1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 21da177e4SLinus Torvalds #ifndef _NET_XFRM_H 31da177e4SLinus Torvalds #define _NET_XFRM_H 41da177e4SLinus Torvalds 5aabc9761SHerbert Xu #include <linux/compiler.h> 61da177e4SLinus Torvalds #include <linux/xfrm.h> 71da177e4SLinus Torvalds #include <linux/spinlock.h> 81da177e4SLinus Torvalds #include <linux/list.h> 91da177e4SLinus Torvalds #include <linux/skbuff.h> 1014c85021SArnaldo Carvalho de Melo #include <linux/socket.h> 111da177e4SLinus Torvalds #include <linux/pfkeyv2.h> 125794708fSMasahide NAKAMURA #include <linux/ipsec.h> 131da177e4SLinus Torvalds #include <linux/in6.h> 144a3e2f71SArjan van de Ven #include <linux/mutex.h> 15ab5f5e8bSJoy Latten #include <linux/audit.h> 165a0e3ad6STejun Heo #include <linux/slab.h> 1788755e9cSReshetova, Elena #include <linux/refcount.h> 181da177e4SLinus Torvalds 191da177e4SLinus Torvalds #include <net/sock.h> 201da177e4SLinus Torvalds #include <net/dst.h> 21436a0a40SHerbert Xu #include <net/ip.h> 221da177e4SLinus Torvalds #include <net/route.h> 231da177e4SLinus Torvalds #include <net/ipv6.h> 241da177e4SLinus Torvalds #include <net/ip6_fib.h> 25fe1a5f03STimo Teräs #include <net/flow.h> 26f203b76dSSteffen Klassert #include <net/gro_cells.h> 279e0d57fdSYury Polyanskiy 289e0d57fdSYury Polyanskiy #include <linux/interrupt.h> 299e0d57fdSYury Polyanskiy 30558f82efSMasahide NAKAMURA #ifdef CONFIG_XFRM_STATISTICS 31558f82efSMasahide NAKAMURA #include <net/snmp.h> 32558f82efSMasahide NAKAMURA #endif 331da177e4SLinus Torvalds 34d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_ESP 50 35d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_AH 51 36d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_COMP 108 37d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_IPIP 4 38d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_IPV6 41 39d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_ROUTING IPPROTO_ROUTING 40d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_DSTOPTS IPPROTO_DSTOPTS 41d3d6dd3aSMasahide NAKAMURA 42fa9921e4SNicolas Dichtel #define XFRM_ALIGN4(len) (((len) + 3) & ~3) 431da177e4SLinus Torvalds #define XFRM_ALIGN8(len) (((len) + 7) & ~7) 44b59f45d0SHerbert Xu #define MODULE_ALIAS_XFRM_MODE(family, encap) \ 45b59f45d0SHerbert Xu MODULE_ALIAS("xfrm-mode-" __stringify(family) "-" __stringify(encap)) 46d3d6dd3aSMasahide NAKAMURA #define MODULE_ALIAS_XFRM_TYPE(family, proto) \ 47d3d6dd3aSMasahide NAKAMURA MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto)) 48ffdb5211SIlan Tayari #define MODULE_ALIAS_XFRM_OFFLOAD_TYPE(family, proto) \ 49ffdb5211SIlan Tayari MODULE_ALIAS("xfrm-offload-" __stringify(family) "-" __stringify(proto)) 501da177e4SLinus Torvalds 51558f82efSMasahide NAKAMURA #ifdef CONFIG_XFRM_STATISTICS 5259c9940eSAlexey Dobriyan #define XFRM_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.xfrm_statistics, field) 53558f82efSMasahide NAKAMURA #else 5459c9940eSAlexey Dobriyan #define XFRM_INC_STATS(net, field) ((void)(net)) 55558f82efSMasahide NAKAMURA #endif 56558f82efSMasahide NAKAMURA 571da177e4SLinus Torvalds 581da177e4SLinus Torvalds /* Organization of SPD aka "XFRM rules" 591da177e4SLinus Torvalds ------------------------------------ 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds Basic objects: 621da177e4SLinus Torvalds - policy rule, struct xfrm_policy (=SPD entry) 631da177e4SLinus Torvalds - bundle of transformations, struct dst_entry == struct xfrm_dst (=SA bundle) 641da177e4SLinus Torvalds - instance of a transformer, struct xfrm_state (=SA) 651da177e4SLinus Torvalds - template to clone xfrm_state, struct xfrm_tmpl 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds SPD is plain linear list of xfrm_policy rules, ordered by priority. 681da177e4SLinus Torvalds (To be compatible with existing pfkeyv2 implementations, 691da177e4SLinus Torvalds many rules with priority of 0x7fffffff are allowed to exist and 701da177e4SLinus Torvalds such rules are ordered in an unpredictable way, thanks to bsd folks.) 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds Lookup is plain linear search until the first match with selector. 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds If "action" is "block", then we prohibit the flow, otherwise: 751da177e4SLinus Torvalds if "xfrms_nr" is zero, the flow passes untransformed. Otherwise, 761da177e4SLinus Torvalds policy entry has list of up to XFRM_MAX_DEPTH transformations, 771da177e4SLinus Torvalds described by templates xfrm_tmpl. Each template is resolved 781da177e4SLinus Torvalds to a complete xfrm_state (see below) and we pack bundle of transformations 791da177e4SLinus Torvalds to a dst_entry returned to requestor. 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds dst -. xfrm .-> xfrm_state #1 821da177e4SLinus Torvalds |---. child .-> dst -. xfrm .-> xfrm_state #2 831da177e4SLinus Torvalds |---. child .-> dst -. xfrm .-> xfrm_state #3 841da177e4SLinus Torvalds |---. child .-> NULL 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds Bundles are cached at xrfm_policy struct (field ->bundles). 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds Resolution of xrfm_tmpl 901da177e4SLinus Torvalds ----------------------- 911da177e4SLinus Torvalds Template contains: 921da177e4SLinus Torvalds 1. ->mode Mode: transport or tunnel 931da177e4SLinus Torvalds 2. ->id.proto Protocol: AH/ESP/IPCOMP 941da177e4SLinus Torvalds 3. ->id.daddr Remote tunnel endpoint, ignored for transport mode. 951da177e4SLinus Torvalds Q: allow to resolve security gateway? 961da177e4SLinus Torvalds 4. ->id.spi If not zero, static SPI. 971da177e4SLinus Torvalds 5. ->saddr Local tunnel endpoint, ignored for transport mode. 981da177e4SLinus Torvalds 6. ->algos List of allowed algos. Plain bitmask now. 991da177e4SLinus Torvalds Q: ealgos, aalgos, calgos. What a mess... 1001da177e4SLinus Torvalds 7. ->share Sharing mode. 1011da177e4SLinus Torvalds Q: how to implement private sharing mode? To add struct sock* to 1021da177e4SLinus Torvalds flow id? 1031da177e4SLinus Torvalds 1041da177e4SLinus Torvalds Having this template we search through SAD searching for entries 1051da177e4SLinus Torvalds with appropriate mode/proto/algo, permitted by selector. 1061da177e4SLinus Torvalds If no appropriate entry found, it is requested from key manager. 1071da177e4SLinus Torvalds 1081da177e4SLinus Torvalds PROBLEMS: 1091da177e4SLinus Torvalds Q: How to find all the bundles referring to a physical path for 1101da177e4SLinus Torvalds PMTU discovery? Seems, dst should contain list of all parents... 1111da177e4SLinus Torvalds and enter to infinite locking hierarchy disaster. 1121da177e4SLinus Torvalds No! It is easier, we will not search for them, let them find us. 1131da177e4SLinus Torvalds We add genid to each dst plus pointer to genid of raw IP route, 1141da177e4SLinus Torvalds pmtu disc will update pmtu on raw IP route and increase its genid. 1151da177e4SLinus Torvalds dst_check() will see this for top level and trigger resyncing 1161da177e4SLinus Torvalds metrics. Plus, it will be made via sk->sk_dst_cache. Solved. 1171da177e4SLinus Torvalds */ 1181da177e4SLinus Torvalds 11912a169e7SHerbert Xu struct xfrm_state_walk { 12012a169e7SHerbert Xu struct list_head all; 12112a169e7SHerbert Xu u8 state; 12212a169e7SHerbert Xu u8 dying; 12312a169e7SHerbert Xu u8 proto; 12412a169e7SHerbert Xu u32 seq; 125870a2df4SNicolas Dichtel struct xfrm_address_filter *filter; 12612a169e7SHerbert Xu }; 12712a169e7SHerbert Xu 128d77e38e6SSteffen Klassert struct xfrm_state_offload { 129d77e38e6SSteffen Klassert struct net_device *dev; 130d77e38e6SSteffen Klassert unsigned long offload_handle; 131d77e38e6SSteffen Klassert unsigned int num_exthdrs; 132d77e38e6SSteffen Klassert u8 flags; 133d77e38e6SSteffen Klassert }; 134d77e38e6SSteffen Klassert 1351da177e4SLinus Torvalds /* Full description of state of transformer. */ 136fd2c3ef7SEric Dumazet struct xfrm_state { 1370c5c9fb5SEric W. Biederman possible_net_t xs_net; 138abb81c4fSHerbert Xu union { 13912a169e7SHerbert Xu struct hlist_node gclist; 1408f126e37SDavid S. Miller struct hlist_node bydst; 141abb81c4fSHerbert Xu }; 1428f126e37SDavid S. Miller struct hlist_node bysrc; 1438f126e37SDavid S. Miller struct hlist_node byspi; 1441da177e4SLinus Torvalds 14588755e9cSReshetova, Elena refcount_t refcnt; 1461da177e4SLinus Torvalds spinlock_t lock; 1471da177e4SLinus Torvalds 1481da177e4SLinus Torvalds struct xfrm_id id; 1491da177e4SLinus Torvalds struct xfrm_selector sel; 150bf825f81SJamal Hadi Salim struct xfrm_mark mark; 1517e652640SSteffen Klassert u32 if_id; 15235d2856bSMartin Willi u32 tfcpad; 1531da177e4SLinus Torvalds 1549d4a706dSDavid S. Miller u32 genid; 1559d4a706dSDavid S. Miller 15612a169e7SHerbert Xu /* Key manager bits */ 15712a169e7SHerbert Xu struct xfrm_state_walk km; 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds /* Parameters of this state. */ 1601da177e4SLinus Torvalds struct { 1611da177e4SLinus Torvalds u32 reqid; 1621da177e4SLinus Torvalds u8 mode; 1631da177e4SLinus Torvalds u8 replay_window; 1641da177e4SLinus Torvalds u8 aalgo, ealgo, calgo; 1651da177e4SLinus Torvalds u8 flags; 1661da177e4SLinus Torvalds u16 family; 1671da177e4SLinus Torvalds xfrm_address_t saddr; 1681da177e4SLinus Torvalds int header_len; 1691da177e4SLinus Torvalds int trailer_len; 170a947b0a9SNicolas Dichtel u32 extra_flags; 1719b42c1f1SSteffen Klassert struct xfrm_mark smark; 1721da177e4SLinus Torvalds } props; 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds struct xfrm_lifetime_cfg lft; 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds /* Data for transformer */ 1774447bb33SMartin Willi struct xfrm_algo_auth *aalg; 1781da177e4SLinus Torvalds struct xfrm_algo *ealg; 1791da177e4SLinus Torvalds struct xfrm_algo *calg; 1801a6509d9SHerbert Xu struct xfrm_algo_aead *aead; 18169b0137fSHerbert Xu const char *geniv; 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds /* Data for encapsulator */ 1841da177e4SLinus Torvalds struct xfrm_encap_tmpl *encap; 1851da177e4SLinus Torvalds 186060f02a3SNoriaki TAKAMIYA /* Data for care-of address */ 187060f02a3SNoriaki TAKAMIYA xfrm_address_t *coaddr; 188060f02a3SNoriaki TAKAMIYA 1891da177e4SLinus Torvalds /* IPComp needs an IPIP tunnel for handling uncompressed packets */ 1901da177e4SLinus Torvalds struct xfrm_state *tunnel; 1911da177e4SLinus Torvalds 1921da177e4SLinus Torvalds /* If a tunnel, number of users + 1 */ 1931da177e4SLinus Torvalds atomic_t tunnel_users; 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds /* State for replay detection */ 1961da177e4SLinus Torvalds struct xfrm_replay_state replay; 1979736acf3SSteffen Klassert struct xfrm_replay_state_esn *replay_esn; 1981da177e4SLinus Torvalds 199f8cd5488SJamal Hadi Salim /* Replay detection state at the time we sent the last notification */ 200f8cd5488SJamal Hadi Salim struct xfrm_replay_state preplay; 2019736acf3SSteffen Klassert struct xfrm_replay_state_esn *preplay_esn; 202f8cd5488SJamal Hadi Salim 2039fdc4883SSteffen Klassert /* The functions for replay detection. */ 204e45a8a9eSJulia Lawall const struct xfrm_replay *repl; 2059fdc4883SSteffen Klassert 2062717096aSJamal Hadi Salim /* internal flag that only holds state for delayed aevent at the 2072717096aSJamal Hadi Salim * moment 2082717096aSJamal Hadi Salim */ 2092717096aSJamal Hadi Salim u32 xflags; 2102717096aSJamal Hadi Salim 211f8cd5488SJamal Hadi Salim /* Replay detection notification settings */ 212f8cd5488SJamal Hadi Salim u32 replay_maxage; 213f8cd5488SJamal Hadi Salim u32 replay_maxdiff; 214f8cd5488SJamal Hadi Salim 215f8cd5488SJamal Hadi Salim /* Replay detection notification timer */ 216f8cd5488SJamal Hadi Salim struct timer_list rtimer; 217f8cd5488SJamal Hadi Salim 2181da177e4SLinus Torvalds /* Statistics */ 2191da177e4SLinus Torvalds struct xfrm_stats stats; 2201da177e4SLinus Torvalds 2211da177e4SLinus Torvalds struct xfrm_lifetime_cur curlft; 2229e0d57fdSYury Polyanskiy struct tasklet_hrtimer mtimer; 2231da177e4SLinus Torvalds 224d77e38e6SSteffen Klassert struct xfrm_state_offload xso; 225d77e38e6SSteffen Klassert 226e3c0d047SFan Du /* used to fix curlft->add_time when changing date */ 227e3c0d047SFan Du long saved_tmo; 228e3c0d047SFan Du 2299afaca05SMasahide NAKAMURA /* Last used time */ 23003dc7a35SArnd Bergmann time64_t lastused; 2319afaca05SMasahide NAKAMURA 232cac2661cSSteffen Klassert struct page_frag xfrag; 233cac2661cSSteffen Klassert 2341da177e4SLinus Torvalds /* Reference to data common to all the instances of this 2351da177e4SLinus Torvalds * transformer. */ 236533cb5b0SEric Dumazet const struct xfrm_type *type; 2374c145dceSFlorian Westphal const struct xfrm_mode *inner_mode; 2384c145dceSFlorian Westphal const struct xfrm_mode *inner_mode_iaf; 2394c145dceSFlorian Westphal const 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]; 3509d389d7fSSteffen Klassert 351d094cd83SHerbert Xu int (*init_flags)(struct xfrm_state *x); 35273e5ebb2SDavid S. Miller void (*init_tempsel)(struct xfrm_selector *sel, 35373e5ebb2SDavid S. Miller const struct flowi *fl); 35419bd6244SDavid S. Miller void (*init_temprop)(struct xfrm_state *x, 35519bd6244SDavid S. Miller const struct xfrm_tmpl *tmpl, 35619bd6244SDavid S. Miller const xfrm_address_t *daddr, 35719bd6244SDavid S. Miller const xfrm_address_t *saddr); 35841a49cc3SMasahide NAKAMURA int (*tmpl_sort)(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n); 35941a49cc3SMasahide NAKAMURA int (*state_sort)(struct xfrm_state **dst, struct xfrm_state **src, int n); 360ede2059dSEric W. Biederman int (*output)(struct net *net, struct sock *sk, struct sk_buff *skb); 3617026b1ddSDavid Miller int (*output_finish)(struct sock *sk, struct sk_buff *skb); 362227620e2SHerbert Xu int (*extract_input)(struct xfrm_state *x, 363227620e2SHerbert Xu struct sk_buff *skb); 36436cf9acfSHerbert Xu int (*extract_output)(struct xfrm_state *x, 36536cf9acfSHerbert Xu struct sk_buff *skb); 366716062fdSHerbert Xu int (*transport_finish)(struct sk_buff *skb, 367716062fdSHerbert Xu int async); 368628e341fSHannes Frederic Sowa void (*local_error)(struct sk_buff *skb, u32 mtu); 3691da177e4SLinus Torvalds }; 3701da177e4SLinus Torvalds 371d511337aSJoe Perches int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo); 372d511337aSJoe Perches int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo); 373d511337aSJoe Perches struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family); 374711059b9SFlorian Westphal struct xfrm_state_afinfo *xfrm_state_afinfo_get_rcu(unsigned int family); 3751da177e4SLinus Torvalds 3762f32b51bSSteffen Klassert struct xfrm_input_afinfo { 3772f32b51bSSteffen Klassert unsigned int family; 3782f32b51bSSteffen Klassert int (*callback)(struct sk_buff *skb, u8 protocol, 3792f32b51bSSteffen Klassert int err); 3802f32b51bSSteffen Klassert }; 3812f32b51bSSteffen Klassert 382960fdfdeSFlorian Westphal int xfrm_input_register_afinfo(const struct xfrm_input_afinfo *afinfo); 383960fdfdeSFlorian Westphal int xfrm_input_unregister_afinfo(const struct xfrm_input_afinfo *afinfo); 3842f32b51bSSteffen Klassert 385b48c05abSSteffen Klassert void xfrm_flush_gc(void); 386d511337aSJoe Perches void xfrm_state_delete_tunnel(struct xfrm_state *x); 3871da177e4SLinus Torvalds 388fd2c3ef7SEric Dumazet struct xfrm_type { 3891da177e4SLinus Torvalds char *description; 3901da177e4SLinus Torvalds struct module *owner; 391a6337463Sjamal u8 proto; 392a6337463Sjamal u8 flags; 3931b5c2299SMasahide NAKAMURA #define XFRM_TYPE_NON_FRAGMENT 1 394436a0a40SHerbert Xu #define XFRM_TYPE_REPLAY_PROT 2 395f04e7e8dSHerbert Xu #define XFRM_TYPE_LOCAL_COADDR 4 396f04e7e8dSHerbert Xu #define XFRM_TYPE_REMOTE_COADDR 8 3971da177e4SLinus Torvalds 39872cb6962SHerbert Xu int (*init_state)(struct xfrm_state *x); 3991da177e4SLinus Torvalds void (*destructor)(struct xfrm_state *); 400e695633eSHerbert Xu int (*input)(struct xfrm_state *, struct sk_buff *skb); 4011da177e4SLinus Torvalds int (*output)(struct xfrm_state *, struct sk_buff *pskb); 4028f029de2SDavid S. Miller int (*reject)(struct xfrm_state *, struct sk_buff *, 4038f029de2SDavid S. Miller const struct flowi *); 404aee5adb4SMasahide NAKAMURA int (*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **); 4051da177e4SLinus Torvalds /* Estimate maximal size of result of transformation of a dgram */ 406c5c25238SPatrick McHardy u32 (*get_mtu)(struct xfrm_state *, int size); 4071da177e4SLinus Torvalds }; 4081da177e4SLinus Torvalds 409d511337aSJoe Perches int xfrm_register_type(const struct xfrm_type *type, unsigned short family); 410d511337aSJoe Perches int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family); 4111da177e4SLinus Torvalds 4129d389d7fSSteffen Klassert struct xfrm_type_offload { 4139d389d7fSSteffen Klassert char *description; 4149d389d7fSSteffen Klassert struct module *owner; 4159d389d7fSSteffen Klassert u8 proto; 4169d389d7fSSteffen Klassert void (*encap)(struct xfrm_state *, struct sk_buff *pskb); 4179d389d7fSSteffen Klassert int (*input_tail)(struct xfrm_state *x, struct sk_buff *skb); 4189d389d7fSSteffen Klassert int (*xmit)(struct xfrm_state *, struct sk_buff *pskb, netdev_features_t features); 4199d389d7fSSteffen Klassert }; 4209d389d7fSSteffen Klassert 4219d389d7fSSteffen Klassert int xfrm_register_type_offload(const struct xfrm_type_offload *type, unsigned short family); 4229d389d7fSSteffen Klassert int xfrm_unregister_type_offload(const struct xfrm_type_offload *type, unsigned short family); 4239d389d7fSSteffen Klassert 424b59f45d0SHerbert Xu struct xfrm_mode { 425b262a695SFlorian Westphal u8 encap; 426b262a695SFlorian Westphal u8 family; 427b262a695SFlorian Westphal u8 flags; 4281bfcb10fSHerbert Xu }; 4291bfcb10fSHerbert Xu 4301bfcb10fSHerbert Xu /* Flags for xfrm_mode. */ 4311bfcb10fSHerbert Xu enum { 4321bfcb10fSHerbert Xu XFRM_MODE_FLAG_TUNNEL = 1, 433b59f45d0SHerbert Xu }; 434b59f45d0SHerbert Xu 435df9dcb45SKazunori MIYAZAWA static inline int xfrm_af2proto(unsigned int family) 436df9dcb45SKazunori MIYAZAWA { 437df9dcb45SKazunori MIYAZAWA switch(family) { 438df9dcb45SKazunori MIYAZAWA case AF_INET: 439df9dcb45SKazunori MIYAZAWA return IPPROTO_IPIP; 440df9dcb45SKazunori MIYAZAWA case AF_INET6: 441df9dcb45SKazunori MIYAZAWA return IPPROTO_IPV6; 442df9dcb45SKazunori MIYAZAWA default: 443df9dcb45SKazunori MIYAZAWA return 0; 444df9dcb45SKazunori MIYAZAWA } 445df9dcb45SKazunori MIYAZAWA } 446df9dcb45SKazunori MIYAZAWA 4474c145dceSFlorian Westphal static inline const struct xfrm_mode *xfrm_ip2inner_mode(struct xfrm_state *x, int ipproto) 448df9dcb45SKazunori MIYAZAWA { 449df9dcb45SKazunori MIYAZAWA if ((ipproto == IPPROTO_IPIP && x->props.family == AF_INET) || 450df9dcb45SKazunori MIYAZAWA (ipproto == IPPROTO_IPV6 && x->props.family == AF_INET6)) 451df9dcb45SKazunori MIYAZAWA return x->inner_mode; 452df9dcb45SKazunori MIYAZAWA else 453df9dcb45SKazunori MIYAZAWA return x->inner_mode_iaf; 454df9dcb45SKazunori MIYAZAWA } 455df9dcb45SKazunori MIYAZAWA 456fd2c3ef7SEric Dumazet struct xfrm_tmpl { 4571da177e4SLinus Torvalds /* id in template is interpreted as: 4581da177e4SLinus Torvalds * daddr - destination of tunnel, may be zero for transport mode. 4591da177e4SLinus Torvalds * spi - zero to acquire spi. Not zero if spi is static, then 4601da177e4SLinus Torvalds * daddr must be fixed too. 4611da177e4SLinus Torvalds * proto - AH/ESP/IPCOMP 4621da177e4SLinus Torvalds */ 4631da177e4SLinus Torvalds struct xfrm_id id; 4641da177e4SLinus Torvalds 4651da177e4SLinus Torvalds /* Source address of tunnel. Ignored, if it is not a tunnel. */ 4661da177e4SLinus Torvalds xfrm_address_t saddr; 4671da177e4SLinus Torvalds 46876b3f055SMiika Komu unsigned short encap_family; 46976b3f055SMiika Komu 470a6337463Sjamal u32 reqid; 4711da177e4SLinus Torvalds 4727e49e6deSMasahide NAKAMURA /* Mode: transport, tunnel etc. */ 473a6337463Sjamal u8 mode; 4741da177e4SLinus Torvalds 4751da177e4SLinus Torvalds /* Sharing mode: unique, this session only, this user only etc. */ 476a6337463Sjamal u8 share; 4771da177e4SLinus Torvalds 4781da177e4SLinus Torvalds /* May skip this transfomration if no SA is found */ 479a6337463Sjamal u8 optional; 4801da177e4SLinus Torvalds 481c5d18e98SHerbert Xu /* Skip aalgos/ealgos/calgos checks. */ 482a6337463Sjamal u8 allalgs; 483c5d18e98SHerbert Xu 4841da177e4SLinus Torvalds /* Bit mask of algos allowed for acquisition */ 485a6337463Sjamal u32 aalgos; 486a6337463Sjamal u32 ealgos; 487a6337463Sjamal u32 calgos; 4881da177e4SLinus Torvalds }; 4891da177e4SLinus Torvalds 490622dc828SMasahide NAKAMURA #define XFRM_MAX_DEPTH 6 49154ef207aSSteffen Klassert #define XFRM_MAX_OFFLOAD_DEPTH 1 4921da177e4SLinus Torvalds 49312a169e7SHerbert Xu struct xfrm_policy_walk_entry { 49412a169e7SHerbert Xu struct list_head all; 49512a169e7SHerbert Xu u8 dead; 49612a169e7SHerbert Xu }; 49712a169e7SHerbert Xu 49812a169e7SHerbert Xu struct xfrm_policy_walk { 49912a169e7SHerbert Xu struct xfrm_policy_walk_entry walk; 50012a169e7SHerbert Xu u8 type; 50112a169e7SHerbert Xu u32 seq; 50212a169e7SHerbert Xu }; 50312a169e7SHerbert Xu 504a0073fe1SSteffen Klassert struct xfrm_policy_queue { 505a0073fe1SSteffen Klassert struct sk_buff_head hold_queue; 506a0073fe1SSteffen Klassert struct timer_list hold_timer; 507a0073fe1SSteffen Klassert unsigned long timeout; 508a0073fe1SSteffen Klassert }; 509a0073fe1SSteffen Klassert 510fd2c3ef7SEric Dumazet struct xfrm_policy { 5110c5c9fb5SEric W. Biederman possible_net_t xp_net; 5122518c7c2SDavid S. Miller struct hlist_node bydst; 5132518c7c2SDavid S. Miller struct hlist_node byidx; 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds /* This lock only affects elements except for entry. */ 5161da177e4SLinus Torvalds rwlock_t lock; 517850a6212SReshetova, Elena refcount_t refcnt; 5186be3b0dbSFlorian Westphal u32 pos; 5191da177e4SLinus Torvalds struct timer_list timer; 5201da177e4SLinus Torvalds 52180c802f3STimo Teräs atomic_t genid; 5221da177e4SLinus Torvalds u32 priority; 5231da177e4SLinus Torvalds u32 index; 5247e652640SSteffen Klassert u32 if_id; 525bf825f81SJamal Hadi Salim struct xfrm_mark mark; 5261da177e4SLinus Torvalds struct xfrm_selector selector; 5271da177e4SLinus Torvalds struct xfrm_lifetime_cfg lft; 5281da177e4SLinus Torvalds struct xfrm_lifetime_cur curlft; 52912a169e7SHerbert Xu struct xfrm_policy_walk_entry walk; 530a0073fe1SSteffen Klassert struct xfrm_policy_queue polq; 5319cf545ebSFlorian Westphal bool bydst_reinsert; 53246ca5f5dSArnaldo Carvalho de Melo u8 type; 53346ca5f5dSArnaldo Carvalho de Melo u8 action; 53446ca5f5dSArnaldo Carvalho de Melo u8 flags; 53546ca5f5dSArnaldo Carvalho de Melo u8 xfrm_nr; 53612a169e7SHerbert Xu u16 family; 537df71837dSTrent Jaeger struct xfrm_sec_ctx *security; 5381da177e4SLinus Torvalds struct xfrm_tmpl xfrm_vec[XFRM_MAX_DEPTH]; 53924969facSFlorian Westphal struct hlist_node bydst_inexact_list; 54056f04730SEric Dumazet struct rcu_head rcu; 5411da177e4SLinus Torvalds }; 5421da177e4SLinus Torvalds 54363eb23f5SDavid S. Miller static inline struct net *xp_net(const struct xfrm_policy *xp) 5440331b1f3SAlexey Dobriyan { 5450331b1f3SAlexey Dobriyan return read_pnet(&xp->xp_net); 5460331b1f3SAlexey Dobriyan } 5470331b1f3SAlexey Dobriyan 54813c1d189SArnaud Ebalard struct xfrm_kmaddress { 54913c1d189SArnaud Ebalard xfrm_address_t local; 55013c1d189SArnaud Ebalard xfrm_address_t remote; 55113c1d189SArnaud Ebalard u32 reserved; 55213c1d189SArnaud Ebalard u16 family; 55313c1d189SArnaud Ebalard }; 55413c1d189SArnaud Ebalard 55580c9abaaSShinta Sugimoto struct xfrm_migrate { 55680c9abaaSShinta Sugimoto xfrm_address_t old_daddr; 55780c9abaaSShinta Sugimoto xfrm_address_t old_saddr; 55880c9abaaSShinta Sugimoto xfrm_address_t new_daddr; 55980c9abaaSShinta Sugimoto xfrm_address_t new_saddr; 56080c9abaaSShinta Sugimoto u8 proto; 56180c9abaaSShinta Sugimoto u8 mode; 56280c9abaaSShinta Sugimoto u16 reserved; 56380c9abaaSShinta Sugimoto u32 reqid; 56480c9abaaSShinta Sugimoto u16 old_family; 56580c9abaaSShinta Sugimoto u16 new_family; 56680c9abaaSShinta Sugimoto }; 56780c9abaaSShinta Sugimoto 5681da177e4SLinus Torvalds #define XFRM_KM_TIMEOUT 30 569f8cd5488SJamal Hadi Salim /* what happened */ 570f8cd5488SJamal Hadi Salim #define XFRM_REPLAY_UPDATE XFRM_AE_CR 571f8cd5488SJamal Hadi Salim #define XFRM_REPLAY_TIMEOUT XFRM_AE_CE 572f8cd5488SJamal Hadi Salim 573f8cd5488SJamal Hadi Salim /* default aevent timeout in units of 100ms */ 574f8cd5488SJamal Hadi Salim #define XFRM_AE_ETIME 10 575f8cd5488SJamal Hadi Salim /* Async Event timer multiplier */ 576f8cd5488SJamal Hadi Salim #define XFRM_AE_ETH_M 10 577f8cd5488SJamal Hadi Salim /* default seq threshold size */ 578f8cd5488SJamal Hadi Salim #define XFRM_AE_SEQT_SIZE 2 5791da177e4SLinus Torvalds 580fd2c3ef7SEric Dumazet struct xfrm_mgr { 5811da177e4SLinus Torvalds struct list_head list; 582214e005bSDavid S. Miller int (*notify)(struct xfrm_state *x, const struct km_event *c); 58365e0736bSFan Du int (*acquire)(struct xfrm_state *x, struct xfrm_tmpl *, struct xfrm_policy *xp); 584cb969f07SVenkat Yekkirala struct xfrm_policy *(*compile_policy)(struct sock *sk, int opt, u8 *data, int len, int *dir); 5855d36b180SAl Viro int (*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport); 586214e005bSDavid S. Miller int (*notify_policy)(struct xfrm_policy *x, int dir, const struct km_event *c); 587db983c11SAlexey Dobriyan int (*report)(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr); 588183cad12SDavid S. Miller int (*migrate)(const struct xfrm_selector *sel, 589183cad12SDavid S. Miller u8 dir, u8 type, 590183cad12SDavid S. Miller const struct xfrm_migrate *m, 591183cad12SDavid S. Miller int num_bundles, 5928bafd730SAntony Antony const struct xfrm_kmaddress *k, 5938bafd730SAntony Antony const struct xfrm_encap_tmpl *encap); 5940f24558eSHoria Geanta bool (*is_alive)(const struct km_event *c); 5951da177e4SLinus Torvalds }; 5961da177e4SLinus Torvalds 597d511337aSJoe Perches int xfrm_register_km(struct xfrm_mgr *km); 598d511337aSJoe Perches int xfrm_unregister_km(struct xfrm_mgr *km); 5991da177e4SLinus Torvalds 60070be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb { 60170be6c91SSteffen Klassert union { 60270be6c91SSteffen Klassert struct inet_skb_parm h4; 60370be6c91SSteffen Klassert struct inet6_skb_parm h6; 60470be6c91SSteffen Klassert } header; 60570be6c91SSteffen Klassert 60670be6c91SSteffen Klassert union { 60770be6c91SSteffen Klassert struct ip_tunnel *ip4; 60870be6c91SSteffen Klassert struct ip6_tnl *ip6; 60970be6c91SSteffen Klassert } tunnel; 61070be6c91SSteffen Klassert }; 61170be6c91SSteffen Klassert 61270be6c91SSteffen Klassert #define XFRM_TUNNEL_SKB_CB(__skb) ((struct xfrm_tunnel_skb_cb *)&((__skb)->cb[0])) 61370be6c91SSteffen Klassert 614436a0a40SHerbert Xu /* 615436a0a40SHerbert Xu * This structure is used for the duration where packets are being 616436a0a40SHerbert Xu * transformed by IPsec. As soon as the packet leaves IPsec the 617436a0a40SHerbert Xu * area beyond the generic IP part may be overwritten. 618436a0a40SHerbert Xu */ 619436a0a40SHerbert Xu struct xfrm_skb_cb { 62070be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 621436a0a40SHerbert Xu 622436a0a40SHerbert Xu /* Sequence number for replay protection. */ 623b318e0e4SHerbert Xu union { 6241ce3644aSSteffen Klassert struct { 6251ce3644aSSteffen Klassert __u32 low; 6261ce3644aSSteffen Klassert __u32 hi; 6271ce3644aSSteffen Klassert } output; 6281ce3644aSSteffen Klassert struct { 6291ce3644aSSteffen Klassert __be32 low; 6301ce3644aSSteffen Klassert __be32 hi; 6311ce3644aSSteffen Klassert } input; 632b318e0e4SHerbert Xu } seq; 633436a0a40SHerbert Xu }; 634436a0a40SHerbert Xu 635436a0a40SHerbert Xu #define XFRM_SKB_CB(__skb) ((struct xfrm_skb_cb *)&((__skb)->cb[0])) 636436a0a40SHerbert Xu 63736cf9acfSHerbert Xu /* 63836cf9acfSHerbert Xu * This structure is used by the afinfo prepare_input/prepare_output functions 63936cf9acfSHerbert Xu * to transmit header information to the mode input/output functions. 64036cf9acfSHerbert Xu */ 64136cf9acfSHerbert Xu struct xfrm_mode_skb_cb { 64270be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 64336cf9acfSHerbert Xu 64436cf9acfSHerbert Xu /* Copied from header for IPv4, always set to zero and DF for IPv6. */ 64536cf9acfSHerbert Xu __be16 id; 64636cf9acfSHerbert Xu __be16 frag_off; 64736cf9acfSHerbert Xu 648732c8bd5SHerbert Xu /* IP header length (excluding options or extension headers). */ 649732c8bd5SHerbert Xu u8 ihl; 650732c8bd5SHerbert Xu 65136cf9acfSHerbert Xu /* TOS for IPv4, class for IPv6. */ 65236cf9acfSHerbert Xu u8 tos; 65336cf9acfSHerbert Xu 65436cf9acfSHerbert Xu /* TTL for IPv4, hop limitfor IPv6. */ 65536cf9acfSHerbert Xu u8 ttl; 65636cf9acfSHerbert Xu 65736cf9acfSHerbert Xu /* Protocol for IPv4, NH for IPv6. */ 65836cf9acfSHerbert Xu u8 protocol; 65936cf9acfSHerbert Xu 660732c8bd5SHerbert Xu /* Option length for IPv4, zero for IPv6. */ 661732c8bd5SHerbert Xu u8 optlen; 662732c8bd5SHerbert Xu 66336cf9acfSHerbert Xu /* Used by IPv6 only, zero for IPv4. */ 66436cf9acfSHerbert Xu u8 flow_lbl[3]; 66536cf9acfSHerbert Xu }; 66636cf9acfSHerbert Xu 66736cf9acfSHerbert Xu #define XFRM_MODE_SKB_CB(__skb) ((struct xfrm_mode_skb_cb *)&((__skb)->cb[0])) 66836cf9acfSHerbert Xu 669716062fdSHerbert Xu /* 670716062fdSHerbert Xu * This structure is used by the input processing to locate the SPI and 671716062fdSHerbert Xu * related information. 672716062fdSHerbert Xu */ 673716062fdSHerbert Xu struct xfrm_spi_skb_cb { 67470be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 675716062fdSHerbert Xu 676716062fdSHerbert Xu unsigned int daddroff; 6772fcb45b6SHerbert Xu unsigned int family; 6787785bba2SSteffen Klassert __be32 seq; 679716062fdSHerbert Xu }; 680716062fdSHerbert Xu 681716062fdSHerbert Xu #define XFRM_SPI_SKB_CB(__skb) ((struct xfrm_spi_skb_cb *)&((__skb)->cb[0])) 682716062fdSHerbert Xu 683c9204d9cSJoy Latten #ifdef CONFIG_AUDITSYSCALL 684afeb14b4SPaul Moore static inline struct audit_buffer *xfrm_audit_start(const char *op) 685ab5f5e8bSJoy Latten { 686ab5f5e8bSJoy Latten struct audit_buffer *audit_buf = NULL; 687ab5f5e8bSJoy Latten 688f7859590SRichard Guy Briggs if (audit_enabled == AUDIT_OFF) 689afeb14b4SPaul Moore return NULL; 690cdfb6b34SRichard Guy Briggs audit_buf = audit_log_start(audit_context(), GFP_ATOMIC, 691ab5f5e8bSJoy Latten AUDIT_MAC_IPSEC_EVENT); 692ab5f5e8bSJoy Latten if (audit_buf == NULL) 693ab5f5e8bSJoy Latten return NULL; 694afeb14b4SPaul Moore audit_log_format(audit_buf, "op=%s", op); 695afeb14b4SPaul Moore return audit_buf; 696afeb14b4SPaul Moore } 697afeb14b4SPaul Moore 6982e71029eSTetsuo Handa static inline void xfrm_audit_helper_usrinfo(bool task_valid, 699afeb14b4SPaul Moore struct audit_buffer *audit_buf) 700afeb14b4SPaul Moore { 7012e71029eSTetsuo Handa const unsigned int auid = from_kuid(&init_user_ns, task_valid ? 7022e71029eSTetsuo Handa audit_get_loginuid(current) : 7032e71029eSTetsuo Handa INVALID_UID); 7042e71029eSTetsuo Handa const unsigned int ses = task_valid ? audit_get_sessionid(current) : 705f0b75216SRichard Guy Briggs AUDIT_SID_UNSET; 7062e71029eSTetsuo Handa 7072e71029eSTetsuo Handa audit_log_format(audit_buf, " auid=%u ses=%u", auid, ses); 708ab5f5e8bSJoy Latten audit_log_task_context(audit_buf); 709ab5f5e8bSJoy Latten } 710ab5f5e8bSJoy Latten 7112e71029eSTetsuo Handa void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, bool task_valid); 7122e71029eSTetsuo Handa void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result, 7132e71029eSTetsuo Handa bool task_valid); 7142e71029eSTetsuo Handa void xfrm_audit_state_add(struct xfrm_state *x, int result, bool task_valid); 7152e71029eSTetsuo Handa void xfrm_audit_state_delete(struct xfrm_state *x, int result, bool task_valid); 716d511337aSJoe Perches void xfrm_audit_state_replay_overflow(struct xfrm_state *x, 717afeb14b4SPaul Moore struct sk_buff *skb); 718d511337aSJoe Perches void xfrm_audit_state_replay(struct xfrm_state *x, struct sk_buff *skb, 719d511337aSJoe Perches __be32 net_seq); 720d511337aSJoe Perches void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family); 721d511337aSJoe Perches void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, __be32 net_spi, 722d511337aSJoe Perches __be32 net_seq); 723d511337aSJoe Perches void xfrm_audit_state_icvfail(struct xfrm_state *x, struct sk_buff *skb, 724d511337aSJoe Perches u8 proto); 725c9204d9cSJoy Latten #else 72641fef0eeSMarcin Slusarz 72741fef0eeSMarcin Slusarz static inline void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, 7282e71029eSTetsuo Handa bool task_valid) 72941fef0eeSMarcin Slusarz { 73041fef0eeSMarcin Slusarz } 73141fef0eeSMarcin Slusarz 73241fef0eeSMarcin Slusarz static inline void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result, 7332e71029eSTetsuo Handa bool task_valid) 73441fef0eeSMarcin Slusarz { 73541fef0eeSMarcin Slusarz } 73641fef0eeSMarcin Slusarz 73741fef0eeSMarcin Slusarz static inline void xfrm_audit_state_add(struct xfrm_state *x, int result, 7382e71029eSTetsuo Handa bool task_valid) 73941fef0eeSMarcin Slusarz { 74041fef0eeSMarcin Slusarz } 74141fef0eeSMarcin Slusarz 74241fef0eeSMarcin Slusarz static inline void xfrm_audit_state_delete(struct xfrm_state *x, int result, 7432e71029eSTetsuo Handa bool task_valid) 74441fef0eeSMarcin Slusarz { 74541fef0eeSMarcin Slusarz } 74641fef0eeSMarcin Slusarz 74741fef0eeSMarcin Slusarz static inline void xfrm_audit_state_replay_overflow(struct xfrm_state *x, 74841fef0eeSMarcin Slusarz struct sk_buff *skb) 74941fef0eeSMarcin Slusarz { 75041fef0eeSMarcin Slusarz } 75141fef0eeSMarcin Slusarz 7529fdc4883SSteffen Klassert static inline void xfrm_audit_state_replay(struct xfrm_state *x, 7539fdc4883SSteffen Klassert struct sk_buff *skb, __be32 net_seq) 7549fdc4883SSteffen Klassert { 7559fdc4883SSteffen Klassert } 7569fdc4883SSteffen Klassert 75741fef0eeSMarcin Slusarz static inline void xfrm_audit_state_notfound_simple(struct sk_buff *skb, 75841fef0eeSMarcin Slusarz u16 family) 75941fef0eeSMarcin Slusarz { 76041fef0eeSMarcin Slusarz } 76141fef0eeSMarcin Slusarz 76241fef0eeSMarcin Slusarz static inline void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, 76341fef0eeSMarcin Slusarz __be32 net_spi, __be32 net_seq) 76441fef0eeSMarcin Slusarz { 76541fef0eeSMarcin Slusarz } 76641fef0eeSMarcin Slusarz 76741fef0eeSMarcin Slusarz static inline void xfrm_audit_state_icvfail(struct xfrm_state *x, 76841fef0eeSMarcin Slusarz struct sk_buff *skb, u8 proto) 76941fef0eeSMarcin Slusarz { 77041fef0eeSMarcin Slusarz } 771c9204d9cSJoy Latten #endif /* CONFIG_AUDITSYSCALL */ 772161a09e7SJoy Latten 7731da177e4SLinus Torvalds static inline void xfrm_pol_hold(struct xfrm_policy *policy) 7741da177e4SLinus Torvalds { 7751da177e4SLinus Torvalds if (likely(policy != NULL)) 776850a6212SReshetova, Elena refcount_inc(&policy->refcnt); 7771da177e4SLinus Torvalds } 7781da177e4SLinus Torvalds 779d511337aSJoe Perches void xfrm_policy_destroy(struct xfrm_policy *policy); 7801da177e4SLinus Torvalds 7811da177e4SLinus Torvalds static inline void xfrm_pol_put(struct xfrm_policy *policy) 7821da177e4SLinus Torvalds { 783850a6212SReshetova, Elena if (refcount_dec_and_test(&policy->refcnt)) 78464c31b3fSWANG Cong xfrm_policy_destroy(policy); 7851da177e4SLinus Torvalds } 7861da177e4SLinus Torvalds 7874e81bb83SMasahide NAKAMURA static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols) 7884e81bb83SMasahide NAKAMURA { 7894e81bb83SMasahide NAKAMURA int i; 7904e81bb83SMasahide NAKAMURA for (i = npols - 1; i >= 0; --i) 7914e81bb83SMasahide NAKAMURA xfrm_pol_put(pols[i]); 7924e81bb83SMasahide NAKAMURA } 7934e81bb83SMasahide NAKAMURA 794f75a2804SCong Wang void __xfrm_state_destroy(struct xfrm_state *, bool); 7951da177e4SLinus Torvalds 79621380b81SHerbert Xu static inline void __xfrm_state_put(struct xfrm_state *x) 79721380b81SHerbert Xu { 79888755e9cSReshetova, Elena refcount_dec(&x->refcnt); 79921380b81SHerbert Xu } 80021380b81SHerbert Xu 8011da177e4SLinus Torvalds static inline void xfrm_state_put(struct xfrm_state *x) 8021da177e4SLinus Torvalds { 80388755e9cSReshetova, Elena if (refcount_dec_and_test(&x->refcnt)) 804f75a2804SCong Wang __xfrm_state_destroy(x, false); 805f75a2804SCong Wang } 806f75a2804SCong Wang 807f75a2804SCong Wang static inline void xfrm_state_put_sync(struct xfrm_state *x) 808f75a2804SCong Wang { 809f75a2804SCong Wang if (refcount_dec_and_test(&x->refcnt)) 810f75a2804SCong Wang __xfrm_state_destroy(x, true); 8111da177e4SLinus Torvalds } 8121da177e4SLinus Torvalds 8131da177e4SLinus Torvalds static inline void xfrm_state_hold(struct xfrm_state *x) 8141da177e4SLinus Torvalds { 81588755e9cSReshetova, Elena refcount_inc(&x->refcnt); 8161da177e4SLinus Torvalds } 8171da177e4SLinus Torvalds 8181744a8feSDavid S. Miller static inline bool addr_match(const void *token1, const void *token2, 819e1b0048eSAlexey Dobriyan unsigned int prefixlen) 8201da177e4SLinus Torvalds { 8211744a8feSDavid S. Miller const __be32 *a1 = token1; 8221744a8feSDavid S. Miller const __be32 *a2 = token2; 823e1b0048eSAlexey Dobriyan unsigned int pdw; 824e1b0048eSAlexey Dobriyan unsigned int pbi; 8251da177e4SLinus Torvalds 826a6337463Sjamal pdw = prefixlen >> 5; /* num of whole u32 in prefix */ 8271da177e4SLinus Torvalds pbi = prefixlen & 0x1f; /* num of bits in incomplete u32 in prefix */ 8281da177e4SLinus Torvalds 8291da177e4SLinus Torvalds if (pdw) 8301da177e4SLinus Torvalds if (memcmp(a1, a2, pdw << 2)) 8311744a8feSDavid S. Miller return false; 8321da177e4SLinus Torvalds 8331da177e4SLinus Torvalds if (pbi) { 8345f19343fSAl Viro __be32 mask; 8351da177e4SLinus Torvalds 8361da177e4SLinus Torvalds mask = htonl((0xffffffff) << (32 - pbi)); 8371da177e4SLinus Torvalds 8381da177e4SLinus Torvalds if ((a1[pdw] ^ a2[pdw]) & mask) 8391744a8feSDavid S. Miller return false; 8401da177e4SLinus Torvalds } 8411da177e4SLinus Torvalds 8421744a8feSDavid S. Miller return true; 8431da177e4SLinus Torvalds } 8441da177e4SLinus Torvalds 84526bff940SAlexey Dobriyan static inline bool addr4_match(__be32 a1, __be32 a2, u8 prefixlen) 84626bff940SAlexey Dobriyan { 84726bff940SAlexey Dobriyan /* C99 6.5.7 (3): u32 << 32 is undefined behaviour */ 8486c786bcbSAlexey Dobriyan if (sizeof(long) == 4 && prefixlen == 0) 84926bff940SAlexey Dobriyan return true; 8506c786bcbSAlexey Dobriyan return !((a1 ^ a2) & htonl(~0UL << (32 - prefixlen))); 85126bff940SAlexey Dobriyan } 85226bff940SAlexey Dobriyan 8531da177e4SLinus Torvalds static __inline__ 8546281dcc9SDavid S. Miller __be16 xfrm_flowi_sport(const struct flowi *fl, const union flowi_uli *uli) 8551da177e4SLinus Torvalds { 856f9d07e41SAl Viro __be16 port; 8571d28f42cSDavid S. Miller switch(fl->flowi_proto) { 8581da177e4SLinus Torvalds case IPPROTO_TCP: 8591da177e4SLinus Torvalds case IPPROTO_UDP: 860ba4e58ecSGerrit Renker case IPPROTO_UDPLITE: 8611da177e4SLinus Torvalds case IPPROTO_SCTP: 8626281dcc9SDavid S. Miller port = uli->ports.sport; 8631da177e4SLinus Torvalds break; 8641da177e4SLinus Torvalds case IPPROTO_ICMP: 8651da177e4SLinus Torvalds case IPPROTO_ICMPV6: 8666281dcc9SDavid S. Miller port = htons(uli->icmpt.type); 8671da177e4SLinus Torvalds break; 8682ce4272aSMasahide NAKAMURA case IPPROTO_MH: 8696281dcc9SDavid S. Miller port = htons(uli->mht.type); 8702ce4272aSMasahide NAKAMURA break; 871cc9ff19dSTimo Teräs case IPPROTO_GRE: 8726281dcc9SDavid S. Miller port = htons(ntohl(uli->gre_key) >> 16); 873cc9ff19dSTimo Teräs break; 8741da177e4SLinus Torvalds default: 8751da177e4SLinus Torvalds port = 0; /*XXX*/ 8761da177e4SLinus Torvalds } 8771da177e4SLinus Torvalds return port; 8781da177e4SLinus Torvalds } 8791da177e4SLinus Torvalds 8801da177e4SLinus Torvalds static __inline__ 8816281dcc9SDavid S. Miller __be16 xfrm_flowi_dport(const struct flowi *fl, const union flowi_uli *uli) 8821da177e4SLinus Torvalds { 883f9d07e41SAl Viro __be16 port; 8841d28f42cSDavid S. Miller switch(fl->flowi_proto) { 8851da177e4SLinus Torvalds case IPPROTO_TCP: 8861da177e4SLinus Torvalds case IPPROTO_UDP: 887ba4e58ecSGerrit Renker case IPPROTO_UDPLITE: 8881da177e4SLinus Torvalds case IPPROTO_SCTP: 8896281dcc9SDavid S. Miller port = uli->ports.dport; 8901da177e4SLinus Torvalds break; 8911da177e4SLinus Torvalds case IPPROTO_ICMP: 8921da177e4SLinus Torvalds case IPPROTO_ICMPV6: 8936281dcc9SDavid S. Miller port = htons(uli->icmpt.code); 8941da177e4SLinus Torvalds break; 895cc9ff19dSTimo Teräs case IPPROTO_GRE: 8966281dcc9SDavid S. Miller port = htons(ntohl(uli->gre_key) & 0xffff); 897cc9ff19dSTimo Teräs break; 8981da177e4SLinus Torvalds default: 8991da177e4SLinus Torvalds port = 0; /*XXX*/ 9001da177e4SLinus Torvalds } 9011da177e4SLinus Torvalds return port; 9021da177e4SLinus Torvalds } 9031da177e4SLinus Torvalds 904d511337aSJoe Perches bool xfrm_selector_match(const struct xfrm_selector *sel, 905d511337aSJoe Perches const struct flowi *fl, unsigned short family); 9061da177e4SLinus Torvalds 907df71837dSTrent Jaeger #ifdef CONFIG_SECURITY_NETWORK_XFRM 908df71837dSTrent Jaeger /* If neither has a context --> match 909df71837dSTrent Jaeger * Otherwise, both must have a context and the sids, doi, alg must match 910df71837dSTrent Jaeger */ 911bc9b35adSDavid S. Miller static inline bool xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2) 912df71837dSTrent Jaeger { 913df71837dSTrent Jaeger return ((!s1 && !s2) || 914df71837dSTrent Jaeger (s1 && s2 && 915df71837dSTrent Jaeger (s1->ctx_sid == s2->ctx_sid) && 916df71837dSTrent Jaeger (s1->ctx_doi == s2->ctx_doi) && 917df71837dSTrent Jaeger (s1->ctx_alg == s2->ctx_alg))); 918df71837dSTrent Jaeger } 919df71837dSTrent Jaeger #else 920bc9b35adSDavid S. Miller static inline bool xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2) 921df71837dSTrent Jaeger { 922bc9b35adSDavid S. Miller return true; 923df71837dSTrent Jaeger } 924df71837dSTrent Jaeger #endif 925df71837dSTrent Jaeger 9261da177e4SLinus Torvalds /* A struct encoding bundle of transformations to apply to some set of flow. 9271da177e4SLinus Torvalds * 928b6ca8bd5SDavid Miller * xdst->child points to the next element of bundle. 9291da177e4SLinus Torvalds * dst->xfrm points to an instanse of transformer. 9301da177e4SLinus Torvalds * 9311da177e4SLinus Torvalds * Due to unfortunate limitations of current routing cache, which we 9321da177e4SLinus Torvalds * have no time to fix, it mirrors struct rtable and bound to the same 9331da177e4SLinus Torvalds * routing key, including saddr,daddr. However, we can have many of 9341da177e4SLinus Torvalds * bundles differing by session id. All the bundles grow from a parent 9351da177e4SLinus Torvalds * policy rule. 9361da177e4SLinus Torvalds */ 937fd2c3ef7SEric Dumazet struct xfrm_dst { 9381da177e4SLinus Torvalds union { 9391da177e4SLinus Torvalds struct dst_entry dst; 9401da177e4SLinus Torvalds struct rtable rt; 9411da177e4SLinus Torvalds struct rt6_info rt6; 9421da177e4SLinus Torvalds } u; 9431da177e4SLinus Torvalds struct dst_entry *route; 944b6ca8bd5SDavid Miller struct dst_entry *child; 9450f6c480fSDavid Miller struct dst_entry *path; 94680c802f3STimo Teräs struct xfrm_policy *pols[XFRM_POLICY_TYPE_MAX]; 94780c802f3STimo Teräs int num_pols, num_xfrms; 94880c802f3STimo Teräs u32 xfrm_genid; 94980c802f3STimo Teräs u32 policy_genid; 9501da177e4SLinus Torvalds u32 route_mtu_cached; 9511da177e4SLinus Torvalds u32 child_mtu_cached; 95292d63decSHideaki YOSHIFUJI u32 route_cookie; 95392d63decSHideaki YOSHIFUJI u32 path_cookie; 9541da177e4SLinus Torvalds }; 9551da177e4SLinus Torvalds 9560f6c480fSDavid Miller static inline struct dst_entry *xfrm_dst_path(const struct dst_entry *dst) 9570f6c480fSDavid Miller { 9580f6c480fSDavid Miller #ifdef CONFIG_XFRM 9590f6c480fSDavid Miller if (dst->xfrm) { 9600f6c480fSDavid Miller const struct xfrm_dst *xdst = (const struct xfrm_dst *) dst; 9610f6c480fSDavid Miller 9620f6c480fSDavid Miller return xdst->path; 9630f6c480fSDavid Miller } 9640f6c480fSDavid Miller #endif 9650f6c480fSDavid Miller return (struct dst_entry *) dst; 9660f6c480fSDavid Miller } 9670f6c480fSDavid Miller 968b92cf4aaSDavid Miller static inline struct dst_entry *xfrm_dst_child(const struct dst_entry *dst) 969b92cf4aaSDavid Miller { 970b92cf4aaSDavid Miller #ifdef CONFIG_XFRM 971b6ca8bd5SDavid Miller if (dst->xfrm) { 972b6ca8bd5SDavid Miller struct xfrm_dst *xdst = (struct xfrm_dst *) dst; 973b6ca8bd5SDavid Miller return xdst->child; 974b6ca8bd5SDavid Miller } 975b92cf4aaSDavid Miller #endif 976b92cf4aaSDavid Miller return NULL; 977b92cf4aaSDavid Miller } 978b92cf4aaSDavid Miller 979def8b4faSAlexey Dobriyan #ifdef CONFIG_XFRM 98045b018beSDavid Miller static inline void xfrm_dst_set_child(struct xfrm_dst *xdst, struct dst_entry *child) 98145b018beSDavid Miller { 982b6ca8bd5SDavid Miller xdst->child = child; 98345b018beSDavid Miller } 98445b018beSDavid Miller 985aabc9761SHerbert Xu static inline void xfrm_dst_destroy(struct xfrm_dst *xdst) 986aabc9761SHerbert Xu { 98780c802f3STimo Teräs xfrm_pols_put(xdst->pols, xdst->num_pols); 988aabc9761SHerbert Xu dst_release(xdst->route); 989aabc9761SHerbert Xu if (likely(xdst->u.dst.xfrm)) 990aabc9761SHerbert Xu xfrm_state_put(xdst->u.dst.xfrm); 991aabc9761SHerbert Xu } 992def8b4faSAlexey Dobriyan #endif 993aabc9761SHerbert Xu 994d511337aSJoe Perches void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev); 995aabc9761SHerbert Xu 996f203b76dSSteffen Klassert struct xfrm_if_parms { 997f203b76dSSteffen Klassert char name[IFNAMSIZ]; /* name of XFRM device */ 998f203b76dSSteffen Klassert int link; /* ifindex of underlying L2 interface */ 999f203b76dSSteffen Klassert u32 if_id; /* interface identifyer */ 1000f203b76dSSteffen Klassert }; 1001f203b76dSSteffen Klassert 1002f203b76dSSteffen Klassert struct xfrm_if { 1003f203b76dSSteffen Klassert struct xfrm_if __rcu *next; /* next interface in list */ 1004f203b76dSSteffen Klassert struct net_device *dev; /* virtual device associated with interface */ 1005f203b76dSSteffen Klassert struct net_device *phydev; /* physical device */ 1006f203b76dSSteffen Klassert struct net *net; /* netns for packet i/o */ 1007f203b76dSSteffen Klassert struct xfrm_if_parms p; /* interface parms */ 1008f203b76dSSteffen Klassert 1009f203b76dSSteffen Klassert struct gro_cells gro_cells; 1010f203b76dSSteffen Klassert }; 1011f203b76dSSteffen Klassert 101254ef207aSSteffen Klassert struct xfrm_offload { 101354ef207aSSteffen Klassert /* Output sequence number for replay protection on offloading. */ 101454ef207aSSteffen Klassert struct { 101554ef207aSSteffen Klassert __u32 low; 101654ef207aSSteffen Klassert __u32 hi; 101754ef207aSSteffen Klassert } seq; 101854ef207aSSteffen Klassert 101954ef207aSSteffen Klassert __u32 flags; 102054ef207aSSteffen Klassert #define SA_DELETE_REQ 1 102154ef207aSSteffen Klassert #define CRYPTO_DONE 2 102254ef207aSSteffen Klassert #define CRYPTO_NEXT_DONE 4 102354ef207aSSteffen Klassert #define CRYPTO_FALLBACK 8 102454ef207aSSteffen Klassert #define XFRM_GSO_SEGMENT 16 102554ef207aSSteffen Klassert #define XFRM_GRO 32 102647ebcc0bSYossi Kuperman #define XFRM_ESP_NO_TRAILER 64 1027f53c7239SSteffen Klassert #define XFRM_DEV_RESUME 128 102854ef207aSSteffen Klassert 102954ef207aSSteffen Klassert __u32 status; 103054ef207aSSteffen Klassert #define CRYPTO_SUCCESS 1 103154ef207aSSteffen Klassert #define CRYPTO_GENERIC_ERROR 2 103254ef207aSSteffen Klassert #define CRYPTO_TRANSPORT_AH_AUTH_FAILED 4 103354ef207aSSteffen Klassert #define CRYPTO_TRANSPORT_ESP_AUTH_FAILED 8 103454ef207aSSteffen Klassert #define CRYPTO_TUNNEL_AH_AUTH_FAILED 16 103554ef207aSSteffen Klassert #define CRYPTO_TUNNEL_ESP_AUTH_FAILED 32 103654ef207aSSteffen Klassert #define CRYPTO_INVALID_PACKET_SYNTAX 64 103754ef207aSSteffen Klassert #define CRYPTO_INVALID_PROTOCOL 128 103854ef207aSSteffen Klassert 103954ef207aSSteffen Klassert __u8 proto; 104054ef207aSSteffen Klassert }; 104154ef207aSSteffen Klassert 1042fd2c3ef7SEric Dumazet struct sec_path { 10431da177e4SLinus Torvalds int len; 104454ef207aSSteffen Klassert int olen; 104554ef207aSSteffen Klassert 1046dbe5b4aaSHerbert Xu struct xfrm_state *xvec[XFRM_MAX_DEPTH]; 104754ef207aSSteffen Klassert struct xfrm_offload ovec[XFRM_MAX_OFFLOAD_DEPTH]; 10481da177e4SLinus Torvalds }; 10491da177e4SLinus Torvalds 10500ca64da1SFlorian Westphal struct sec_path *secpath_set(struct sk_buff *skb); 10511da177e4SLinus Torvalds 10521da177e4SLinus Torvalds static inline void 10531da177e4SLinus Torvalds secpath_reset(struct sk_buff *skb) 10541da177e4SLinus Torvalds { 10551da177e4SLinus Torvalds #ifdef CONFIG_XFRM 10564165079bSFlorian Westphal skb_ext_del(skb, SKB_EXT_SEC_PATH); 10571da177e4SLinus Torvalds #endif 10581da177e4SLinus Torvalds } 10591da177e4SLinus Torvalds 10601da177e4SLinus Torvalds static inline int 10616cc32961SDavid S. Miller xfrm_addr_any(const xfrm_address_t *addr, unsigned short family) 1062a1e59abfSPatrick McHardy { 1063a1e59abfSPatrick McHardy switch (family) { 1064a1e59abfSPatrick McHardy case AF_INET: 1065a1e59abfSPatrick McHardy return addr->a4 == 0; 1066a1e59abfSPatrick McHardy case AF_INET6: 106715e318bdSJiri Benc return ipv6_addr_any(&addr->in6); 1068a1e59abfSPatrick McHardy } 1069a1e59abfSPatrick McHardy return 0; 1070a1e59abfSPatrick McHardy } 1071a1e59abfSPatrick McHardy 1072a1e59abfSPatrick McHardy static inline int 107321eddb5cSDavid S. Miller __xfrm4_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x) 10741da177e4SLinus Torvalds { 10751da177e4SLinus Torvalds return (tmpl->saddr.a4 && 10761da177e4SLinus Torvalds tmpl->saddr.a4 != x->props.saddr.a4); 10771da177e4SLinus Torvalds } 10781da177e4SLinus Torvalds 10791da177e4SLinus Torvalds static inline int 108021eddb5cSDavid S. Miller __xfrm6_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x) 10811da177e4SLinus Torvalds { 10821da177e4SLinus Torvalds return (!ipv6_addr_any((struct in6_addr*)&tmpl->saddr) && 1083ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 !ipv6_addr_equal((struct in6_addr *)&tmpl->saddr, (struct in6_addr*)&x->props.saddr)); 10841da177e4SLinus Torvalds } 10851da177e4SLinus Torvalds 10861da177e4SLinus Torvalds static inline int 108721eddb5cSDavid S. Miller xfrm_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x, unsigned short family) 10881da177e4SLinus Torvalds { 10891da177e4SLinus Torvalds switch (family) { 10901da177e4SLinus Torvalds case AF_INET: 10911da177e4SLinus Torvalds return __xfrm4_state_addr_cmp(tmpl, x); 10921da177e4SLinus Torvalds case AF_INET6: 10931da177e4SLinus Torvalds return __xfrm6_state_addr_cmp(tmpl, x); 10941da177e4SLinus Torvalds } 10951da177e4SLinus Torvalds return !0; 10961da177e4SLinus Torvalds } 10971da177e4SLinus Torvalds 10981da177e4SLinus Torvalds #ifdef CONFIG_XFRM 1099d511337aSJoe Perches int __xfrm_policy_check(struct sock *, int dir, struct sk_buff *skb, 1100d511337aSJoe Perches unsigned short family); 11011da177e4SLinus Torvalds 1102d5422efeSHerbert Xu static inline int __xfrm_policy_check2(struct sock *sk, int dir, 1103d5422efeSHerbert Xu struct sk_buff *skb, 1104d5422efeSHerbert Xu unsigned int family, int reverse) 11051da177e4SLinus Torvalds { 1106f6e1e25dSAlexey Dobriyan struct net *net = dev_net(skb->dev); 1107d5422efeSHerbert Xu int ndir = dir | (reverse ? XFRM_POLICY_MASK + 1 : 0); 1108d5422efeSHerbert Xu 11091da177e4SLinus Torvalds if (sk && sk->sk_policy[XFRM_POLICY_IN]) 1110d5422efeSHerbert Xu return __xfrm_policy_check(sk, ndir, skb, family); 11111da177e4SLinus Torvalds 111226912e37SFlorian Westphal return (!net->xfrm.policy_count[dir] && !secpath_exists(skb)) || 1113adf30907SEric Dumazet (skb_dst(skb)->flags & DST_NOPOLICY) || 1114d5422efeSHerbert Xu __xfrm_policy_check(sk, ndir, skb, family); 1115d5422efeSHerbert Xu } 1116d5422efeSHerbert Xu 1117d5422efeSHerbert Xu static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) 1118d5422efeSHerbert Xu { 1119d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, family, 0); 11201da177e4SLinus Torvalds } 11211da177e4SLinus Torvalds 11221da177e4SLinus Torvalds static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 11231da177e4SLinus Torvalds { 11241da177e4SLinus Torvalds return xfrm_policy_check(sk, dir, skb, AF_INET); 11251da177e4SLinus Torvalds } 11261da177e4SLinus Torvalds 11271da177e4SLinus Torvalds static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 11281da177e4SLinus Torvalds { 11291da177e4SLinus Torvalds return xfrm_policy_check(sk, dir, skb, AF_INET6); 11301da177e4SLinus Torvalds } 11311da177e4SLinus Torvalds 1132d5422efeSHerbert Xu static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir, 1133d5422efeSHerbert Xu struct sk_buff *skb) 1134d5422efeSHerbert Xu { 1135d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, AF_INET, 1); 1136d5422efeSHerbert Xu } 1137d5422efeSHerbert Xu 1138d5422efeSHerbert Xu static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, 1139d5422efeSHerbert Xu struct sk_buff *skb) 1140d5422efeSHerbert Xu { 1141d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, AF_INET6, 1); 1142d5422efeSHerbert Xu } 1143d5422efeSHerbert Xu 1144d511337aSJoe Perches int __xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, 1145d5422efeSHerbert Xu unsigned int family, int reverse); 1146d5422efeSHerbert Xu 1147d5422efeSHerbert Xu static inline int xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, 1148d5422efeSHerbert Xu unsigned int family) 1149d5422efeSHerbert Xu { 1150d5422efeSHerbert Xu return __xfrm_decode_session(skb, fl, family, 0); 1151d5422efeSHerbert Xu } 1152d5422efeSHerbert Xu 1153d5422efeSHerbert Xu static inline int xfrm_decode_session_reverse(struct sk_buff *skb, 1154d5422efeSHerbert Xu struct flowi *fl, 1155d5422efeSHerbert Xu unsigned int family) 1156d5422efeSHerbert Xu { 1157d5422efeSHerbert Xu return __xfrm_decode_session(skb, fl, family, 1); 1158d5422efeSHerbert Xu } 1159d5422efeSHerbert Xu 1160d511337aSJoe Perches int __xfrm_route_forward(struct sk_buff *skb, unsigned short family); 11611da177e4SLinus Torvalds 11621da177e4SLinus Torvalds static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family) 11631da177e4SLinus Torvalds { 116499a66657SAlexey Dobriyan struct net *net = dev_net(skb->dev); 116599a66657SAlexey Dobriyan 116699a66657SAlexey Dobriyan return !net->xfrm.policy_count[XFRM_POLICY_OUT] || 1167adf30907SEric Dumazet (skb_dst(skb)->flags & DST_NOXFRM) || 11681da177e4SLinus Torvalds __xfrm_route_forward(skb, family); 11691da177e4SLinus Torvalds } 11701da177e4SLinus Torvalds 11711da177e4SLinus Torvalds static inline int xfrm4_route_forward(struct sk_buff *skb) 11721da177e4SLinus Torvalds { 11731da177e4SLinus Torvalds return xfrm_route_forward(skb, AF_INET); 11741da177e4SLinus Torvalds } 11751da177e4SLinus Torvalds 11761da177e4SLinus Torvalds static inline int xfrm6_route_forward(struct sk_buff *skb) 11771da177e4SLinus Torvalds { 11781da177e4SLinus Torvalds return xfrm_route_forward(skb, AF_INET6); 11791da177e4SLinus Torvalds } 11801da177e4SLinus Torvalds 1181d188ba86SEric Dumazet int __xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk); 11821da177e4SLinus Torvalds 1183d188ba86SEric Dumazet static inline int xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk) 11841da177e4SLinus Torvalds { 1185d188ba86SEric Dumazet sk->sk_policy[0] = NULL; 1186d188ba86SEric Dumazet sk->sk_policy[1] = NULL; 1187d188ba86SEric Dumazet if (unlikely(osk->sk_policy[0] || osk->sk_policy[1])) 1188d188ba86SEric Dumazet return __xfrm_sk_clone_policy(sk, osk); 11891da177e4SLinus Torvalds return 0; 11901da177e4SLinus Torvalds } 11911da177e4SLinus Torvalds 1192d511337aSJoe Perches int xfrm_policy_delete(struct xfrm_policy *pol, int dir); 11931da177e4SLinus Torvalds 11941da177e4SLinus Torvalds static inline void xfrm_sk_free_policy(struct sock *sk) 11951da177e4SLinus Torvalds { 1196d188ba86SEric Dumazet struct xfrm_policy *pol; 1197d188ba86SEric Dumazet 1198d188ba86SEric Dumazet pol = rcu_dereference_protected(sk->sk_policy[0], 1); 1199d188ba86SEric Dumazet if (unlikely(pol != NULL)) { 1200d188ba86SEric Dumazet xfrm_policy_delete(pol, XFRM_POLICY_MAX); 12011da177e4SLinus Torvalds sk->sk_policy[0] = NULL; 12021da177e4SLinus Torvalds } 1203d188ba86SEric Dumazet pol = rcu_dereference_protected(sk->sk_policy[1], 1); 1204d188ba86SEric Dumazet if (unlikely(pol != NULL)) { 1205d188ba86SEric Dumazet xfrm_policy_delete(pol, XFRM_POLICY_MAX+1); 12061da177e4SLinus Torvalds sk->sk_policy[1] = NULL; 12071da177e4SLinus Torvalds } 12081da177e4SLinus Torvalds } 12091da177e4SLinus Torvalds 12101da177e4SLinus Torvalds #else 12111da177e4SLinus Torvalds 12121da177e4SLinus Torvalds static inline void xfrm_sk_free_policy(struct sock *sk) {} 1213d188ba86SEric Dumazet static inline int xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk) { return 0; } 12141da177e4SLinus Torvalds static inline int xfrm6_route_forward(struct sk_buff *skb) { return 1; } 12151da177e4SLinus Torvalds static inline int xfrm4_route_forward(struct sk_buff *skb) { return 1; } 12161da177e4SLinus Torvalds static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 12171da177e4SLinus Torvalds { 12181da177e4SLinus Torvalds return 1; 12191da177e4SLinus Torvalds } 12201da177e4SLinus Torvalds static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 12211da177e4SLinus Torvalds { 12221da177e4SLinus Torvalds return 1; 12231da177e4SLinus Torvalds } 12241da177e4SLinus Torvalds static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) 12251da177e4SLinus Torvalds { 12261da177e4SLinus Torvalds return 1; 12271da177e4SLinus Torvalds } 1228d5422efeSHerbert Xu static inline int xfrm_decode_session_reverse(struct sk_buff *skb, 1229d5422efeSHerbert Xu struct flowi *fl, 1230d5422efeSHerbert Xu unsigned int family) 1231d5422efeSHerbert Xu { 1232d5422efeSHerbert Xu return -ENOSYS; 1233d5422efeSHerbert Xu } 1234d5422efeSHerbert Xu static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir, 1235d5422efeSHerbert Xu struct sk_buff *skb) 1236d5422efeSHerbert Xu { 1237d5422efeSHerbert Xu return 1; 1238d5422efeSHerbert Xu } 1239d5422efeSHerbert Xu static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, 1240d5422efeSHerbert Xu struct sk_buff *skb) 1241d5422efeSHerbert Xu { 1242d5422efeSHerbert Xu return 1; 1243d5422efeSHerbert Xu } 12441da177e4SLinus Torvalds #endif 12451da177e4SLinus Torvalds 12461da177e4SLinus Torvalds static __inline__ 1247e8a4e377SDavid S. Miller xfrm_address_t *xfrm_flowi_daddr(const struct flowi *fl, unsigned short family) 12481da177e4SLinus Torvalds { 12491da177e4SLinus Torvalds switch (family){ 12501da177e4SLinus Torvalds case AF_INET: 12517e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip4.daddr; 12521da177e4SLinus Torvalds case AF_INET6: 12537e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip6.daddr; 12541da177e4SLinus Torvalds } 12551da177e4SLinus Torvalds return NULL; 12561da177e4SLinus Torvalds } 12571da177e4SLinus Torvalds 12581da177e4SLinus Torvalds static __inline__ 1259e8a4e377SDavid S. Miller xfrm_address_t *xfrm_flowi_saddr(const struct flowi *fl, unsigned short family) 12601da177e4SLinus Torvalds { 12611da177e4SLinus Torvalds switch (family){ 12621da177e4SLinus Torvalds case AF_INET: 12637e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip4.saddr; 12641da177e4SLinus Torvalds case AF_INET6: 12657e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip6.saddr; 12661da177e4SLinus Torvalds } 12671da177e4SLinus Torvalds return NULL; 12681da177e4SLinus Torvalds } 12691da177e4SLinus Torvalds 12709bb182a7SYOSHIFUJI Hideaki static __inline__ 1271e8a4e377SDavid S. Miller void xfrm_flowi_addr_get(const struct flowi *fl, 12729bb182a7SYOSHIFUJI Hideaki xfrm_address_t *saddr, xfrm_address_t *daddr, 12739bb182a7SYOSHIFUJI Hideaki unsigned short family) 12749bb182a7SYOSHIFUJI Hideaki { 12759bb182a7SYOSHIFUJI Hideaki switch(family) { 12769bb182a7SYOSHIFUJI Hideaki case AF_INET: 12777e1dc7b6SDavid S. Miller memcpy(&saddr->a4, &fl->u.ip4.saddr, sizeof(saddr->a4)); 12787e1dc7b6SDavid S. Miller memcpy(&daddr->a4, &fl->u.ip4.daddr, sizeof(daddr->a4)); 12799bb182a7SYOSHIFUJI Hideaki break; 12809bb182a7SYOSHIFUJI Hideaki case AF_INET6: 128115e318bdSJiri Benc saddr->in6 = fl->u.ip6.saddr; 128215e318bdSJiri Benc daddr->in6 = fl->u.ip6.daddr; 12839bb182a7SYOSHIFUJI Hideaki break; 12849bb182a7SYOSHIFUJI Hideaki } 12859bb182a7SYOSHIFUJI Hideaki } 12869bb182a7SYOSHIFUJI Hideaki 12871da177e4SLinus Torvalds static __inline__ int 1288f8848067SDavid S. Miller __xfrm4_state_addr_check(const struct xfrm_state *x, 1289f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr) 12901da177e4SLinus Torvalds { 12911da177e4SLinus Torvalds if (daddr->a4 == x->id.daddr.a4 && 12921da177e4SLinus Torvalds (saddr->a4 == x->props.saddr.a4 || !saddr->a4 || !x->props.saddr.a4)) 12931da177e4SLinus Torvalds return 1; 12941da177e4SLinus Torvalds return 0; 12951da177e4SLinus Torvalds } 12961da177e4SLinus Torvalds 12971da177e4SLinus Torvalds static __inline__ int 1298f8848067SDavid S. Miller __xfrm6_state_addr_check(const struct xfrm_state *x, 1299f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr) 13001da177e4SLinus Torvalds { 1301ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 if (ipv6_addr_equal((struct in6_addr *)daddr, (struct in6_addr *)&x->id.daddr) && 1302ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 (ipv6_addr_equal((struct in6_addr *)saddr, (struct in6_addr *)&x->props.saddr) || 13031da177e4SLinus Torvalds ipv6_addr_any((struct in6_addr *)saddr) || 13041da177e4SLinus Torvalds ipv6_addr_any((struct in6_addr *)&x->props.saddr))) 13051da177e4SLinus Torvalds return 1; 13061da177e4SLinus Torvalds return 0; 13071da177e4SLinus Torvalds } 13081da177e4SLinus Torvalds 13091da177e4SLinus Torvalds static __inline__ int 1310f8848067SDavid S. Miller xfrm_state_addr_check(const struct xfrm_state *x, 1311f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr, 13121da177e4SLinus Torvalds unsigned short family) 13131da177e4SLinus Torvalds { 13141da177e4SLinus Torvalds switch (family) { 13151da177e4SLinus Torvalds case AF_INET: 13161da177e4SLinus Torvalds return __xfrm4_state_addr_check(x, daddr, saddr); 13171da177e4SLinus Torvalds case AF_INET6: 13181da177e4SLinus Torvalds return __xfrm6_state_addr_check(x, daddr, saddr); 13191da177e4SLinus Torvalds } 13201da177e4SLinus Torvalds return 0; 13211da177e4SLinus Torvalds } 13221da177e4SLinus Torvalds 1323e53820deSMasahide NAKAMURA static __inline__ int 1324f8848067SDavid S. Miller xfrm_state_addr_flow_check(const struct xfrm_state *x, const struct flowi *fl, 1325e53820deSMasahide NAKAMURA unsigned short family) 1326e53820deSMasahide NAKAMURA { 1327e53820deSMasahide NAKAMURA switch (family) { 1328e53820deSMasahide NAKAMURA case AF_INET: 1329e53820deSMasahide NAKAMURA return __xfrm4_state_addr_check(x, 13307e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip4.daddr, 13317e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip4.saddr); 1332e53820deSMasahide NAKAMURA case AF_INET6: 1333e53820deSMasahide NAKAMURA return __xfrm6_state_addr_check(x, 13347e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip6.daddr, 13357e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip6.saddr); 1336e53820deSMasahide NAKAMURA } 1337e53820deSMasahide NAKAMURA return 0; 1338e53820deSMasahide NAKAMURA } 1339e53820deSMasahide NAKAMURA 1340f8848067SDavid S. Miller static inline int xfrm_state_kern(const struct xfrm_state *x) 13411da177e4SLinus Torvalds { 13421da177e4SLinus Torvalds return atomic_read(&x->tunnel_users); 13431da177e4SLinus Torvalds } 13441da177e4SLinus Torvalds 13455794708fSMasahide NAKAMURA static inline int xfrm_id_proto_match(u8 proto, u8 userproto) 13465794708fSMasahide NAKAMURA { 1347dc00a525SMasahide NAKAMURA return (!userproto || proto == userproto || 1348dc00a525SMasahide NAKAMURA (userproto == IPSEC_PROTO_ANY && (proto == IPPROTO_AH || 1349dc00a525SMasahide NAKAMURA proto == IPPROTO_ESP || 1350dc00a525SMasahide NAKAMURA proto == IPPROTO_COMP))); 13515794708fSMasahide NAKAMURA } 13525794708fSMasahide NAKAMURA 13531da177e4SLinus Torvalds /* 13541da177e4SLinus Torvalds * xfrm algorithm information 13551da177e4SLinus Torvalds */ 13561a6509d9SHerbert Xu struct xfrm_algo_aead_info { 1357165ecc63SHerbert Xu char *geniv; 13581a6509d9SHerbert Xu u16 icv_truncbits; 13591a6509d9SHerbert Xu }; 13601a6509d9SHerbert Xu 13611da177e4SLinus Torvalds struct xfrm_algo_auth_info { 13621da177e4SLinus Torvalds u16 icv_truncbits; 13631da177e4SLinus Torvalds u16 icv_fullbits; 13641da177e4SLinus Torvalds }; 13651da177e4SLinus Torvalds 13661da177e4SLinus Torvalds struct xfrm_algo_encr_info { 1367165ecc63SHerbert Xu char *geniv; 13681da177e4SLinus Torvalds u16 blockbits; 13691da177e4SLinus Torvalds u16 defkeybits; 13701da177e4SLinus Torvalds }; 13711da177e4SLinus Torvalds 13721da177e4SLinus Torvalds struct xfrm_algo_comp_info { 13731da177e4SLinus Torvalds u16 threshold; 13741da177e4SLinus Torvalds }; 13751da177e4SLinus Torvalds 13761da177e4SLinus Torvalds struct xfrm_algo_desc { 13771da177e4SLinus Torvalds char *name; 137804ff1260SHerbert Xu char *compat; 13791da177e4SLinus Torvalds u8 available:1; 13807e50f84cSJussi Kivilinna u8 pfkey_supported:1; 13811da177e4SLinus Torvalds union { 13821a6509d9SHerbert Xu struct xfrm_algo_aead_info aead; 13831da177e4SLinus Torvalds struct xfrm_algo_auth_info auth; 13841da177e4SLinus Torvalds struct xfrm_algo_encr_info encr; 13851da177e4SLinus Torvalds struct xfrm_algo_comp_info comp; 13861da177e4SLinus Torvalds } uinfo; 13871da177e4SLinus Torvalds struct sadb_alg desc; 13881da177e4SLinus Torvalds }; 13891da177e4SLinus Torvalds 13903328715eSSteffen Klassert /* XFRM protocol handlers. */ 13913328715eSSteffen Klassert struct xfrm4_protocol { 13923328715eSSteffen Klassert int (*handler)(struct sk_buff *skb); 13933328715eSSteffen Klassert int (*input_handler)(struct sk_buff *skb, int nexthdr, __be32 spi, 13943328715eSSteffen Klassert int encap_type); 13953328715eSSteffen Klassert int (*cb_handler)(struct sk_buff *skb, int err); 13963328715eSSteffen Klassert int (*err_handler)(struct sk_buff *skb, u32 info); 13973328715eSSteffen Klassert 13983328715eSSteffen Klassert struct xfrm4_protocol __rcu *next; 13993328715eSSteffen Klassert int priority; 14003328715eSSteffen Klassert }; 14013328715eSSteffen Klassert 14027e14ea15SSteffen Klassert struct xfrm6_protocol { 14037e14ea15SSteffen Klassert int (*handler)(struct sk_buff *skb); 14047e14ea15SSteffen Klassert int (*cb_handler)(struct sk_buff *skb, int err); 14057e14ea15SSteffen Klassert int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, 14067e14ea15SSteffen Klassert u8 type, u8 code, int offset, __be32 info); 14077e14ea15SSteffen Klassert 14087e14ea15SSteffen Klassert struct xfrm6_protocol __rcu *next; 14097e14ea15SSteffen Klassert int priority; 14107e14ea15SSteffen Klassert }; 14117e14ea15SSteffen Klassert 14121da177e4SLinus Torvalds /* XFRM tunnel handlers. */ 14131da177e4SLinus Torvalds struct xfrm_tunnel { 14141da177e4SLinus Torvalds int (*handler)(struct sk_buff *skb); 1415a6337463Sjamal int (*err_handler)(struct sk_buff *skb, u32 info); 1416d2acc347SHerbert Xu 1417b33eab08SEric Dumazet struct xfrm_tunnel __rcu *next; 1418d2acc347SHerbert Xu int priority; 14191da177e4SLinus Torvalds }; 14201da177e4SLinus Torvalds 14211da177e4SLinus Torvalds struct xfrm6_tunnel { 1422d2acc347SHerbert Xu int (*handler)(struct sk_buff *skb); 1423d2acc347SHerbert Xu int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, 1424d5fdd6baSBrian Haley u8 type, u8 code, int offset, __be32 info); 14256f0bcf15SEric Dumazet struct xfrm6_tunnel __rcu *next; 1426d2acc347SHerbert Xu int priority; 14271da177e4SLinus Torvalds }; 14281da177e4SLinus Torvalds 1429d511337aSJoe Perches void xfrm_init(void); 1430d511337aSJoe Perches void xfrm4_init(void); 1431d511337aSJoe Perches int xfrm_state_init(struct net *net); 1432d511337aSJoe Perches void xfrm_state_fini(struct net *net); 1433d511337aSJoe Perches void xfrm4_state_init(void); 14342f32b51bSSteffen Klassert void xfrm4_protocol_init(void); 1435c35b7e72SDaniel Lezcano #ifdef CONFIG_XFRM 1436d511337aSJoe Perches int xfrm6_init(void); 1437d511337aSJoe Perches void xfrm6_fini(void); 1438d511337aSJoe Perches int xfrm6_state_init(void); 1439d511337aSJoe Perches void xfrm6_state_fini(void); 14407e14ea15SSteffen Klassert int xfrm6_protocol_init(void); 14417e14ea15SSteffen Klassert void xfrm6_protocol_fini(void); 1442c35b7e72SDaniel Lezcano #else 1443c35b7e72SDaniel Lezcano static inline int xfrm6_init(void) 1444c35b7e72SDaniel Lezcano { 1445c35b7e72SDaniel Lezcano return 0; 1446c35b7e72SDaniel Lezcano } 1447c35b7e72SDaniel Lezcano static inline void xfrm6_fini(void) 1448c35b7e72SDaniel Lezcano { 1449c35b7e72SDaniel Lezcano ; 1450c35b7e72SDaniel Lezcano } 1451c35b7e72SDaniel Lezcano #endif 14521da177e4SLinus Torvalds 1453558f82efSMasahide NAKAMURA #ifdef CONFIG_XFRM_STATISTICS 1454d511337aSJoe Perches int xfrm_proc_init(struct net *net); 1455d511337aSJoe Perches void xfrm_proc_fini(struct net *net); 1456558f82efSMasahide NAKAMURA #endif 1457558f82efSMasahide NAKAMURA 1458d511337aSJoe Perches int xfrm_sysctl_init(struct net *net); 1459b27aeadbSAlexey Dobriyan #ifdef CONFIG_SYSCTL 1460d511337aSJoe Perches void xfrm_sysctl_fini(struct net *net); 1461b27aeadbSAlexey Dobriyan #else 1462b27aeadbSAlexey Dobriyan static inline void xfrm_sysctl_fini(struct net *net) 1463b27aeadbSAlexey Dobriyan { 1464b27aeadbSAlexey Dobriyan } 1465b27aeadbSAlexey Dobriyan #endif 1466b27aeadbSAlexey Dobriyan 1467d3623099SNicolas Dichtel void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto, 1468870a2df4SNicolas Dichtel struct xfrm_address_filter *filter); 1469d511337aSJoe Perches int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk, 14704c563f76STimo Teras int (*func)(struct xfrm_state *, int, void*), void *); 1471283bc9f3SFan Du void xfrm_state_walk_done(struct xfrm_state_walk *walk, struct net *net); 1472d511337aSJoe Perches struct xfrm_state *xfrm_state_alloc(struct net *net); 14734a135e53SMathias Krause void xfrm_state_free(struct xfrm_state *x); 1474d511337aSJoe Perches struct xfrm_state *xfrm_state_find(const xfrm_address_t *daddr, 147533765d06SDavid S. Miller const xfrm_address_t *saddr, 1476b520e9f6SDavid S. Miller const struct flowi *fl, 1477b520e9f6SDavid S. Miller struct xfrm_tmpl *tmpl, 14781da177e4SLinus Torvalds struct xfrm_policy *pol, int *err, 1479bc56b334SBenedict Wong unsigned short family, u32 if_id); 14807e652640SSteffen Klassert struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark, u32 if_id, 14815447c5e4SAlexey Dobriyan xfrm_address_t *daddr, 1482628529b6SJamal Hadi Salim xfrm_address_t *saddr, 1483628529b6SJamal Hadi Salim unsigned short family, 1484628529b6SJamal Hadi Salim u8 mode, u8 proto, u32 reqid); 1485c454997eSFan Du struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi, 1486c454997eSFan Du unsigned short family); 1487d511337aSJoe Perches int xfrm_state_check_expire(struct xfrm_state *x); 1488d511337aSJoe Perches void xfrm_state_insert(struct xfrm_state *x); 1489d511337aSJoe Perches int xfrm_state_add(struct xfrm_state *x); 1490d511337aSJoe Perches int xfrm_state_update(struct xfrm_state *x); 1491d511337aSJoe Perches struct xfrm_state *xfrm_state_lookup(struct net *net, u32 mark, 1492a70486f0SDavid S. Miller const xfrm_address_t *daddr, __be32 spi, 1493bd55775cSJamal Hadi Salim u8 proto, unsigned short family); 1494d511337aSJoe Perches struct xfrm_state *xfrm_state_lookup_byaddr(struct net *net, u32 mark, 1495a70486f0SDavid S. Miller const xfrm_address_t *daddr, 1496a70486f0SDavid S. Miller const xfrm_address_t *saddr, 1497bd55775cSJamal Hadi Salim u8 proto, 1498bd55775cSJamal Hadi Salim unsigned short family); 149941a49cc3SMasahide NAKAMURA #ifdef CONFIG_XFRM_SUB_POLICY 1500d511337aSJoe Perches int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n, 1501283bc9f3SFan Du unsigned short family, struct net *net); 1502d511337aSJoe Perches int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n, 1503d511337aSJoe Perches unsigned short family); 150441a49cc3SMasahide NAKAMURA #else 150541a49cc3SMasahide NAKAMURA static inline int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, 1506283bc9f3SFan Du int n, unsigned short family, struct net *net) 150741a49cc3SMasahide NAKAMURA { 150841a49cc3SMasahide NAKAMURA return -ENOSYS; 150941a49cc3SMasahide NAKAMURA } 151041a49cc3SMasahide NAKAMURA 151141a49cc3SMasahide NAKAMURA static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, 151241a49cc3SMasahide NAKAMURA int n, unsigned short family) 151341a49cc3SMasahide NAKAMURA { 151441a49cc3SMasahide NAKAMURA return -ENOSYS; 151541a49cc3SMasahide NAKAMURA } 151641a49cc3SMasahide NAKAMURA #endif 1517af11e316SJamal Hadi Salim 1518af11e316SJamal Hadi Salim struct xfrmk_sadinfo { 1519af11e316SJamal Hadi Salim u32 sadhcnt; /* current hash bkts */ 1520af11e316SJamal Hadi Salim u32 sadhmcnt; /* max allowed hash bkts */ 1521af11e316SJamal Hadi Salim u32 sadcnt; /* current running count */ 1522af11e316SJamal Hadi Salim }; 1523af11e316SJamal Hadi Salim 15245a6d3416SJamal Hadi Salim struct xfrmk_spdinfo { 15255a6d3416SJamal Hadi Salim u32 incnt; 15265a6d3416SJamal Hadi Salim u32 outcnt; 15275a6d3416SJamal Hadi Salim u32 fwdcnt; 15285a6d3416SJamal Hadi Salim u32 inscnt; 15295a6d3416SJamal Hadi Salim u32 outscnt; 15305a6d3416SJamal Hadi Salim u32 fwdscnt; 15315a6d3416SJamal Hadi Salim u32 spdhcnt; 15325a6d3416SJamal Hadi Salim u32 spdhmcnt; 15335a6d3416SJamal Hadi Salim }; 15345a6d3416SJamal Hadi Salim 1535d511337aSJoe Perches struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq); 1536d511337aSJoe Perches int xfrm_state_delete(struct xfrm_state *x); 1537f75a2804SCong Wang int xfrm_state_flush(struct net *net, u8 proto, bool task_valid, bool sync); 1538d77e38e6SSteffen Klassert int xfrm_dev_state_flush(struct net *net, struct net_device *dev, bool task_valid); 1539d511337aSJoe Perches void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si); 1540d511337aSJoe Perches void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si); 1541d511337aSJoe Perches u32 xfrm_replay_seqhi(struct xfrm_state *x, __be32 net_seq); 1542d511337aSJoe Perches int xfrm_init_replay(struct xfrm_state *x); 1543d511337aSJoe Perches int xfrm_state_mtu(struct xfrm_state *x, int mtu); 1544ffdb5211SIlan Tayari int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload); 1545d511337aSJoe Perches int xfrm_init_state(struct xfrm_state *x); 1546d511337aSJoe Perches int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type); 1547d511337aSJoe Perches int xfrm_input_resume(struct sk_buff *skb, int nexthdr); 1548acf568eeSHerbert Xu int xfrm_trans_queue(struct sk_buff *skb, 1549acf568eeSHerbert Xu int (*finish)(struct net *, struct sock *, 1550acf568eeSHerbert Xu struct sk_buff *)); 1551d511337aSJoe Perches int xfrm_output_resume(struct sk_buff *skb, int err); 15527026b1ddSDavid Miller int xfrm_output(struct sock *sk, struct sk_buff *skb); 15530c620e97SFlorian Westphal 15540c620e97SFlorian Westphal #if IS_ENABLED(CONFIG_NET_PKTGEN) 15550c620e97SFlorian Westphal int pktgen_xfrm_outer_mode_output(struct xfrm_state *x, struct sk_buff *skb); 15560c620e97SFlorian Westphal #endif 15570c620e97SFlorian Westphal 1558d511337aSJoe Perches void xfrm_local_error(struct sk_buff *skb, int mtu); 1559d511337aSJoe Perches int xfrm4_extract_header(struct sk_buff *skb); 1560d511337aSJoe Perches int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb); 1561d511337aSJoe Perches int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi, 1562716062fdSHerbert Xu int encap_type); 1563d511337aSJoe Perches int xfrm4_transport_finish(struct sk_buff *skb, int async); 1564d511337aSJoe Perches int xfrm4_rcv(struct sk_buff *skb); 15651e295370SSteffen Klassert int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq); 1566c4541b41SHerbert Xu 1567c4541b41SHerbert Xu static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi) 1568c4541b41SHerbert Xu { 156970be6c91SSteffen Klassert XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4 = NULL; 15703328715eSSteffen Klassert XFRM_SPI_SKB_CB(skb)->family = AF_INET; 15713328715eSSteffen Klassert XFRM_SPI_SKB_CB(skb)->daddroff = offsetof(struct iphdr, daddr); 15723328715eSSteffen Klassert return xfrm_input(skb, nexthdr, spi, 0); 1573c4541b41SHerbert Xu } 1574c4541b41SHerbert Xu 1575d511337aSJoe Perches int xfrm4_extract_output(struct xfrm_state *x, struct sk_buff *skb); 1576ede2059dSEric W. Biederman int xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb); 15777026b1ddSDavid Miller int xfrm4_output_finish(struct sock *sk, struct sk_buff *skb); 15783328715eSSteffen Klassert int xfrm4_rcv_cb(struct sk_buff *skb, u8 protocol, int err); 15793328715eSSteffen Klassert int xfrm4_protocol_register(struct xfrm4_protocol *handler, unsigned char protocol); 15803328715eSSteffen Klassert int xfrm4_protocol_deregister(struct xfrm4_protocol *handler, unsigned char protocol); 1581d511337aSJoe Perches int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family); 1582d511337aSJoe Perches int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family); 1583d511337aSJoe Perches void xfrm4_local_error(struct sk_buff *skb, u32 mtu); 1584d511337aSJoe Perches int xfrm6_extract_header(struct sk_buff *skb); 1585d511337aSJoe Perches int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb); 158663c43787SNicolas Dichtel int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi, 158763c43787SNicolas Dichtel struct ip6_tnl *t); 1588d511337aSJoe Perches int xfrm6_transport_finish(struct sk_buff *skb, int async); 158963c43787SNicolas Dichtel int xfrm6_rcv_tnl(struct sk_buff *skb, struct ip6_tnl *t); 1590d511337aSJoe Perches int xfrm6_rcv(struct sk_buff *skb); 1591d511337aSJoe Perches int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr, 1592fbd9a5b4SMasahide NAKAMURA xfrm_address_t *saddr, u8 proto); 15937b77d161SDavid S. Miller void xfrm6_local_error(struct sk_buff *skb, u32 mtu); 15947e14ea15SSteffen Klassert int xfrm6_rcv_cb(struct sk_buff *skb, u8 protocol, int err); 15957e14ea15SSteffen Klassert int xfrm6_protocol_register(struct xfrm6_protocol *handler, unsigned char protocol); 15967e14ea15SSteffen Klassert int xfrm6_protocol_deregister(struct xfrm6_protocol *handler, unsigned char protocol); 1597d511337aSJoe Perches int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family); 15987b77d161SDavid S. Miller int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family); 1599d511337aSJoe Perches __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr); 1600d511337aSJoe Perches __be32 xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr); 1601d511337aSJoe Perches int xfrm6_extract_output(struct xfrm_state *x, struct sk_buff *skb); 1602ede2059dSEric W. Biederman int xfrm6_output(struct net *net, struct sock *sk, struct sk_buff *skb); 16037026b1ddSDavid Miller int xfrm6_output_finish(struct sock *sk, struct sk_buff *skb); 1604d511337aSJoe Perches int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb, 1605aee5adb4SMasahide NAKAMURA u8 **prevhdr); 16061da177e4SLinus Torvalds 16071da177e4SLinus Torvalds #ifdef CONFIG_XFRM 1608d511337aSJoe Perches int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb); 1609d511337aSJoe Perches int xfrm_user_policy(struct sock *sk, int optname, 1610d511337aSJoe Perches u8 __user *optval, int optlen); 16111da177e4SLinus Torvalds #else 16121da177e4SLinus Torvalds static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen) 16131da177e4SLinus Torvalds { 16141da177e4SLinus Torvalds return -ENOPROTOOPT; 16151da177e4SLinus Torvalds } 16161da177e4SLinus Torvalds 1617067b207bSJames Chapman static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb) 16181da177e4SLinus Torvalds { 16191da177e4SLinus Torvalds /* should not happen */ 16201da177e4SLinus Torvalds kfree_skb(skb); 16211da177e4SLinus Torvalds return 0; 16221da177e4SLinus Torvalds } 16231da177e4SLinus Torvalds #endif 16241da177e4SLinus Torvalds 1625d77e38e6SSteffen Klassert struct dst_entry *__xfrm_dst_lookup(struct net *net, int tos, int oif, 1626d77e38e6SSteffen Klassert const xfrm_address_t *saddr, 1627d77e38e6SSteffen Klassert const xfrm_address_t *daddr, 1628077fbac4SLorenzo Colitti int family, u32 mark); 1629d77e38e6SSteffen Klassert 16300331b1f3SAlexey Dobriyan struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp); 16314c563f76STimo Teras 1632d511337aSJoe Perches void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type); 1633d511337aSJoe Perches int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk, 1634d511337aSJoe Perches int (*func)(struct xfrm_policy *, int, int, void*), 1635d511337aSJoe Perches void *); 1636283bc9f3SFan Du void xfrm_policy_walk_done(struct xfrm_policy_walk *walk, struct net *net); 16371da177e4SLinus Torvalds int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl); 16387e652640SSteffen Klassert struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark, u32 if_id, 16398ca2e93bSJamal Hadi Salim u8 type, int dir, 16404e81bb83SMasahide NAKAMURA struct xfrm_selector *sel, 1641ef41aaa0SEric Paris struct xfrm_sec_ctx *ctx, int delete, 1642ef41aaa0SEric Paris int *err); 16437e652640SSteffen Klassert struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u32 if_id, u8, 16447e652640SSteffen Klassert int dir, u32 id, int delete, int *err); 16452e71029eSTetsuo Handa int xfrm_policy_flush(struct net *net, u8 type, bool task_valid); 1646880a6fabSChristophe Gouault void xfrm_policy_hash_rebuild(struct net *net); 16471da177e4SLinus Torvalds u32 xfrm_get_acqseq(void); 1648776e9dd9SFan Du int verify_spi_info(u8 proto, u32 min, u32 max); 1649d511337aSJoe Perches int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi); 1650e473fcb4SMathias Krause struct xfrm_state *xfrm_find_acq(struct net *net, const struct xfrm_mark *mark, 16517e652640SSteffen Klassert u8 mode, u32 reqid, u32 if_id, u8 proto, 1652a70486f0SDavid S. Miller const xfrm_address_t *daddr, 1653a70486f0SDavid S. Miller const xfrm_address_t *saddr, int create, 1654bd55775cSJamal Hadi Salim unsigned short family); 1655d511337aSJoe Perches int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol); 16561da177e4SLinus Torvalds 165780c9abaaSShinta Sugimoto #ifdef CONFIG_XFRM_MIGRATE 1658d511337aSJoe Perches int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, 1659183cad12SDavid S. Miller const struct xfrm_migrate *m, int num_bundles, 16608bafd730SAntony Antony const struct xfrm_kmaddress *k, 16618bafd730SAntony Antony const struct xfrm_encap_tmpl *encap); 1662283bc9f3SFan Du struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net); 1663d511337aSJoe Perches struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, 16644ab47d47SAntony Antony struct xfrm_migrate *m, 16654ab47d47SAntony Antony struct xfrm_encap_tmpl *encap); 1666d511337aSJoe Perches int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, 166713c1d189SArnaud Ebalard struct xfrm_migrate *m, int num_bundles, 16684ab47d47SAntony Antony struct xfrm_kmaddress *k, struct net *net, 16694ab47d47SAntony Antony struct xfrm_encap_tmpl *encap); 167080c9abaaSShinta Sugimoto #endif 167180c9abaaSShinta Sugimoto 1672d511337aSJoe Perches int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport); 1673d511337aSJoe Perches void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 portid); 1674d511337aSJoe Perches int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, 1675d511337aSJoe Perches xfrm_address_t *addr); 16761da177e4SLinus Torvalds 1677d511337aSJoe Perches void xfrm_input_init(void); 1678d511337aSJoe Perches int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq); 16791da177e4SLinus Torvalds 1680d511337aSJoe Perches void xfrm_probe_algs(void); 1681d511337aSJoe Perches int xfrm_count_pfkey_auth_supported(void); 1682d511337aSJoe Perches int xfrm_count_pfkey_enc_supported(void); 1683d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx); 1684d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx); 1685d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id); 1686d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id); 1687d511337aSJoe Perches struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id); 1688d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byname(const char *name, int probe); 1689d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe); 1690d511337aSJoe Perches struct xfrm_algo_desc *xfrm_calg_get_byname(const char *name, int probe); 1691d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aead_get_byname(const char *name, int icv_len, 16921a6509d9SHerbert Xu int probe); 16931da177e4SLinus Torvalds 1694ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 static inline bool xfrm6_addr_equal(const xfrm_address_t *a, 1695ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 const xfrm_address_t *b) 1696ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 { 1697ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 return ipv6_addr_equal((const struct in6_addr *)a, 1698ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 (const struct in6_addr *)b); 1699ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 } 1700ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 170170e94e66SYOSHIFUJI Hideaki / 吉藤英明 static inline bool xfrm_addr_equal(const xfrm_address_t *a, 170270e94e66SYOSHIFUJI Hideaki / 吉藤英明 const xfrm_address_t *b, 170370e94e66SYOSHIFUJI Hideaki / 吉藤英明 sa_family_t family) 170470e94e66SYOSHIFUJI Hideaki / 吉藤英明 { 170570e94e66SYOSHIFUJI Hideaki / 吉藤英明 switch (family) { 170670e94e66SYOSHIFUJI Hideaki / 吉藤英明 default: 170770e94e66SYOSHIFUJI Hideaki / 吉藤英明 case AF_INET: 170870e94e66SYOSHIFUJI Hideaki / 吉藤英明 return ((__force u32)a->a4 ^ (__force u32)b->a4) == 0; 170970e94e66SYOSHIFUJI Hideaki / 吉藤英明 case AF_INET6: 171070e94e66SYOSHIFUJI Hideaki / 吉藤英明 return xfrm6_addr_equal(a, b); 171170e94e66SYOSHIFUJI Hideaki / 吉藤英明 } 171270e94e66SYOSHIFUJI Hideaki / 吉藤英明 } 171370e94e66SYOSHIFUJI Hideaki / 吉藤英明 171477d8d7a6SHerbert Xu static inline int xfrm_policy_id2dir(u32 index) 171577d8d7a6SHerbert Xu { 171677d8d7a6SHerbert Xu return index & 7; 171777d8d7a6SHerbert Xu } 171877d8d7a6SHerbert Xu 1719a6483b79SAlexey Dobriyan #ifdef CONFIG_XFRM 1720a6483b79SAlexey Dobriyan static inline int xfrm_aevent_is_on(struct net *net) 1721f8cd5488SJamal Hadi Salim { 1722be33690dSPatrick McHardy struct sock *nlsk; 1723be33690dSPatrick McHardy int ret = 0; 1724be33690dSPatrick McHardy 1725be33690dSPatrick McHardy rcu_read_lock(); 1726a6483b79SAlexey Dobriyan nlsk = rcu_dereference(net->xfrm.nlsk); 1727be33690dSPatrick McHardy if (nlsk) 1728be33690dSPatrick McHardy ret = netlink_has_listeners(nlsk, XFRMNLGRP_AEVENTS); 1729be33690dSPatrick McHardy rcu_read_unlock(); 1730be33690dSPatrick McHardy return ret; 1731f8cd5488SJamal Hadi Salim } 17320f24558eSHoria Geanta 17330f24558eSHoria Geanta static inline int xfrm_acquire_is_on(struct net *net) 17340f24558eSHoria Geanta { 17350f24558eSHoria Geanta struct sock *nlsk; 17360f24558eSHoria Geanta int ret = 0; 17370f24558eSHoria Geanta 17380f24558eSHoria Geanta rcu_read_lock(); 17390f24558eSHoria Geanta nlsk = rcu_dereference(net->xfrm.nlsk); 17400f24558eSHoria Geanta if (nlsk) 17410f24558eSHoria Geanta ret = netlink_has_listeners(nlsk, XFRMNLGRP_ACQUIRE); 17420f24558eSHoria Geanta rcu_read_unlock(); 17430f24558eSHoria Geanta 17440f24558eSHoria Geanta return ret; 17450f24558eSHoria Geanta } 1746a6483b79SAlexey Dobriyan #endif 1747f8cd5488SJamal Hadi Salim 1748373b8eebSAlexey Dobriyan static inline unsigned int aead_len(struct xfrm_algo_aead *alg) 1749ee5c2317SSteffen Klassert { 1750ee5c2317SSteffen Klassert return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 1751ee5c2317SSteffen Klassert } 1752ee5c2317SSteffen Klassert 175306cd22f8SAlexey Dobriyan static inline unsigned int xfrm_alg_len(const struct xfrm_algo *alg) 17540f99be0dSEric Dumazet { 17550f99be0dSEric Dumazet return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 17560f99be0dSEric Dumazet } 17570f99be0dSEric Dumazet 17581bd963a7SAlexey Dobriyan static inline unsigned int xfrm_alg_auth_len(const struct xfrm_algo_auth *alg) 17594447bb33SMartin Willi { 17604447bb33SMartin Willi return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 17614447bb33SMartin Willi } 17624447bb33SMartin Willi 17635e708e47SAlexey Dobriyan static inline unsigned int xfrm_replay_state_esn_len(struct xfrm_replay_state_esn *replay_esn) 17649736acf3SSteffen Klassert { 17659736acf3SSteffen Klassert return sizeof(*replay_esn) + replay_esn->bmp_len * sizeof(__u32); 17669736acf3SSteffen Klassert } 17679736acf3SSteffen Klassert 176880c9abaaSShinta Sugimoto #ifdef CONFIG_XFRM_MIGRATE 1769af2f464eSSteffen Klassert static inline int xfrm_replay_clone(struct xfrm_state *x, 1770af2f464eSSteffen Klassert struct xfrm_state *orig) 1771af2f464eSSteffen Klassert { 1772af2f464eSSteffen Klassert x->replay_esn = kzalloc(xfrm_replay_state_esn_len(orig->replay_esn), 1773af2f464eSSteffen Klassert GFP_KERNEL); 1774af2f464eSSteffen Klassert if (!x->replay_esn) 1775af2f464eSSteffen Klassert return -ENOMEM; 1776af2f464eSSteffen Klassert 1777af2f464eSSteffen Klassert x->replay_esn->bmp_len = orig->replay_esn->bmp_len; 1778af2f464eSSteffen Klassert x->replay_esn->replay_window = orig->replay_esn->replay_window; 1779af2f464eSSteffen Klassert 1780af2f464eSSteffen Klassert x->preplay_esn = kmemdup(x->replay_esn, 1781af2f464eSSteffen Klassert xfrm_replay_state_esn_len(x->replay_esn), 1782af2f464eSSteffen Klassert GFP_KERNEL); 1783af2f464eSSteffen Klassert if (!x->preplay_esn) { 1784af2f464eSSteffen Klassert kfree(x->replay_esn); 1785af2f464eSSteffen Klassert return -ENOMEM; 1786af2f464eSSteffen Klassert } 1787af2f464eSSteffen Klassert 1788af2f464eSSteffen Klassert return 0; 1789af2f464eSSteffen Klassert } 1790af2f464eSSteffen Klassert 1791ee5c2317SSteffen Klassert static inline struct xfrm_algo_aead *xfrm_algo_aead_clone(struct xfrm_algo_aead *orig) 1792ee5c2317SSteffen Klassert { 1793ee5c2317SSteffen Klassert return kmemdup(orig, aead_len(orig), GFP_KERNEL); 1794ee5c2317SSteffen Klassert } 1795ee5c2317SSteffen Klassert 1796ee5c2317SSteffen Klassert 179780c9abaaSShinta Sugimoto static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig) 179880c9abaaSShinta Sugimoto { 17990f99be0dSEric Dumazet return kmemdup(orig, xfrm_alg_len(orig), GFP_KERNEL); 180080c9abaaSShinta Sugimoto } 180180c9abaaSShinta Sugimoto 18024447bb33SMartin Willi static inline struct xfrm_algo_auth *xfrm_algo_auth_clone(struct xfrm_algo_auth *orig) 18034447bb33SMartin Willi { 18044447bb33SMartin Willi return kmemdup(orig, xfrm_alg_auth_len(orig), GFP_KERNEL); 18054447bb33SMartin Willi } 18064447bb33SMartin Willi 180780c9abaaSShinta Sugimoto static inline void xfrm_states_put(struct xfrm_state **states, int n) 180880c9abaaSShinta Sugimoto { 180980c9abaaSShinta Sugimoto int i; 181080c9abaaSShinta Sugimoto for (i = 0; i < n; i++) 181180c9abaaSShinta Sugimoto xfrm_state_put(*(states + i)); 181280c9abaaSShinta Sugimoto } 181380c9abaaSShinta Sugimoto 181480c9abaaSShinta Sugimoto static inline void xfrm_states_delete(struct xfrm_state **states, int n) 181580c9abaaSShinta Sugimoto { 181680c9abaaSShinta Sugimoto int i; 181780c9abaaSShinta Sugimoto for (i = 0; i < n; i++) 181880c9abaaSShinta Sugimoto xfrm_state_delete(*(states + i)); 181980c9abaaSShinta Sugimoto } 182080c9abaaSShinta Sugimoto #endif 1821f8cd5488SJamal Hadi Salim 1822def8b4faSAlexey Dobriyan #ifdef CONFIG_XFRM 182300501121SHerbert Xu static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb) 182400501121SHerbert Xu { 18252294be0fSFlorian Westphal struct sec_path *sp = skb_sec_path(skb); 18262294be0fSFlorian Westphal 18272294be0fSFlorian Westphal return sp->xvec[sp->len - 1]; 182800501121SHerbert Xu } 1829f53c7239SSteffen Klassert #endif 1830f53c7239SSteffen Klassert 183154ef207aSSteffen Klassert static inline struct xfrm_offload *xfrm_offload(struct sk_buff *skb) 183254ef207aSSteffen Klassert { 1833f53c7239SSteffen Klassert #ifdef CONFIG_XFRM 18342294be0fSFlorian Westphal struct sec_path *sp = skb_sec_path(skb); 183554ef207aSSteffen Klassert 183654ef207aSSteffen Klassert if (!sp || !sp->olen || sp->len != sp->olen) 183754ef207aSSteffen Klassert return NULL; 183854ef207aSSteffen Klassert 183954ef207aSSteffen Klassert return &sp->ovec[sp->olen - 1]; 1840f53c7239SSteffen Klassert #else 1841f53c7239SSteffen Klassert return NULL; 1842def8b4faSAlexey Dobriyan #endif 1843f53c7239SSteffen Klassert } 184400501121SHerbert Xu 1845e9a441b6SKirill Tkhai void __init xfrm_dev_init(void); 1846b81f884aSHangbin Liu 1847b81f884aSHangbin Liu #ifdef CONFIG_XFRM_OFFLOAD 1848f53c7239SSteffen Klassert void xfrm_dev_resume(struct sk_buff *skb); 1849f53c7239SSteffen Klassert void xfrm_dev_backlog(struct softnet_data *sd); 1850f53c7239SSteffen Klassert struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features, bool *again); 1851d77e38e6SSteffen Klassert int xfrm_dev_state_add(struct net *net, struct xfrm_state *x, 1852d77e38e6SSteffen Klassert struct xfrm_user_offload *xuo); 1853d77e38e6SSteffen Klassert bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x); 1854d77e38e6SSteffen Klassert 185550bd870aSYossef Efraim static inline void xfrm_dev_state_advance_esn(struct xfrm_state *x) 185650bd870aSYossef Efraim { 185750bd870aSYossef Efraim struct xfrm_state_offload *xso = &x->xso; 185850bd870aSYossef Efraim 185950bd870aSYossef Efraim if (xso->dev && xso->dev->xfrmdev_ops->xdo_dev_state_advance_esn) 186050bd870aSYossef Efraim xso->dev->xfrmdev_ops->xdo_dev_state_advance_esn(x); 186150bd870aSYossef Efraim } 186250bd870aSYossef Efraim 1863f70f250aSSteffen Klassert static inline bool xfrm_dst_offload_ok(struct dst_entry *dst) 1864f70f250aSSteffen Klassert { 1865f70f250aSSteffen Klassert struct xfrm_state *x = dst->xfrm; 1866b6ca8bd5SDavid Miller struct xfrm_dst *xdst; 1867f70f250aSSteffen Klassert 1868f70f250aSSteffen Klassert if (!x || !x->type_offload) 1869f70f250aSSteffen Klassert return false; 1870f70f250aSSteffen Klassert 1871b6ca8bd5SDavid Miller xdst = (struct xfrm_dst *) dst; 18722271d519SSteffen Klassert if (!x->xso.offload_handle && !xdst->child->xfrm) 18732271d519SSteffen Klassert return true; 18740f6c480fSDavid Miller if (x->xso.offload_handle && (x->xso.dev == xfrm_dst_path(dst)->dev) && 1875b6ca8bd5SDavid Miller !xdst->child->xfrm) 1876f70f250aSSteffen Klassert return true; 1877f70f250aSSteffen Klassert 1878f70f250aSSteffen Klassert return false; 1879f70f250aSSteffen Klassert } 1880f70f250aSSteffen Klassert 1881d77e38e6SSteffen Klassert static inline void xfrm_dev_state_delete(struct xfrm_state *x) 1882d77e38e6SSteffen Klassert { 1883d77e38e6SSteffen Klassert struct xfrm_state_offload *xso = &x->xso; 1884d77e38e6SSteffen Klassert 1885d77e38e6SSteffen Klassert if (xso->dev) 1886d77e38e6SSteffen Klassert xso->dev->xfrmdev_ops->xdo_dev_state_delete(x); 1887d77e38e6SSteffen Klassert } 1888d77e38e6SSteffen Klassert 1889d77e38e6SSteffen Klassert static inline void xfrm_dev_state_free(struct xfrm_state *x) 1890d77e38e6SSteffen Klassert { 1891d77e38e6SSteffen Klassert struct xfrm_state_offload *xso = &x->xso; 1892d77e38e6SSteffen Klassert struct net_device *dev = xso->dev; 1893d77e38e6SSteffen Klassert 1894d77e38e6SSteffen Klassert if (dev && dev->xfrmdev_ops) { 18957f05b467SShannon Nelson if (dev->xfrmdev_ops->xdo_dev_state_free) 1896d77e38e6SSteffen Klassert dev->xfrmdev_ops->xdo_dev_state_free(x); 1897d77e38e6SSteffen Klassert xso->dev = NULL; 1898d77e38e6SSteffen Klassert dev_put(dev); 1899d77e38e6SSteffen Klassert } 1900d77e38e6SSteffen Klassert } 1901d77e38e6SSteffen Klassert #else 1902f53c7239SSteffen Klassert static inline void xfrm_dev_resume(struct sk_buff *skb) 1903f53c7239SSteffen Klassert { 1904f53c7239SSteffen Klassert } 1905f53c7239SSteffen Klassert 1906f53c7239SSteffen Klassert static inline void xfrm_dev_backlog(struct softnet_data *sd) 1907f53c7239SSteffen Klassert { 1908f53c7239SSteffen Klassert } 1909f53c7239SSteffen Klassert 1910f53c7239SSteffen Klassert static inline struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features, bool *again) 1911f6e27114SSteffen Klassert { 19123dca3f38SSteffen Klassert return skb; 1913f6e27114SSteffen Klassert } 1914f6e27114SSteffen Klassert 1915d77e38e6SSteffen Klassert static inline int xfrm_dev_state_add(struct net *net, struct xfrm_state *x, struct xfrm_user_offload *xuo) 1916d77e38e6SSteffen Klassert { 1917d77e38e6SSteffen Klassert return 0; 1918d77e38e6SSteffen Klassert } 1919d77e38e6SSteffen Klassert 1920d77e38e6SSteffen Klassert static inline void xfrm_dev_state_delete(struct xfrm_state *x) 1921d77e38e6SSteffen Klassert { 1922d77e38e6SSteffen Klassert } 1923d77e38e6SSteffen Klassert 1924d77e38e6SSteffen Klassert static inline void xfrm_dev_state_free(struct xfrm_state *x) 1925d77e38e6SSteffen Klassert { 1926d77e38e6SSteffen Klassert } 1927d77e38e6SSteffen Klassert 1928d77e38e6SSteffen Klassert static inline bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x) 1929d77e38e6SSteffen Klassert { 1930d77e38e6SSteffen Klassert return false; 1931d77e38e6SSteffen Klassert } 1932f70f250aSSteffen Klassert 193350bd870aSYossef Efraim static inline void xfrm_dev_state_advance_esn(struct xfrm_state *x) 193450bd870aSYossef Efraim { 193550bd870aSYossef Efraim } 193650bd870aSYossef Efraim 1937f70f250aSSteffen Klassert static inline bool xfrm_dst_offload_ok(struct dst_entry *dst) 1938f70f250aSSteffen Klassert { 1939f70f250aSSteffen Klassert return false; 1940f70f250aSSteffen Klassert } 1941d77e38e6SSteffen Klassert #endif 1942d77e38e6SSteffen Klassert 1943bf825f81SJamal Hadi Salim static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m) 1944bf825f81SJamal Hadi Salim { 1945bf825f81SJamal Hadi Salim if (attrs[XFRMA_MARK]) 19464efd7e83SAndreas Steffen memcpy(m, nla_data(attrs[XFRMA_MARK]), sizeof(struct xfrm_mark)); 1947bf825f81SJamal Hadi Salim else 1948bf825f81SJamal Hadi Salim m->v = m->m = 0; 1949bf825f81SJamal Hadi Salim 1950bf825f81SJamal Hadi Salim return m->v & m->m; 1951bf825f81SJamal Hadi Salim } 1952bf825f81SJamal Hadi Salim 1953e3dfa389SDavid S. Miller static inline int xfrm_mark_put(struct sk_buff *skb, const struct xfrm_mark *m) 1954bf825f81SJamal Hadi Salim { 19551d1e34ddSDavid S. Miller int ret = 0; 1956bf825f81SJamal Hadi Salim 19571d1e34ddSDavid S. Miller if (m->m | m->v) 19581d1e34ddSDavid S. Miller ret = nla_put(skb, XFRMA_MARK, sizeof(struct xfrm_mark), m); 19591d1e34ddSDavid S. Miller return ret; 1960bf825f81SJamal Hadi Salim } 1961bf825f81SJamal Hadi Salim 19629b42c1f1SSteffen Klassert static inline __u32 xfrm_smark_get(__u32 mark, struct xfrm_state *x) 19639b42c1f1SSteffen Klassert { 19649b42c1f1SSteffen Klassert struct xfrm_mark *m = &x->props.smark; 19659b42c1f1SSteffen Klassert 19669b42c1f1SSteffen Klassert return (m->v & m->m) | (mark & ~m->m); 19679b42c1f1SSteffen Klassert } 19689b42c1f1SSteffen Klassert 19697e652640SSteffen Klassert static inline int xfrm_if_id_put(struct sk_buff *skb, __u32 if_id) 19707e652640SSteffen Klassert { 19717e652640SSteffen Klassert int ret = 0; 19727e652640SSteffen Klassert 19737e652640SSteffen Klassert if (if_id) 19747e652640SSteffen Klassert ret = nla_put_u32(skb, XFRMA_IF_ID, if_id); 19757e652640SSteffen Klassert return ret; 19767e652640SSteffen Klassert } 19777e652640SSteffen Klassert 197870be6c91SSteffen Klassert static inline int xfrm_tunnel_check(struct sk_buff *skb, struct xfrm_state *x, 197970be6c91SSteffen Klassert unsigned int family) 198070be6c91SSteffen Klassert { 198170be6c91SSteffen Klassert bool tunnel = false; 198270be6c91SSteffen Klassert 198370be6c91SSteffen Klassert switch(family) { 198470be6c91SSteffen Klassert case AF_INET: 198570be6c91SSteffen Klassert if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4) 198670be6c91SSteffen Klassert tunnel = true; 198770be6c91SSteffen Klassert break; 198870be6c91SSteffen Klassert case AF_INET6: 198970be6c91SSteffen Klassert if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6) 199070be6c91SSteffen Klassert tunnel = true; 199170be6c91SSteffen Klassert break; 199270be6c91SSteffen Klassert } 199370be6c91SSteffen Klassert if (tunnel && !(x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL)) 199470be6c91SSteffen Klassert return -EINVAL; 199570be6c91SSteffen Klassert 199670be6c91SSteffen Klassert return 0; 199770be6c91SSteffen Klassert } 19981da177e4SLinus Torvalds #endif /* _NET_XFRM_H */ 1999