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; 222*671422b2SThomas Gleixner struct 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; 5806be3b0dbSFlorian Westphal u32 pos; 5811da177e4SLinus Torvalds struct timer_list timer; 5821da177e4SLinus Torvalds 58380c802f3STimo Teräs atomic_t genid; 5841da177e4SLinus Torvalds u32 priority; 5851da177e4SLinus Torvalds u32 index; 5867e652640SSteffen Klassert u32 if_id; 587bf825f81SJamal Hadi Salim struct xfrm_mark mark; 5881da177e4SLinus Torvalds struct xfrm_selector selector; 5891da177e4SLinus Torvalds struct xfrm_lifetime_cfg lft; 5901da177e4SLinus Torvalds struct xfrm_lifetime_cur curlft; 59112a169e7SHerbert Xu struct xfrm_policy_walk_entry walk; 592a0073fe1SSteffen Klassert struct xfrm_policy_queue polq; 5939cf545ebSFlorian Westphal bool bydst_reinsert; 59446ca5f5dSArnaldo Carvalho de Melo u8 type; 59546ca5f5dSArnaldo Carvalho de Melo u8 action; 59646ca5f5dSArnaldo Carvalho de Melo u8 flags; 59746ca5f5dSArnaldo Carvalho de Melo u8 xfrm_nr; 59812a169e7SHerbert Xu u16 family; 599df71837dSTrent Jaeger struct xfrm_sec_ctx *security; 6001da177e4SLinus Torvalds struct xfrm_tmpl xfrm_vec[XFRM_MAX_DEPTH]; 60124969facSFlorian Westphal struct hlist_node bydst_inexact_list; 60256f04730SEric Dumazet struct rcu_head rcu; 6031da177e4SLinus Torvalds }; 6041da177e4SLinus Torvalds 60563eb23f5SDavid S. Miller static inline struct net *xp_net(const struct xfrm_policy *xp) 6060331b1f3SAlexey Dobriyan { 6070331b1f3SAlexey Dobriyan return read_pnet(&xp->xp_net); 6080331b1f3SAlexey Dobriyan } 6090331b1f3SAlexey Dobriyan 61013c1d189SArnaud Ebalard struct xfrm_kmaddress { 61113c1d189SArnaud Ebalard xfrm_address_t local; 61213c1d189SArnaud Ebalard xfrm_address_t remote; 61313c1d189SArnaud Ebalard u32 reserved; 61413c1d189SArnaud Ebalard u16 family; 61513c1d189SArnaud Ebalard }; 61613c1d189SArnaud Ebalard 61780c9abaaSShinta Sugimoto struct xfrm_migrate { 61880c9abaaSShinta Sugimoto xfrm_address_t old_daddr; 61980c9abaaSShinta Sugimoto xfrm_address_t old_saddr; 62080c9abaaSShinta Sugimoto xfrm_address_t new_daddr; 62180c9abaaSShinta Sugimoto xfrm_address_t new_saddr; 62280c9abaaSShinta Sugimoto u8 proto; 62380c9abaaSShinta Sugimoto u8 mode; 62480c9abaaSShinta Sugimoto u16 reserved; 62580c9abaaSShinta Sugimoto u32 reqid; 62680c9abaaSShinta Sugimoto u16 old_family; 62780c9abaaSShinta Sugimoto u16 new_family; 62880c9abaaSShinta Sugimoto }; 62980c9abaaSShinta Sugimoto 6301da177e4SLinus Torvalds #define XFRM_KM_TIMEOUT 30 631f8cd5488SJamal Hadi Salim /* what happened */ 632f8cd5488SJamal Hadi Salim #define XFRM_REPLAY_UPDATE XFRM_AE_CR 633f8cd5488SJamal Hadi Salim #define XFRM_REPLAY_TIMEOUT XFRM_AE_CE 634f8cd5488SJamal Hadi Salim 635f8cd5488SJamal Hadi Salim /* default aevent timeout in units of 100ms */ 636f8cd5488SJamal Hadi Salim #define XFRM_AE_ETIME 10 637f8cd5488SJamal Hadi Salim /* Async Event timer multiplier */ 638f8cd5488SJamal Hadi Salim #define XFRM_AE_ETH_M 10 639f8cd5488SJamal Hadi Salim /* default seq threshold size */ 640f8cd5488SJamal Hadi Salim #define XFRM_AE_SEQT_SIZE 2 6411da177e4SLinus Torvalds 642fd2c3ef7SEric Dumazet struct xfrm_mgr { 6431da177e4SLinus Torvalds struct list_head list; 644214e005bSDavid S. Miller int (*notify)(struct xfrm_state *x, const struct km_event *c); 64565e0736bSFan Du int (*acquire)(struct xfrm_state *x, struct xfrm_tmpl *, struct xfrm_policy *xp); 646cb969f07SVenkat Yekkirala struct xfrm_policy *(*compile_policy)(struct sock *sk, int opt, u8 *data, int len, int *dir); 6475d36b180SAl Viro int (*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport); 648214e005bSDavid S. Miller int (*notify_policy)(struct xfrm_policy *x, int dir, const struct km_event *c); 649db983c11SAlexey Dobriyan int (*report)(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr); 650183cad12SDavid S. Miller int (*migrate)(const struct xfrm_selector *sel, 651183cad12SDavid S. Miller u8 dir, u8 type, 652183cad12SDavid S. Miller const struct xfrm_migrate *m, 653183cad12SDavid S. Miller int num_bundles, 6548bafd730SAntony Antony const struct xfrm_kmaddress *k, 6558bafd730SAntony Antony const struct xfrm_encap_tmpl *encap); 6560f24558eSHoria Geanta bool (*is_alive)(const struct km_event *c); 6571da177e4SLinus Torvalds }; 6581da177e4SLinus Torvalds 659d511337aSJoe Perches int xfrm_register_km(struct xfrm_mgr *km); 660d511337aSJoe Perches int xfrm_unregister_km(struct xfrm_mgr *km); 6611da177e4SLinus Torvalds 66270be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb { 66370be6c91SSteffen Klassert union { 66470be6c91SSteffen Klassert struct inet_skb_parm h4; 66570be6c91SSteffen Klassert struct inet6_skb_parm h6; 66670be6c91SSteffen Klassert } header; 66770be6c91SSteffen Klassert 66870be6c91SSteffen Klassert union { 66970be6c91SSteffen Klassert struct ip_tunnel *ip4; 67070be6c91SSteffen Klassert struct ip6_tnl *ip6; 67170be6c91SSteffen Klassert } tunnel; 67270be6c91SSteffen Klassert }; 67370be6c91SSteffen Klassert 67470be6c91SSteffen Klassert #define XFRM_TUNNEL_SKB_CB(__skb) ((struct xfrm_tunnel_skb_cb *)&((__skb)->cb[0])) 67570be6c91SSteffen Klassert 676436a0a40SHerbert Xu /* 677436a0a40SHerbert Xu * This structure is used for the duration where packets are being 678436a0a40SHerbert Xu * transformed by IPsec. As soon as the packet leaves IPsec the 679436a0a40SHerbert Xu * area beyond the generic IP part may be overwritten. 680436a0a40SHerbert Xu */ 681436a0a40SHerbert Xu struct xfrm_skb_cb { 68270be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 683436a0a40SHerbert Xu 684436a0a40SHerbert Xu /* Sequence number for replay protection. */ 685b318e0e4SHerbert Xu union { 6861ce3644aSSteffen Klassert struct { 6871ce3644aSSteffen Klassert __u32 low; 6881ce3644aSSteffen Klassert __u32 hi; 6891ce3644aSSteffen Klassert } output; 6901ce3644aSSteffen Klassert struct { 6911ce3644aSSteffen Klassert __be32 low; 6921ce3644aSSteffen Klassert __be32 hi; 6931ce3644aSSteffen Klassert } input; 694b318e0e4SHerbert Xu } seq; 695436a0a40SHerbert Xu }; 696436a0a40SHerbert Xu 697436a0a40SHerbert Xu #define XFRM_SKB_CB(__skb) ((struct xfrm_skb_cb *)&((__skb)->cb[0])) 698436a0a40SHerbert Xu 69936cf9acfSHerbert Xu /* 70036cf9acfSHerbert Xu * This structure is used by the afinfo prepare_input/prepare_output functions 70136cf9acfSHerbert Xu * to transmit header information to the mode input/output functions. 70236cf9acfSHerbert Xu */ 70336cf9acfSHerbert Xu struct xfrm_mode_skb_cb { 70470be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 70536cf9acfSHerbert Xu 70636cf9acfSHerbert Xu /* Copied from header for IPv4, always set to zero and DF for IPv6. */ 70736cf9acfSHerbert Xu __be16 id; 70836cf9acfSHerbert Xu __be16 frag_off; 70936cf9acfSHerbert Xu 710732c8bd5SHerbert Xu /* IP header length (excluding options or extension headers). */ 711732c8bd5SHerbert Xu u8 ihl; 712732c8bd5SHerbert Xu 71336cf9acfSHerbert Xu /* TOS for IPv4, class for IPv6. */ 71436cf9acfSHerbert Xu u8 tos; 71536cf9acfSHerbert Xu 71636cf9acfSHerbert Xu /* TTL for IPv4, hop limitfor IPv6. */ 71736cf9acfSHerbert Xu u8 ttl; 71836cf9acfSHerbert Xu 71936cf9acfSHerbert Xu /* Protocol for IPv4, NH for IPv6. */ 72036cf9acfSHerbert Xu u8 protocol; 72136cf9acfSHerbert Xu 722732c8bd5SHerbert Xu /* Option length for IPv4, zero for IPv6. */ 723732c8bd5SHerbert Xu u8 optlen; 724732c8bd5SHerbert Xu 72536cf9acfSHerbert Xu /* Used by IPv6 only, zero for IPv4. */ 72636cf9acfSHerbert Xu u8 flow_lbl[3]; 72736cf9acfSHerbert Xu }; 72836cf9acfSHerbert Xu 72936cf9acfSHerbert Xu #define XFRM_MODE_SKB_CB(__skb) ((struct xfrm_mode_skb_cb *)&((__skb)->cb[0])) 73036cf9acfSHerbert Xu 731716062fdSHerbert Xu /* 732716062fdSHerbert Xu * This structure is used by the input processing to locate the SPI and 733716062fdSHerbert Xu * related information. 734716062fdSHerbert Xu */ 735716062fdSHerbert Xu struct xfrm_spi_skb_cb { 73670be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 737716062fdSHerbert Xu 738716062fdSHerbert Xu unsigned int daddroff; 7392fcb45b6SHerbert Xu unsigned int family; 7407785bba2SSteffen Klassert __be32 seq; 741716062fdSHerbert Xu }; 742716062fdSHerbert Xu 743716062fdSHerbert Xu #define XFRM_SPI_SKB_CB(__skb) ((struct xfrm_spi_skb_cb *)&((__skb)->cb[0])) 744716062fdSHerbert Xu 745c9204d9cSJoy Latten #ifdef CONFIG_AUDITSYSCALL 746afeb14b4SPaul Moore static inline struct audit_buffer *xfrm_audit_start(const char *op) 747ab5f5e8bSJoy Latten { 748ab5f5e8bSJoy Latten struct audit_buffer *audit_buf = NULL; 749ab5f5e8bSJoy Latten 750f7859590SRichard Guy Briggs if (audit_enabled == AUDIT_OFF) 751afeb14b4SPaul Moore return NULL; 752cdfb6b34SRichard Guy Briggs audit_buf = audit_log_start(audit_context(), GFP_ATOMIC, 753ab5f5e8bSJoy Latten AUDIT_MAC_IPSEC_EVENT); 754ab5f5e8bSJoy Latten if (audit_buf == NULL) 755ab5f5e8bSJoy Latten return NULL; 756afeb14b4SPaul Moore audit_log_format(audit_buf, "op=%s", op); 757afeb14b4SPaul Moore return audit_buf; 758afeb14b4SPaul Moore } 759afeb14b4SPaul Moore 7602e71029eSTetsuo Handa static inline void xfrm_audit_helper_usrinfo(bool task_valid, 761afeb14b4SPaul Moore struct audit_buffer *audit_buf) 762afeb14b4SPaul Moore { 7632e71029eSTetsuo Handa const unsigned int auid = from_kuid(&init_user_ns, task_valid ? 7642e71029eSTetsuo Handa audit_get_loginuid(current) : 7652e71029eSTetsuo Handa INVALID_UID); 7662e71029eSTetsuo Handa const unsigned int ses = task_valid ? audit_get_sessionid(current) : 767f0b75216SRichard Guy Briggs AUDIT_SID_UNSET; 7682e71029eSTetsuo Handa 7692e71029eSTetsuo Handa audit_log_format(audit_buf, " auid=%u ses=%u", auid, ses); 770ab5f5e8bSJoy Latten audit_log_task_context(audit_buf); 771ab5f5e8bSJoy Latten } 772ab5f5e8bSJoy Latten 7732e71029eSTetsuo Handa void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, bool task_valid); 7742e71029eSTetsuo Handa void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result, 7752e71029eSTetsuo Handa bool task_valid); 7762e71029eSTetsuo Handa void xfrm_audit_state_add(struct xfrm_state *x, int result, bool task_valid); 7772e71029eSTetsuo Handa void xfrm_audit_state_delete(struct xfrm_state *x, int result, bool task_valid); 778d511337aSJoe Perches void xfrm_audit_state_replay_overflow(struct xfrm_state *x, 779afeb14b4SPaul Moore struct sk_buff *skb); 780d511337aSJoe Perches void xfrm_audit_state_replay(struct xfrm_state *x, struct sk_buff *skb, 781d511337aSJoe Perches __be32 net_seq); 782d511337aSJoe Perches void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family); 783d511337aSJoe Perches void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, __be32 net_spi, 784d511337aSJoe Perches __be32 net_seq); 785d511337aSJoe Perches void xfrm_audit_state_icvfail(struct xfrm_state *x, struct sk_buff *skb, 786d511337aSJoe Perches u8 proto); 787c9204d9cSJoy Latten #else 78841fef0eeSMarcin Slusarz 78941fef0eeSMarcin Slusarz static inline void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, 7902e71029eSTetsuo Handa bool task_valid) 79141fef0eeSMarcin Slusarz { 79241fef0eeSMarcin Slusarz } 79341fef0eeSMarcin Slusarz 79441fef0eeSMarcin Slusarz static inline void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result, 7952e71029eSTetsuo Handa bool task_valid) 79641fef0eeSMarcin Slusarz { 79741fef0eeSMarcin Slusarz } 79841fef0eeSMarcin Slusarz 79941fef0eeSMarcin Slusarz static inline void xfrm_audit_state_add(struct xfrm_state *x, int result, 8002e71029eSTetsuo Handa bool task_valid) 80141fef0eeSMarcin Slusarz { 80241fef0eeSMarcin Slusarz } 80341fef0eeSMarcin Slusarz 80441fef0eeSMarcin Slusarz static inline void xfrm_audit_state_delete(struct xfrm_state *x, int result, 8052e71029eSTetsuo Handa bool task_valid) 80641fef0eeSMarcin Slusarz { 80741fef0eeSMarcin Slusarz } 80841fef0eeSMarcin Slusarz 80941fef0eeSMarcin Slusarz static inline void xfrm_audit_state_replay_overflow(struct xfrm_state *x, 81041fef0eeSMarcin Slusarz struct sk_buff *skb) 81141fef0eeSMarcin Slusarz { 81241fef0eeSMarcin Slusarz } 81341fef0eeSMarcin Slusarz 8149fdc4883SSteffen Klassert static inline void xfrm_audit_state_replay(struct xfrm_state *x, 8159fdc4883SSteffen Klassert struct sk_buff *skb, __be32 net_seq) 8169fdc4883SSteffen Klassert { 8179fdc4883SSteffen Klassert } 8189fdc4883SSteffen Klassert 81941fef0eeSMarcin Slusarz static inline void xfrm_audit_state_notfound_simple(struct sk_buff *skb, 82041fef0eeSMarcin Slusarz u16 family) 82141fef0eeSMarcin Slusarz { 82241fef0eeSMarcin Slusarz } 82341fef0eeSMarcin Slusarz 82441fef0eeSMarcin Slusarz static inline void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, 82541fef0eeSMarcin Slusarz __be32 net_spi, __be32 net_seq) 82641fef0eeSMarcin Slusarz { 82741fef0eeSMarcin Slusarz } 82841fef0eeSMarcin Slusarz 82941fef0eeSMarcin Slusarz static inline void xfrm_audit_state_icvfail(struct xfrm_state *x, 83041fef0eeSMarcin Slusarz struct sk_buff *skb, u8 proto) 83141fef0eeSMarcin Slusarz { 83241fef0eeSMarcin Slusarz } 833c9204d9cSJoy Latten #endif /* CONFIG_AUDITSYSCALL */ 834161a09e7SJoy Latten 8351da177e4SLinus Torvalds static inline void xfrm_pol_hold(struct xfrm_policy *policy) 8361da177e4SLinus Torvalds { 8371da177e4SLinus Torvalds if (likely(policy != NULL)) 838850a6212SReshetova, Elena refcount_inc(&policy->refcnt); 8391da177e4SLinus Torvalds } 8401da177e4SLinus Torvalds 841d511337aSJoe Perches void xfrm_policy_destroy(struct xfrm_policy *policy); 8421da177e4SLinus Torvalds 8431da177e4SLinus Torvalds static inline void xfrm_pol_put(struct xfrm_policy *policy) 8441da177e4SLinus Torvalds { 845850a6212SReshetova, Elena if (refcount_dec_and_test(&policy->refcnt)) 84664c31b3fSWANG Cong xfrm_policy_destroy(policy); 8471da177e4SLinus Torvalds } 8481da177e4SLinus Torvalds 8494e81bb83SMasahide NAKAMURA static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols) 8504e81bb83SMasahide NAKAMURA { 8514e81bb83SMasahide NAKAMURA int i; 8524e81bb83SMasahide NAKAMURA for (i = npols - 1; i >= 0; --i) 8534e81bb83SMasahide NAKAMURA xfrm_pol_put(pols[i]); 8544e81bb83SMasahide NAKAMURA } 8554e81bb83SMasahide NAKAMURA 856f75a2804SCong Wang void __xfrm_state_destroy(struct xfrm_state *, bool); 8571da177e4SLinus Torvalds 85821380b81SHerbert Xu static inline void __xfrm_state_put(struct xfrm_state *x) 85921380b81SHerbert Xu { 86088755e9cSReshetova, Elena refcount_dec(&x->refcnt); 86121380b81SHerbert Xu } 86221380b81SHerbert Xu 8631da177e4SLinus Torvalds static inline void xfrm_state_put(struct xfrm_state *x) 8641da177e4SLinus Torvalds { 86588755e9cSReshetova, Elena if (refcount_dec_and_test(&x->refcnt)) 866f75a2804SCong Wang __xfrm_state_destroy(x, false); 867f75a2804SCong Wang } 868f75a2804SCong Wang 869f75a2804SCong Wang static inline void xfrm_state_put_sync(struct xfrm_state *x) 870f75a2804SCong Wang { 871f75a2804SCong Wang if (refcount_dec_and_test(&x->refcnt)) 872f75a2804SCong Wang __xfrm_state_destroy(x, true); 8731da177e4SLinus Torvalds } 8741da177e4SLinus Torvalds 8751da177e4SLinus Torvalds static inline void xfrm_state_hold(struct xfrm_state *x) 8761da177e4SLinus Torvalds { 87788755e9cSReshetova, Elena refcount_inc(&x->refcnt); 8781da177e4SLinus Torvalds } 8791da177e4SLinus Torvalds 8801744a8feSDavid S. Miller static inline bool addr_match(const void *token1, const void *token2, 881e1b0048eSAlexey Dobriyan unsigned int prefixlen) 8821da177e4SLinus Torvalds { 8831744a8feSDavid S. Miller const __be32 *a1 = token1; 8841744a8feSDavid S. Miller const __be32 *a2 = token2; 885e1b0048eSAlexey Dobriyan unsigned int pdw; 886e1b0048eSAlexey Dobriyan unsigned int pbi; 8871da177e4SLinus Torvalds 888a6337463Sjamal pdw = prefixlen >> 5; /* num of whole u32 in prefix */ 8891da177e4SLinus Torvalds pbi = prefixlen & 0x1f; /* num of bits in incomplete u32 in prefix */ 8901da177e4SLinus Torvalds 8911da177e4SLinus Torvalds if (pdw) 8921da177e4SLinus Torvalds if (memcmp(a1, a2, pdw << 2)) 8931744a8feSDavid S. Miller return false; 8941da177e4SLinus Torvalds 8951da177e4SLinus Torvalds if (pbi) { 8965f19343fSAl Viro __be32 mask; 8971da177e4SLinus Torvalds 8981da177e4SLinus Torvalds mask = htonl((0xffffffff) << (32 - pbi)); 8991da177e4SLinus Torvalds 9001da177e4SLinus Torvalds if ((a1[pdw] ^ a2[pdw]) & mask) 9011744a8feSDavid S. Miller return false; 9021da177e4SLinus Torvalds } 9031da177e4SLinus Torvalds 9041744a8feSDavid S. Miller return true; 9051da177e4SLinus Torvalds } 9061da177e4SLinus Torvalds 90726bff940SAlexey Dobriyan static inline bool addr4_match(__be32 a1, __be32 a2, u8 prefixlen) 90826bff940SAlexey Dobriyan { 90926bff940SAlexey Dobriyan /* C99 6.5.7 (3): u32 << 32 is undefined behaviour */ 9106c786bcbSAlexey Dobriyan if (sizeof(long) == 4 && prefixlen == 0) 91126bff940SAlexey Dobriyan return true; 9126c786bcbSAlexey Dobriyan return !((a1 ^ a2) & htonl(~0UL << (32 - prefixlen))); 91326bff940SAlexey Dobriyan } 91426bff940SAlexey Dobriyan 9151da177e4SLinus Torvalds static __inline__ 9166281dcc9SDavid S. Miller __be16 xfrm_flowi_sport(const struct flowi *fl, const union flowi_uli *uli) 9171da177e4SLinus Torvalds { 918f9d07e41SAl Viro __be16 port; 9191d28f42cSDavid S. Miller switch(fl->flowi_proto) { 9201da177e4SLinus Torvalds case IPPROTO_TCP: 9211da177e4SLinus Torvalds case IPPROTO_UDP: 922ba4e58ecSGerrit Renker case IPPROTO_UDPLITE: 9231da177e4SLinus Torvalds case IPPROTO_SCTP: 9246281dcc9SDavid S. Miller port = uli->ports.sport; 9251da177e4SLinus Torvalds break; 9261da177e4SLinus Torvalds case IPPROTO_ICMP: 9271da177e4SLinus Torvalds case IPPROTO_ICMPV6: 9286281dcc9SDavid S. Miller port = htons(uli->icmpt.type); 9291da177e4SLinus Torvalds break; 9302ce4272aSMasahide NAKAMURA case IPPROTO_MH: 9316281dcc9SDavid S. Miller port = htons(uli->mht.type); 9322ce4272aSMasahide NAKAMURA break; 933cc9ff19dSTimo Teräs case IPPROTO_GRE: 9346281dcc9SDavid S. Miller port = htons(ntohl(uli->gre_key) >> 16); 935cc9ff19dSTimo Teräs break; 9361da177e4SLinus Torvalds default: 9371da177e4SLinus Torvalds port = 0; /*XXX*/ 9381da177e4SLinus Torvalds } 9391da177e4SLinus Torvalds return port; 9401da177e4SLinus Torvalds } 9411da177e4SLinus Torvalds 9421da177e4SLinus Torvalds static __inline__ 9436281dcc9SDavid S. Miller __be16 xfrm_flowi_dport(const struct flowi *fl, const union flowi_uli *uli) 9441da177e4SLinus Torvalds { 945f9d07e41SAl Viro __be16 port; 9461d28f42cSDavid S. Miller switch(fl->flowi_proto) { 9471da177e4SLinus Torvalds case IPPROTO_TCP: 9481da177e4SLinus Torvalds case IPPROTO_UDP: 949ba4e58ecSGerrit Renker case IPPROTO_UDPLITE: 9501da177e4SLinus Torvalds case IPPROTO_SCTP: 9516281dcc9SDavid S. Miller port = uli->ports.dport; 9521da177e4SLinus Torvalds break; 9531da177e4SLinus Torvalds case IPPROTO_ICMP: 9541da177e4SLinus Torvalds case IPPROTO_ICMPV6: 9556281dcc9SDavid S. Miller port = htons(uli->icmpt.code); 9561da177e4SLinus Torvalds break; 957cc9ff19dSTimo Teräs case IPPROTO_GRE: 9586281dcc9SDavid S. Miller port = htons(ntohl(uli->gre_key) & 0xffff); 959cc9ff19dSTimo Teräs break; 9601da177e4SLinus Torvalds default: 9611da177e4SLinus Torvalds port = 0; /*XXX*/ 9621da177e4SLinus Torvalds } 9631da177e4SLinus Torvalds return port; 9641da177e4SLinus Torvalds } 9651da177e4SLinus Torvalds 966d511337aSJoe Perches bool xfrm_selector_match(const struct xfrm_selector *sel, 967d511337aSJoe Perches const struct flowi *fl, unsigned short family); 9681da177e4SLinus Torvalds 969df71837dSTrent Jaeger #ifdef CONFIG_SECURITY_NETWORK_XFRM 970df71837dSTrent Jaeger /* If neither has a context --> match 971df71837dSTrent Jaeger * Otherwise, both must have a context and the sids, doi, alg must match 972df71837dSTrent Jaeger */ 973bc9b35adSDavid S. Miller static inline bool xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2) 974df71837dSTrent Jaeger { 975df71837dSTrent Jaeger return ((!s1 && !s2) || 976df71837dSTrent Jaeger (s1 && s2 && 977df71837dSTrent Jaeger (s1->ctx_sid == s2->ctx_sid) && 978df71837dSTrent Jaeger (s1->ctx_doi == s2->ctx_doi) && 979df71837dSTrent Jaeger (s1->ctx_alg == s2->ctx_alg))); 980df71837dSTrent Jaeger } 981df71837dSTrent Jaeger #else 982bc9b35adSDavid S. Miller static inline bool xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2) 983df71837dSTrent Jaeger { 984bc9b35adSDavid S. Miller return true; 985df71837dSTrent Jaeger } 986df71837dSTrent Jaeger #endif 987df71837dSTrent Jaeger 9881da177e4SLinus Torvalds /* A struct encoding bundle of transformations to apply to some set of flow. 9891da177e4SLinus Torvalds * 990b6ca8bd5SDavid Miller * xdst->child points to the next element of bundle. 9911da177e4SLinus Torvalds * dst->xfrm points to an instanse of transformer. 9921da177e4SLinus Torvalds * 9931da177e4SLinus Torvalds * Due to unfortunate limitations of current routing cache, which we 9941da177e4SLinus Torvalds * have no time to fix, it mirrors struct rtable and bound to the same 9951da177e4SLinus Torvalds * routing key, including saddr,daddr. However, we can have many of 9961da177e4SLinus Torvalds * bundles differing by session id. All the bundles grow from a parent 9971da177e4SLinus Torvalds * policy rule. 9981da177e4SLinus Torvalds */ 999fd2c3ef7SEric Dumazet struct xfrm_dst { 10001da177e4SLinus Torvalds union { 10011da177e4SLinus Torvalds struct dst_entry dst; 10021da177e4SLinus Torvalds struct rtable rt; 10031da177e4SLinus Torvalds struct rt6_info rt6; 10041da177e4SLinus Torvalds } u; 10051da177e4SLinus Torvalds struct dst_entry *route; 1006b6ca8bd5SDavid Miller struct dst_entry *child; 10070f6c480fSDavid Miller struct dst_entry *path; 100880c802f3STimo Teräs struct xfrm_policy *pols[XFRM_POLICY_TYPE_MAX]; 100980c802f3STimo Teräs int num_pols, num_xfrms; 101080c802f3STimo Teräs u32 xfrm_genid; 101180c802f3STimo Teräs u32 policy_genid; 10121da177e4SLinus Torvalds u32 route_mtu_cached; 10131da177e4SLinus Torvalds u32 child_mtu_cached; 101492d63decSHideaki YOSHIFUJI u32 route_cookie; 101592d63decSHideaki YOSHIFUJI u32 path_cookie; 10161da177e4SLinus Torvalds }; 10171da177e4SLinus Torvalds 10180f6c480fSDavid Miller static inline struct dst_entry *xfrm_dst_path(const struct dst_entry *dst) 10190f6c480fSDavid Miller { 10200f6c480fSDavid Miller #ifdef CONFIG_XFRM 10210f6c480fSDavid Miller if (dst->xfrm) { 10220f6c480fSDavid Miller const struct xfrm_dst *xdst = (const struct xfrm_dst *) dst; 10230f6c480fSDavid Miller 10240f6c480fSDavid Miller return xdst->path; 10250f6c480fSDavid Miller } 10260f6c480fSDavid Miller #endif 10270f6c480fSDavid Miller return (struct dst_entry *) dst; 10280f6c480fSDavid Miller } 10290f6c480fSDavid Miller 1030b92cf4aaSDavid Miller static inline struct dst_entry *xfrm_dst_child(const struct dst_entry *dst) 1031b92cf4aaSDavid Miller { 1032b92cf4aaSDavid Miller #ifdef CONFIG_XFRM 1033b6ca8bd5SDavid Miller if (dst->xfrm) { 1034b6ca8bd5SDavid Miller struct xfrm_dst *xdst = (struct xfrm_dst *) dst; 1035b6ca8bd5SDavid Miller return xdst->child; 1036b6ca8bd5SDavid Miller } 1037b92cf4aaSDavid Miller #endif 1038b92cf4aaSDavid Miller return NULL; 1039b92cf4aaSDavid Miller } 1040b92cf4aaSDavid Miller 1041def8b4faSAlexey Dobriyan #ifdef CONFIG_XFRM 104245b018beSDavid Miller static inline void xfrm_dst_set_child(struct xfrm_dst *xdst, struct dst_entry *child) 104345b018beSDavid Miller { 1044b6ca8bd5SDavid Miller xdst->child = child; 104545b018beSDavid Miller } 104645b018beSDavid Miller 1047aabc9761SHerbert Xu static inline void xfrm_dst_destroy(struct xfrm_dst *xdst) 1048aabc9761SHerbert Xu { 104980c802f3STimo Teräs xfrm_pols_put(xdst->pols, xdst->num_pols); 1050aabc9761SHerbert Xu dst_release(xdst->route); 1051aabc9761SHerbert Xu if (likely(xdst->u.dst.xfrm)) 1052aabc9761SHerbert Xu xfrm_state_put(xdst->u.dst.xfrm); 1053aabc9761SHerbert Xu } 1054def8b4faSAlexey Dobriyan #endif 1055aabc9761SHerbert Xu 1056d511337aSJoe Perches void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev); 1057aabc9761SHerbert Xu 1058f203b76dSSteffen Klassert struct xfrm_if_parms { 1059f203b76dSSteffen Klassert char name[IFNAMSIZ]; /* name of XFRM device */ 1060f203b76dSSteffen Klassert int link; /* ifindex of underlying L2 interface */ 1061f203b76dSSteffen Klassert u32 if_id; /* interface identifyer */ 1062f203b76dSSteffen Klassert }; 1063f203b76dSSteffen Klassert 1064f203b76dSSteffen Klassert struct xfrm_if { 1065f203b76dSSteffen Klassert struct xfrm_if __rcu *next; /* next interface in list */ 1066f203b76dSSteffen Klassert struct net_device *dev; /* virtual device associated with interface */ 1067f203b76dSSteffen Klassert struct net_device *phydev; /* physical device */ 1068f203b76dSSteffen Klassert struct net *net; /* netns for packet i/o */ 1069f203b76dSSteffen Klassert struct xfrm_if_parms p; /* interface parms */ 1070f203b76dSSteffen Klassert 1071f203b76dSSteffen Klassert struct gro_cells gro_cells; 1072f203b76dSSteffen Klassert }; 1073f203b76dSSteffen Klassert 107454ef207aSSteffen Klassert struct xfrm_offload { 107554ef207aSSteffen Klassert /* Output sequence number for replay protection on offloading. */ 107654ef207aSSteffen Klassert struct { 107754ef207aSSteffen Klassert __u32 low; 107854ef207aSSteffen Klassert __u32 hi; 107954ef207aSSteffen Klassert } seq; 108054ef207aSSteffen Klassert 108154ef207aSSteffen Klassert __u32 flags; 108254ef207aSSteffen Klassert #define SA_DELETE_REQ 1 108354ef207aSSteffen Klassert #define CRYPTO_DONE 2 108454ef207aSSteffen Klassert #define CRYPTO_NEXT_DONE 4 108554ef207aSSteffen Klassert #define CRYPTO_FALLBACK 8 108654ef207aSSteffen Klassert #define XFRM_GSO_SEGMENT 16 108754ef207aSSteffen Klassert #define XFRM_GRO 32 108847ebcc0bSYossi Kuperman #define XFRM_ESP_NO_TRAILER 64 1089f53c7239SSteffen Klassert #define XFRM_DEV_RESUME 128 109054ef207aSSteffen Klassert 109154ef207aSSteffen Klassert __u32 status; 109254ef207aSSteffen Klassert #define CRYPTO_SUCCESS 1 109354ef207aSSteffen Klassert #define CRYPTO_GENERIC_ERROR 2 109454ef207aSSteffen Klassert #define CRYPTO_TRANSPORT_AH_AUTH_FAILED 4 109554ef207aSSteffen Klassert #define CRYPTO_TRANSPORT_ESP_AUTH_FAILED 8 109654ef207aSSteffen Klassert #define CRYPTO_TUNNEL_AH_AUTH_FAILED 16 109754ef207aSSteffen Klassert #define CRYPTO_TUNNEL_ESP_AUTH_FAILED 32 109854ef207aSSteffen Klassert #define CRYPTO_INVALID_PACKET_SYNTAX 64 109954ef207aSSteffen Klassert #define CRYPTO_INVALID_PROTOCOL 128 110054ef207aSSteffen Klassert 110154ef207aSSteffen Klassert __u8 proto; 110254ef207aSSteffen Klassert }; 110354ef207aSSteffen Klassert 1104fd2c3ef7SEric Dumazet struct sec_path { 11051da177e4SLinus Torvalds int len; 110654ef207aSSteffen Klassert int olen; 110754ef207aSSteffen Klassert 1108dbe5b4aaSHerbert Xu struct xfrm_state *xvec[XFRM_MAX_DEPTH]; 110954ef207aSSteffen Klassert struct xfrm_offload ovec[XFRM_MAX_OFFLOAD_DEPTH]; 11101da177e4SLinus Torvalds }; 11111da177e4SLinus Torvalds 11120ca64da1SFlorian Westphal struct sec_path *secpath_set(struct sk_buff *skb); 11131da177e4SLinus Torvalds 11141da177e4SLinus Torvalds static inline void 11151da177e4SLinus Torvalds secpath_reset(struct sk_buff *skb) 11161da177e4SLinus Torvalds { 11171da177e4SLinus Torvalds #ifdef CONFIG_XFRM 11184165079bSFlorian Westphal skb_ext_del(skb, SKB_EXT_SEC_PATH); 11191da177e4SLinus Torvalds #endif 11201da177e4SLinus Torvalds } 11211da177e4SLinus Torvalds 11221da177e4SLinus Torvalds static inline int 11236cc32961SDavid S. Miller xfrm_addr_any(const xfrm_address_t *addr, unsigned short family) 1124a1e59abfSPatrick McHardy { 1125a1e59abfSPatrick McHardy switch (family) { 1126a1e59abfSPatrick McHardy case AF_INET: 1127a1e59abfSPatrick McHardy return addr->a4 == 0; 1128a1e59abfSPatrick McHardy case AF_INET6: 112915e318bdSJiri Benc return ipv6_addr_any(&addr->in6); 1130a1e59abfSPatrick McHardy } 1131a1e59abfSPatrick McHardy return 0; 1132a1e59abfSPatrick McHardy } 1133a1e59abfSPatrick McHardy 1134a1e59abfSPatrick McHardy static inline int 113521eddb5cSDavid S. Miller __xfrm4_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x) 11361da177e4SLinus Torvalds { 11371da177e4SLinus Torvalds return (tmpl->saddr.a4 && 11381da177e4SLinus Torvalds tmpl->saddr.a4 != x->props.saddr.a4); 11391da177e4SLinus Torvalds } 11401da177e4SLinus Torvalds 11411da177e4SLinus Torvalds static inline int 114221eddb5cSDavid S. Miller __xfrm6_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x) 11431da177e4SLinus Torvalds { 11441da177e4SLinus Torvalds return (!ipv6_addr_any((struct in6_addr*)&tmpl->saddr) && 1145ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 !ipv6_addr_equal((struct in6_addr *)&tmpl->saddr, (struct in6_addr*)&x->props.saddr)); 11461da177e4SLinus Torvalds } 11471da177e4SLinus Torvalds 11481da177e4SLinus Torvalds static inline int 114921eddb5cSDavid S. Miller xfrm_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x, unsigned short family) 11501da177e4SLinus Torvalds { 11511da177e4SLinus Torvalds switch (family) { 11521da177e4SLinus Torvalds case AF_INET: 11531da177e4SLinus Torvalds return __xfrm4_state_addr_cmp(tmpl, x); 11541da177e4SLinus Torvalds case AF_INET6: 11551da177e4SLinus Torvalds return __xfrm6_state_addr_cmp(tmpl, x); 11561da177e4SLinus Torvalds } 11571da177e4SLinus Torvalds return !0; 11581da177e4SLinus Torvalds } 11591da177e4SLinus Torvalds 11601da177e4SLinus Torvalds #ifdef CONFIG_XFRM 1161d511337aSJoe Perches int __xfrm_policy_check(struct sock *, int dir, struct sk_buff *skb, 1162d511337aSJoe Perches unsigned short family); 11631da177e4SLinus Torvalds 1164d5422efeSHerbert Xu static inline int __xfrm_policy_check2(struct sock *sk, int dir, 1165d5422efeSHerbert Xu struct sk_buff *skb, 1166d5422efeSHerbert Xu unsigned int family, int reverse) 11671da177e4SLinus Torvalds { 1168f6e1e25dSAlexey Dobriyan struct net *net = dev_net(skb->dev); 1169d5422efeSHerbert Xu int ndir = dir | (reverse ? XFRM_POLICY_MASK + 1 : 0); 1170d5422efeSHerbert Xu 11711da177e4SLinus Torvalds if (sk && sk->sk_policy[XFRM_POLICY_IN]) 1172d5422efeSHerbert Xu return __xfrm_policy_check(sk, ndir, skb, family); 11731da177e4SLinus Torvalds 117426912e37SFlorian Westphal return (!net->xfrm.policy_count[dir] && !secpath_exists(skb)) || 1175adf30907SEric Dumazet (skb_dst(skb)->flags & DST_NOPOLICY) || 1176d5422efeSHerbert Xu __xfrm_policy_check(sk, ndir, skb, family); 1177d5422efeSHerbert Xu } 1178d5422efeSHerbert Xu 1179d5422efeSHerbert Xu static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) 1180d5422efeSHerbert Xu { 1181d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, family, 0); 11821da177e4SLinus Torvalds } 11831da177e4SLinus Torvalds 11841da177e4SLinus Torvalds static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 11851da177e4SLinus Torvalds { 11861da177e4SLinus Torvalds return xfrm_policy_check(sk, dir, skb, AF_INET); 11871da177e4SLinus Torvalds } 11881da177e4SLinus Torvalds 11891da177e4SLinus Torvalds static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 11901da177e4SLinus Torvalds { 11911da177e4SLinus Torvalds return xfrm_policy_check(sk, dir, skb, AF_INET6); 11921da177e4SLinus Torvalds } 11931da177e4SLinus Torvalds 1194d5422efeSHerbert Xu static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir, 1195d5422efeSHerbert Xu struct sk_buff *skb) 1196d5422efeSHerbert Xu { 1197d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, AF_INET, 1); 1198d5422efeSHerbert Xu } 1199d5422efeSHerbert Xu 1200d5422efeSHerbert Xu static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, 1201d5422efeSHerbert Xu struct sk_buff *skb) 1202d5422efeSHerbert Xu { 1203d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, AF_INET6, 1); 1204d5422efeSHerbert Xu } 1205d5422efeSHerbert Xu 1206d511337aSJoe Perches int __xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, 1207d5422efeSHerbert Xu unsigned int family, int reverse); 1208d5422efeSHerbert Xu 1209d5422efeSHerbert Xu static inline int xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, 1210d5422efeSHerbert Xu unsigned int family) 1211d5422efeSHerbert Xu { 1212d5422efeSHerbert Xu return __xfrm_decode_session(skb, fl, family, 0); 1213d5422efeSHerbert Xu } 1214d5422efeSHerbert Xu 1215d5422efeSHerbert Xu static inline int xfrm_decode_session_reverse(struct sk_buff *skb, 1216d5422efeSHerbert Xu struct flowi *fl, 1217d5422efeSHerbert Xu unsigned int family) 1218d5422efeSHerbert Xu { 1219d5422efeSHerbert Xu return __xfrm_decode_session(skb, fl, family, 1); 1220d5422efeSHerbert Xu } 1221d5422efeSHerbert Xu 1222d511337aSJoe Perches int __xfrm_route_forward(struct sk_buff *skb, unsigned short family); 12231da177e4SLinus Torvalds 12241da177e4SLinus Torvalds static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family) 12251da177e4SLinus Torvalds { 122699a66657SAlexey Dobriyan struct net *net = dev_net(skb->dev); 122799a66657SAlexey Dobriyan 122899a66657SAlexey Dobriyan return !net->xfrm.policy_count[XFRM_POLICY_OUT] || 1229adf30907SEric Dumazet (skb_dst(skb)->flags & DST_NOXFRM) || 12301da177e4SLinus Torvalds __xfrm_route_forward(skb, family); 12311da177e4SLinus Torvalds } 12321da177e4SLinus Torvalds 12331da177e4SLinus Torvalds static inline int xfrm4_route_forward(struct sk_buff *skb) 12341da177e4SLinus Torvalds { 12351da177e4SLinus Torvalds return xfrm_route_forward(skb, AF_INET); 12361da177e4SLinus Torvalds } 12371da177e4SLinus Torvalds 12381da177e4SLinus Torvalds static inline int xfrm6_route_forward(struct sk_buff *skb) 12391da177e4SLinus Torvalds { 12401da177e4SLinus Torvalds return xfrm_route_forward(skb, AF_INET6); 12411da177e4SLinus Torvalds } 12421da177e4SLinus Torvalds 1243d188ba86SEric Dumazet int __xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk); 12441da177e4SLinus Torvalds 1245d188ba86SEric Dumazet static inline int xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk) 12461da177e4SLinus Torvalds { 1247d188ba86SEric Dumazet sk->sk_policy[0] = NULL; 1248d188ba86SEric Dumazet sk->sk_policy[1] = NULL; 1249d188ba86SEric Dumazet if (unlikely(osk->sk_policy[0] || osk->sk_policy[1])) 1250d188ba86SEric Dumazet return __xfrm_sk_clone_policy(sk, osk); 12511da177e4SLinus Torvalds return 0; 12521da177e4SLinus Torvalds } 12531da177e4SLinus Torvalds 1254d511337aSJoe Perches int xfrm_policy_delete(struct xfrm_policy *pol, int dir); 12551da177e4SLinus Torvalds 12561da177e4SLinus Torvalds static inline void xfrm_sk_free_policy(struct sock *sk) 12571da177e4SLinus Torvalds { 1258d188ba86SEric Dumazet struct xfrm_policy *pol; 1259d188ba86SEric Dumazet 1260d188ba86SEric Dumazet pol = rcu_dereference_protected(sk->sk_policy[0], 1); 1261d188ba86SEric Dumazet if (unlikely(pol != NULL)) { 1262d188ba86SEric Dumazet xfrm_policy_delete(pol, XFRM_POLICY_MAX); 12631da177e4SLinus Torvalds sk->sk_policy[0] = NULL; 12641da177e4SLinus Torvalds } 1265d188ba86SEric Dumazet pol = rcu_dereference_protected(sk->sk_policy[1], 1); 1266d188ba86SEric Dumazet if (unlikely(pol != NULL)) { 1267d188ba86SEric Dumazet xfrm_policy_delete(pol, XFRM_POLICY_MAX+1); 12681da177e4SLinus Torvalds sk->sk_policy[1] = NULL; 12691da177e4SLinus Torvalds } 12701da177e4SLinus Torvalds } 12711da177e4SLinus Torvalds 12721da177e4SLinus Torvalds #else 12731da177e4SLinus Torvalds 12741da177e4SLinus Torvalds static inline void xfrm_sk_free_policy(struct sock *sk) {} 1275d188ba86SEric Dumazet static inline int xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk) { return 0; } 12761da177e4SLinus Torvalds static inline int xfrm6_route_forward(struct sk_buff *skb) { return 1; } 12771da177e4SLinus Torvalds static inline int xfrm4_route_forward(struct sk_buff *skb) { return 1; } 12781da177e4SLinus Torvalds static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 12791da177e4SLinus Torvalds { 12801da177e4SLinus Torvalds return 1; 12811da177e4SLinus Torvalds } 12821da177e4SLinus Torvalds static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 12831da177e4SLinus Torvalds { 12841da177e4SLinus Torvalds return 1; 12851da177e4SLinus Torvalds } 12861da177e4SLinus Torvalds static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) 12871da177e4SLinus Torvalds { 12881da177e4SLinus Torvalds return 1; 12891da177e4SLinus Torvalds } 1290d5422efeSHerbert Xu static inline int xfrm_decode_session_reverse(struct sk_buff *skb, 1291d5422efeSHerbert Xu struct flowi *fl, 1292d5422efeSHerbert Xu unsigned int family) 1293d5422efeSHerbert Xu { 1294d5422efeSHerbert Xu return -ENOSYS; 1295d5422efeSHerbert Xu } 1296d5422efeSHerbert Xu static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir, 1297d5422efeSHerbert Xu struct sk_buff *skb) 1298d5422efeSHerbert Xu { 1299d5422efeSHerbert Xu return 1; 1300d5422efeSHerbert Xu } 1301d5422efeSHerbert Xu static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, 1302d5422efeSHerbert Xu struct sk_buff *skb) 1303d5422efeSHerbert Xu { 1304d5422efeSHerbert Xu return 1; 1305d5422efeSHerbert Xu } 13061da177e4SLinus Torvalds #endif 13071da177e4SLinus Torvalds 13081da177e4SLinus Torvalds static __inline__ 1309e8a4e377SDavid S. Miller xfrm_address_t *xfrm_flowi_daddr(const struct flowi *fl, unsigned short family) 13101da177e4SLinus Torvalds { 13111da177e4SLinus Torvalds switch (family){ 13121da177e4SLinus Torvalds case AF_INET: 13137e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip4.daddr; 13141da177e4SLinus Torvalds case AF_INET6: 13157e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip6.daddr; 13161da177e4SLinus Torvalds } 13171da177e4SLinus Torvalds return NULL; 13181da177e4SLinus Torvalds } 13191da177e4SLinus Torvalds 13201da177e4SLinus Torvalds static __inline__ 1321e8a4e377SDavid S. Miller xfrm_address_t *xfrm_flowi_saddr(const struct flowi *fl, unsigned short family) 13221da177e4SLinus Torvalds { 13231da177e4SLinus Torvalds switch (family){ 13241da177e4SLinus Torvalds case AF_INET: 13257e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip4.saddr; 13261da177e4SLinus Torvalds case AF_INET6: 13277e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip6.saddr; 13281da177e4SLinus Torvalds } 13291da177e4SLinus Torvalds return NULL; 13301da177e4SLinus Torvalds } 13311da177e4SLinus Torvalds 13329bb182a7SYOSHIFUJI Hideaki static __inline__ 1333e8a4e377SDavid S. Miller void xfrm_flowi_addr_get(const struct flowi *fl, 13349bb182a7SYOSHIFUJI Hideaki xfrm_address_t *saddr, xfrm_address_t *daddr, 13359bb182a7SYOSHIFUJI Hideaki unsigned short family) 13369bb182a7SYOSHIFUJI Hideaki { 13379bb182a7SYOSHIFUJI Hideaki switch(family) { 13389bb182a7SYOSHIFUJI Hideaki case AF_INET: 13397e1dc7b6SDavid S. Miller memcpy(&saddr->a4, &fl->u.ip4.saddr, sizeof(saddr->a4)); 13407e1dc7b6SDavid S. Miller memcpy(&daddr->a4, &fl->u.ip4.daddr, sizeof(daddr->a4)); 13419bb182a7SYOSHIFUJI Hideaki break; 13429bb182a7SYOSHIFUJI Hideaki case AF_INET6: 134315e318bdSJiri Benc saddr->in6 = fl->u.ip6.saddr; 134415e318bdSJiri Benc daddr->in6 = fl->u.ip6.daddr; 13459bb182a7SYOSHIFUJI Hideaki break; 13469bb182a7SYOSHIFUJI Hideaki } 13479bb182a7SYOSHIFUJI Hideaki } 13489bb182a7SYOSHIFUJI Hideaki 13491da177e4SLinus Torvalds static __inline__ int 1350f8848067SDavid S. Miller __xfrm4_state_addr_check(const struct xfrm_state *x, 1351f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr) 13521da177e4SLinus Torvalds { 13531da177e4SLinus Torvalds if (daddr->a4 == x->id.daddr.a4 && 13541da177e4SLinus Torvalds (saddr->a4 == x->props.saddr.a4 || !saddr->a4 || !x->props.saddr.a4)) 13551da177e4SLinus Torvalds return 1; 13561da177e4SLinus Torvalds return 0; 13571da177e4SLinus Torvalds } 13581da177e4SLinus Torvalds 13591da177e4SLinus Torvalds static __inline__ int 1360f8848067SDavid S. Miller __xfrm6_state_addr_check(const struct xfrm_state *x, 1361f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr) 13621da177e4SLinus Torvalds { 1363ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 if (ipv6_addr_equal((struct in6_addr *)daddr, (struct in6_addr *)&x->id.daddr) && 1364ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 (ipv6_addr_equal((struct in6_addr *)saddr, (struct in6_addr *)&x->props.saddr) || 13651da177e4SLinus Torvalds ipv6_addr_any((struct in6_addr *)saddr) || 13661da177e4SLinus Torvalds ipv6_addr_any((struct in6_addr *)&x->props.saddr))) 13671da177e4SLinus Torvalds return 1; 13681da177e4SLinus Torvalds return 0; 13691da177e4SLinus Torvalds } 13701da177e4SLinus Torvalds 13711da177e4SLinus Torvalds static __inline__ int 1372f8848067SDavid S. Miller xfrm_state_addr_check(const struct xfrm_state *x, 1373f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr, 13741da177e4SLinus Torvalds unsigned short family) 13751da177e4SLinus Torvalds { 13761da177e4SLinus Torvalds switch (family) { 13771da177e4SLinus Torvalds case AF_INET: 13781da177e4SLinus Torvalds return __xfrm4_state_addr_check(x, daddr, saddr); 13791da177e4SLinus Torvalds case AF_INET6: 13801da177e4SLinus Torvalds return __xfrm6_state_addr_check(x, daddr, saddr); 13811da177e4SLinus Torvalds } 13821da177e4SLinus Torvalds return 0; 13831da177e4SLinus Torvalds } 13841da177e4SLinus Torvalds 1385e53820deSMasahide NAKAMURA static __inline__ int 1386f8848067SDavid S. Miller xfrm_state_addr_flow_check(const struct xfrm_state *x, const struct flowi *fl, 1387e53820deSMasahide NAKAMURA unsigned short family) 1388e53820deSMasahide NAKAMURA { 1389e53820deSMasahide NAKAMURA switch (family) { 1390e53820deSMasahide NAKAMURA case AF_INET: 1391e53820deSMasahide NAKAMURA return __xfrm4_state_addr_check(x, 13927e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip4.daddr, 13937e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip4.saddr); 1394e53820deSMasahide NAKAMURA case AF_INET6: 1395e53820deSMasahide NAKAMURA return __xfrm6_state_addr_check(x, 13967e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip6.daddr, 13977e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip6.saddr); 1398e53820deSMasahide NAKAMURA } 1399e53820deSMasahide NAKAMURA return 0; 1400e53820deSMasahide NAKAMURA } 1401e53820deSMasahide NAKAMURA 1402f8848067SDavid S. Miller static inline int xfrm_state_kern(const struct xfrm_state *x) 14031da177e4SLinus Torvalds { 14041da177e4SLinus Torvalds return atomic_read(&x->tunnel_users); 14051da177e4SLinus Torvalds } 14061da177e4SLinus Torvalds 14075794708fSMasahide NAKAMURA static inline int xfrm_id_proto_match(u8 proto, u8 userproto) 14085794708fSMasahide NAKAMURA { 1409dc00a525SMasahide NAKAMURA return (!userproto || proto == userproto || 1410dc00a525SMasahide NAKAMURA (userproto == IPSEC_PROTO_ANY && (proto == IPPROTO_AH || 1411dc00a525SMasahide NAKAMURA proto == IPPROTO_ESP || 1412dc00a525SMasahide NAKAMURA proto == IPPROTO_COMP))); 14135794708fSMasahide NAKAMURA } 14145794708fSMasahide NAKAMURA 14151da177e4SLinus Torvalds /* 14161da177e4SLinus Torvalds * xfrm algorithm information 14171da177e4SLinus Torvalds */ 14181a6509d9SHerbert Xu struct xfrm_algo_aead_info { 1419165ecc63SHerbert Xu char *geniv; 14201a6509d9SHerbert Xu u16 icv_truncbits; 14211a6509d9SHerbert Xu }; 14221a6509d9SHerbert Xu 14231da177e4SLinus Torvalds struct xfrm_algo_auth_info { 14241da177e4SLinus Torvalds u16 icv_truncbits; 14251da177e4SLinus Torvalds u16 icv_fullbits; 14261da177e4SLinus Torvalds }; 14271da177e4SLinus Torvalds 14281da177e4SLinus Torvalds struct xfrm_algo_encr_info { 1429165ecc63SHerbert Xu char *geniv; 14301da177e4SLinus Torvalds u16 blockbits; 14311da177e4SLinus Torvalds u16 defkeybits; 14321da177e4SLinus Torvalds }; 14331da177e4SLinus Torvalds 14341da177e4SLinus Torvalds struct xfrm_algo_comp_info { 14351da177e4SLinus Torvalds u16 threshold; 14361da177e4SLinus Torvalds }; 14371da177e4SLinus Torvalds 14381da177e4SLinus Torvalds struct xfrm_algo_desc { 14391da177e4SLinus Torvalds char *name; 144004ff1260SHerbert Xu char *compat; 14411da177e4SLinus Torvalds u8 available:1; 14427e50f84cSJussi Kivilinna u8 pfkey_supported:1; 14431da177e4SLinus Torvalds union { 14441a6509d9SHerbert Xu struct xfrm_algo_aead_info aead; 14451da177e4SLinus Torvalds struct xfrm_algo_auth_info auth; 14461da177e4SLinus Torvalds struct xfrm_algo_encr_info encr; 14471da177e4SLinus Torvalds struct xfrm_algo_comp_info comp; 14481da177e4SLinus Torvalds } uinfo; 14491da177e4SLinus Torvalds struct sadb_alg desc; 14501da177e4SLinus Torvalds }; 14511da177e4SLinus Torvalds 14523328715eSSteffen Klassert /* XFRM protocol handlers. */ 14533328715eSSteffen Klassert struct xfrm4_protocol { 14543328715eSSteffen Klassert int (*handler)(struct sk_buff *skb); 14553328715eSSteffen Klassert int (*input_handler)(struct sk_buff *skb, int nexthdr, __be32 spi, 14563328715eSSteffen Klassert int encap_type); 14573328715eSSteffen Klassert int (*cb_handler)(struct sk_buff *skb, int err); 14583328715eSSteffen Klassert int (*err_handler)(struct sk_buff *skb, u32 info); 14593328715eSSteffen Klassert 14603328715eSSteffen Klassert struct xfrm4_protocol __rcu *next; 14613328715eSSteffen Klassert int priority; 14623328715eSSteffen Klassert }; 14633328715eSSteffen Klassert 14647e14ea15SSteffen Klassert struct xfrm6_protocol { 14657e14ea15SSteffen Klassert int (*handler)(struct sk_buff *skb); 14667e14ea15SSteffen Klassert int (*cb_handler)(struct sk_buff *skb, int err); 14677e14ea15SSteffen Klassert int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, 14687e14ea15SSteffen Klassert u8 type, u8 code, int offset, __be32 info); 14697e14ea15SSteffen Klassert 14707e14ea15SSteffen Klassert struct xfrm6_protocol __rcu *next; 14717e14ea15SSteffen Klassert int priority; 14727e14ea15SSteffen Klassert }; 14737e14ea15SSteffen Klassert 14741da177e4SLinus Torvalds /* XFRM tunnel handlers. */ 14751da177e4SLinus Torvalds struct xfrm_tunnel { 14761da177e4SLinus Torvalds int (*handler)(struct sk_buff *skb); 1477a6337463Sjamal int (*err_handler)(struct sk_buff *skb, u32 info); 1478d2acc347SHerbert Xu 1479b33eab08SEric Dumazet struct xfrm_tunnel __rcu *next; 1480d2acc347SHerbert Xu int priority; 14811da177e4SLinus Torvalds }; 14821da177e4SLinus Torvalds 14831da177e4SLinus Torvalds struct xfrm6_tunnel { 1484d2acc347SHerbert Xu int (*handler)(struct sk_buff *skb); 1485d2acc347SHerbert Xu int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, 1486d5fdd6baSBrian Haley u8 type, u8 code, int offset, __be32 info); 14876f0bcf15SEric Dumazet struct xfrm6_tunnel __rcu *next; 1488d2acc347SHerbert Xu int priority; 14891da177e4SLinus Torvalds }; 14901da177e4SLinus Torvalds 1491d511337aSJoe Perches void xfrm_init(void); 1492d511337aSJoe Perches void xfrm4_init(void); 1493d511337aSJoe Perches int xfrm_state_init(struct net *net); 1494d511337aSJoe Perches void xfrm_state_fini(struct net *net); 1495d511337aSJoe Perches void xfrm4_state_init(void); 14962f32b51bSSteffen Klassert void xfrm4_protocol_init(void); 1497c35b7e72SDaniel Lezcano #ifdef CONFIG_XFRM 1498d511337aSJoe Perches int xfrm6_init(void); 1499d511337aSJoe Perches void xfrm6_fini(void); 1500d511337aSJoe Perches int xfrm6_state_init(void); 1501d511337aSJoe Perches void xfrm6_state_fini(void); 15027e14ea15SSteffen Klassert int xfrm6_protocol_init(void); 15037e14ea15SSteffen Klassert void xfrm6_protocol_fini(void); 1504c35b7e72SDaniel Lezcano #else 1505c35b7e72SDaniel Lezcano static inline int xfrm6_init(void) 1506c35b7e72SDaniel Lezcano { 1507c35b7e72SDaniel Lezcano return 0; 1508c35b7e72SDaniel Lezcano } 1509c35b7e72SDaniel Lezcano static inline void xfrm6_fini(void) 1510c35b7e72SDaniel Lezcano { 1511c35b7e72SDaniel Lezcano ; 1512c35b7e72SDaniel Lezcano } 1513c35b7e72SDaniel Lezcano #endif 15141da177e4SLinus Torvalds 1515558f82efSMasahide NAKAMURA #ifdef CONFIG_XFRM_STATISTICS 1516d511337aSJoe Perches int xfrm_proc_init(struct net *net); 1517d511337aSJoe Perches void xfrm_proc_fini(struct net *net); 1518558f82efSMasahide NAKAMURA #endif 1519558f82efSMasahide NAKAMURA 1520d511337aSJoe Perches int xfrm_sysctl_init(struct net *net); 1521b27aeadbSAlexey Dobriyan #ifdef CONFIG_SYSCTL 1522d511337aSJoe Perches void xfrm_sysctl_fini(struct net *net); 1523b27aeadbSAlexey Dobriyan #else 1524b27aeadbSAlexey Dobriyan static inline void xfrm_sysctl_fini(struct net *net) 1525b27aeadbSAlexey Dobriyan { 1526b27aeadbSAlexey Dobriyan } 1527b27aeadbSAlexey Dobriyan #endif 1528b27aeadbSAlexey Dobriyan 1529d3623099SNicolas Dichtel void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto, 1530870a2df4SNicolas Dichtel struct xfrm_address_filter *filter); 1531d511337aSJoe Perches int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk, 15324c563f76STimo Teras int (*func)(struct xfrm_state *, int, void*), void *); 1533283bc9f3SFan Du void xfrm_state_walk_done(struct xfrm_state_walk *walk, struct net *net); 1534d511337aSJoe Perches struct xfrm_state *xfrm_state_alloc(struct net *net); 15354a135e53SMathias Krause void xfrm_state_free(struct xfrm_state *x); 1536d511337aSJoe Perches struct xfrm_state *xfrm_state_find(const xfrm_address_t *daddr, 153733765d06SDavid S. Miller const xfrm_address_t *saddr, 1538b520e9f6SDavid S. Miller const struct flowi *fl, 1539b520e9f6SDavid S. Miller struct xfrm_tmpl *tmpl, 15401da177e4SLinus Torvalds struct xfrm_policy *pol, int *err, 1541bc56b334SBenedict Wong unsigned short family, u32 if_id); 15427e652640SSteffen Klassert struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark, u32 if_id, 15435447c5e4SAlexey Dobriyan xfrm_address_t *daddr, 1544628529b6SJamal Hadi Salim xfrm_address_t *saddr, 1545628529b6SJamal Hadi Salim unsigned short family, 1546628529b6SJamal Hadi Salim u8 mode, u8 proto, u32 reqid); 1547c454997eSFan Du struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi, 1548c454997eSFan Du unsigned short family); 1549d511337aSJoe Perches int xfrm_state_check_expire(struct xfrm_state *x); 1550d511337aSJoe Perches void xfrm_state_insert(struct xfrm_state *x); 1551d511337aSJoe Perches int xfrm_state_add(struct xfrm_state *x); 1552d511337aSJoe Perches int xfrm_state_update(struct xfrm_state *x); 1553d511337aSJoe Perches struct xfrm_state *xfrm_state_lookup(struct net *net, u32 mark, 1554a70486f0SDavid S. Miller const xfrm_address_t *daddr, __be32 spi, 1555bd55775cSJamal Hadi Salim u8 proto, unsigned short family); 1556d511337aSJoe Perches struct xfrm_state *xfrm_state_lookup_byaddr(struct net *net, u32 mark, 1557a70486f0SDavid S. Miller const xfrm_address_t *daddr, 1558a70486f0SDavid S. Miller const xfrm_address_t *saddr, 1559bd55775cSJamal Hadi Salim u8 proto, 1560bd55775cSJamal Hadi Salim unsigned short family); 156141a49cc3SMasahide NAKAMURA #ifdef CONFIG_XFRM_SUB_POLICY 1562d511337aSJoe Perches int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n, 1563283bc9f3SFan Du unsigned short family, struct net *net); 1564d511337aSJoe Perches int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n, 1565d511337aSJoe Perches unsigned short family); 156641a49cc3SMasahide NAKAMURA #else 156741a49cc3SMasahide NAKAMURA static inline int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, 1568283bc9f3SFan Du int n, unsigned short family, struct net *net) 156941a49cc3SMasahide NAKAMURA { 157041a49cc3SMasahide NAKAMURA return -ENOSYS; 157141a49cc3SMasahide NAKAMURA } 157241a49cc3SMasahide NAKAMURA 157341a49cc3SMasahide NAKAMURA static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, 157441a49cc3SMasahide NAKAMURA int n, unsigned short family) 157541a49cc3SMasahide NAKAMURA { 157641a49cc3SMasahide NAKAMURA return -ENOSYS; 157741a49cc3SMasahide NAKAMURA } 157841a49cc3SMasahide NAKAMURA #endif 1579af11e316SJamal Hadi Salim 1580af11e316SJamal Hadi Salim struct xfrmk_sadinfo { 1581af11e316SJamal Hadi Salim u32 sadhcnt; /* current hash bkts */ 1582af11e316SJamal Hadi Salim u32 sadhmcnt; /* max allowed hash bkts */ 1583af11e316SJamal Hadi Salim u32 sadcnt; /* current running count */ 1584af11e316SJamal Hadi Salim }; 1585af11e316SJamal Hadi Salim 15865a6d3416SJamal Hadi Salim struct xfrmk_spdinfo { 15875a6d3416SJamal Hadi Salim u32 incnt; 15885a6d3416SJamal Hadi Salim u32 outcnt; 15895a6d3416SJamal Hadi Salim u32 fwdcnt; 15905a6d3416SJamal Hadi Salim u32 inscnt; 15915a6d3416SJamal Hadi Salim u32 outscnt; 15925a6d3416SJamal Hadi Salim u32 fwdscnt; 15935a6d3416SJamal Hadi Salim u32 spdhcnt; 15945a6d3416SJamal Hadi Salim u32 spdhmcnt; 15955a6d3416SJamal Hadi Salim }; 15965a6d3416SJamal Hadi Salim 1597d511337aSJoe Perches struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq); 1598d511337aSJoe Perches int xfrm_state_delete(struct xfrm_state *x); 1599f75a2804SCong Wang int xfrm_state_flush(struct net *net, u8 proto, bool task_valid, bool sync); 1600d77e38e6SSteffen Klassert int xfrm_dev_state_flush(struct net *net, struct net_device *dev, bool task_valid); 1601d511337aSJoe Perches void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si); 1602d511337aSJoe Perches void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si); 1603d511337aSJoe Perches u32 xfrm_replay_seqhi(struct xfrm_state *x, __be32 net_seq); 1604d511337aSJoe Perches int xfrm_init_replay(struct xfrm_state *x); 1605d511337aSJoe Perches int xfrm_state_mtu(struct xfrm_state *x, int mtu); 1606ffdb5211SIlan Tayari int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload); 1607d511337aSJoe Perches int xfrm_init_state(struct xfrm_state *x); 1608d511337aSJoe Perches int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb); 1609d511337aSJoe Perches int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type); 1610d511337aSJoe Perches int xfrm_input_resume(struct sk_buff *skb, int nexthdr); 1611acf568eeSHerbert Xu int xfrm_trans_queue(struct sk_buff *skb, 1612acf568eeSHerbert Xu int (*finish)(struct net *, struct sock *, 1613acf568eeSHerbert Xu struct sk_buff *)); 1614d511337aSJoe Perches int xfrm_output_resume(struct sk_buff *skb, int err); 16157026b1ddSDavid Miller int xfrm_output(struct sock *sk, struct sk_buff *skb); 1616d511337aSJoe Perches int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb); 1617d511337aSJoe Perches void xfrm_local_error(struct sk_buff *skb, int mtu); 1618d511337aSJoe Perches int xfrm4_extract_header(struct sk_buff *skb); 1619d511337aSJoe Perches int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb); 1620d511337aSJoe Perches int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi, 1621716062fdSHerbert Xu int encap_type); 1622d511337aSJoe Perches int xfrm4_transport_finish(struct sk_buff *skb, int async); 1623d511337aSJoe Perches int xfrm4_rcv(struct sk_buff *skb); 16241e295370SSteffen Klassert int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq); 1625c4541b41SHerbert Xu 1626c4541b41SHerbert Xu static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi) 1627c4541b41SHerbert Xu { 162870be6c91SSteffen Klassert XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4 = NULL; 16293328715eSSteffen Klassert XFRM_SPI_SKB_CB(skb)->family = AF_INET; 16303328715eSSteffen Klassert XFRM_SPI_SKB_CB(skb)->daddroff = offsetof(struct iphdr, daddr); 16313328715eSSteffen Klassert return xfrm_input(skb, nexthdr, spi, 0); 1632c4541b41SHerbert Xu } 1633c4541b41SHerbert Xu 1634d511337aSJoe Perches int xfrm4_extract_output(struct xfrm_state *x, struct sk_buff *skb); 1635d511337aSJoe Perches int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb); 1636ede2059dSEric W. Biederman int xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb); 16377026b1ddSDavid Miller int xfrm4_output_finish(struct sock *sk, struct sk_buff *skb); 16383328715eSSteffen Klassert int xfrm4_rcv_cb(struct sk_buff *skb, u8 protocol, int err); 16393328715eSSteffen Klassert int xfrm4_protocol_register(struct xfrm4_protocol *handler, unsigned char protocol); 16403328715eSSteffen Klassert int xfrm4_protocol_deregister(struct xfrm4_protocol *handler, unsigned char protocol); 1641d511337aSJoe Perches int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family); 1642d511337aSJoe Perches int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family); 1643d511337aSJoe Perches void xfrm4_local_error(struct sk_buff *skb, u32 mtu); 1644d511337aSJoe Perches int xfrm6_extract_header(struct sk_buff *skb); 1645d511337aSJoe Perches int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb); 164663c43787SNicolas Dichtel int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi, 164763c43787SNicolas Dichtel struct ip6_tnl *t); 1648d511337aSJoe Perches int xfrm6_transport_finish(struct sk_buff *skb, int async); 164963c43787SNicolas Dichtel int xfrm6_rcv_tnl(struct sk_buff *skb, struct ip6_tnl *t); 1650d511337aSJoe Perches int xfrm6_rcv(struct sk_buff *skb); 1651d511337aSJoe Perches int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr, 1652fbd9a5b4SMasahide NAKAMURA xfrm_address_t *saddr, u8 proto); 16537b77d161SDavid S. Miller void xfrm6_local_error(struct sk_buff *skb, u32 mtu); 16547e14ea15SSteffen Klassert int xfrm6_rcv_cb(struct sk_buff *skb, u8 protocol, int err); 16557e14ea15SSteffen Klassert int xfrm6_protocol_register(struct xfrm6_protocol *handler, unsigned char protocol); 16567e14ea15SSteffen Klassert int xfrm6_protocol_deregister(struct xfrm6_protocol *handler, unsigned char protocol); 1657d511337aSJoe Perches int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family); 16587b77d161SDavid S. Miller int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family); 1659d511337aSJoe Perches __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr); 1660d511337aSJoe Perches __be32 xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr); 1661d511337aSJoe Perches int xfrm6_extract_output(struct xfrm_state *x, struct sk_buff *skb); 1662d511337aSJoe Perches int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb); 1663ede2059dSEric W. Biederman int xfrm6_output(struct net *net, struct sock *sk, struct sk_buff *skb); 16647026b1ddSDavid Miller int xfrm6_output_finish(struct sock *sk, struct sk_buff *skb); 1665d511337aSJoe Perches int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb, 1666aee5adb4SMasahide NAKAMURA u8 **prevhdr); 16671da177e4SLinus Torvalds 16681da177e4SLinus Torvalds #ifdef CONFIG_XFRM 1669d511337aSJoe Perches int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb); 1670d511337aSJoe Perches int xfrm_user_policy(struct sock *sk, int optname, 1671d511337aSJoe Perches u8 __user *optval, int optlen); 16721da177e4SLinus Torvalds #else 16731da177e4SLinus Torvalds static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen) 16741da177e4SLinus Torvalds { 16751da177e4SLinus Torvalds return -ENOPROTOOPT; 16761da177e4SLinus Torvalds } 16771da177e4SLinus Torvalds 1678067b207bSJames Chapman static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb) 16791da177e4SLinus Torvalds { 16801da177e4SLinus Torvalds /* should not happen */ 16811da177e4SLinus Torvalds kfree_skb(skb); 16821da177e4SLinus Torvalds return 0; 16831da177e4SLinus Torvalds } 16841da177e4SLinus Torvalds #endif 16851da177e4SLinus Torvalds 1686d77e38e6SSteffen Klassert struct dst_entry *__xfrm_dst_lookup(struct net *net, int tos, int oif, 1687d77e38e6SSteffen Klassert const xfrm_address_t *saddr, 1688d77e38e6SSteffen Klassert const xfrm_address_t *daddr, 1689077fbac4SLorenzo Colitti int family, u32 mark); 1690d77e38e6SSteffen Klassert 16910331b1f3SAlexey Dobriyan struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp); 16924c563f76STimo Teras 1693d511337aSJoe Perches void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type); 1694d511337aSJoe Perches int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk, 1695d511337aSJoe Perches int (*func)(struct xfrm_policy *, int, int, void*), 1696d511337aSJoe Perches void *); 1697283bc9f3SFan Du void xfrm_policy_walk_done(struct xfrm_policy_walk *walk, struct net *net); 16981da177e4SLinus Torvalds int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl); 16997e652640SSteffen Klassert struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark, u32 if_id, 17008ca2e93bSJamal Hadi Salim u8 type, int dir, 17014e81bb83SMasahide NAKAMURA struct xfrm_selector *sel, 1702ef41aaa0SEric Paris struct xfrm_sec_ctx *ctx, int delete, 1703ef41aaa0SEric Paris int *err); 17047e652640SSteffen Klassert struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u32 if_id, u8, 17057e652640SSteffen Klassert int dir, u32 id, int delete, int *err); 17062e71029eSTetsuo Handa int xfrm_policy_flush(struct net *net, u8 type, bool task_valid); 1707880a6fabSChristophe Gouault void xfrm_policy_hash_rebuild(struct net *net); 17081da177e4SLinus Torvalds u32 xfrm_get_acqseq(void); 1709776e9dd9SFan Du int verify_spi_info(u8 proto, u32 min, u32 max); 1710d511337aSJoe Perches int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi); 1711e473fcb4SMathias Krause struct xfrm_state *xfrm_find_acq(struct net *net, const struct xfrm_mark *mark, 17127e652640SSteffen Klassert u8 mode, u32 reqid, u32 if_id, u8 proto, 1713a70486f0SDavid S. Miller const xfrm_address_t *daddr, 1714a70486f0SDavid S. Miller const xfrm_address_t *saddr, int create, 1715bd55775cSJamal Hadi Salim unsigned short family); 1716d511337aSJoe Perches int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol); 17171da177e4SLinus Torvalds 171880c9abaaSShinta Sugimoto #ifdef CONFIG_XFRM_MIGRATE 1719d511337aSJoe Perches int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, 1720183cad12SDavid S. Miller const struct xfrm_migrate *m, int num_bundles, 17218bafd730SAntony Antony const struct xfrm_kmaddress *k, 17228bafd730SAntony Antony const struct xfrm_encap_tmpl *encap); 1723283bc9f3SFan Du struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net); 1724d511337aSJoe Perches struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, 17254ab47d47SAntony Antony struct xfrm_migrate *m, 17264ab47d47SAntony Antony struct xfrm_encap_tmpl *encap); 1727d511337aSJoe Perches int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, 172813c1d189SArnaud Ebalard struct xfrm_migrate *m, int num_bundles, 17294ab47d47SAntony Antony struct xfrm_kmaddress *k, struct net *net, 17304ab47d47SAntony Antony struct xfrm_encap_tmpl *encap); 173180c9abaaSShinta Sugimoto #endif 173280c9abaaSShinta Sugimoto 1733d511337aSJoe Perches int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport); 1734d511337aSJoe Perches void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 portid); 1735d511337aSJoe Perches int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, 1736d511337aSJoe Perches xfrm_address_t *addr); 17371da177e4SLinus Torvalds 1738d511337aSJoe Perches void xfrm_input_init(void); 1739d511337aSJoe Perches int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq); 17401da177e4SLinus Torvalds 1741d511337aSJoe Perches void xfrm_probe_algs(void); 1742d511337aSJoe Perches int xfrm_count_pfkey_auth_supported(void); 1743d511337aSJoe Perches int xfrm_count_pfkey_enc_supported(void); 1744d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx); 1745d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx); 1746d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id); 1747d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id); 1748d511337aSJoe Perches struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id); 1749d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byname(const char *name, int probe); 1750d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe); 1751d511337aSJoe Perches struct xfrm_algo_desc *xfrm_calg_get_byname(const char *name, int probe); 1752d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aead_get_byname(const char *name, int icv_len, 17531a6509d9SHerbert Xu int probe); 17541da177e4SLinus Torvalds 1755ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 static inline bool xfrm6_addr_equal(const xfrm_address_t *a, 1756ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 const xfrm_address_t *b) 1757ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 { 1758ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 return ipv6_addr_equal((const struct in6_addr *)a, 1759ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 (const struct in6_addr *)b); 1760ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 } 1761ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 176270e94e66SYOSHIFUJI Hideaki / 吉藤英明 static inline bool xfrm_addr_equal(const xfrm_address_t *a, 176370e94e66SYOSHIFUJI Hideaki / 吉藤英明 const xfrm_address_t *b, 176470e94e66SYOSHIFUJI Hideaki / 吉藤英明 sa_family_t family) 176570e94e66SYOSHIFUJI Hideaki / 吉藤英明 { 176670e94e66SYOSHIFUJI Hideaki / 吉藤英明 switch (family) { 176770e94e66SYOSHIFUJI Hideaki / 吉藤英明 default: 176870e94e66SYOSHIFUJI Hideaki / 吉藤英明 case AF_INET: 176970e94e66SYOSHIFUJI Hideaki / 吉藤英明 return ((__force u32)a->a4 ^ (__force u32)b->a4) == 0; 177070e94e66SYOSHIFUJI Hideaki / 吉藤英明 case AF_INET6: 177170e94e66SYOSHIFUJI Hideaki / 吉藤英明 return xfrm6_addr_equal(a, b); 177270e94e66SYOSHIFUJI Hideaki / 吉藤英明 } 177370e94e66SYOSHIFUJI Hideaki / 吉藤英明 } 177470e94e66SYOSHIFUJI Hideaki / 吉藤英明 177577d8d7a6SHerbert Xu static inline int xfrm_policy_id2dir(u32 index) 177677d8d7a6SHerbert Xu { 177777d8d7a6SHerbert Xu return index & 7; 177877d8d7a6SHerbert Xu } 177977d8d7a6SHerbert Xu 1780a6483b79SAlexey Dobriyan #ifdef CONFIG_XFRM 1781a6483b79SAlexey Dobriyan static inline int xfrm_aevent_is_on(struct net *net) 1782f8cd5488SJamal Hadi Salim { 1783be33690dSPatrick McHardy struct sock *nlsk; 1784be33690dSPatrick McHardy int ret = 0; 1785be33690dSPatrick McHardy 1786be33690dSPatrick McHardy rcu_read_lock(); 1787a6483b79SAlexey Dobriyan nlsk = rcu_dereference(net->xfrm.nlsk); 1788be33690dSPatrick McHardy if (nlsk) 1789be33690dSPatrick McHardy ret = netlink_has_listeners(nlsk, XFRMNLGRP_AEVENTS); 1790be33690dSPatrick McHardy rcu_read_unlock(); 1791be33690dSPatrick McHardy return ret; 1792f8cd5488SJamal Hadi Salim } 17930f24558eSHoria Geanta 17940f24558eSHoria Geanta static inline int xfrm_acquire_is_on(struct net *net) 17950f24558eSHoria Geanta { 17960f24558eSHoria Geanta struct sock *nlsk; 17970f24558eSHoria Geanta int ret = 0; 17980f24558eSHoria Geanta 17990f24558eSHoria Geanta rcu_read_lock(); 18000f24558eSHoria Geanta nlsk = rcu_dereference(net->xfrm.nlsk); 18010f24558eSHoria Geanta if (nlsk) 18020f24558eSHoria Geanta ret = netlink_has_listeners(nlsk, XFRMNLGRP_ACQUIRE); 18030f24558eSHoria Geanta rcu_read_unlock(); 18040f24558eSHoria Geanta 18050f24558eSHoria Geanta return ret; 18060f24558eSHoria Geanta } 1807a6483b79SAlexey Dobriyan #endif 1808f8cd5488SJamal Hadi Salim 1809373b8eebSAlexey Dobriyan static inline unsigned int aead_len(struct xfrm_algo_aead *alg) 1810ee5c2317SSteffen Klassert { 1811ee5c2317SSteffen Klassert return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 1812ee5c2317SSteffen Klassert } 1813ee5c2317SSteffen Klassert 181406cd22f8SAlexey Dobriyan static inline unsigned int xfrm_alg_len(const struct xfrm_algo *alg) 18150f99be0dSEric Dumazet { 18160f99be0dSEric Dumazet return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 18170f99be0dSEric Dumazet } 18180f99be0dSEric Dumazet 18191bd963a7SAlexey Dobriyan static inline unsigned int xfrm_alg_auth_len(const struct xfrm_algo_auth *alg) 18204447bb33SMartin Willi { 18214447bb33SMartin Willi return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 18224447bb33SMartin Willi } 18234447bb33SMartin Willi 18245e708e47SAlexey Dobriyan static inline unsigned int xfrm_replay_state_esn_len(struct xfrm_replay_state_esn *replay_esn) 18259736acf3SSteffen Klassert { 18269736acf3SSteffen Klassert return sizeof(*replay_esn) + replay_esn->bmp_len * sizeof(__u32); 18279736acf3SSteffen Klassert } 18289736acf3SSteffen Klassert 182980c9abaaSShinta Sugimoto #ifdef CONFIG_XFRM_MIGRATE 1830af2f464eSSteffen Klassert static inline int xfrm_replay_clone(struct xfrm_state *x, 1831af2f464eSSteffen Klassert struct xfrm_state *orig) 1832af2f464eSSteffen Klassert { 1833af2f464eSSteffen Klassert x->replay_esn = kzalloc(xfrm_replay_state_esn_len(orig->replay_esn), 1834af2f464eSSteffen Klassert GFP_KERNEL); 1835af2f464eSSteffen Klassert if (!x->replay_esn) 1836af2f464eSSteffen Klassert return -ENOMEM; 1837af2f464eSSteffen Klassert 1838af2f464eSSteffen Klassert x->replay_esn->bmp_len = orig->replay_esn->bmp_len; 1839af2f464eSSteffen Klassert x->replay_esn->replay_window = orig->replay_esn->replay_window; 1840af2f464eSSteffen Klassert 1841af2f464eSSteffen Klassert x->preplay_esn = kmemdup(x->replay_esn, 1842af2f464eSSteffen Klassert xfrm_replay_state_esn_len(x->replay_esn), 1843af2f464eSSteffen Klassert GFP_KERNEL); 1844af2f464eSSteffen Klassert if (!x->preplay_esn) { 1845af2f464eSSteffen Klassert kfree(x->replay_esn); 1846af2f464eSSteffen Klassert return -ENOMEM; 1847af2f464eSSteffen Klassert } 1848af2f464eSSteffen Klassert 1849af2f464eSSteffen Klassert return 0; 1850af2f464eSSteffen Klassert } 1851af2f464eSSteffen Klassert 1852ee5c2317SSteffen Klassert static inline struct xfrm_algo_aead *xfrm_algo_aead_clone(struct xfrm_algo_aead *orig) 1853ee5c2317SSteffen Klassert { 1854ee5c2317SSteffen Klassert return kmemdup(orig, aead_len(orig), GFP_KERNEL); 1855ee5c2317SSteffen Klassert } 1856ee5c2317SSteffen Klassert 1857ee5c2317SSteffen Klassert 185880c9abaaSShinta Sugimoto static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig) 185980c9abaaSShinta Sugimoto { 18600f99be0dSEric Dumazet return kmemdup(orig, xfrm_alg_len(orig), GFP_KERNEL); 186180c9abaaSShinta Sugimoto } 186280c9abaaSShinta Sugimoto 18634447bb33SMartin Willi static inline struct xfrm_algo_auth *xfrm_algo_auth_clone(struct xfrm_algo_auth *orig) 18644447bb33SMartin Willi { 18654447bb33SMartin Willi return kmemdup(orig, xfrm_alg_auth_len(orig), GFP_KERNEL); 18664447bb33SMartin Willi } 18674447bb33SMartin Willi 186880c9abaaSShinta Sugimoto static inline void xfrm_states_put(struct xfrm_state **states, int n) 186980c9abaaSShinta Sugimoto { 187080c9abaaSShinta Sugimoto int i; 187180c9abaaSShinta Sugimoto for (i = 0; i < n; i++) 187280c9abaaSShinta Sugimoto xfrm_state_put(*(states + i)); 187380c9abaaSShinta Sugimoto } 187480c9abaaSShinta Sugimoto 187580c9abaaSShinta Sugimoto static inline void xfrm_states_delete(struct xfrm_state **states, int n) 187680c9abaaSShinta Sugimoto { 187780c9abaaSShinta Sugimoto int i; 187880c9abaaSShinta Sugimoto for (i = 0; i < n; i++) 187980c9abaaSShinta Sugimoto xfrm_state_delete(*(states + i)); 188080c9abaaSShinta Sugimoto } 188180c9abaaSShinta Sugimoto #endif 1882f8cd5488SJamal Hadi Salim 1883def8b4faSAlexey Dobriyan #ifdef CONFIG_XFRM 188400501121SHerbert Xu static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb) 188500501121SHerbert Xu { 18862294be0fSFlorian Westphal struct sec_path *sp = skb_sec_path(skb); 18872294be0fSFlorian Westphal 18882294be0fSFlorian Westphal return sp->xvec[sp->len - 1]; 188900501121SHerbert Xu } 1890f53c7239SSteffen Klassert #endif 1891f53c7239SSteffen Klassert 189254ef207aSSteffen Klassert static inline struct xfrm_offload *xfrm_offload(struct sk_buff *skb) 189354ef207aSSteffen Klassert { 1894f53c7239SSteffen Klassert #ifdef CONFIG_XFRM 18952294be0fSFlorian Westphal struct sec_path *sp = skb_sec_path(skb); 189654ef207aSSteffen Klassert 189754ef207aSSteffen Klassert if (!sp || !sp->olen || sp->len != sp->olen) 189854ef207aSSteffen Klassert return NULL; 189954ef207aSSteffen Klassert 190054ef207aSSteffen Klassert return &sp->ovec[sp->olen - 1]; 1901f53c7239SSteffen Klassert #else 1902f53c7239SSteffen Klassert return NULL; 1903def8b4faSAlexey Dobriyan #endif 1904f53c7239SSteffen Klassert } 190500501121SHerbert Xu 1906e9a441b6SKirill Tkhai void __init xfrm_dev_init(void); 1907b81f884aSHangbin Liu 1908b81f884aSHangbin Liu #ifdef CONFIG_XFRM_OFFLOAD 1909f53c7239SSteffen Klassert void xfrm_dev_resume(struct sk_buff *skb); 1910f53c7239SSteffen Klassert void xfrm_dev_backlog(struct softnet_data *sd); 1911f53c7239SSteffen Klassert struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features, bool *again); 1912d77e38e6SSteffen Klassert int xfrm_dev_state_add(struct net *net, struct xfrm_state *x, 1913d77e38e6SSteffen Klassert struct xfrm_user_offload *xuo); 1914d77e38e6SSteffen Klassert bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x); 1915d77e38e6SSteffen Klassert 191650bd870aSYossef Efraim static inline void xfrm_dev_state_advance_esn(struct xfrm_state *x) 191750bd870aSYossef Efraim { 191850bd870aSYossef Efraim struct xfrm_state_offload *xso = &x->xso; 191950bd870aSYossef Efraim 192050bd870aSYossef Efraim if (xso->dev && xso->dev->xfrmdev_ops->xdo_dev_state_advance_esn) 192150bd870aSYossef Efraim xso->dev->xfrmdev_ops->xdo_dev_state_advance_esn(x); 192250bd870aSYossef Efraim } 192350bd870aSYossef Efraim 1924f70f250aSSteffen Klassert static inline bool xfrm_dst_offload_ok(struct dst_entry *dst) 1925f70f250aSSteffen Klassert { 1926f70f250aSSteffen Klassert struct xfrm_state *x = dst->xfrm; 1927b6ca8bd5SDavid Miller struct xfrm_dst *xdst; 1928f70f250aSSteffen Klassert 1929f70f250aSSteffen Klassert if (!x || !x->type_offload) 1930f70f250aSSteffen Klassert return false; 1931f70f250aSSteffen Klassert 1932b6ca8bd5SDavid Miller xdst = (struct xfrm_dst *) dst; 19332271d519SSteffen Klassert if (!x->xso.offload_handle && !xdst->child->xfrm) 19342271d519SSteffen Klassert return true; 19350f6c480fSDavid Miller if (x->xso.offload_handle && (x->xso.dev == xfrm_dst_path(dst)->dev) && 1936b6ca8bd5SDavid Miller !xdst->child->xfrm) 1937f70f250aSSteffen Klassert return true; 1938f70f250aSSteffen Klassert 1939f70f250aSSteffen Klassert return false; 1940f70f250aSSteffen Klassert } 1941f70f250aSSteffen Klassert 1942d77e38e6SSteffen Klassert static inline void xfrm_dev_state_delete(struct xfrm_state *x) 1943d77e38e6SSteffen Klassert { 1944d77e38e6SSteffen Klassert struct xfrm_state_offload *xso = &x->xso; 1945d77e38e6SSteffen Klassert 1946d77e38e6SSteffen Klassert if (xso->dev) 1947d77e38e6SSteffen Klassert xso->dev->xfrmdev_ops->xdo_dev_state_delete(x); 1948d77e38e6SSteffen Klassert } 1949d77e38e6SSteffen Klassert 1950d77e38e6SSteffen Klassert static inline void xfrm_dev_state_free(struct xfrm_state *x) 1951d77e38e6SSteffen Klassert { 1952d77e38e6SSteffen Klassert struct xfrm_state_offload *xso = &x->xso; 1953d77e38e6SSteffen Klassert struct net_device *dev = xso->dev; 1954d77e38e6SSteffen Klassert 1955d77e38e6SSteffen Klassert if (dev && dev->xfrmdev_ops) { 19567f05b467SShannon Nelson if (dev->xfrmdev_ops->xdo_dev_state_free) 1957d77e38e6SSteffen Klassert dev->xfrmdev_ops->xdo_dev_state_free(x); 1958d77e38e6SSteffen Klassert xso->dev = NULL; 1959d77e38e6SSteffen Klassert dev_put(dev); 1960d77e38e6SSteffen Klassert } 1961d77e38e6SSteffen Klassert } 1962d77e38e6SSteffen Klassert #else 1963f53c7239SSteffen Klassert static inline void xfrm_dev_resume(struct sk_buff *skb) 1964f53c7239SSteffen Klassert { 1965f53c7239SSteffen Klassert } 1966f53c7239SSteffen Klassert 1967f53c7239SSteffen Klassert static inline void xfrm_dev_backlog(struct softnet_data *sd) 1968f53c7239SSteffen Klassert { 1969f53c7239SSteffen Klassert } 1970f53c7239SSteffen Klassert 1971f53c7239SSteffen Klassert static inline struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features, bool *again) 1972f6e27114SSteffen Klassert { 19733dca3f38SSteffen Klassert return skb; 1974f6e27114SSteffen Klassert } 1975f6e27114SSteffen Klassert 1976d77e38e6SSteffen Klassert static inline int xfrm_dev_state_add(struct net *net, struct xfrm_state *x, struct xfrm_user_offload *xuo) 1977d77e38e6SSteffen Klassert { 1978d77e38e6SSteffen Klassert return 0; 1979d77e38e6SSteffen Klassert } 1980d77e38e6SSteffen Klassert 1981d77e38e6SSteffen Klassert static inline void xfrm_dev_state_delete(struct xfrm_state *x) 1982d77e38e6SSteffen Klassert { 1983d77e38e6SSteffen Klassert } 1984d77e38e6SSteffen Klassert 1985d77e38e6SSteffen Klassert static inline void xfrm_dev_state_free(struct xfrm_state *x) 1986d77e38e6SSteffen Klassert { 1987d77e38e6SSteffen Klassert } 1988d77e38e6SSteffen Klassert 1989d77e38e6SSteffen Klassert static inline bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x) 1990d77e38e6SSteffen Klassert { 1991d77e38e6SSteffen Klassert return false; 1992d77e38e6SSteffen Klassert } 1993f70f250aSSteffen Klassert 199450bd870aSYossef Efraim static inline void xfrm_dev_state_advance_esn(struct xfrm_state *x) 199550bd870aSYossef Efraim { 199650bd870aSYossef Efraim } 199750bd870aSYossef Efraim 1998f70f250aSSteffen Klassert static inline bool xfrm_dst_offload_ok(struct dst_entry *dst) 1999f70f250aSSteffen Klassert { 2000f70f250aSSteffen Klassert return false; 2001f70f250aSSteffen Klassert } 2002d77e38e6SSteffen Klassert #endif 2003d77e38e6SSteffen Klassert 2004bf825f81SJamal Hadi Salim static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m) 2005bf825f81SJamal Hadi Salim { 2006bf825f81SJamal Hadi Salim if (attrs[XFRMA_MARK]) 20074efd7e83SAndreas Steffen memcpy(m, nla_data(attrs[XFRMA_MARK]), sizeof(struct xfrm_mark)); 2008bf825f81SJamal Hadi Salim else 2009bf825f81SJamal Hadi Salim m->v = m->m = 0; 2010bf825f81SJamal Hadi Salim 2011bf825f81SJamal Hadi Salim return m->v & m->m; 2012bf825f81SJamal Hadi Salim } 2013bf825f81SJamal Hadi Salim 2014e3dfa389SDavid S. Miller static inline int xfrm_mark_put(struct sk_buff *skb, const struct xfrm_mark *m) 2015bf825f81SJamal Hadi Salim { 20161d1e34ddSDavid S. Miller int ret = 0; 2017bf825f81SJamal Hadi Salim 20181d1e34ddSDavid S. Miller if (m->m | m->v) 20191d1e34ddSDavid S. Miller ret = nla_put(skb, XFRMA_MARK, sizeof(struct xfrm_mark), m); 20201d1e34ddSDavid S. Miller return ret; 2021bf825f81SJamal Hadi Salim } 2022bf825f81SJamal Hadi Salim 20239b42c1f1SSteffen Klassert static inline __u32 xfrm_smark_get(__u32 mark, struct xfrm_state *x) 20249b42c1f1SSteffen Klassert { 20259b42c1f1SSteffen Klassert struct xfrm_mark *m = &x->props.smark; 20269b42c1f1SSteffen Klassert 20279b42c1f1SSteffen Klassert return (m->v & m->m) | (mark & ~m->m); 20289b42c1f1SSteffen Klassert } 20299b42c1f1SSteffen Klassert 20307e652640SSteffen Klassert static inline int xfrm_if_id_put(struct sk_buff *skb, __u32 if_id) 20317e652640SSteffen Klassert { 20327e652640SSteffen Klassert int ret = 0; 20337e652640SSteffen Klassert 20347e652640SSteffen Klassert if (if_id) 20357e652640SSteffen Klassert ret = nla_put_u32(skb, XFRMA_IF_ID, if_id); 20367e652640SSteffen Klassert return ret; 20377e652640SSteffen Klassert } 20387e652640SSteffen Klassert 203970be6c91SSteffen Klassert static inline int xfrm_tunnel_check(struct sk_buff *skb, struct xfrm_state *x, 204070be6c91SSteffen Klassert unsigned int family) 204170be6c91SSteffen Klassert { 204270be6c91SSteffen Klassert bool tunnel = false; 204370be6c91SSteffen Klassert 204470be6c91SSteffen Klassert switch(family) { 204570be6c91SSteffen Klassert case AF_INET: 204670be6c91SSteffen Klassert if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4) 204770be6c91SSteffen Klassert tunnel = true; 204870be6c91SSteffen Klassert break; 204970be6c91SSteffen Klassert case AF_INET6: 205070be6c91SSteffen Klassert if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6) 205170be6c91SSteffen Klassert tunnel = true; 205270be6c91SSteffen Klassert break; 205370be6c91SSteffen Klassert } 205470be6c91SSteffen Klassert if (tunnel && !(x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL)) 205570be6c91SSteffen Klassert return -EINVAL; 205670be6c91SSteffen Klassert 205770be6c91SSteffen Klassert return 0; 205870be6c91SSteffen Klassert } 20591da177e4SLinus Torvalds #endif /* _NET_XFRM_H */ 2060