert Xu 71636cf9acfSHerbert Xu /* Protocol for IPv4, NH for IPv6. */ 71736cf9acfSHerbert Xu u8 protocol; 71836cf9acfSHerbert Xu 719732c8bd5SHerbert Xu /* Option length for IPv4, zero for IPv6. */ 720732c8bd5SHerbert Xu u8 optlen; 721732c8bd5SHerbert Xu 72236cf9acfSHerbert Xu /* Used by IPv6 only, zero for IPv4. */ 72336cf9acfSHerbert Xu u8 flow_lbl[3]; 72436cf9acfSHerbert Xu }; 72536cf9acfSHerbert Xu 72636cf9acfSHerbert Xu #define XFRM_MODE_SKB_CB(__skb) ((struct xfrm_mode_skb_cb *)&((__skb)->cb[0])) 72736cf9acfSHerbert Xu 728716062fdSHerbert Xu /* 729716062fdSHerbert Xu * This structure is used by the input processing to locate the SPI and 730716062fdSHerbert Xu * related information. 731716062fdSHerbert Xu */ 732716062fdSHerbert Xu struct xfrm_spi_skb_cb { 73370be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 734716062fdSHerbert Xu 735716062fdSHerbert Xu unsigned int daddroff; 7362fcb45b6SHerbert Xu unsigned int family; 7377785bba2SSteffen Klassert __be32 seq; 738716062fdSHerbert Xu }; 739716062fdSHerbert Xu 740716062fdSHerbert Xu #define XFRM_SPI_SKB_CB(__skb) ((struct xfrm_spi_skb_cb *)&((__skb)->cb[0])) 741716062fdSHerbert Xu 742c9204d9cSJoy Latten #ifdef CONFIG_AUDITSYSCALL 743afeb14b4SPaul Moore static inline struct audit_buffer *xfrm_audit_start(const char *op) 744ab5f5e8bSJoy Latten { 745ab5f5e8bSJoy Latten struct audit_buffer *audit_buf = NULL; 746ab5f5e8bSJoy Latten 747f7859590SRichard Guy Briggs if (audit_enabled == AUDIT_OFF) 748afeb14b4SPaul Moore return NULL; 749cdfb6b34SRichard Guy Briggs audit_buf = audit_log_start(audit_context(), GFP_ATOMIC, 750ab5f5e8bSJoy Latten AUDIT_MAC_IPSEC_EVENT); 751ab5f5e8bSJoy Latten if (audit_buf == NULL) 752ab5f5e8bSJoy Latten return NULL; 753afeb14b4SPaul Moore audit_log_format(audit_buf, "op=%s", op); 754afeb14b4SPaul Moore return audit_buf; 755afeb14b4SPaul Moore } 756afeb14b4SPaul Moore 7572e71029eSTetsuo Handa static inline void xfrm_audit_helper_usrinfo(bool task_valid, 758afeb14b4SPaul Moore struct audit_buffer *audit_buf) 759afeb14b4SPaul Moore { 7602e71029eSTetsuo Handa const unsigned int auid = from_kuid(&init_user_ns, task_valid ? 7612e71029eSTetsuo Handa audit_get_loginuid(current) : 7622e71029eSTetsuo Handa INVALID_UID); 7632e71029eSTetsuo Handa const unsigned int ses = task_valid ? audit_get_sessionid(current) : 764f0b75216SRichard Guy Briggs AUDIT_SID_UNSET; 7652e71029eSTetsuo Handa 7662e71029eSTetsuo Handa audit_log_format(audit_buf, " auid=%u ses=%u", auid, ses); 767ab5f5e8bSJoy Latten audit_log_task_context(audit_buf); 768ab5f5e8bSJoy Latten } 769ab5f5e8bSJoy Latten 7702e71029eSTetsuo Handa void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, bool task_valid); 7712e71029eSTetsuo Handa void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result, 7722e71029eSTetsuo Handa bool task_valid); 7732e71029eSTetsuo Handa void xfrm_audit_state_add(struct xfrm_state *x, int result, bool task_valid); 7742e71029eSTetsuo Handa void xfrm_audit_state_delete(struct xfrm_state *x, int result, bool task_valid); 775d511337aSJoe Perches void xfrm_audit_state_replay_overflow(struct xfrm_state *x, 776afeb14b4SPaul Moore struct sk_buff *skb); 777d511337aSJoe Perches void xfrm_audit_state_replay(struct xfrm_state *x, struct sk_buff *skb, 778d511337aSJoe Perches __be32 net_seq); 779d511337aSJoe Perches void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family); 780d511337aSJoe Perches void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, __be32 net_spi, 781d511337aSJoe Perches __be32 net_seq); 782d511337aSJoe Perches void xfrm_audit_state_icvfail(struct xfrm_state *x, struct sk_buff *skb, 783d511337aSJoe Perches u8 proto); 784c9204d9cSJoy Latten #else 78541fef0eeSMarcin Slusarz 78641fef0eeSMarcin Slusarz static inline void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, 7872e71029eSTetsuo Handa bool task_valid) 78841fef0eeSMarcin Slusarz { 78941fef0eeSMarcin Slusarz } 79041fef0eeSMarcin Slusarz 79141fef0eeSMarcin Slusarz static inline void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result, 7922e71029eSTetsuo Handa bool task_valid) 79341fef0eeSMarcin Slusarz { 79441fef0eeSMarcin Slusarz } 79541fef0eeSMarcin Slusarz 79641fef0eeSMarcin Slusarz static inline void xfrm_audit_state_add(struct xfrm_state *x, int result, 7972e71029eSTetsuo Handa bool task_valid) 79841fef0eeSMarcin Slusarz { 79941fef0eeSMarcin Slusarz } 80041fef0eeSMarcin Slusarz 80141fef0eeSMarcin Slusarz static inline void xfrm_audit_state_delete(struct xfrm_state *x, int result, 8022e71029eSTetsuo Handa bool task_valid) 80341fef0eeSMarcin Slusarz { 80441fef0eeSMarcin Slusarz } 80541fef0eeSMarcin Slusarz 80641fef0eeSMarcin Slusarz static inline void xfrm_audit_state_replay_overflow(struct xfrm_state *x, 80741fef0eeSMarcin Slusarz struct sk_buff *skb) 80841fef0eeSMarcin Slusarz { 80941fef0eeSMarcin Slusarz } 81041fef0eeSMarcin Slusarz 8119fdc4883SSteffen Klassert static inline void xfrm_audit_state_replay(struct xfrm_state *x, 8129fdc4883SSteffen Klassert struct sk_buff *skb, __be32 net_seq) 8139fdc4883SSteffen Klassert { 8149fdc4883SSteffen Klassert } 8159fdc4883SSteffen Klassert 81641fef0eeSMarcin Slusarz static inline void xfrm_audit_state_notfound_simple(struct sk_buff *skb, 81741fef0eeSMarcin Slusarz u16 family) 81841fef0eeSMarcin Slusarz { 81941fef0eeSMarcin Slusarz } 82041fef0eeSMarcin Slusarz 82141fef0eeSMarcin Slusarz static inline void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, 82241fef0eeSMarcin Slusarz __be32 net_spi, __be32 net_seq) 82341fef0eeSMarcin Slusarz { 82441fef0eeSMarcin Slusarz } 82541fef0eeSMarcin Slusarz 82641fef0eeSMarcin Slusarz static inline void xfrm_audit_state_icvfail(struct xfrm_state *x, 82741fef0eeSMarcin Slusarz struct sk_buff *skb, u8 proto) 82841fef0eeSMarcin Slusarz { 82941fef0eeSMarcin Slusarz } 830c9204d9cSJoy Latten #endif /* CONFIG_AUDITSYSCALL */ 831161a09e7SJoy Latten 8321da177e4SLinus Torvalds static inline void xfrm_pol_hold(struct xfrm_policy *policy) 8331da177e4SLinus Torvalds { 8341da177e4SLinus Torvalds if (likely(policy != NULL)) 835850a6212SReshetova, Elena refcount_inc(&policy->refcnt); 8361da177e4SLinus Torvalds } 8371da177e4SLinus Torvalds 838d511337aSJoe Perches void xfrm_policy_destroy(struct xfrm_policy *policy); 8391da177e4SLinus Torvalds 8401da177e4SLinus Torvalds static inline void xfrm_pol_put(struct xfrm_policy *policy) 8411da177e4SLinus Torvalds { 842850a6212SReshetova, Elena if (refcount_dec_and_test(&policy->refcnt)) 84364c31b3fSWANG Cong xfrm_policy_destroy(policy); 8441da177e4SLinus Torvalds } 8451da177e4SLinus Torvalds 8464e81bb83SMasahide NAKAMURA static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols) 8474e81bb83SMasahide NAKAMURA { 8484e81bb83SMasahide NAKAMURA int i; 8494e81bb83SMasahide NAKAMURA for (i = npols - 1; i >= 0; --i) 8504e81bb83SMasahide NAKAMURA xfrm_pol_put(pols[i]); 8514e81bb83SMasahide NAKAMURA } 8524e81bb83SMasahide NAKAMURA 853d511337aSJoe Perches void __xfrm_state_destroy(struct xfrm_state *); 8541da177e4SLinus Torvalds 85521380b81SHerbert Xu static inline void __xfrm_state_put(struct xfrm_state *x) 85621380b81SHerbert Xu { 85788755e9cSReshetova, Elena refcount_dec(&x->refcnt); 85821380b81SHerbert Xu } 85921380b81SHerbert Xu 8601da177e4SLinus Torvalds static inline void xfrm_state_put(struct xfrm_state *x) 8611da177e4SLinus Torvalds { 86288755e9cSReshetova, Elena if (refcount_dec_and_test(&x->refcnt)) 8631da177e4SLinus Torvalds __xfrm_state_destroy(x); 8641da177e4SLinus Torvalds } 8651da177e4SLinus Torvalds 8661da177e4SLinus Torvalds static inline void xfrm_state_hold(struct xfrm_state *x) 8671da177e4SLinus Torvalds { 86888755e9cSReshetova, Elena refcount_inc(&x->refcnt); 8691da177e4SLinus Torvalds } 8701da177e4SLinus Torvalds 8711744a8feSDavid S. Miller static inline bool addr_match(const void *token1, const void *token2, 872e1b0048eSAlexey Dobriyan unsigned int prefixlen) 8731da177e4SLinus Torvalds { 8741744a8feSDavid S. Miller const __be32 *a1 = token1; 8751744a8feSDavid S. Miller const __be32 *a2 = token2; 876e1b0048eSAlexey Dobriyan unsigned int pdw; 877e1b0048eSAlexey Dobriyan unsigned int pbi; 8781da177e4SLinus Torvalds 879a6337463Sjamal pdw = prefixlen >> 5; /* num of whole u32 in prefix */ 8801da177e4SLinus Torvalds pbi = prefixlen & 0x1f; /* num of bits in incomplete u32 in prefix */ 8811da177e4SLinus Torvalds 8821da177e4SLinus Torvalds if (pdw) 8831da177e4SLinus Torvalds if (memcmp(a1, a2, pdw << 2)) 8841744a8feSDavid S. Miller return false; 8851da177e4SLinus Torvalds 8861da177e4SLinus Torvalds if (pbi) { 8875f19343fSAl Viro __be32 mask; 8881da177e4SLinus Torvalds 8891da177e4SLinus Torvalds mask = htonl((0xffffffff) << (32 - pbi)); 8901da177e4SLinus Torvalds 8911da177e4SLinus Torvalds if ((a1[pdw] ^ a2[pdw]) & mask) 8921744a8feSDavid S. Miller return false; 8931da177e4SLinus Torvalds } 8941da177e4SLinus Torvalds 8951744a8feSDavid S. Miller return true; 8961da177e4SLinus Torvalds } 8971da177e4SLinus Torvalds 89826bff940SAlexey Dobriyan static inline bool addr4_match(__be32 a1, __be32 a2, u8 prefixlen) 89926bff940SAlexey Dobriyan { 90026bff940SAlexey Dobriyan /* C99 6.5.7 (3): u32 << 32 is undefined behaviour */ 9016c786bcbSAlexey Dobriyan if (sizeof(long) == 4 && prefixlen == 0) 90226bff940SAlexey Dobriyan return true; 9036c786bcbSAlexey Dobriyan return !((a1 ^ a2) & htonl(~0UL << (32 - prefixlen))); 90426bff940SAlexey Dobriyan } 90526bff940SAlexey Dobriyan 9061da177e4SLinus Torvalds static __inline__ 9076281dcc9SDavid S. Miller __be16 xfrm_flowi_sport(const struct flowi *fl, const union flowi_uli *uli) 9081da177e4SLinus Torvalds { 909f9d07e41SAl Viro __be16 port; 9101d28f42cSDavid S. Miller switch(fl->flowi_proto) { 9111da177e4SLinus Torvalds case IPPROTO_TCP: 9121da177e4SLinus Torvalds case IPPROTO_UDP: 913ba4e58ecSGerrit Renker case IPPROTO_UDPLITE: 9141da177e4SLinus Torvalds case IPPROTO_SCTP: 9156281dcc9SDavid S. Miller port = uli->ports.sport; 9161da177e4SLinus Torvalds break; 9171da177e4SLinus Torvalds case IPPROTO_ICMP: 9181da177e4SLinus Torvalds case IPPROTO_ICMPV6: 9196281dcc9SDavid S. Miller port = htons(uli->icmpt.type); 9201da177e4SLinus Torvalds break; 9212ce4272aSMasahide NAKAMURA case IPPROTO_MH: 9226281dcc9SDavid S. Miller port = htons(uli->mht.type); 9232ce4272aSMasahide NAKAMURA break; 924cc9ff19dSTimo Teräs case IPPROTO_GRE: 9256281dcc9SDavid S. Miller port = htons(ntohl(uli->gre_key) >> 16); 926cc9ff19dSTimo Teräs break; 9271da177e4SLinus Torvalds default: 9281da177e4SLinus Torvalds port = 0; /*XXX*/ 9291da177e4SLinus Torvalds } 9301da177e4SLinus Torvalds return port; 9311da177e4SLinus Torvalds } 9321da177e4SLinus Torvalds 9331da177e4SLinus Torvalds static __inline__ 9346281dcc9SDavid S. Miller __be16 xfrm_flowi_dport(const struct flowi *fl, const union flowi_uli *uli) 9351da177e4SLinus Torvalds { 936f9d07e41SAl Viro __be16 port; 9371d28f42cSDavid S. Miller switch(fl->flowi_proto) { 9381da177e4SLinus Torvalds case IPPROTO_TCP: 9391da177e4SLinus Torvalds case IPPROTO_UDP: 940ba4e58ecSGerrit Renker case IPPROTO_UDPLITE: 9411da177e4SLinus Torvalds case IPPROTO_SCTP: 9426281dcc9SDavid S. Miller port = uli->ports.dport; 9431da177e4SLinus Torvalds break; 9441da177e4SLinus Torvalds case IPPROTO_ICMP: 9451da177e4SLinus Torvalds case IPPROTO_ICMPV6: 9466281dcc9SDavid S. Miller port = htons(uli->icmpt.code); 9471da177e4SLinus Torvalds break; 948cc9ff19dSTimo Teräs case IPPROTO_GRE: 9496281dcc9SDavid S. Miller port = htons(ntohl(uli->gre_key) & 0xffff); 950cc9ff19dSTimo Teräs break; 9511da177e4SLinus Torvalds default: 9521da177e4SLinus Torvalds port = 0; /*XXX*/ 9531da177e4SLinus Torvalds } 9541da177e4SLinus Torvalds return port; 9551da177e4SLinus Torvalds } 9561da177e4SLinus Torvalds 957d511337aSJoe Perches bool xfrm_selector_match(const struct xfrm_selector *sel, 958d511337aSJoe Perches const struct flowi *fl, unsigned short family); 9591da177e4SLinus Torvalds 960df71837dSTrent Jaeger #ifdef CONFIG_SECURITY_NETWORK_XFRM 961df71837dSTrent Jaeger /* If neither has a context --> match 962df71837dSTrent Jaeger * Otherwise, both must have a context and the sids, doi, alg must match 963df71837dSTrent Jaeger */ 964bc9b35adSDavid S. Miller static inline bool xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2) 965df71837dSTrent Jaeger { 966df71837dSTrent Jaeger return ((!s1 && !s2) || 967df71837dSTrent Jaeger (s1 && s2 && 968df71837dSTrent Jaeger (s1->ctx_sid == s2->ctx_sid) && 969df71837dSTrent Jaeger (s1->ctx_doi == s2->ctx_doi) && 970df71837dSTrent Jaeger (s1->ctx_alg == s2->ctx_alg))); 971df71837dSTrent Jaeger } 972df71837dSTrent Jaeger #else 973bc9b35adSDavid S. Miller static inline bool xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2) 974df71837dSTrent Jaeger { 975bc9b35adSDavid S. Miller return true; 976df71837dSTrent Jaeger } 977df71837dSTrent Jaeger #endif 978df71837dSTrent Jaeger 9791da177e4SLinus Torvalds /* A struct encoding bundle of transformations to apply to some set of flow. 9801da177e4SLinus Torvalds * 981b6ca8bd5SDavid Miller * xdst->child points to the next element of bundle. 9821da177e4SLinus Torvalds * dst->xfrm points to an instanse of transformer. 9831da177e4SLinus Torvalds * 9841da177e4SLinus Torvalds * Due to unfortunate limitations of current routing cache, which we 9851da177e4SLinus Torvalds * have no time to fix, it mirrors struct rtable and bound to the same 9861da177e4SLinus Torvalds * routing key, including saddr,daddr. However, we can have many of 9871da177e4SLinus Torvalds * bundles differing by session id. All the bundles grow from a parent 9881da177e4SLinus Torvalds * policy rule. 9891da177e4SLinus Torvalds */ 990fd2c3ef7SEric Dumazet struct xfrm_dst { 9911da177e4SLinus Torvalds union { 9921da177e4SLinus Torvalds struct dst_entry dst; 9931da177e4SLinus Torvalds struct rtable rt; 9941da177e4SLinus Torvalds struct rt6_info rt6; 9951da177e4SLinus Torvalds } u; 9961da177e4SLinus Torvalds struct dst_entry *route; 997b6ca8bd5SDavid Miller struct dst_entry *child; 9980f6c480fSDavid Miller struct dst_entry *path; 99980c802f3STimo Teräs struct xfrm_policy *pols[XFRM_POLICY_TYPE_MAX]; 100080c802f3STimo Teräs int num_pols, num_xfrms; 100180c802f3STimo Teräs u32 xfrm_genid; 100280c802f3STimo Teräs u32 policy_genid; 10031da177e4SLinus Torvalds u32 route_mtu_cached; 10041da177e4SLinus Torvalds u32 child_mtu_cached; 100592d63decSHideaki YOSHIFUJI u32 route_cookie; 100692d63decSHideaki YOSHIFUJI u32 path_cookie; 10071da177e4SLinus Torvalds }; 10081da177e4SLinus Torvalds 10090f6c480fSDavid Miller static inline struct dst_entry *xfrm_dst_path(const struct dst_entry *dst) 10100f6c480fSDavid Miller { 10110f6c480fSDavid Miller #ifdef CONFIG_XFRM 10120f6c480fSDavid Miller if (dst->xfrm) { 10130f6c480fSDavid Miller const struct xfrm_dst *xdst = (const struct xfrm_dst *) dst; 10140f6c480fSDavid Miller 10150f6c480fSDavid Miller return xdst->path; 10160f6c480fSDavid Miller } 10170f6c480fSDavid Miller #endif 10180f6c480fSDavid Miller return (struct dst_entry *) dst; 10190f6c480fSDavid Miller } 10200f6c480fSDavid Miller 1021b92cf4aaSDavid Miller static inline struct dst_entry *xfrm_dst_child(const struct dst_entry *dst) 1022b92cf4aaSDavid Miller { 1023b92cf4aaSDavid Miller #ifdef CONFIG_XFRM 1024b6ca8bd5SDavid Miller if (dst->xfrm) { 1025b6ca8bd5SDavid Miller struct xfrm_dst *xdst = (struct xfrm_dst *) dst; 1026b6ca8bd5SDavid Miller return xdst->child; 1027b6ca8bd5SDavid Miller } 1028b92cf4aaSDavid Miller #endif 1029b92cf4aaSDavid Miller return NULL; 1030b92cf4aaSDavid Miller } 1031b92cf4aaSDavid Miller 1032def8b4faSAlexey Dobriyan #ifdef CONFIG_XFRM 103345b018beSDavid Miller static inline void xfrm_dst_set_child(struct xfrm_dst *xdst, struct dst_entry *child) 103445b018beSDavid Miller { 1035b6ca8bd5SDavid Miller xdst->child = child; 103645b018beSDavid Miller } 103745b018beSDavid Miller 1038aabc9761SHerbert Xu static inline void xfrm_dst_destroy(struct xfrm_dst *xdst) 1039aabc9761SHerbert Xu { 104080c802f3STimo Teräs xfrm_pols_put(xdst->pols, xdst->num_pols); 1041aabc9761SHerbert Xu dst_release(xdst->route); 1042aabc9761SHerbert Xu if (likely(xdst->u.dst.xfrm)) 1043aabc9761SHerbert Xu xfrm_state_put(xdst->u.dst.xfrm); 1044aabc9761SHerbert Xu } 1045def8b4faSAlexey Dobriyan #endif 1046aabc9761SHerbert Xu 1047d511337aSJoe Perches void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev); 1048aabc9761SHerbert Xu 1049f203b76dSSteffen Klassert struct xfrm_if_parms { 1050f203b76dSSteffen Klassert char name[IFNAMSIZ]; /* name of XFRM device */ 1051f203b76dSSteffen Klassert int link; /* ifindex of underlying L2 interface */ 1052f203b76dSSteffen Klassert u32 if_id; /* interface identifyer */ 1053f203b76dSSteffen Klassert }; 1054f203b76dSSteffen Klassert 1055f203b76dSSteffen Klassert struct xfrm_if { 1056f203b76dSSteffen Klassert struct xfrm_if __rcu *next; /* next interface in list */ 1057f203b76dSSteffen Klassert struct net_device *dev; /* virtual device associated with interface */ 1058f203b76dSSteffen Klassert struct net_device *phydev; /* physical device */ 1059f203b76dSSteffen Klassert struct net *net; /* netns for packet i/o */ 1060f203b76dSSteffen Klassert struct xfrm_if_parms p; /* interface parms */ 1061f203b76dSSteffen Klassert 1062f203b76dSSteffen Klassert struct gro_cells gro_cells; 1063f203b76dSSteffen Klassert }; 1064f203b76dSSteffen Klassert 106554ef207aSSteffen Klassert struct xfrm_offload { 106654ef207aSSteffen Klassert /* Output sequence number for replay protection on offloading. */ 106754ef207aSSteffen Klassert struct { 106854ef207aSSteffen Klassert __u32 low; 106954ef207aSSteffen Klassert __u32 hi; 107054ef207aSSteffen Klassert } seq; 107154ef207aSSteffen Klassert 107254ef207aSSteffen Klassert __u32 flags; 107354ef207aSSteffen Klassert #define SA_DELETE_REQ 1 107454ef207aSSteffen Klassert #define CRYPTO_DONE 2 107554ef207aSSteffen Klassert #define CRYPTO_NEXT_DONE 4 107654ef207aSSteffen Klassert #define CRYPTO_FALLBACK 8 107754ef207aSSteffen Klassert #define XFRM_GSO_SEGMENT 16 107854ef207aSSteffen Klassert #define XFRM_GRO 32 107947ebcc0bSYossi Kuperman #define XFRM_ESP_NO_TRAILER 64 1080f53c7239SSteffen Klassert #define XFRM_DEV_RESUME 128 108154ef207aSSteffen Klassert 108254ef207aSSteffen Klassert __u32 status; 108354ef207aSSteffen Klassert #define CRYPTO_SUCCESS 1 108454ef207aSSteffen Klassert #define CRYPTO_GENERIC_ERROR 2 108554ef207aSSteffen Klassert #define CRYPTO_TRANSPORT_AH_AUTH_FAILED 4 108654ef207aSSteffen Klassert #define CRYPTO_TRANSPORT_ESP_AUTH_FAILED 8 108754ef207aSSteffen Klassert #define CRYPTO_TUNNEL_AH_AUTH_FAILED 16 108854ef207aSSteffen Klassert #define CRYPTO_TUNNEL_ESP_AUTH_FAILED 32 108954ef207aSSteffen Klassert #define CRYPTO_INVALID_PACKET_SYNTAX 64 109054ef207aSSteffen Klassert #define CRYPTO_INVALID_PROTOCOL 128 109154ef207aSSteffen Klassert 109254ef207aSSteffen Klassert __u8 proto; 109354ef207aSSteffen Klassert }; 109454ef207aSSteffen Klassert 1095fd2c3ef7SEric Dumazet struct sec_path { 109655eabed6SReshetova, Elena refcount_t refcnt; 10971da177e4SLinus Torvalds int len; 109854ef207aSSteffen Klassert int olen; 109954ef207aSSteffen Klassert 1100dbe5b4aaSHerbert Xu struct xfrm_state *xvec[XFRM_MAX_DEPTH]; 110154ef207aSSteffen Klassert struct xfrm_offload ovec[XFRM_MAX_OFFLOAD_DEPTH]; 11021da177e4SLinus Torvalds }; 11031da177e4SLinus Torvalds 1104990078afSMichael Smith static inline int secpath_exists(struct sk_buff *skb) 1105990078afSMichael Smith { 1106990078afSMichael Smith #ifdef CONFIG_XFRM 1107990078afSMichael Smith return skb->sp != NULL; 1108990078afSMichael Smith #else 1109990078afSMichael Smith return 0; 1110990078afSMichael Smith #endif 1111990078afSMichael Smith } 1112990078afSMichael Smith 11131da177e4SLinus Torvalds static inline struct sec_path * 11141da177e4SLinus Torvalds secpath_get(struct sec_path *sp) 11151da177e4SLinus Torvalds { 11161da177e4SLinus Torvalds if (sp) 111755eabed6SReshetova, Elena refcount_inc(&sp->refcnt); 11181da177e4SLinus Torvalds return sp; 11191da177e4SLinus Torvalds } 11201da177e4SLinus Torvalds 1121d511337aSJoe Perches void __secpath_destroy(struct sec_path *sp); 11221da177e4SLinus Torvalds 11231da177e4SLinus Torvalds static inline void 11241da177e4SLinus Torvalds secpath_put(struct sec_path *sp) 11251da177e4SLinus Torvalds { 112655eabed6SReshetova, Elena if (sp && refcount_dec_and_test(&sp->refcnt)) 11271da177e4SLinus Torvalds __secpath_destroy(sp); 11281da177e4SLinus Torvalds } 11291da177e4SLinus Torvalds 1130d511337aSJoe Perches struct sec_path *secpath_dup(struct sec_path *src); 1131b0fcee82SSteffen Klassert int secpath_set(struct sk_buff *skb); 11321da177e4SLinus Torvalds 11331da177e4SLinus Torvalds static inline void 11341da177e4SLinus Torvalds secpath_reset(struct sk_buff *skb) 11351da177e4SLinus Torvalds { 11361da177e4SLinus Torvalds #ifdef CONFIG_XFRM 11371da177e4SLinus Torvalds secpath_put(skb->sp); 11381da177e4SLinus Torvalds skb->sp = NULL; 11391da177e4SLinus Torvalds #endif 11401da177e4SLinus Torvalds } 11411da177e4SLinus Torvalds 11421da177e4SLinus Torvalds static inline int 11436cc32961SDavid S. Miller xfrm_addr_any(const xfrm_address_t *addr, unsigned short family) 1144a1e59abfSPatrick McHardy { 1145a1e59abfSPatrick McHardy switch (family) { 1146a1e59abfSPatrick McHardy case AF_INET: 1147a1e59abfSPatrick McHardy return addr->a4 == 0; 1148a1e59abfSPatrick McHardy case AF_INET6: 114915e318bdSJiri Benc return ipv6_addr_any(&addr->in6); 1150a1e59abfSPatrick McHardy } 1151a1e59abfSPatrick McHardy return 0; 1152a1e59abfSPatrick McHardy } 1153a1e59abfSPatrick McHardy 1154a1e59abfSPatrick McHardy static inline int 115521eddb5cSDavid S. Miller __xfrm4_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x) 11561da177e4SLinus Torvalds { 11571da177e4SLinus Torvalds return (tmpl->saddr.a4 && 11581da177e4SLinus Torvalds tmpl->saddr.a4 != x->props.saddr.a4); 11591da177e4SLinus Torvalds } 11601da177e4SLinus Torvalds 11611da177e4SLinus Torvalds static inline int 116221eddb5cSDavid S. Miller __xfrm6_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x) 11631da177e4SLinus Torvalds { 11641da177e4SLinus Torvalds return (!ipv6_addr_any((struct in6_addr*)&tmpl->saddr) && 1165ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 !ipv6_addr_equal((struct in6_addr *)&tmpl->saddr, (struct in6_addr*)&x->props.saddr)); 11661da177e4SLinus Torvalds } 11671da177e4SLinus Torvalds 11681da177e4SLinus Torvalds static inline int 116921eddb5cSDavid S. Miller xfrm_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x, unsigned short family) 11701da177e4SLinus Torvalds { 11711da177e4SLinus Torvalds switch (family) { 11721da177e4SLinus Torvalds case AF_INET: 11731da177e4SLinus Torvalds return __xfrm4_state_addr_cmp(tmpl, x); 11741da177e4SLinus Torvalds case AF_INET6: 11751da177e4SLinus Torvalds return __xfrm6_state_addr_cmp(tmpl, x); 11761da177e4SLinus Torvalds } 11771da177e4SLinus Torvalds return !0; 11781da177e4SLinus Torvalds } 11791da177e4SLinus Torvalds 11801da177e4SLinus Torvalds #ifdef CONFIG_XFRM 1181d511337aSJoe Perches int __xfrm_policy_check(struct sock *, int dir, struct sk_buff *skb, 1182d511337aSJoe Perches unsigned short family); 11831da177e4SLinus Torvalds 1184d5422efeSHerbert Xu static inline int __xfrm_policy_check2(struct sock *sk, int dir, 1185d5422efeSHerbert Xu struct sk_buff *skb, 1186d5422efeSHerbert Xu unsigned int family, int reverse) 11871da177e4SLinus Torvalds { 1188f6e1e25dSAlexey Dobriyan struct net *net = dev_net(skb->dev); 1189d5422efeSHerbert Xu int ndir = dir | (reverse ? XFRM_POLICY_MASK + 1 : 0); 1190d5422efeSHerbert Xu 11911da177e4SLinus Torvalds if (sk && sk->sk_policy[XFRM_POLICY_IN]) 1192d5422efeSHerbert Xu return __xfrm_policy_check(sk, ndir, skb, family); 11931da177e4SLinus Torvalds 1194f6e1e25dSAlexey Dobriyan return (!net->xfrm.policy_count[dir] && !skb->sp) || 1195adf30907SEric Dumazet (skb_dst(skb)->flags & DST_NOPOLICY) || 1196d5422efeSHerbert Xu __xfrm_policy_check(sk, ndir, skb, family); 1197d5422efeSHerbert Xu } 1198d5422efeSHerbert Xu 1199d5422efeSHerbert Xu static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) 1200d5422efeSHerbert Xu { 1201d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, family, 0); 12021da177e4SLinus Torvalds } 12031da177e4SLinus Torvalds 12041da177e4SLinus Torvalds static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 12051da177e4SLinus Torvalds { 12061da177e4SLinus Torvalds return xfrm_policy_check(sk, dir, skb, AF_INET); 12071da177e4SLinus Torvalds } 12081da177e4SLinus Torvalds 12091da177e4SLinus Torvalds static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 12101da177e4SLinus Torvalds { 12111da177e4SLinus Torvalds return xfrm_policy_check(sk, dir, skb, AF_INET6); 12121da177e4SLinus Torvalds } 12131da177e4SLinus Torvalds 1214d5422efeSHerbert Xu static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir, 1215d5422efeSHerbert Xu struct sk_buff *skb) 1216d5422efeSHerbert Xu { 1217d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, AF_INET, 1); 1218d5422efeSHerbert Xu } 1219d5422efeSHerbert Xu 1220d5422efeSHerbert Xu static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, 1221d5422efeSHerbert Xu struct sk_buff *skb) 1222d5422efeSHerbert Xu { 1223d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, AF_INET6, 1); 1224d5422efeSHerbert Xu } 1225d5422efeSHerbert Xu 1226d511337aSJoe Perches int __xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, 1227d5422efeSHerbert Xu unsigned int family, int reverse); 1228d5422efeSHerbert Xu 1229d5422efeSHerbert Xu static inline int xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, 1230d5422efeSHerbert Xu unsigned int family) 1231d5422efeSHerbert Xu { 1232d5422efeSHerbert Xu return __xfrm_decode_session(skb, fl, family, 0); 1233d5422efeSHerbert Xu } 1234d5422efeSHerbert Xu 1235d5422efeSHerbert Xu static inline int xfrm_decode_session_reverse(struct sk_buff *skb, 1236d5422efeSHerbert Xu struct flowi *fl, 1237d5422efeSHerbert Xu unsigned int family) 1238d5422efeSHerbert Xu { 1239d5422efeSHerbert Xu return __xfrm_decode_session(skb, fl, family, 1); 1240d5422efeSHerbert Xu } 1241d5422efeSHerbert Xu 1242d511337aSJoe Perches int __xfrm_route_forward(struct sk_buff *skb, unsigned short family); 12431da177e4SLinus Torvalds 12441da177e4SLinus Torvalds static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family) 12451da177e4SLinus Torvalds { 124699a66657SAlexey Dobriyan struct net *net = dev_net(skb->dev); 124799a66657SAlexey Dobriyan 124899a66657SAlexey Dobriyan return !net->xfrm.policy_count[XFRM_POLICY_OUT] || 1249adf30907SEric Dumazet (skb_dst(skb)->flags & DST_NOXFRM) || 12501da177e4SLinus Torvalds __xfrm_route_forward(skb, family); 12511da177e4SLinus Torvalds } 12521da177e4SLinus Torvalds 12531da177e4SLinus Torvalds static inline int xfrm4_route_forward(struct sk_buff *skb) 12541da177e4SLinus Torvalds { 12551da177e4SLinus Torvalds return xfrm_route_forward(skb, AF_INET); 12561da177e4SLinus Torvalds } 12571da177e4SLinus Torvalds 12581da177e4SLinus Torvalds static inline int xfrm6_route_forward(struct sk_buff *skb) 12591da177e4SLinus Torvalds { 12601da177e4SLinus Torvalds return xfrm_route_forward(skb, AF_INET6); 12611da177e4SLinus Torvalds } 12621da177e4SLinus Torvalds 1263d188ba86SEric Dumazet int __xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk); 12641da177e4SLinus Torvalds 1265d188ba86SEric Dumazet static inline int xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk) 12661da177e4SLinus Torvalds { 1267d188ba86SEric Dumazet sk->sk_policy[0] = NULL; 1268d188ba86SEric Dumazet sk->sk_policy[1] = NULL; 1269d188ba86SEric Dumazet if (unlikely(osk->sk_policy[0] || osk->sk_policy[1])) 1270d188ba86SEric Dumazet return __xfrm_sk_clone_policy(sk, osk); 12711da177e4SLinus Torvalds return 0; 12721da177e4SLinus Torvalds } 12731da177e4SLinus Torvalds 1274d511337aSJoe Perches int xfrm_policy_delete(struct xfrm_policy *pol, int dir); 12751da177e4SLinus Torvalds 12761da177e4SLinus Torvalds static inline void xfrm_sk_free_policy(struct sock *sk) 12771da177e4SLinus Torvalds { 1278d188ba86SEric Dumazet struct xfrm_policy *pol; 1279d188ba86SEric Dumazet 1280d188ba86SEric Dumazet pol = rcu_dereference_protected(sk->sk_policy[0], 1); 1281d188ba86SEric Dumazet if (unlikely(pol != NULL)) { 1282d188ba86SEric Dumazet xfrm_policy_delete(pol, XFRM_POLICY_MAX); 12831da177e4SLinus Torvalds sk->sk_policy[0] = NULL; 12841da177e4SLinus Torvalds } 1285d188ba86SEric Dumazet pol = rcu_dereference_protected(sk->sk_policy[1], 1); 1286d188ba86SEric Dumazet if (unlikely(pol != NULL)) { 1287d188ba86SEric Dumazet xfrm_policy_delete(pol, XFRM_POLICY_MAX+1); 12881da177e4SLinus Torvalds sk->sk_policy[1] = NULL; 12891da177e4SLinus Torvalds } 12901da177e4SLinus Torvalds } 12911da177e4SLinus Torvalds 12921da177e4SLinus Torvalds #else 12931da177e4SLinus Torvalds 12941da177e4SLinus Torvalds static inline void xfrm_sk_free_policy(struct sock *sk) {} 1295d188ba86SEric Dumazet static inline int xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk) { return 0; } 12961da177e4SLinus Torvalds static inline int xfrm6_route_forward(struct sk_buff *skb) { return 1; } 12971da177e4SLinus Torvalds static inline int xfrm4_route_forward(struct sk_buff *skb) { return 1; } 12981da177e4SLinus Torvalds static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 12991da177e4SLinus Torvalds { 13001da177e4SLinus Torvalds return 1; 13011da177e4SLinus Torvalds } 13021da177e4SLinus Torvalds static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 13031da177e4SLinus Torvalds { 13041da177e4SLinus Torvalds return 1; 13051da177e4SLinus Torvalds } 13061da177e4SLinus Torvalds static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) 13071da177e4SLinus Torvalds { 13081da177e4SLinus Torvalds return 1; 13091da177e4SLinus Torvalds } 1310d5422efeSHerbert Xu static inline int xfrm_decode_session_reverse(struct sk_buff *skb, 1311d5422efeSHerbert Xu struct flowi *fl, 1312d5422efeSHerbert Xu unsigned int family) 1313d5422efeSHerbert Xu { 1314d5422efeSHerbert Xu return -ENOSYS; 1315d5422efeSHerbert Xu } 1316d5422efeSHerbert Xu static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir, 1317d5422efeSHerbert Xu struct sk_buff *skb) 1318d5422efeSHerbert Xu { 1319d5422efeSHerbert Xu return 1; 1320d5422efeSHerbert Xu } 1321d5422efeSHerbert Xu static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, 1322d5422efeSHerbert Xu struct sk_buff *skb) 1323d5422efeSHerbert Xu { 1324d5422efeSHerbert Xu return 1; 1325d5422efeSHerbert Xu } 13261da177e4SLinus Torvalds #endif 13271da177e4SLinus Torvalds 13281da177e4SLinus Torvalds static __inline__ 1329e8a4e377SDavid S. Miller xfrm_address_t *xfrm_flowi_daddr(const struct flowi *fl, unsigned short family) 13301da177e4SLinus Torvalds { 13311da177e4SLinus Torvalds switch (family){ 13321da177e4SLinus Torvalds case AF_INET: 13337e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip4.daddr; 13341da177e4SLinus Torvalds case AF_INET6: 13357e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip6.daddr; 13361da177e4SLinus Torvalds } 13371da177e4SLinus Torvalds return NULL; 13381da177e4SLinus Torvalds } 13391da177e4SLinus Torvalds 13401da177e4SLinus Torvalds static __inline__ 1341e8a4e377SDavid S. Miller xfrm_address_t *xfrm_flowi_saddr(const struct flowi *fl, unsigned short family) 13421da177e4SLinus Torvalds { 13431da177e4SLinus Torvalds switch (family){ 13441da177e4SLinus Torvalds case AF_INET: 13457e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip4.saddr; 13461da177e4SLinus Torvalds case AF_INET6: 13477e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip6.saddr; 13481da177e4SLinus Torvalds } 13491da177e4SLinus Torvalds return NULL; 13501da177e4SLinus Torvalds } 13511da177e4SLinus Torvalds 13529bb182a7SYOSHIFUJI Hideaki static __inline__ 1353e8a4e377SDavid S. Miller void xfrm_flowi_addr_get(const struct flowi *fl, 13549bb182a7SYOSHIFUJI Hideaki xfrm_address_t *saddr, xfrm_address_t *daddr, 13559bb182a7SYOSHIFUJI Hideaki unsigned short family) 13569bb182a7SYOSHIFUJI Hideaki { 13579bb182a7SYOSHIFUJI Hideaki switch(family) { 13589bb182a7SYOSHIFUJI Hideaki case AF_INET: 13597e1dc7b6SDavid S. Miller memcpy(&saddr->a4, &fl->u.ip4.saddr, sizeof(saddr->a4)); 13607e1dc7b6SDavid S. Miller memcpy(&daddr->a4, &fl->u.ip4.daddr, sizeof(daddr->a4)); 13619bb182a7SYOSHIFUJI Hideaki break; 13629bb182a7SYOSHIFUJI Hideaki case AF_INET6: 136315e318bdSJiri Benc saddr->in6 = fl->u.ip6.saddr; 136415e318bdSJiri Benc daddr->in6 = fl->u.ip6.daddr; 13659bb182a7SYOSHIFUJI Hideaki break; 13669bb182a7SYOSHIFUJI Hideaki } 13679bb182a7SYOSHIFUJI Hideaki } 13689bb182a7SYOSHIFUJI Hideaki 13691da177e4SLinus Torvalds static __inline__ int 1370f8848067SDavid S. Miller __xfrm4_state_addr_check(const struct xfrm_state *x, 1371f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr) 13721da177e4SLinus Torvalds { 13731da177e4SLinus Torvalds if (daddr->a4 == x->id.daddr.a4 && 13741da177e4SLinus Torvalds (saddr->a4 == x->props.saddr.a4 || !saddr->a4 || !x->props.saddr.a4)) 13751da177e4SLinus Torvalds return 1; 13761da177e4SLinus Torvalds return 0; 13771da177e4SLinus Torvalds } 13781da177e4SLinus Torvalds 13791da177e4SLinus Torvalds static __inline__ int 1380f8848067SDavid S. Miller __xfrm6_state_addr_check(const struct xfrm_state *x, 1381f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr) 13821da177e4SLinus Torvalds { 1383ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 if (ipv6_addr_equal((struct in6_addr *)daddr, (struct in6_addr *)&x->id.daddr) && 1384ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 (ipv6_addr_equal((struct in6_addr *)saddr, (struct in6_addr *)&x->props.saddr) || 13851da177e4SLinus Torvalds ipv6_addr_any((struct in6_addr *)saddr) || 13861da177e4SLinus Torvalds ipv6_addr_any((struct in6_addr *)&x->props.saddr))) 13871da177e4SLinus Torvalds return 1; 13881da177e4SLinus Torvalds return 0; 13891da177e4SLinus Torvalds } 13901da177e4SLinus Torvalds 13911da177e4SLinus Torvalds static __inline__ int 1392f8848067SDavid S. Miller xfrm_state_addr_check(const struct xfrm_state *x, 1393f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr, 13941da177e4SLinus Torvalds unsigned short family) 13951da177e4SLinus Torvalds { 13961da177e4SLinus Torvalds switch (family) { 13971da177e4SLinus Torvalds case AF_INET: 13981da177e4SLinus Torvalds return __xfrm4_state_addr_check(x, daddr, saddr); 13991da177e4SLinus Torvalds case AF_INET6: 14001da177e4SLinus Torvalds return __xfrm6_state_addr_check(x, daddr, saddr); 14011da177e4SLinus Torvalds } 14021da177e4SLinus Torvalds return 0; 14031da177e4SLinus Torvalds } 14041da177e4SLinus Torvalds 1405e53820deSMasahide NAKAMURA static __inline__ int 1406f8848067SDavid S. Miller xfrm_state_addr_flow_check(const struct xfrm_state *x, const struct flowi *fl, 1407e53820deSMasahide NAKAMURA unsigned short family) 1408e53820deSMasahide NAKAMURA { 1409e53820deSMasahide NAKAMURA switch (family) { 1410e53820deSMasahide NAKAMURA case AF_INET: 1411e53820deSMasahide NAKAMURA return __xfrm4_state_addr_check(x, 14127e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip4.daddr, 14137e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip4.saddr); 1414e53820deSMasahide NAKAMURA case AF_INET6: 1415e53820deSMasahide NAKAMURA return __xfrm6_state_addr_check(x, 14167e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip6.daddr, 14177e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip6.saddr); 1418e53820deSMasahide NAKAMURA } 1419e53820deSMasahide NAKAMURA return 0; 1420e53820deSMasahide NAKAMURA } 1421e53820deSMasahide NAKAMURA 1422f8848067SDavid S. Miller static inline int xfrm_state_kern(const struct xfrm_state *x) 14231da177e4SLinus Torvalds { 14241da177e4SLinus Torvalds return atomic_read(&x->tunnel_users); 14251da177e4SLinus Torvalds } 14261da177e4SLinus Torvalds 14275794708fSMasahide NAKAMURA static inline int xfrm_id_proto_match(u8 proto, u8 userproto) 14285794708fSMasahide NAKAMURA { 1429dc00a525SMasahide NAKAMURA return (!userproto || proto == userproto || 1430dc00a525SMasahide NAKAMURA (userproto == IPSEC_PROTO_ANY && (proto == IPPROTO_AH || 1431dc00a525SMasahide NAKAMURA proto == IPPROTO_ESP || 1432dc00a525SMasahide NAKAMURA proto == IPPROTO_COMP))); 14335794708fSMasahide NAKAMURA } 14345794708fSMasahide NAKAMURA 14351da177e4SLinus Torvalds /* 14361da177e4SLinus Torvalds * xfrm algorithm information 14371da177e4SLinus Torvalds */ 14381a6509d9SHerbert Xu struct xfrm_algo_aead_info { 1439165ecc63SHerbert Xu char *geniv; 14401a6509d9SHerbert Xu u16 icv_truncbits; 14411a6509d9SHerbert Xu }; 14421a6509d9SHerbert Xu 14431da177e4SLinus Torvalds struct xfrm_algo_auth_info { 14441da177e4SLinus Torvalds u16 icv_truncbits; 14451da177e4SLinus Torvalds u16 icv_fullbits; 14461da177e4SLinus Torvalds }; 14471da177e4SLinus Torvalds 14481da177e4SLinus Torvalds struct xfrm_algo_encr_info { 1449165ecc63SHerbert Xu char *geniv; 14501da177e4SLinus Torvalds u16 blockbits; 14511da177e4SLinus Torvalds u16 defkeybits; 14521da177e4SLinus Torvalds }; 14531da177e4SLinus Torvalds 14541da177e4SLinus Torvalds struct xfrm_algo_comp_info { 14551da177e4SLinus Torvalds u16 threshold; 14561da177e4SLinus Torvalds }; 14571da177e4SLinus Torvalds 14581da177e4SLinus Torvalds struct xfrm_algo_desc { 14591da177e4SLinus Torvalds char *name; 146004ff1260SHerbert Xu char *compat; 14611da177e4SLinus Torvalds u8 available:1; 14627e50f84cSJussi Kivilinna u8 pfkey_supported:1; 14631da177e4SLinus Torvalds union { 14641a6509d9SHerbert Xu struct xfrm_algo_aead_info aead; 14651da177e4SLinus Torvalds struct xfrm_algo_auth_info auth; 14661da177e4SLinus Torvalds struct xfrm_algo_encr_info encr; 14671da177e4SLinus Torvalds struct xfrm_algo_comp_info comp; 14681da177e4SLinus Torvalds } uinfo; 14691da177e4SLinus Torvalds struct sadb_alg desc; 14701da177e4SLinus Torvalds }; 14711da177e4SLinus Torvalds 14723328715eSSteffen Klassert /* XFRM protocol handlers. */ 14733328715eSSteffen Klassert struct xfrm4_protocol { 14743328715eSSteffen Klassert int (*handler)(struct sk_buff *skb); 14753328715eSSteffen Klassert int (*input_handler)(struct sk_buff *skb, int nexthdr, __be32 spi, 14763328715eSSteffen Klassert int encap_type); 14773328715eSSteffen Klassert int (*cb_handler)(struct sk_buff *skb, int err); 14783328715eSSteffen Klassert int (*err_handler)(struct sk_buff *skb, u32 info); 14793328715eSSteffen Klassert 14803328715eSSteffen Klassert struct xfrm4_protocol __rcu *next; 14813328715eSSteffen Klassert int priority; 14823328715eSSteffen Klassert }; 14833328715eSSteffen Klassert 14847e14ea15SSteffen Klassert struct xfrm6_protocol { 14857e14ea15SSteffen Klassert int (*handler)(struct sk_buff *skb); 14867e14ea15SSteffen Klassert int (*cb_handler)(struct sk_buff *skb, int err); 14877e14ea15SSteffen Klassert int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, 14887e14ea15SSteffen Klassert u8 type, u8 code, int offset, __be32 info); 14897e14ea15SSteffen Klassert 14907e14ea15SSteffen Klassert struct xfrm6_protocol __rcu *next; 14917e14ea15SSteffen Klassert int priority; 14927e14ea15SSteffen Klassert }; 14937e14ea15SSteffen Klassert 14941da177e4SLinus Torvalds /* XFRM tunnel handlers. */ 14951da177e4SLinus Torvalds struct xfrm_tunnel { 14961da177e4SLinus Torvalds int (*handler)(struct sk_buff *skb); 1497a6337463Sjamal int (*err_handler)(struct sk_buff *skb, u32 info); 1498d2acc347SHerbert Xu 1499b33eab08SEric Dumazet struct xfrm_tunnel __rcu *next; 1500d2acc347SHerbert Xu int priority; 15011da177e4SLinus Torvalds }; 15021da177e4SLinus Torvalds 15031da177e4SLinus Torvalds struct xfrm6_tunnel { 1504d2acc347SHerbert Xu int (*handler)(struct sk_buff *skb); 1505d2acc347SHerbert Xu int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, 1506d5fdd6baSBrian Haley u8 type, u8 code, int offset, __be32 info); 15076f0bcf15SEric Dumazet struct xfrm6_tunnel __rcu *next; 1508d2acc347SHerbert Xu int priority; 15091da177e4SLinus Torvalds }; 15101da177e4SLinus Torvalds 1511d511337aSJoe Perches void xfrm_init(void); 1512d511337aSJoe Perches void xfrm4_init(void); 1513d511337aSJoe Perches int xfrm_state_init(struct net *net); 1514d511337aSJoe Perches void xfrm_state_fini(struct net *net); 1515d511337aSJoe Perches void xfrm4_state_init(void); 15162f32b51bSSteffen Klassert void xfrm4_protocol_init(void); 1517c35b7e72SDaniel Lezcano #ifdef CONFIG_XFRM 1518d511337aSJoe Perches int xfrm6_init(void); 1519d511337aSJoe Perches void xfrm6_fini(void); 1520d511337aSJoe Perches int xfrm6_state_init(void); 1521d511337aSJoe Perches void xfrm6_state_fini(void); 15227e14ea15SSteffen Klassert int xfrm6_protocol_init(void); 15237e14ea15SSteffen Klassert void xfrm6_protocol_fini(void); 1524c35b7e72SDaniel Lezcano #else 1525c35b7e72SDaniel Lezcano static inline int xfrm6_init(void) 1526c35b7e72SDaniel Lezcano { 1527c35b7e72SDaniel Lezcano return 0; 1528c35b7e72SDaniel Lezcano } 1529c35b7e72SDaniel Lezcano static inline void xfrm6_fini(void) 1530c35b7e72SDaniel Lezcano { 1531c35b7e72SDaniel Lezcano ; 1532c35b7e72SDaniel Lezcano } 1533c35b7e72SDaniel Lezcano #endif 15341da177e4SLinus Torvalds 1535558f82efSMasahide NAKAMURA #ifdef CONFIG_XFRM_STATISTICS 1536d511337aSJoe Perches int xfrm_proc_init(struct net *net); 1537d511337aSJoe Perches void xfrm_proc_fini(struct net *net); 1538558f82efSMasahide NAKAMURA #endif 1539558f82efSMasahide NAKAMURA 1540d511337aSJoe Perches int xfrm_sysctl_init(struct net *net); 1541b27aeadbSAlexey Dobriyan #ifdef CONFIG_SYSCTL 1542d511337aSJoe Perches void xfrm_sysctl_fini(struct net *net); 1543b27aeadbSAlexey Dobriyan #else 1544b27aeadbSAlexey Dobriyan static inline void xfrm_sysctl_fini(struct net *net) 1545b27aeadbSAlexey Dobriyan { 1546b27aeadbSAlexey Dobriyan } 1547b27aeadbSAlexey Dobriyan #endif 1548b27aeadbSAlexey Dobriyan 1549d3623099SNicolas Dichtel void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto, 1550870a2df4SNicolas Dichtel struct xfrm_address_filter *filter); 1551d511337aSJoe Perches int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk, 15524c563f76STimo Teras int (*func)(struct xfrm_state *, int, void*), void *); 1553283bc9f3SFan Du void xfrm_state_walk_done(struct xfrm_state_walk *walk, struct net *net); 1554d511337aSJoe Perches struct xfrm_state *xfrm_state_alloc(struct net *net); 15554a135e53SMathias Krause void xfrm_state_free(struct xfrm_state *x); 1556d511337aSJoe Perches struct xfrm_state *xfrm_state_find(const xfrm_address_t *daddr, 155733765d06SDavid S. Miller const xfrm_address_t *saddr, 1558b520e9f6SDavid S. Miller const struct flowi *fl, 1559b520e9f6SDavid S. Miller struct xfrm_tmpl *tmpl, 15601da177e4SLinus Torvalds struct xfrm_policy *pol, int *err, 1561bc56b334SBenedict Wong unsigned short family, u32 if_id); 15627e652640SSteffen Klassert struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark, u32 if_id, 15635447c5e4SAlexey Dobriyan xfrm_address_t *daddr, 1564628529b6SJamal Hadi Salim xfrm_address_t *saddr, 1565628529b6SJamal Hadi Salim unsigned short family, 1566628529b6SJamal Hadi Salim u8 mode, u8 proto, u32 reqid); 1567c454997eSFan Du struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi, 1568c454997eSFan Du unsigned short family); 1569d511337aSJoe Perches int xfrm_state_check_expire(struct xfrm_state *x); 1570d511337aSJoe Perches void xfrm_state_insert(struct xfrm_state *x); 1571d511337aSJoe Perches int xfrm_state_add(struct xfrm_state *x); 1572d511337aSJoe Perches int xfrm_state_update(struct xfrm_state *x); 1573d511337aSJoe Perches struct xfrm_state *xfrm_state_lookup(struct net *net, u32 mark, 1574a70486f0SDavid S. Miller const xfrm_address_t *daddr, __be32 spi, 1575bd55775cSJamal Hadi Salim u8 proto, unsigned short family); 1576d511337aSJoe Perches struct xfrm_state *xfrm_state_lookup_byaddr(struct net *net, u32 mark, 1577a70486f0SDavid S. Miller const xfrm_address_t *daddr, 1578a70486f0SDavid S. Miller const xfrm_address_t *saddr, 1579bd55775cSJamal Hadi Salim u8 proto, 1580bd55775cSJamal Hadi Salim unsigned short family); 158141a49cc3SMasahide NAKAMURA #ifdef CONFIG_XFRM_SUB_POLICY 1582d511337aSJoe Perches int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n, 1583283bc9f3SFan Du unsigned short family, struct net *net); 1584d511337aSJoe Perches int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n, 1585d511337aSJoe Perches unsigned short family); 158641a49cc3SMasahide NAKAMURA #else 158741a49cc3SMasahide NAKAMURA static inline int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, 1588283bc9f3SFan Du int n, unsigned short family, struct net *net) 158941a49cc3SMasahide NAKAMURA { 159041a49cc3SMasahide NAKAMURA return -ENOSYS; 159141a49cc3SMasahide NAKAMURA } 159241a49cc3SMasahide NAKAMURA 159341a49cc3SMasahide NAKAMURA static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, 159441a49cc3SMasahide NAKAMURA int n, unsigned short family) 159541a49cc3SMasahide NAKAMURA { 159641a49cc3SMasahide NAKAMURA return -ENOSYS; 159741a49cc3SMasahide NAKAMURA } 159841a49cc3SMasahide NAKAMURA #endif 1599af11e316SJamal Hadi Salim 1600af11e316SJamal Hadi Salim struct xfrmk_sadinfo { 1601af11e316SJamal Hadi Salim u32 sadhcnt; /* current hash bkts */ 1602af11e316SJamal Hadi Salim u32 sadhmcnt; /* max allowed hash bkts */ 1603af11e316SJamal Hadi Salim u32 sadcnt; /* current running count */ 1604af11e316SJamal Hadi Salim }; 1605af11e316SJamal Hadi Salim 16065a6d3416SJamal Hadi Salim struct xfrmk_spdinfo { 16075a6d3416SJamal Hadi Salim u32 incnt; 16085a6d3416SJamal Hadi Salim u32 outcnt; 16095a6d3416SJamal Hadi Salim u32 fwdcnt; 16105a6d3416SJamal Hadi Salim u32 inscnt; 16115a6d3416SJamal Hadi Salim u32 outscnt; 16125a6d3416SJamal Hadi Salim u32 fwdscnt; 16135a6d3416SJamal Hadi Salim u32 spdhcnt; 16145a6d3416SJamal Hadi Salim u32 spdhmcnt; 16155a6d3416SJamal Hadi Salim }; 16165a6d3416SJamal Hadi Salim 1617d511337aSJoe Perches struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq); 1618d511337aSJoe Perches int xfrm_state_delete(struct xfrm_state *x); 16192e71029eSTetsuo Handa int xfrm_state_flush(struct net *net, u8 proto, bool task_valid); 1620d77e38e6SSteffen Klassert int xfrm_dev_state_flush(struct net *net, struct net_device *dev, bool task_valid); 1621d511337aSJoe Perches void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si); 1622d511337aSJoe Perches void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si); 1623d511337aSJoe Perches u32 xfrm_replay_seqhi(struct xfrm_state *x, __be32 net_seq); 1624d511337aSJoe Perches int xfrm_init_replay(struct xfrm_state *x); 1625d511337aSJoe Perches int xfrm_state_mtu(struct xfrm_state *x, int mtu); 1626ffdb5211SIlan Tayari int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload); 1627d511337aSJoe Perches int xfrm_init_state(struct xfrm_state *x); 1628d511337aSJoe Perches int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb); 1629d511337aSJoe Perches int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type); 1630d511337aSJoe Perches int xfrm_input_resume(struct sk_buff *skb, int nexthdr); 1631acf568eeSHerbert Xu int xfrm_trans_queue(struct sk_buff *skb, 1632acf568eeSHerbert Xu int (*finish)(struct net *, struct sock *, 1633acf568eeSHerbert Xu struct sk_buff *)); 1634d511337aSJoe Perches int xfrm_output_resume(struct sk_buff *skb, int err); 16357026b1ddSDavid Miller int xfrm_output(struct sock *sk, struct sk_buff *skb); 1636d511337aSJoe Perches int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb); 1637d511337aSJoe Perches void xfrm_local_error(struct sk_buff *skb, int mtu); 1638d511337aSJoe Perches int xfrm4_extract_header(struct sk_buff *skb); 1639d511337aSJoe Perches int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb); 1640d511337aSJoe Perches int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi, 1641716062fdSHerbert Xu int encap_type); 1642d511337aSJoe Perches int xfrm4_transport_finish(struct sk_buff *skb, int async); 1643d511337aSJoe Perches int xfrm4_rcv(struct sk_buff *skb); 16441e295370SSteffen Klassert int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq); 1645c4541b41SHerbert Xu 1646c4541b41SHerbert Xu static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi) 1647c4541b41SHerbert Xu { 164870be6c91SSteffen Klassert XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4 = NULL; 16493328715eSSteffen Klassert XFRM_SPI_SKB_CB(skb)->family = AF_INET; 16503328715eSSteffen Klassert XFRM_SPI_SKB_CB(skb)->daddroff = offsetof(struct iphdr, daddr); 16513328715eSSteffen Klassert return xfrm_input(skb, nexthdr, spi, 0); 1652c4541b41SHerbert Xu } 1653c4541b41SHerbert Xu 1654d511337aSJoe Perches int xfrm4_extract_output(struct xfrm_state *x, struct sk_buff *skb); 1655d511337aSJoe Perches int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb); 1656ede2059dSEric W. Biederman int xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb); 16577026b1ddSDavid Miller int xfrm4_output_finish(struct sock *sk, struct sk_buff *skb); 16583328715eSSteffen Klassert int xfrm4_rcv_cb(struct sk_buff *skb, u8 protocol, int err); 16593328715eSSteffen Klassert int xfrm4_protocol_register(struct xfrm4_protocol *handler, unsigned char protocol); 16603328715eSSteffen Klassert int xfrm4_protocol_deregister(struct xfrm4_protocol *handler, unsigned char protocol); 1661d511337aSJoe Perches int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family); 1662d511337aSJoe Perches int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family); 1663d511337aSJoe Perches void xfrm4_local_error(struct sk_buff *skb, u32 mtu); 1664d511337aSJoe Perches int xfrm6_extract_header(struct sk_buff *skb); 1665d511337aSJoe Perches int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb); 166663c43787SNicolas Dichtel int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi, 166763c43787SNicolas Dichtel struct ip6_tnl *t); 1668d511337aSJoe Perches int xfrm6_transport_finish(struct sk_buff *skb, int async); 166963c43787SNicolas Dichtel int xfrm6_rcv_tnl(struct sk_buff *skb, struct ip6_tnl *t); 1670d511337aSJoe Perches int xfrm6_rcv(struct sk_buff *skb); 1671d511337aSJoe Perches int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr, 1672fbd9a5b4SMasahide NAKAMURA xfrm_address_t *saddr, u8 proto); 16737b77d161SDavid S. Miller void xfrm6_local_error(struct sk_buff *skb, u32 mtu); 16747e14ea15SSteffen Klassert int xfrm6_rcv_cb(struct sk_buff *skb, u8 protocol, int err); 16757e14ea15SSteffen Klassert int xfrm6_protocol_register(struct xfrm6_protocol *handler, unsigned char protocol); 16767e14ea15SSteffen Klassert int xfrm6_protocol_deregister(struct xfrm6_protocol *handler, unsigned char protocol); 1677d511337aSJoe Perches int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family); 16787b77d161SDavid S. Miller int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family); 1679d511337aSJoe Perches __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr); 1680d511337aSJoe Perches __be32 xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr); 1681d511337aSJoe Perches int xfrm6_extract_output(struct xfrm_state *x, struct sk_buff *skb); 1682d511337aSJoe Perches int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb); 1683ede2059dSEric W. Biederman int xfrm6_output(struct net *net, struct sock *sk, struct sk_buff *skb); 16847026b1ddSDavid Miller int xfrm6_output_finish(struct sock *sk, struct sk_buff *skb); 1685d511337aSJoe Perches int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb, 1686aee5adb4SMasahide NAKAMURA u8 **prevhdr); 16871da177e4SLinus Torvalds 16881da177e4SLinus Torvalds #ifdef CONFIG_XFRM 1689d511337aSJoe Perches int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb); 1690d511337aSJoe Perches int xfrm_user_policy(struct sock *sk, int optname, 1691d511337aSJoe Perches u8 __user *optval, int optlen); 16921da177e4SLinus Torvalds #else 16931da177e4SLinus Torvalds static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen) 16941da177e4SLinus Torvalds { 16951da177e4SLinus Torvalds return -ENOPROTOOPT; 16961da177e4SLinus Torvalds } 16971da177e4SLinus Torvalds 1698067b207bSJames Chapman static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb) 16991da177e4SLinus Torvalds { 17001da177e4SLinus Torvalds /* should not happen */ 17011da177e4SLinus Torvalds kfree_skb(skb); 17021da177e4SLinus Torvalds return 0; 17031da177e4SLinus Torvalds } 17041da177e4SLinus Torvalds #endif 17051da177e4SLinus Torvalds 1706d77e38e6SSteffen Klassert struct dst_entry *__xfrm_dst_lookup(struct net *net, int tos, int oif, 1707d77e38e6SSteffen Klassert const xfrm_address_t *saddr, 1708d77e38e6SSteffen Klassert const xfrm_address_t *daddr, 1709077fbac4SLorenzo Colitti int family, u32 mark); 1710d77e38e6SSteffen Klassert 17110331b1f3SAlexey Dobriyan struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp); 17124c563f76STimo Teras 1713d511337aSJoe Perches void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type); 1714d511337aSJoe Perches int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk, 1715d511337aSJoe Perches int (*func)(struct xfrm_policy *, int, int, void*), 1716d511337aSJoe Perches void *); 1717283bc9f3SFan Du void xfrm_policy_walk_done(struct xfrm_policy_walk *walk, struct net *net); 17181da177e4SLinus Torvalds int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl); 17197e652640SSteffen Klassert struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark, u32 if_id, 17208ca2e93bSJamal Hadi Salim u8 type, int dir, 17214e81bb83SMasahide NAKAMURA struct xfrm_selector *sel, 1722ef41aaa0SEric Paris struct xfrm_sec_ctx *ctx, int delete, 1723ef41aaa0SEric Paris int *err); 17247e652640SSteffen Klassert struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u32 if_id, u8, 17257e652640SSteffen Klassert int dir, u32 id, int delete, int *err); 17262e71029eSTetsuo Handa int xfrm_policy_flush(struct net *net, u8 type, bool task_valid); 1727880a6fabSChristophe Gouault void xfrm_policy_hash_rebuild(struct net *net); 17281da177e4SLinus Torvalds u32 xfrm_get_acqseq(void); 1729776e9dd9SFan Du int verify_spi_info(u8 proto, u32 min, u32 max); 1730d511337aSJoe Perches int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi); 1731e473fcb4SMathias Krause struct xfrm_state *xfrm_find_acq(struct net *net, const struct xfrm_mark *mark, 17327e652640SSteffen Klassert u8 mode, u32 reqid, u32 if_id, u8 proto, 1733a70486f0SDavid S. Miller const xfrm_address_t *daddr, 1734a70486f0SDavid S. Miller const xfrm_address_t *saddr, int create, 1735bd55775cSJamal Hadi Salim unsigned short family); 1736d511337aSJoe Perches int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol); 17371da177e4SLinus Torvalds 173880c9abaaSShinta Sugimoto #ifdef CONFIG_XFRM_MIGRATE 1739d511337aSJoe Perches int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, 1740183cad12SDavid S. Miller const struct xfrm_migrate *m, int num_bundles, 17418bafd730SAntony Antony const struct xfrm_kmaddress *k, 17428bafd730SAntony Antony const struct xfrm_encap_tmpl *encap); 1743283bc9f3SFan Du struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net); 1744d511337aSJoe Perches struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, 17454ab47d47SAntony Antony struct xfrm_migrate *m, 17464ab47d47SAntony Antony struct xfrm_encap_tmpl *encap); 1747d511337aSJoe Perches int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, 174813c1d189SArnaud Ebalard struct xfrm_migrate *m, int num_bundles, 17494ab47d47SAntony Antony struct xfrm_kmaddress *k, struct net *net, 17504ab47d47SAntony Antony struct xfrm_encap_tmpl *encap); 175180c9abaaSShinta Sugimoto #endif 175280c9abaaSShinta Sugimoto 1753d511337aSJoe Perches int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport); 1754d511337aSJoe Perches void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 portid); 1755d511337aSJoe Perches int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, 1756d511337aSJoe Perches xfrm_address_t *addr); 17571da177e4SLinus Torvalds 1758d511337aSJoe Perches void xfrm_input_init(void); 1759d511337aSJoe Perches int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq); 17601da177e4SLinus Torvalds 1761d511337aSJoe Perches void xfrm_probe_algs(void); 1762d511337aSJoe Perches int xfrm_count_pfkey_auth_supported(void); 1763d511337aSJoe Perches int xfrm_count_pfkey_enc_supported(void); 1764d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx); 1765d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx); 1766d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id); 1767d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id); 1768d511337aSJoe Perches struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id); 1769d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byname(const char *name, int probe); 1770d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe); 1771d511337aSJoe Perches struct xfrm_algo_desc *xfrm_calg_get_byname(const char *name, int probe); 1772d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aead_get_byname(const char *name, int icv_len, 17731a6509d9SHerbert Xu int probe); 17741da177e4SLinus Torvalds 1775ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 static inline bool xfrm6_addr_equal(const xfrm_address_t *a, 1776ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 const xfrm_address_t *b) 1777ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 { 1778ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 return ipv6_addr_equal((const struct in6_addr *)a, 1779ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 (const struct in6_addr *)b); 1780ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 } 1781ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 178270e94e66SYOSHIFUJI Hideaki / 吉藤英明 static inline bool xfrm_addr_equal(const xfrm_address_t *a, 178370e94e66SYOSHIFUJI Hideaki / 吉藤英明 const xfrm_address_t *b, 178470e94e66SYOSHIFUJI Hideaki / 吉藤英明 sa_family_t family) 178570e94e66SYOSHIFUJI Hideaki / 吉藤英明 { 178670e94e66SYOSHIFUJI Hideaki / 吉藤英明 switch (family) { 178770e94e66SYOSHIFUJI Hideaki / 吉藤英明 default: 178870e94e66SYOSHIFUJI Hideaki / 吉藤英明 case AF_INET: 178970e94e66SYOSHIFUJI Hideaki / 吉藤英明 return ((__force u32)a->a4 ^ (__force u32)b->a4) == 0; 179070e94e66SYOSHIFUJI Hideaki / 吉藤英明 case AF_INET6: 179170e94e66SYOSHIFUJI Hideaki / 吉藤英明 return xfrm6_addr_equal(a, b); 179270e94e66SYOSHIFUJI Hideaki / 吉藤英明 } 179370e94e66SYOSHIFUJI Hideaki / 吉藤英明 } 179470e94e66SYOSHIFUJI Hideaki / 吉藤英明 179577d8d7a6SHerbert Xu static inline int xfrm_policy_id2dir(u32 index) 179677d8d7a6SHerbert Xu { 179777d8d7a6SHerbert Xu return index & 7; 179877d8d7a6SHerbert Xu } 179977d8d7a6SHerbert Xu 1800a6483b79SAlexey Dobriyan #ifdef CONFIG_XFRM 1801a6483b79SAlexey Dobriyan static inline int xfrm_aevent_is_on(struct net *net) 1802f8cd5488SJamal Hadi Salim { 1803be33690dSPatrick McHardy struct sock *nlsk; 1804be33690dSPatrick McHardy int ret = 0; 1805be33690dSPatrick McHardy 1806be33690dSPatrick McHardy rcu_read_lock(); 1807a6483b79SAlexey Dobriyan nlsk = rcu_dereference(net->xfrm.nlsk); 1808be33690dSPatrick McHardy if (nlsk) 1809be33690dSPatrick McHardy ret = netlink_has_listeners(nlsk, XFRMNLGRP_AEVENTS); 1810be33690dSPatrick McHardy rcu_read_unlock(); 1811be33690dSPatrick McHardy return ret; 1812f8cd5488SJamal Hadi Salim } 18130f24558eSHoria Geanta 18140f24558eSHoria Geanta static inline int xfrm_acquire_is_on(struct net *net) 18150f24558eSHoria Geanta { 18160f24558eSHoria Geanta struct sock *nlsk; 18170f24558eSHoria Geanta int ret = 0; 18180f24558eSHoria Geanta 18190f24558eSHoria Geanta rcu_read_lock(); 18200f24558eSHoria Geanta nlsk = rcu_dereference(net->xfrm.nlsk); 18210f24558eSHoria Geanta if (nlsk) 18220f24558eSHoria Geanta ret = netlink_has_listeners(nlsk, XFRMNLGRP_ACQUIRE); 18230f24558eSHoria Geanta rcu_read_unlock(); 18240f24558eSHoria Geanta 18250f24558eSHoria Geanta return ret; 18260f24558eSHoria Geanta } 1827a6483b79SAlexey Dobriyan #endif 1828f8cd5488SJamal Hadi Salim 1829373b8eebSAlexey Dobriyan static inline unsigned int aead_len(struct xfrm_algo_aead *alg) 1830ee5c2317SSteffen Klassert { 1831ee5c2317SSteffen Klassert return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 1832ee5c2317SSteffen Klassert } 1833ee5c2317SSteffen Klassert 183406cd22f8SAlexey Dobriyan static inline unsigned int xfrm_alg_len(const struct xfrm_algo *alg) 18350f99be0dSEric Dumazet { 18360f99be0dSEric Dumazet return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 18370f99be0dSEric Dumazet } 18380f99be0dSEric Dumazet 18391bd963a7SAlexey Dobriyan static inline unsigned int xfrm_alg_auth_len(const struct xfrm_algo_auth *alg) 18404447bb33SMartin Willi { 18414447bb33SMartin Willi return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 18424447bb33SMartin Willi } 18434447bb33SMartin Willi 18445e708e47SAlexey Dobriyan static inline unsigned int xfrm_replay_state_esn_len(struct xfrm_replay_state_esn *replay_esn) 18459736acf3SSteffen Klassert { 18469736acf3SSteffen Klassert return sizeof(*replay_esn) + replay_esn->bmp_len * sizeof(__u32); 18479736acf3SSteffen Klassert } 18489736acf3SSteffen Klassert 184980c9abaaSShinta Sugimoto #ifdef CONFIG_XFRM_MIGRATE 1850af2f464eSSteffen Klassert static inline int xfrm_replay_clone(struct xfrm_state *x, 1851af2f464eSSteffen Klassert struct xfrm_state *orig) 1852af2f464eSSteffen Klassert { 1853af2f464eSSteffen Klassert x->replay_esn = kzalloc(xfrm_replay_state_esn_len(orig->replay_esn), 1854af2f464eSSteffen Klassert GFP_KERNEL); 1855af2f464eSSteffen Klassert if (!x->replay_esn) 1856af2f464eSSteffen Klassert return -ENOMEM; 1857af2f464eSSteffen Klassert 1858af2f464eSSteffen Klassert x->replay_esn->bmp_len = orig->replay_esn->bmp_len; 1859af2f464eSSteffen Klassert x->replay_esn->replay_window = orig->replay_esn->replay_window; 1860af2f464eSSteffen Klassert 1861af2f464eSSteffen Klassert x->preplay_esn = kmemdup(x->replay_esn, 1862af2f464eSSteffen Klassert xfrm_replay_state_esn_len(x->replay_esn), 1863af2f464eSSteffen Klassert GFP_KERNEL); 1864af2f464eSSteffen Klassert if (!x->preplay_esn) { 1865af2f464eSSteffen Klassert kfree(x->replay_esn); 1866af2f464eSSteffen Klassert return -ENOMEM; 1867af2f464eSSteffen Klassert } 1868af2f464eSSteffen Klassert 1869af2f464eSSteffen Klassert return 0; 1870af2f464eSSteffen Klassert } 1871af2f464eSSteffen Klassert 1872ee5c2317SSteffen Klassert static inline struct xfrm_algo_aead *xfrm_algo_aead_clone(struct xfrm_algo_aead *orig) 1873ee5c2317SSteffen Klassert { 1874ee5c2317SSteffen Klassert return kmemdup(orig, aead_len(orig), GFP_KERNEL); 1875ee5c2317SSteffen Klassert } 1876ee5c2317SSteffen Klassert 1877ee5c2317SSteffen Klassert 187880c9abaaSShinta Sugimoto static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig) 187980c9abaaSShinta Sugimoto { 18800f99be0dSEric Dumazet return kmemdup(orig, xfrm_alg_len(orig), GFP_KERNEL); 188180c9abaaSShinta Sugimoto } 188280c9abaaSShinta Sugimoto 18834447bb33SMartin Willi static inline struct xfrm_algo_auth *xfrm_algo_auth_clone(struct xfrm_algo_auth *orig) 18844447bb33SMartin Willi { 18854447bb33SMartin Willi return kmemdup(orig, xfrm_alg_auth_len(orig), GFP_KERNEL); 18864447bb33SMartin Willi } 18874447bb33SMartin Willi 188880c9abaaSShinta Sugimoto static inline void xfrm_states_put(struct xfrm_state **states, int n) 188980c9abaaSShinta Sugimoto { 189080c9abaaSShinta Sugimoto int i; 189180c9abaaSShinta Sugimoto for (i = 0; i < n; i++) 189280c9abaaSShinta Sugimoto xfrm_state_put(*(states + i)); 189380c9abaaSShinta Sugimoto } 189480c9abaaSShinta Sugimoto 189580c9abaaSShinta Sugimoto static inline void xfrm_states_delete(struct xfrm_state **states, int n) 189680c9abaaSShinta Sugimoto { 189780c9abaaSShinta Sugimoto int i; 189880c9abaaSShinta Sugimoto for (i = 0; i < n; i++) 189980c9abaaSShinta Sugimoto xfrm_state_delete(*(states + i)); 190080c9abaaSShinta Sugimoto } 190180c9abaaSShinta Sugimoto #endif 1902f8cd5488SJamal Hadi Salim 1903def8b4faSAlexey Dobriyan #ifdef CONFIG_XFRM 190400501121SHerbert Xu static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb) 190500501121SHerbert Xu { 190600501121SHerbert Xu return skb->sp->xvec[skb->sp->len - 1]; 190700501121SHerbert Xu } 1908f53c7239SSteffen Klassert #endif 1909f53c7239SSteffen Klassert 191054ef207aSSteffen Klassert static inline struct xfrm_offload *xfrm_offload(struct sk_buff *skb) 191154ef207aSSteffen Klassert { 1912f53c7239SSteffen Klassert #ifdef CONFIG_XFRM 191354ef207aSSteffen Klassert struct sec_path *sp = skb->sp; 191454ef207aSSteffen Klassert 191554ef207aSSteffen Klassert if (!sp || !sp->olen || sp->len != sp->olen) 191654ef207aSSteffen Klassert return NULL; 191754ef207aSSteffen Klassert 191854ef207aSSteffen Klassert return &sp->ovec[sp->olen - 1]; 1919f53c7239SSteffen Klassert #else 1920f53c7239SSteffen Klassert return NULL; 1921def8b4faSAlexey Dobriyan #endif 1922f53c7239SSteffen Klassert } 192300501121SHerbert Xu 1924e9a441b6SKirill Tkhai void __init xfrm_dev_init(void); 1925b81f884aSHangbin Liu 1926b81f884aSHangbin Liu #ifdef CONFIG_XFRM_OFFLOAD 1927f53c7239SSteffen Klassert void xfrm_dev_resume(struct sk_buff *skb); 1928f53c7239SSteffen Klassert void xfrm_dev_backlog(struct softnet_data *sd); 1929f53c7239SSteffen Klassert struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features, bool *again); 1930d77e38e6SSteffen Klassert int xfrm_dev_state_add(struct net *net, struct xfrm_state *x, 1931d77e38e6SSteffen Klassert struct xfrm_user_offload *xuo); 1932d77e38e6SSteffen Klassert bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x); 1933d77e38e6SSteffen Klassert 193450bd870aSYossef Efraim static inline void xfrm_dev_state_advance_esn(struct xfrm_state *x) 193550bd870aSYossef Efraim { 193650bd870aSYossef Efraim struct xfrm_state_offload *xso = &x->xso; 193750bd870aSYossef Efraim 193850bd870aSYossef Efraim if (xso->dev && xso->dev->xfrmdev_ops->xdo_dev_state_advance_esn) 193950bd870aSYossef Efraim xso->dev->xfrmdev_ops->xdo_dev_state_advance_esn(x); 194050bd870aSYossef Efraim } 194150bd870aSYossef Efraim 1942f70f250aSSteffen Klassert static inline bool xfrm_dst_offload_ok(struct dst_entry *dst) 1943f70f250aSSteffen Klassert { 1944f70f250aSSteffen Klassert struct xfrm_state *x = dst->xfrm; 1945b6ca8bd5SDavid Miller struct xfrm_dst *xdst; 1946f70f250aSSteffen Klassert 1947f70f250aSSteffen Klassert if (!x || !x->type_offload) 1948f70f250aSSteffen Klassert return false; 1949f70f250aSSteffen Klassert 1950b6ca8bd5SDavid Miller xdst = (struct xfrm_dst *) dst; 19512271d519SSteffen Klassert if (!x->xso.offload_handle && !xdst->child->xfrm) 19522271d519SSteffen Klassert return true; 19530f6c480fSDavid Miller if (x->xso.offload_handle && (x->xso.dev == xfrm_dst_path(dst)->dev) && 1954b6ca8bd5SDavid Miller !xdst->child->xfrm) 1955f70f250aSSteffen Klassert return true; 1956f70f250aSSteffen Klassert 1957f70f250aSSteffen Klassert return false; 1958f70f250aSSteffen Klassert } 1959f70f250aSSteffen Klassert 1960d77e38e6SSteffen Klassert static inline void xfrm_dev_state_delete(struct xfrm_state *x) 1961d77e38e6SSteffen Klassert { 1962d77e38e6SSteffen Klassert struct xfrm_state_offload *xso = &x->xso; 1963d77e38e6SSteffen Klassert 1964d77e38e6SSteffen Klassert if (xso->dev) 1965d77e38e6SSteffen Klassert xso->dev->xfrmdev_ops->xdo_dev_state_delete(x); 1966d77e38e6SSteffen Klassert } 1967d77e38e6SSteffen Klassert 1968d77e38e6SSteffen Klassert static inline void xfrm_dev_state_free(struct xfrm_state *x) 1969d77e38e6SSteffen Klassert { 1970d77e38e6SSteffen Klassert struct xfrm_state_offload *xso = &x->xso; 1971d77e38e6SSteffen Klassert struct net_device *dev = xso->dev; 1972d77e38e6SSteffen Klassert 1973d77e38e6SSteffen Klassert if (dev && dev->xfrmdev_ops) { 19747f05b467SShannon Nelson if (dev->xfrmdev_ops->xdo_dev_state_free) 1975d77e38e6SSteffen Klassert dev->xfrmdev_ops->xdo_dev_state_free(x); 1976d77e38e6SSteffen Klassert xso->dev = NULL; 1977d77e38e6SSteffen Klassert dev_put(dev); 1978d77e38e6SSteffen Klassert } 1979d77e38e6SSteffen Klassert } 1980d77e38e6SSteffen Klassert #else 1981f53c7239SSteffen Klassert static inline void xfrm_dev_resume(struct sk_buff *skb) 1982f53c7239SSteffen Klassert { 1983f53c7239SSteffen Klassert } 1984f53c7239SSteffen Klassert 1985f53c7239SSteffen Klassert static inline void xfrm_dev_backlog(struct softnet_data *sd) 1986f53c7239SSteffen Klassert { 1987f53c7239SSteffen Klassert } 1988f53c7239SSteffen Klassert 1989f53c7239SSteffen Klassert static inline struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features, bool *again) 1990f6e27114SSteffen Klassert { 19913dca3f38SSteffen Klassert return skb; 1992f6e27114SSteffen Klassert } 1993f6e27114SSteffen Klassert 1994d77e38e6SSteffen Klassert static inline int xfrm_dev_state_add(struct net *net, struct xfrm_state *x, struct xfrm_user_offload *xuo) 1995d77e38e6SSteffen Klassert { 1996d77e38e6SSteffen Klassert return 0; 1997d77e38e6SSteffen Klassert } 1998d77e38e6SSteffen Klassert 1999d77e38e6SSteffen Klassert static inline void xfrm_dev_state_delete(struct xfrm_state *x) 2000d77e38e6SSteffen Klassert { 2001d77e38e6SSteffen Klassert } 2002d77e38e6SSteffen Klassert 2003d77e38e6SSteffen Klassert static inline void xfrm_dev_state_free(struct xfrm_state *x) 2004d77e38e6SSteffen Klassert { 2005d77e38e6SSteffen Klassert } 2006d77e38e6SSteffen Klassert 2007d77e38e6SSteffen Klassert static inline bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x) 2008d77e38e6SSteffen Klassert { 2009d77e38e6SSteffen Klassert return false; 2010d77e38e6SSteffen Klassert } 2011f70f250aSSteffen Klassert 201250bd870aSYossef Efraim static inline void xfrm_dev_state_advance_esn(struct xfrm_state *x) 201350bd870aSYossef Efraim { 201450bd870aSYossef Efraim } 201550bd870aSYossef Efraim 2016f70f250aSSteffen Klassert static inline bool xfrm_dst_offload_ok(struct dst_entry *dst) 2017f70f250aSSteffen Klassert { 2018f70f250aSSteffen Klassert return false; 2019f70f250aSSteffen Klassert } 2020d77e38e6SSteffen Klassert #endif 2021d77e38e6SSteffen Klassert 2022bf825f81SJamal Hadi Salim static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m) 2023bf825f81SJamal Hadi Salim { 2024bf825f81SJamal Hadi Salim if (attrs[XFRMA_MARK]) 20254efd7e83SAndreas Steffen memcpy(m, nla_data(attrs[XFRMA_MARK]), sizeof(struct xfrm_mark)); 2026bf825f81SJamal Hadi Salim else 2027bf825f81SJamal Hadi Salim m->v = m->m = 0; 2028bf825f81SJamal Hadi Salim 2029bf825f81SJamal Hadi Salim return m->v & m->m; 2030bf825f81SJamal Hadi Salim } 2031bf825f81SJamal Hadi Salim 2032e3dfa389SDavid S. Miller static inline int xfrm_mark_put(struct sk_buff *skb, const struct xfrm_mark *m) 2033bf825f81SJamal Hadi Salim { 20341d1e34ddSDavid S. Miller int ret = 0; 2035bf825f81SJamal Hadi Salim 20361d1e34ddSDavid S. Miller if (m->m | m->v) 20371d1e34ddSDavid S. Miller ret = nla_put(skb, XFRMA_MARK, sizeof(struct xfrm_mark), m); 20381d1e34ddSDavid S. Miller return ret; 2039bf825f81SJamal Hadi Salim } 2040bf825f81SJamal Hadi Salim 20419b42c1f1SSteffen Klassert static inline __u32 xfrm_smark_get(__u32 mark, struct xfrm_state *x) 20429b42c1f1SSteffen Klassert { 20439b42c1f1SSteffen Klassert struct xfrm_mark *m = &x->props.smark; 20449b42c1f1SSteffen Klassert 20459b42c1f1SSteffen Klassert return (m->v & m->m) | (mark & ~m->m); 20469b42c1f1SSteffen Klassert } 20479b42c1f1SSteffen Klassert 20487e652640SSteffen Klassert static inline int xfrm_if_id_put(struct sk_buff *skb, __u32 if_id) 20497e652640SSteffen Klassert { 20507e652640SSteffen Klassert int ret = 0; 20517e652640SSteffen Klassert 20527e652640SSteffen Klassert if (if_id) 20537e652640SSteffen Klassert ret = nla_put_u32(skb, XFRMA_IF_ID, if_id); 20547e652640SSteffen Klassert return ret; 20557e652640SSteffen Klassert } 20567e652640SSteffen Klassert 205770be6c91SSteffen Klassert static inline int xfrm_tunnel_check(struct sk_buff *skb, struct xfrm_state *x, 205870be6c91SSteffen Klassert unsigned int family) 205970be6c91SSteffen Klassert { 206070be6c91SSteffen Klassert bool tunnel = false; 206170be6c91SSteffen Klassert 206270be6c91SSteffen Klassert switch(family) { 206370be6c91SSteffen Klassert case AF_INET: 206470be6c91SSteffen Klassert if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4) 206570be6c91SSteffen Klassert tunnel = true; 206670be6c91SSteffen Klassert break; 206770be6c91SSteffen Klassert case AF_INET6: 206870be6c91SSteffen Klassert if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6) 206970be6c91SSteffen Klassert tunnel = true; 207070be6c91SSteffen Klassert break; 207170be6c91SSteffen Klassert } 207270be6c91SSteffen Klassert if (tunnel && !(x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL)) 207370be6c91SSteffen Klassert return -EINVAL; 207470be6c91SSteffen Klassert 207570be6c91SSteffen Klassert return 0; 207670be6c91SSteffen Klassert } 20771da177e4SLinus Torvalds #endif /* _NET_XFRM_H */ 2078