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> 18c6d1b26aSChristoph Hellwig #include <linux/sockptr.h> 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds #include <net/sock.h> 211da177e4SLinus Torvalds #include <net/dst.h> 22436a0a40SHerbert Xu #include <net/ip.h> 231da177e4SLinus Torvalds #include <net/route.h> 241da177e4SLinus Torvalds #include <net/ipv6.h> 251da177e4SLinus Torvalds #include <net/ip6_fib.h> 26fe1a5f03STimo Teräs #include <net/flow.h> 27f203b76dSSteffen Klassert #include <net/gro_cells.h> 289e0d57fdSYury Polyanskiy 299e0d57fdSYury Polyanskiy #include <linux/interrupt.h> 309e0d57fdSYury Polyanskiy 31558f82efSMasahide NAKAMURA #ifdef CONFIG_XFRM_STATISTICS 32558f82efSMasahide NAKAMURA #include <net/snmp.h> 33558f82efSMasahide NAKAMURA #endif 341da177e4SLinus Torvalds 35d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_ESP 50 36d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_AH 51 37d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_COMP 108 38d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_IPIP 4 39d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_IPV6 41 40d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_ROUTING IPPROTO_ROUTING 41d3d6dd3aSMasahide NAKAMURA #define XFRM_PROTO_DSTOPTS IPPROTO_DSTOPTS 42d3d6dd3aSMasahide NAKAMURA 43fa9921e4SNicolas Dichtel #define XFRM_ALIGN4(len) (((len) + 3) & ~3) 441da177e4SLinus Torvalds #define XFRM_ALIGN8(len) (((len) + 7) & ~7) 45b59f45d0SHerbert Xu #define MODULE_ALIAS_XFRM_MODE(family, encap) \ 46b59f45d0SHerbert Xu MODULE_ALIAS("xfrm-mode-" __stringify(family) "-" __stringify(encap)) 47d3d6dd3aSMasahide NAKAMURA #define MODULE_ALIAS_XFRM_TYPE(family, proto) \ 48d3d6dd3aSMasahide NAKAMURA MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto)) 49ffdb5211SIlan Tayari #define MODULE_ALIAS_XFRM_OFFLOAD_TYPE(family, proto) \ 50ffdb5211SIlan Tayari MODULE_ALIAS("xfrm-offload-" __stringify(family) "-" __stringify(proto)) 511da177e4SLinus Torvalds 52558f82efSMasahide NAKAMURA #ifdef CONFIG_XFRM_STATISTICS 5359c9940eSAlexey Dobriyan #define XFRM_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.xfrm_statistics, field) 54558f82efSMasahide NAKAMURA #else 5559c9940eSAlexey Dobriyan #define XFRM_INC_STATS(net, field) ((void)(net)) 56558f82efSMasahide NAKAMURA #endif 57558f82efSMasahide NAKAMURA 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds /* Organization of SPD aka "XFRM rules" 601da177e4SLinus Torvalds ------------------------------------ 611da177e4SLinus Torvalds 621da177e4SLinus Torvalds Basic objects: 631da177e4SLinus Torvalds - policy rule, struct xfrm_policy (=SPD entry) 641da177e4SLinus Torvalds - bundle of transformations, struct dst_entry == struct xfrm_dst (=SA bundle) 651da177e4SLinus Torvalds - instance of a transformer, struct xfrm_state (=SA) 661da177e4SLinus Torvalds - template to clone xfrm_state, struct xfrm_tmpl 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds SPD is plain linear list of xfrm_policy rules, ordered by priority. 691da177e4SLinus Torvalds (To be compatible with existing pfkeyv2 implementations, 701da177e4SLinus Torvalds many rules with priority of 0x7fffffff are allowed to exist and 711da177e4SLinus Torvalds such rules are ordered in an unpredictable way, thanks to bsd folks.) 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds Lookup is plain linear search until the first match with selector. 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds If "action" is "block", then we prohibit the flow, otherwise: 761da177e4SLinus Torvalds if "xfrms_nr" is zero, the flow passes untransformed. Otherwise, 771da177e4SLinus Torvalds policy entry has list of up to XFRM_MAX_DEPTH transformations, 781da177e4SLinus Torvalds described by templates xfrm_tmpl. Each template is resolved 791da177e4SLinus Torvalds to a complete xfrm_state (see below) and we pack bundle of transformations 801da177e4SLinus Torvalds to a dst_entry returned to requestor. 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds dst -. xfrm .-> xfrm_state #1 831da177e4SLinus Torvalds |---. child .-> dst -. xfrm .-> xfrm_state #2 841da177e4SLinus Torvalds |---. child .-> dst -. xfrm .-> xfrm_state #3 851da177e4SLinus Torvalds |---. child .-> NULL 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds Bundles are cached at xrfm_policy struct (field ->bundles). 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds 901da177e4SLinus Torvalds Resolution of xrfm_tmpl 911da177e4SLinus Torvalds ----------------------- 921da177e4SLinus Torvalds Template contains: 931da177e4SLinus Torvalds 1. ->mode Mode: transport or tunnel 941da177e4SLinus Torvalds 2. ->id.proto Protocol: AH/ESP/IPCOMP 951da177e4SLinus Torvalds 3. ->id.daddr Remote tunnel endpoint, ignored for transport mode. 961da177e4SLinus Torvalds Q: allow to resolve security gateway? 971da177e4SLinus Torvalds 4. ->id.spi If not zero, static SPI. 981da177e4SLinus Torvalds 5. ->saddr Local tunnel endpoint, ignored for transport mode. 991da177e4SLinus Torvalds 6. ->algos List of allowed algos. Plain bitmask now. 1001da177e4SLinus Torvalds Q: ealgos, aalgos, calgos. What a mess... 1011da177e4SLinus Torvalds 7. ->share Sharing mode. 1021da177e4SLinus Torvalds Q: how to implement private sharing mode? To add struct sock* to 1031da177e4SLinus Torvalds flow id? 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds Having this template we search through SAD searching for entries 1061da177e4SLinus Torvalds with appropriate mode/proto/algo, permitted by selector. 1071da177e4SLinus Torvalds If no appropriate entry found, it is requested from key manager. 1081da177e4SLinus Torvalds 1091da177e4SLinus Torvalds PROBLEMS: 1101da177e4SLinus Torvalds Q: How to find all the bundles referring to a physical path for 1111da177e4SLinus Torvalds PMTU discovery? Seems, dst should contain list of all parents... 1121da177e4SLinus Torvalds and enter to infinite locking hierarchy disaster. 1131da177e4SLinus Torvalds No! It is easier, we will not search for them, let them find us. 1141da177e4SLinus Torvalds We add genid to each dst plus pointer to genid of raw IP route, 1151da177e4SLinus Torvalds pmtu disc will update pmtu on raw IP route and increase its genid. 1161da177e4SLinus Torvalds dst_check() will see this for top level and trigger resyncing 1171da177e4SLinus Torvalds metrics. Plus, it will be made via sk->sk_dst_cache. Solved. 1181da177e4SLinus Torvalds */ 1191da177e4SLinus Torvalds 12012a169e7SHerbert Xu struct xfrm_state_walk { 12112a169e7SHerbert Xu struct list_head all; 12212a169e7SHerbert Xu u8 state; 12312a169e7SHerbert Xu u8 dying; 12412a169e7SHerbert Xu u8 proto; 12512a169e7SHerbert Xu u32 seq; 126870a2df4SNicolas Dichtel struct xfrm_address_filter *filter; 12712a169e7SHerbert Xu }; 12812a169e7SHerbert Xu 129482db2f1SLeon Romanovsky enum { 130482db2f1SLeon Romanovsky XFRM_DEV_OFFLOAD_IN = 1, 131482db2f1SLeon Romanovsky XFRM_DEV_OFFLOAD_OUT, 132482db2f1SLeon Romanovsky }; 133482db2f1SLeon Romanovsky 134*d14f28b8SLeon Romanovsky enum { 135*d14f28b8SLeon Romanovsky XFRM_DEV_OFFLOAD_UNSPECIFIED, 136*d14f28b8SLeon Romanovsky XFRM_DEV_OFFLOAD_CRYPTO, 137*d14f28b8SLeon Romanovsky XFRM_DEV_OFFLOAD_PACKET, 138*d14f28b8SLeon Romanovsky }; 139*d14f28b8SLeon Romanovsky 14087e0a94eSLeon Romanovsky struct xfrm_dev_offload { 141d77e38e6SSteffen Klassert struct net_device *dev; 142e1b539bdSEric Dumazet netdevice_tracker dev_tracker; 143bdfd2d1fSJarod Wilson struct net_device *real_dev; 144d77e38e6SSteffen Klassert unsigned long offload_handle; 145482db2f1SLeon Romanovsky u8 dir : 2; 146*d14f28b8SLeon Romanovsky u8 type : 2; 147d77e38e6SSteffen Klassert }; 148d77e38e6SSteffen Klassert 149c9500d7bSFlorian Westphal struct xfrm_mode { 150c9500d7bSFlorian Westphal u8 encap; 151c9500d7bSFlorian Westphal u8 family; 152c9500d7bSFlorian Westphal u8 flags; 153c9500d7bSFlorian Westphal }; 154c9500d7bSFlorian Westphal 155c9500d7bSFlorian Westphal /* Flags for xfrm_mode. */ 156c9500d7bSFlorian Westphal enum { 157c9500d7bSFlorian Westphal XFRM_MODE_FLAG_TUNNEL = 1, 158c9500d7bSFlorian Westphal }; 159c9500d7bSFlorian Westphal 160cfc61c59SFlorian Westphal enum xfrm_replay_mode { 161cfc61c59SFlorian Westphal XFRM_REPLAY_MODE_LEGACY, 162cfc61c59SFlorian Westphal XFRM_REPLAY_MODE_BMP, 163cfc61c59SFlorian Westphal XFRM_REPLAY_MODE_ESN, 164cfc61c59SFlorian Westphal }; 165cfc61c59SFlorian Westphal 1661da177e4SLinus Torvalds /* Full description of state of transformer. */ 167fd2c3ef7SEric Dumazet struct xfrm_state { 1680c5c9fb5SEric W. Biederman possible_net_t xs_net; 169abb81c4fSHerbert Xu union { 17012a169e7SHerbert Xu struct hlist_node gclist; 1718f126e37SDavid S. Miller struct hlist_node bydst; 172abb81c4fSHerbert Xu }; 1738f126e37SDavid S. Miller struct hlist_node bysrc; 1748f126e37SDavid S. Miller struct hlist_node byspi; 175fe9f1d87SSabrina Dubroca struct hlist_node byseq; 1761da177e4SLinus Torvalds 17788755e9cSReshetova, Elena refcount_t refcnt; 1781da177e4SLinus Torvalds spinlock_t lock; 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds struct xfrm_id id; 1811da177e4SLinus Torvalds struct xfrm_selector sel; 182bf825f81SJamal Hadi Salim struct xfrm_mark mark; 1837e652640SSteffen Klassert u32 if_id; 18435d2856bSMartin Willi u32 tfcpad; 1851da177e4SLinus Torvalds 1869d4a706dSDavid S. Miller u32 genid; 1879d4a706dSDavid S. Miller 18812a169e7SHerbert Xu /* Key manager bits */ 18912a169e7SHerbert Xu struct xfrm_state_walk km; 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds /* Parameters of this state. */ 1921da177e4SLinus Torvalds struct { 1931da177e4SLinus Torvalds u32 reqid; 1941da177e4SLinus Torvalds u8 mode; 1951da177e4SLinus Torvalds u8 replay_window; 1961da177e4SLinus Torvalds u8 aalgo, ealgo, calgo; 1971da177e4SLinus Torvalds u8 flags; 1981da177e4SLinus Torvalds u16 family; 1991da177e4SLinus Torvalds xfrm_address_t saddr; 2001da177e4SLinus Torvalds int header_len; 2011da177e4SLinus Torvalds int trailer_len; 202a947b0a9SNicolas Dichtel u32 extra_flags; 2039b42c1f1SSteffen Klassert struct xfrm_mark smark; 2041da177e4SLinus Torvalds } props; 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds struct xfrm_lifetime_cfg lft; 2071da177e4SLinus Torvalds 2081da177e4SLinus Torvalds /* Data for transformer */ 2094447bb33SMartin Willi struct xfrm_algo_auth *aalg; 2101da177e4SLinus Torvalds struct xfrm_algo *ealg; 2111da177e4SLinus Torvalds struct xfrm_algo *calg; 2121a6509d9SHerbert Xu struct xfrm_algo_aead *aead; 21369b0137fSHerbert Xu const char *geniv; 2141da177e4SLinus Torvalds 2154e484b3eSAntony Antony /* mapping change rate limiting */ 2164e484b3eSAntony Antony __be16 new_mapping_sport; 2174e484b3eSAntony Antony u32 new_mapping; /* seconds */ 2184e484b3eSAntony Antony u32 mapping_maxage; /* seconds for input SA */ 2194e484b3eSAntony Antony 2201da177e4SLinus Torvalds /* Data for encapsulator */ 2211da177e4SLinus Torvalds struct xfrm_encap_tmpl *encap; 222e27cca96SSabrina Dubroca struct sock __rcu *encap_sk; 2231da177e4SLinus Torvalds 224060f02a3SNoriaki TAKAMIYA /* Data for care-of address */ 225060f02a3SNoriaki TAKAMIYA xfrm_address_t *coaddr; 226060f02a3SNoriaki TAKAMIYA 2271da177e4SLinus Torvalds /* IPComp needs an IPIP tunnel for handling uncompressed packets */ 2281da177e4SLinus Torvalds struct xfrm_state *tunnel; 2291da177e4SLinus Torvalds 2301da177e4SLinus Torvalds /* If a tunnel, number of users + 1 */ 2311da177e4SLinus Torvalds atomic_t tunnel_users; 2321da177e4SLinus Torvalds 2331da177e4SLinus Torvalds /* State for replay detection */ 2341da177e4SLinus Torvalds struct xfrm_replay_state replay; 2359736acf3SSteffen Klassert struct xfrm_replay_state_esn *replay_esn; 2361da177e4SLinus Torvalds 237f8cd5488SJamal Hadi Salim /* Replay detection state at the time we sent the last notification */ 238f8cd5488SJamal Hadi Salim struct xfrm_replay_state preplay; 2399736acf3SSteffen Klassert struct xfrm_replay_state_esn *preplay_esn; 240f8cd5488SJamal Hadi Salim 241cfc61c59SFlorian Westphal /* replay detection mode */ 242cfc61c59SFlorian Westphal enum xfrm_replay_mode repl_mode; 2432717096aSJamal Hadi Salim /* internal flag that only holds state for delayed aevent at the 2442717096aSJamal Hadi Salim * moment 2452717096aSJamal Hadi Salim */ 2462717096aSJamal Hadi Salim u32 xflags; 2472717096aSJamal Hadi Salim 248f8cd5488SJamal Hadi Salim /* Replay detection notification settings */ 249f8cd5488SJamal Hadi Salim u32 replay_maxage; 250f8cd5488SJamal Hadi Salim u32 replay_maxdiff; 251f8cd5488SJamal Hadi Salim 252f8cd5488SJamal Hadi Salim /* Replay detection notification timer */ 253f8cd5488SJamal Hadi Salim struct timer_list rtimer; 254f8cd5488SJamal Hadi Salim 2551da177e4SLinus Torvalds /* Statistics */ 2561da177e4SLinus Torvalds struct xfrm_stats stats; 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds struct xfrm_lifetime_cur curlft; 259671422b2SThomas Gleixner struct hrtimer mtimer; 2601da177e4SLinus Torvalds 26187e0a94eSLeon Romanovsky struct xfrm_dev_offload xso; 262d77e38e6SSteffen Klassert 263e3c0d047SFan Du /* used to fix curlft->add_time when changing date */ 264e3c0d047SFan Du long saved_tmo; 265e3c0d047SFan Du 2669afaca05SMasahide NAKAMURA /* Last used time */ 26703dc7a35SArnd Bergmann time64_t lastused; 2689afaca05SMasahide NAKAMURA 269cac2661cSSteffen Klassert struct page_frag xfrag; 270cac2661cSSteffen Klassert 2711da177e4SLinus Torvalds /* Reference to data common to all the instances of this 2721da177e4SLinus Torvalds * transformer. */ 273533cb5b0SEric Dumazet const struct xfrm_type *type; 274c9500d7bSFlorian Westphal struct xfrm_mode inner_mode; 275c9500d7bSFlorian Westphal struct xfrm_mode inner_mode_iaf; 276c9500d7bSFlorian Westphal struct xfrm_mode outer_mode; 2771da177e4SLinus Torvalds 2789d389d7fSSteffen Klassert const struct xfrm_type_offload *type_offload; 2799d389d7fSSteffen Klassert 280df71837dSTrent Jaeger /* Security context */ 281df71837dSTrent Jaeger struct xfrm_sec_ctx *security; 282df71837dSTrent Jaeger 2831da177e4SLinus Torvalds /* Private data of this transformer, format is opaque, 2841da177e4SLinus Torvalds * interpreted by xfrm_type methods. */ 2851da177e4SLinus Torvalds void *data; 2861da177e4SLinus Torvalds }; 2871da177e4SLinus Torvalds 288673c09beSAlexey Dobriyan static inline struct net *xs_net(struct xfrm_state *x) 289673c09beSAlexey Dobriyan { 290673c09beSAlexey Dobriyan return read_pnet(&x->xs_net); 291673c09beSAlexey Dobriyan } 292673c09beSAlexey Dobriyan 2932717096aSJamal Hadi Salim /* xflags - make enum if more show up */ 2942717096aSJamal Hadi Salim #define XFRM_TIME_DEFER 1 295e3c0d047SFan Du #define XFRM_SOFT_EXPIRE 2 2962717096aSJamal Hadi Salim 2971da177e4SLinus Torvalds enum { 2981da177e4SLinus Torvalds XFRM_STATE_VOID, 2991da177e4SLinus Torvalds XFRM_STATE_ACQ, 3001da177e4SLinus Torvalds XFRM_STATE_VALID, 3011da177e4SLinus Torvalds XFRM_STATE_ERROR, 3021da177e4SLinus Torvalds XFRM_STATE_EXPIRED, 3031da177e4SLinus Torvalds XFRM_STATE_DEAD 3041da177e4SLinus Torvalds }; 3051da177e4SLinus Torvalds 30626b15dadSJamal Hadi Salim /* callback structure passed from either netlink or pfkey */ 307fd2c3ef7SEric Dumazet struct km_event { 308bf08867fSHerbert Xu union { 309bf08867fSHerbert Xu u32 hard; 310bf08867fSHerbert Xu u32 proto; 311bf08867fSHerbert Xu u32 byid; 312f8cd5488SJamal Hadi Salim u32 aevent; 313f7b6983fSMasahide NAKAMURA u32 type; 314bf08867fSHerbert Xu } data; 315bf08867fSHerbert Xu 31626b15dadSJamal Hadi Salim u32 seq; 31715e47304SEric W. Biederman u32 portid; 31826b15dadSJamal Hadi Salim u32 event; 3197067802eSAlexey Dobriyan struct net *net; 32026b15dadSJamal Hadi Salim }; 32126b15dadSJamal Hadi Salim 322abc340b3SEyal Birger struct xfrm_if_decode_session_result { 323abc340b3SEyal Birger struct net *net; 324abc340b3SEyal Birger u32 if_id; 325abc340b3SEyal Birger }; 326abc340b3SEyal Birger 327f203b76dSSteffen Klassert struct xfrm_if_cb { 328abc340b3SEyal Birger bool (*decode_session)(struct sk_buff *skb, 329abc340b3SEyal Birger unsigned short family, 330abc340b3SEyal Birger struct xfrm_if_decode_session_result *res); 331f203b76dSSteffen Klassert }; 332f203b76dSSteffen Klassert 333f203b76dSSteffen Klassert void xfrm_if_register_cb(const struct xfrm_if_cb *ifcb); 334f203b76dSSteffen Klassert void xfrm_if_unregister_cb(void); 335f203b76dSSteffen Klassert 33625ee3286SHerbert Xu struct net_device; 3371da177e4SLinus Torvalds struct xfrm_type; 3381da177e4SLinus Torvalds struct xfrm_dst; 3391da177e4SLinus Torvalds struct xfrm_policy_afinfo { 3401da177e4SLinus Torvalds struct dst_ops *dst_ops; 34142a7b32bSDavid Ahern struct dst_entry *(*dst_lookup)(struct net *net, 34242a7b32bSDavid Ahern int tos, int oif, 3435e6b930fSDavid S. Miller const xfrm_address_t *saddr, 344077fbac4SLorenzo Colitti const xfrm_address_t *daddr, 345077fbac4SLorenzo Colitti u32 mark); 34642a7b32bSDavid Ahern int (*get_saddr)(struct net *net, int oif, 34742a7b32bSDavid Ahern xfrm_address_t *saddr, 348077fbac4SLorenzo Colitti xfrm_address_t *daddr, 349077fbac4SLorenzo Colitti u32 mark); 35025ee3286SHerbert Xu int (*fill_dst)(struct xfrm_dst *xdst, 35187c1e12bSHerbert Xu struct net_device *dev, 3520c7b3eefSDavid S. Miller const struct flowi *fl); 3532774c131SDavid S. Miller struct dst_entry *(*blackhole_route)(struct net *net, struct dst_entry *orig); 3541da177e4SLinus Torvalds }; 3551da177e4SLinus Torvalds 356a2817d8bSFlorian Westphal int xfrm_policy_register_afinfo(const struct xfrm_policy_afinfo *afinfo, int family); 357a2817d8bSFlorian Westphal void xfrm_policy_unregister_afinfo(const struct xfrm_policy_afinfo *afinfo); 358d511337aSJoe Perches void km_policy_notify(struct xfrm_policy *xp, int dir, 359d511337aSJoe Perches const struct km_event *c); 360d511337aSJoe Perches void km_state_notify(struct xfrm_state *x, const struct km_event *c); 3611da177e4SLinus Torvalds 3621da177e4SLinus Torvalds struct xfrm_tmpl; 363d511337aSJoe Perches int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, 364d511337aSJoe Perches struct xfrm_policy *pol); 365d511337aSJoe Perches void km_state_expired(struct xfrm_state *x, int hard, u32 portid); 366d511337aSJoe Perches int __xfrm_state_delete(struct xfrm_state *x); 36753bc6b4dSJamal Hadi Salim 3681da177e4SLinus Torvalds struct xfrm_state_afinfo { 3694c203b04SFlorian Westphal u8 family; 3704c203b04SFlorian Westphal u8 proto; 3714f518e80SFlorian Westphal 3724f518e80SFlorian Westphal const struct xfrm_type_offload *type_offload_esp; 3734f518e80SFlorian Westphal 3744f518e80SFlorian Westphal const struct xfrm_type *type_esp; 3754f518e80SFlorian Westphal const struct xfrm_type *type_ipip; 3764f518e80SFlorian Westphal const struct xfrm_type *type_ipip6; 3774f518e80SFlorian Westphal const struct xfrm_type *type_comp; 3784f518e80SFlorian Westphal const struct xfrm_type *type_ah; 3794f518e80SFlorian Westphal const struct xfrm_type *type_routing; 3804f518e80SFlorian Westphal const struct xfrm_type *type_dstopts; 3819d389d7fSSteffen Klassert 382ede2059dSEric W. Biederman int (*output)(struct net *net, struct sock *sk, struct sk_buff *skb); 383716062fdSHerbert Xu int (*transport_finish)(struct sk_buff *skb, 384716062fdSHerbert Xu int async); 385628e341fSHannes Frederic Sowa void (*local_error)(struct sk_buff *skb, u32 mtu); 3861da177e4SLinus Torvalds }; 3871da177e4SLinus Torvalds 388d511337aSJoe Perches int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo); 389d511337aSJoe Perches int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo); 390d511337aSJoe Perches struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family); 391711059b9SFlorian Westphal struct xfrm_state_afinfo *xfrm_state_afinfo_get_rcu(unsigned int family); 3921da177e4SLinus Torvalds 3932f32b51bSSteffen Klassert struct xfrm_input_afinfo { 3941475ee0aSXin Long u8 family; 3951475ee0aSXin Long bool is_ipip; 3962f32b51bSSteffen Klassert int (*callback)(struct sk_buff *skb, u8 protocol, 3972f32b51bSSteffen Klassert int err); 3982f32b51bSSteffen Klassert }; 3992f32b51bSSteffen Klassert 400960fdfdeSFlorian Westphal int xfrm_input_register_afinfo(const struct xfrm_input_afinfo *afinfo); 401960fdfdeSFlorian Westphal int xfrm_input_unregister_afinfo(const struct xfrm_input_afinfo *afinfo); 4022f32b51bSSteffen Klassert 403b48c05abSSteffen Klassert void xfrm_flush_gc(void); 404d511337aSJoe Perches void xfrm_state_delete_tunnel(struct xfrm_state *x); 4051da177e4SLinus Torvalds 406fd2c3ef7SEric Dumazet struct xfrm_type { 4071da177e4SLinus Torvalds struct module *owner; 408a6337463Sjamal u8 proto; 409a6337463Sjamal u8 flags; 4101b5c2299SMasahide NAKAMURA #define XFRM_TYPE_NON_FRAGMENT 1 411436a0a40SHerbert Xu #define XFRM_TYPE_REPLAY_PROT 2 412f04e7e8dSHerbert Xu #define XFRM_TYPE_LOCAL_COADDR 4 413f04e7e8dSHerbert Xu #define XFRM_TYPE_REMOTE_COADDR 8 4141da177e4SLinus Torvalds 415e1e10b44SSabrina Dubroca int (*init_state)(struct xfrm_state *x, 416e1e10b44SSabrina Dubroca struct netlink_ext_ack *extack); 4171da177e4SLinus Torvalds void (*destructor)(struct xfrm_state *); 418e695633eSHerbert Xu int (*input)(struct xfrm_state *, struct sk_buff *skb); 4191da177e4SLinus Torvalds int (*output)(struct xfrm_state *, struct sk_buff *pskb); 4208f029de2SDavid S. Miller int (*reject)(struct xfrm_state *, struct sk_buff *, 4218f029de2SDavid S. Miller const struct flowi *); 4221da177e4SLinus Torvalds }; 4231da177e4SLinus Torvalds 424d511337aSJoe Perches int xfrm_register_type(const struct xfrm_type *type, unsigned short family); 4254f518e80SFlorian Westphal void xfrm_unregister_type(const struct xfrm_type *type, unsigned short family); 4261da177e4SLinus Torvalds 4279d389d7fSSteffen Klassert struct xfrm_type_offload { 4289d389d7fSSteffen Klassert struct module *owner; 4299d389d7fSSteffen Klassert u8 proto; 4309d389d7fSSteffen Klassert void (*encap)(struct xfrm_state *, struct sk_buff *pskb); 4319d389d7fSSteffen Klassert int (*input_tail)(struct xfrm_state *x, struct sk_buff *skb); 4329d389d7fSSteffen Klassert int (*xmit)(struct xfrm_state *, struct sk_buff *pskb, netdev_features_t features); 4339d389d7fSSteffen Klassert }; 4349d389d7fSSteffen Klassert 4359d389d7fSSteffen Klassert int xfrm_register_type_offload(const struct xfrm_type_offload *type, unsigned short family); 4364f518e80SFlorian Westphal void xfrm_unregister_type_offload(const struct xfrm_type_offload *type, unsigned short family); 4379d389d7fSSteffen Klassert 438df9dcb45SKazunori MIYAZAWA static inline int xfrm_af2proto(unsigned int family) 439df9dcb45SKazunori MIYAZAWA { 440df9dcb45SKazunori MIYAZAWA switch(family) { 441df9dcb45SKazunori MIYAZAWA case AF_INET: 442df9dcb45SKazunori MIYAZAWA return IPPROTO_IPIP; 443df9dcb45SKazunori MIYAZAWA case AF_INET6: 444df9dcb45SKazunori MIYAZAWA return IPPROTO_IPV6; 445df9dcb45SKazunori MIYAZAWA default: 446df9dcb45SKazunori MIYAZAWA return 0; 447df9dcb45SKazunori MIYAZAWA } 448df9dcb45SKazunori MIYAZAWA } 449df9dcb45SKazunori MIYAZAWA 4504c145dceSFlorian Westphal static inline const struct xfrm_mode *xfrm_ip2inner_mode(struct xfrm_state *x, int ipproto) 451df9dcb45SKazunori MIYAZAWA { 452df9dcb45SKazunori MIYAZAWA if ((ipproto == IPPROTO_IPIP && x->props.family == AF_INET) || 453df9dcb45SKazunori MIYAZAWA (ipproto == IPPROTO_IPV6 && x->props.family == AF_INET6)) 454c9500d7bSFlorian Westphal return &x->inner_mode; 455df9dcb45SKazunori MIYAZAWA else 456c9500d7bSFlorian Westphal return &x->inner_mode_iaf; 457df9dcb45SKazunori MIYAZAWA } 458df9dcb45SKazunori MIYAZAWA 459fd2c3ef7SEric Dumazet struct xfrm_tmpl { 4601da177e4SLinus Torvalds /* id in template is interpreted as: 4611da177e4SLinus Torvalds * daddr - destination of tunnel, may be zero for transport mode. 4621da177e4SLinus Torvalds * spi - zero to acquire spi. Not zero if spi is static, then 4631da177e4SLinus Torvalds * daddr must be fixed too. 4641da177e4SLinus Torvalds * proto - AH/ESP/IPCOMP 4651da177e4SLinus Torvalds */ 4661da177e4SLinus Torvalds struct xfrm_id id; 4671da177e4SLinus Torvalds 4681da177e4SLinus Torvalds /* Source address of tunnel. Ignored, if it is not a tunnel. */ 4691da177e4SLinus Torvalds xfrm_address_t saddr; 4701da177e4SLinus Torvalds 47176b3f055SMiika Komu unsigned short encap_family; 47276b3f055SMiika Komu 473a6337463Sjamal u32 reqid; 4741da177e4SLinus Torvalds 4757e49e6deSMasahide NAKAMURA /* Mode: transport, tunnel etc. */ 476a6337463Sjamal u8 mode; 4771da177e4SLinus Torvalds 4781da177e4SLinus Torvalds /* Sharing mode: unique, this session only, this user only etc. */ 479a6337463Sjamal u8 share; 4801da177e4SLinus Torvalds 4811da177e4SLinus Torvalds /* May skip this transfomration if no SA is found */ 482a6337463Sjamal u8 optional; 4831da177e4SLinus Torvalds 484c5d18e98SHerbert Xu /* Skip aalgos/ealgos/calgos checks. */ 485a6337463Sjamal u8 allalgs; 486c5d18e98SHerbert Xu 4871da177e4SLinus Torvalds /* Bit mask of algos allowed for acquisition */ 488a6337463Sjamal u32 aalgos; 489a6337463Sjamal u32 ealgos; 490a6337463Sjamal u32 calgos; 4911da177e4SLinus Torvalds }; 4921da177e4SLinus Torvalds 493622dc828SMasahide NAKAMURA #define XFRM_MAX_DEPTH 6 49454ef207aSSteffen Klassert #define XFRM_MAX_OFFLOAD_DEPTH 1 4951da177e4SLinus Torvalds 49612a169e7SHerbert Xu struct xfrm_policy_walk_entry { 49712a169e7SHerbert Xu struct list_head all; 49812a169e7SHerbert Xu u8 dead; 49912a169e7SHerbert Xu }; 50012a169e7SHerbert Xu 50112a169e7SHerbert Xu struct xfrm_policy_walk { 50212a169e7SHerbert Xu struct xfrm_policy_walk_entry walk; 50312a169e7SHerbert Xu u8 type; 50412a169e7SHerbert Xu u32 seq; 50512a169e7SHerbert Xu }; 50612a169e7SHerbert Xu 507a0073fe1SSteffen Klassert struct xfrm_policy_queue { 508a0073fe1SSteffen Klassert struct sk_buff_head hold_queue; 509a0073fe1SSteffen Klassert struct timer_list hold_timer; 510a0073fe1SSteffen Klassert unsigned long timeout; 511a0073fe1SSteffen Klassert }; 512a0073fe1SSteffen Klassert 513fd2c3ef7SEric Dumazet struct xfrm_policy { 5140c5c9fb5SEric W. Biederman possible_net_t xp_net; 5152518c7c2SDavid S. Miller struct hlist_node bydst; 5162518c7c2SDavid S. Miller struct hlist_node byidx; 5171da177e4SLinus Torvalds 5181da177e4SLinus Torvalds /* This lock only affects elements except for entry. */ 5191da177e4SLinus Torvalds rwlock_t lock; 520850a6212SReshetova, Elena refcount_t refcnt; 5216be3b0dbSFlorian Westphal u32 pos; 5221da177e4SLinus Torvalds struct timer_list timer; 5231da177e4SLinus Torvalds 52480c802f3STimo Teräs atomic_t genid; 5251da177e4SLinus Torvalds u32 priority; 5261da177e4SLinus Torvalds u32 index; 5277e652640SSteffen Klassert u32 if_id; 528bf825f81SJamal Hadi Salim struct xfrm_mark mark; 5291da177e4SLinus Torvalds struct xfrm_selector selector; 5301da177e4SLinus Torvalds struct xfrm_lifetime_cfg lft; 5311da177e4SLinus Torvalds struct xfrm_lifetime_cur curlft; 53212a169e7SHerbert Xu struct xfrm_policy_walk_entry walk; 533a0073fe1SSteffen Klassert struct xfrm_policy_queue polq; 5349cf545ebSFlorian Westphal bool bydst_reinsert; 53546ca5f5dSArnaldo Carvalho de Melo u8 type; 53646ca5f5dSArnaldo Carvalho de Melo u8 action; 53746ca5f5dSArnaldo Carvalho de Melo u8 flags; 53846ca5f5dSArnaldo Carvalho de Melo u8 xfrm_nr; 53912a169e7SHerbert Xu u16 family; 540df71837dSTrent Jaeger struct xfrm_sec_ctx *security; 5411da177e4SLinus Torvalds struct xfrm_tmpl xfrm_vec[XFRM_MAX_DEPTH]; 54224969facSFlorian Westphal struct hlist_node bydst_inexact_list; 54356f04730SEric Dumazet struct rcu_head rcu; 5441da177e4SLinus Torvalds }; 5451da177e4SLinus Torvalds 54663eb23f5SDavid S. Miller static inline struct net *xp_net(const struct xfrm_policy *xp) 5470331b1f3SAlexey Dobriyan { 5480331b1f3SAlexey Dobriyan return read_pnet(&xp->xp_net); 5490331b1f3SAlexey Dobriyan } 5500331b1f3SAlexey Dobriyan 55113c1d189SArnaud Ebalard struct xfrm_kmaddress { 55213c1d189SArnaud Ebalard xfrm_address_t local; 55313c1d189SArnaud Ebalard xfrm_address_t remote; 55413c1d189SArnaud Ebalard u32 reserved; 55513c1d189SArnaud Ebalard u16 family; 55613c1d189SArnaud Ebalard }; 55713c1d189SArnaud Ebalard 55880c9abaaSShinta Sugimoto struct xfrm_migrate { 55980c9abaaSShinta Sugimoto xfrm_address_t old_daddr; 56080c9abaaSShinta Sugimoto xfrm_address_t old_saddr; 56180c9abaaSShinta Sugimoto xfrm_address_t new_daddr; 56280c9abaaSShinta Sugimoto xfrm_address_t new_saddr; 56380c9abaaSShinta Sugimoto u8 proto; 56480c9abaaSShinta Sugimoto u8 mode; 56580c9abaaSShinta Sugimoto u16 reserved; 56680c9abaaSShinta Sugimoto u32 reqid; 56780c9abaaSShinta Sugimoto u16 old_family; 56880c9abaaSShinta Sugimoto u16 new_family; 56980c9abaaSShinta Sugimoto }; 57080c9abaaSShinta Sugimoto 5711da177e4SLinus Torvalds #define XFRM_KM_TIMEOUT 30 572f8cd5488SJamal Hadi Salim /* what happened */ 573f8cd5488SJamal Hadi Salim #define XFRM_REPLAY_UPDATE XFRM_AE_CR 574f8cd5488SJamal Hadi Salim #define XFRM_REPLAY_TIMEOUT XFRM_AE_CE 575f8cd5488SJamal Hadi Salim 576f8cd5488SJamal Hadi Salim /* default aevent timeout in units of 100ms */ 577f8cd5488SJamal Hadi Salim #define XFRM_AE_ETIME 10 578f8cd5488SJamal Hadi Salim /* Async Event timer multiplier */ 579f8cd5488SJamal Hadi Salim #define XFRM_AE_ETH_M 10 580f8cd5488SJamal Hadi Salim /* default seq threshold size */ 581f8cd5488SJamal Hadi Salim #define XFRM_AE_SEQT_SIZE 2 5821da177e4SLinus Torvalds 583fd2c3ef7SEric Dumazet struct xfrm_mgr { 5841da177e4SLinus Torvalds struct list_head list; 585214e005bSDavid S. Miller int (*notify)(struct xfrm_state *x, const struct km_event *c); 58665e0736bSFan Du int (*acquire)(struct xfrm_state *x, struct xfrm_tmpl *, struct xfrm_policy *xp); 587cb969f07SVenkat Yekkirala struct xfrm_policy *(*compile_policy)(struct sock *sk, int opt, u8 *data, int len, int *dir); 5885d36b180SAl Viro int (*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport); 589214e005bSDavid S. Miller int (*notify_policy)(struct xfrm_policy *x, int dir, const struct km_event *c); 590db983c11SAlexey Dobriyan int (*report)(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr); 591183cad12SDavid S. Miller int (*migrate)(const struct xfrm_selector *sel, 592183cad12SDavid S. Miller u8 dir, u8 type, 593183cad12SDavid S. Miller const struct xfrm_migrate *m, 594183cad12SDavid S. Miller int num_bundles, 5958bafd730SAntony Antony const struct xfrm_kmaddress *k, 5968bafd730SAntony Antony const struct xfrm_encap_tmpl *encap); 5970f24558eSHoria Geanta bool (*is_alive)(const struct km_event *c); 5981da177e4SLinus Torvalds }; 5991da177e4SLinus Torvalds 600f41b284aSZhengchao Shao void xfrm_register_km(struct xfrm_mgr *km); 601f41b284aSZhengchao Shao void xfrm_unregister_km(struct xfrm_mgr *km); 6021da177e4SLinus Torvalds 60370be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb { 60470be6c91SSteffen Klassert union { 60570be6c91SSteffen Klassert struct inet_skb_parm h4; 60670be6c91SSteffen Klassert struct inet6_skb_parm h6; 60770be6c91SSteffen Klassert } header; 60870be6c91SSteffen Klassert 60970be6c91SSteffen Klassert union { 61070be6c91SSteffen Klassert struct ip_tunnel *ip4; 61170be6c91SSteffen Klassert struct ip6_tnl *ip6; 61270be6c91SSteffen Klassert } tunnel; 61370be6c91SSteffen Klassert }; 61470be6c91SSteffen Klassert 61570be6c91SSteffen Klassert #define XFRM_TUNNEL_SKB_CB(__skb) ((struct xfrm_tunnel_skb_cb *)&((__skb)->cb[0])) 61670be6c91SSteffen Klassert 617436a0a40SHerbert Xu /* 618436a0a40SHerbert Xu * This structure is used for the duration where packets are being 619436a0a40SHerbert Xu * transformed by IPsec. As soon as the packet leaves IPsec the 620436a0a40SHerbert Xu * area beyond the generic IP part may be overwritten. 621436a0a40SHerbert Xu */ 622436a0a40SHerbert Xu struct xfrm_skb_cb { 62370be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 624436a0a40SHerbert Xu 625436a0a40SHerbert Xu /* Sequence number for replay protection. */ 626b318e0e4SHerbert Xu union { 6271ce3644aSSteffen Klassert struct { 6281ce3644aSSteffen Klassert __u32 low; 6291ce3644aSSteffen Klassert __u32 hi; 6301ce3644aSSteffen Klassert } output; 6311ce3644aSSteffen Klassert struct { 6321ce3644aSSteffen Klassert __be32 low; 6331ce3644aSSteffen Klassert __be32 hi; 6341ce3644aSSteffen Klassert } input; 635b318e0e4SHerbert Xu } seq; 636436a0a40SHerbert Xu }; 637436a0a40SHerbert Xu 638436a0a40SHerbert Xu #define XFRM_SKB_CB(__skb) ((struct xfrm_skb_cb *)&((__skb)->cb[0])) 639436a0a40SHerbert Xu 64036cf9acfSHerbert Xu /* 64136cf9acfSHerbert Xu * This structure is used by the afinfo prepare_input/prepare_output functions 64236cf9acfSHerbert Xu * to transmit header information to the mode input/output functions. 64336cf9acfSHerbert Xu */ 64436cf9acfSHerbert Xu struct xfrm_mode_skb_cb { 64570be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 64636cf9acfSHerbert Xu 64736cf9acfSHerbert Xu /* Copied from header for IPv4, always set to zero and DF for IPv6. */ 64836cf9acfSHerbert Xu __be16 id; 64936cf9acfSHerbert Xu __be16 frag_off; 65036cf9acfSHerbert Xu 651732c8bd5SHerbert Xu /* IP header length (excluding options or extension headers). */ 652732c8bd5SHerbert Xu u8 ihl; 653732c8bd5SHerbert Xu 65436cf9acfSHerbert Xu /* TOS for IPv4, class for IPv6. */ 65536cf9acfSHerbert Xu u8 tos; 65636cf9acfSHerbert Xu 65736cf9acfSHerbert Xu /* TTL for IPv4, hop limitfor IPv6. */ 65836cf9acfSHerbert Xu u8 ttl; 65936cf9acfSHerbert Xu 66036cf9acfSHerbert Xu /* Protocol for IPv4, NH for IPv6. */ 66136cf9acfSHerbert Xu u8 protocol; 66236cf9acfSHerbert Xu 663732c8bd5SHerbert Xu /* Option length for IPv4, zero for IPv6. */ 664732c8bd5SHerbert Xu u8 optlen; 665732c8bd5SHerbert Xu 66636cf9acfSHerbert Xu /* Used by IPv6 only, zero for IPv4. */ 66736cf9acfSHerbert Xu u8 flow_lbl[3]; 66836cf9acfSHerbert Xu }; 66936cf9acfSHerbert Xu 67036cf9acfSHerbert Xu #define XFRM_MODE_SKB_CB(__skb) ((struct xfrm_mode_skb_cb *)&((__skb)->cb[0])) 67136cf9acfSHerbert Xu 672716062fdSHerbert Xu /* 673716062fdSHerbert Xu * This structure is used by the input processing to locate the SPI and 674716062fdSHerbert Xu * related information. 675716062fdSHerbert Xu */ 676716062fdSHerbert Xu struct xfrm_spi_skb_cb { 67770be6c91SSteffen Klassert struct xfrm_tunnel_skb_cb header; 678716062fdSHerbert Xu 679716062fdSHerbert Xu unsigned int daddroff; 6802fcb45b6SHerbert Xu unsigned int family; 6817785bba2SSteffen Klassert __be32 seq; 682716062fdSHerbert Xu }; 683716062fdSHerbert Xu 684716062fdSHerbert Xu #define XFRM_SPI_SKB_CB(__skb) ((struct xfrm_spi_skb_cb *)&((__skb)->cb[0])) 685716062fdSHerbert Xu 686c9204d9cSJoy Latten #ifdef CONFIG_AUDITSYSCALL 687afeb14b4SPaul Moore static inline struct audit_buffer *xfrm_audit_start(const char *op) 688ab5f5e8bSJoy Latten { 689ab5f5e8bSJoy Latten struct audit_buffer *audit_buf = NULL; 690ab5f5e8bSJoy Latten 691f7859590SRichard Guy Briggs if (audit_enabled == AUDIT_OFF) 692afeb14b4SPaul Moore return NULL; 693cdfb6b34SRichard Guy Briggs audit_buf = audit_log_start(audit_context(), GFP_ATOMIC, 694ab5f5e8bSJoy Latten AUDIT_MAC_IPSEC_EVENT); 695ab5f5e8bSJoy Latten if (audit_buf == NULL) 696ab5f5e8bSJoy Latten return NULL; 697afeb14b4SPaul Moore audit_log_format(audit_buf, "op=%s", op); 698afeb14b4SPaul Moore return audit_buf; 699afeb14b4SPaul Moore } 700afeb14b4SPaul Moore 7012e71029eSTetsuo Handa static inline void xfrm_audit_helper_usrinfo(bool task_valid, 702afeb14b4SPaul Moore struct audit_buffer *audit_buf) 703afeb14b4SPaul Moore { 7042e71029eSTetsuo Handa const unsigned int auid = from_kuid(&init_user_ns, task_valid ? 7052e71029eSTetsuo Handa audit_get_loginuid(current) : 7062e71029eSTetsuo Handa INVALID_UID); 7072e71029eSTetsuo Handa const unsigned int ses = task_valid ? audit_get_sessionid(current) : 708f0b75216SRichard Guy Briggs AUDIT_SID_UNSET; 7092e71029eSTetsuo Handa 7102e71029eSTetsuo Handa audit_log_format(audit_buf, " auid=%u ses=%u", auid, ses); 711ab5f5e8bSJoy Latten audit_log_task_context(audit_buf); 712ab5f5e8bSJoy Latten } 713ab5f5e8bSJoy Latten 7142e71029eSTetsuo Handa void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, bool task_valid); 7152e71029eSTetsuo Handa void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result, 7162e71029eSTetsuo Handa bool task_valid); 7172e71029eSTetsuo Handa void xfrm_audit_state_add(struct xfrm_state *x, int result, bool task_valid); 7182e71029eSTetsuo Handa void xfrm_audit_state_delete(struct xfrm_state *x, int result, bool task_valid); 719d511337aSJoe Perches void xfrm_audit_state_replay_overflow(struct xfrm_state *x, 720afeb14b4SPaul Moore struct sk_buff *skb); 721d511337aSJoe Perches void xfrm_audit_state_replay(struct xfrm_state *x, struct sk_buff *skb, 722d511337aSJoe Perches __be32 net_seq); 723d511337aSJoe Perches void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family); 724d511337aSJoe Perches void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, __be32 net_spi, 725d511337aSJoe Perches __be32 net_seq); 726d511337aSJoe Perches void xfrm_audit_state_icvfail(struct xfrm_state *x, struct sk_buff *skb, 727d511337aSJoe Perches u8 proto); 728c9204d9cSJoy Latten #else 72941fef0eeSMarcin Slusarz 73041fef0eeSMarcin Slusarz static inline void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, 7312e71029eSTetsuo Handa bool task_valid) 73241fef0eeSMarcin Slusarz { 73341fef0eeSMarcin Slusarz } 73441fef0eeSMarcin Slusarz 73541fef0eeSMarcin Slusarz static inline void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result, 7362e71029eSTetsuo Handa bool task_valid) 73741fef0eeSMarcin Slusarz { 73841fef0eeSMarcin Slusarz } 73941fef0eeSMarcin Slusarz 74041fef0eeSMarcin Slusarz static inline void xfrm_audit_state_add(struct xfrm_state *x, int result, 7412e71029eSTetsuo Handa bool task_valid) 74241fef0eeSMarcin Slusarz { 74341fef0eeSMarcin Slusarz } 74441fef0eeSMarcin Slusarz 74541fef0eeSMarcin Slusarz static inline void xfrm_audit_state_delete(struct xfrm_state *x, int result, 7462e71029eSTetsuo Handa bool task_valid) 74741fef0eeSMarcin Slusarz { 74841fef0eeSMarcin Slusarz } 74941fef0eeSMarcin Slusarz 75041fef0eeSMarcin Slusarz static inline void xfrm_audit_state_replay_overflow(struct xfrm_state *x, 75141fef0eeSMarcin Slusarz struct sk_buff *skb) 75241fef0eeSMarcin Slusarz { 75341fef0eeSMarcin Slusarz } 75441fef0eeSMarcin Slusarz 7559fdc4883SSteffen Klassert static inline void xfrm_audit_state_replay(struct xfrm_state *x, 7569fdc4883SSteffen Klassert struct sk_buff *skb, __be32 net_seq) 7579fdc4883SSteffen Klassert { 7589fdc4883SSteffen Klassert } 7599fdc4883SSteffen Klassert 76041fef0eeSMarcin Slusarz static inline void xfrm_audit_state_notfound_simple(struct sk_buff *skb, 76141fef0eeSMarcin Slusarz u16 family) 76241fef0eeSMarcin Slusarz { 76341fef0eeSMarcin Slusarz } 76441fef0eeSMarcin Slusarz 76541fef0eeSMarcin Slusarz static inline void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, 76641fef0eeSMarcin Slusarz __be32 net_spi, __be32 net_seq) 76741fef0eeSMarcin Slusarz { 76841fef0eeSMarcin Slusarz } 76941fef0eeSMarcin Slusarz 77041fef0eeSMarcin Slusarz static inline void xfrm_audit_state_icvfail(struct xfrm_state *x, 77141fef0eeSMarcin Slusarz struct sk_buff *skb, u8 proto) 77241fef0eeSMarcin Slusarz { 77341fef0eeSMarcin Slusarz } 774c9204d9cSJoy Latten #endif /* CONFIG_AUDITSYSCALL */ 775161a09e7SJoy Latten 7761da177e4SLinus Torvalds static inline void xfrm_pol_hold(struct xfrm_policy *policy) 7771da177e4SLinus Torvalds { 7781da177e4SLinus Torvalds if (likely(policy != NULL)) 779850a6212SReshetova, Elena refcount_inc(&policy->refcnt); 7801da177e4SLinus Torvalds } 7811da177e4SLinus Torvalds 782d511337aSJoe Perches void xfrm_policy_destroy(struct xfrm_policy *policy); 7831da177e4SLinus Torvalds 7841da177e4SLinus Torvalds static inline void xfrm_pol_put(struct xfrm_policy *policy) 7851da177e4SLinus Torvalds { 786850a6212SReshetova, Elena if (refcount_dec_and_test(&policy->refcnt)) 78764c31b3fSWANG Cong xfrm_policy_destroy(policy); 7881da177e4SLinus Torvalds } 7891da177e4SLinus Torvalds 7904e81bb83SMasahide NAKAMURA static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols) 7914e81bb83SMasahide NAKAMURA { 7924e81bb83SMasahide NAKAMURA int i; 7934e81bb83SMasahide NAKAMURA for (i = npols - 1; i >= 0; --i) 7944e81bb83SMasahide NAKAMURA xfrm_pol_put(pols[i]); 7954e81bb83SMasahide NAKAMURA } 7964e81bb83SMasahide NAKAMURA 797f75a2804SCong Wang void __xfrm_state_destroy(struct xfrm_state *, bool); 7981da177e4SLinus Torvalds 79921380b81SHerbert Xu static inline void __xfrm_state_put(struct xfrm_state *x) 80021380b81SHerbert Xu { 80188755e9cSReshetova, Elena refcount_dec(&x->refcnt); 80221380b81SHerbert Xu } 80321380b81SHerbert Xu 8041da177e4SLinus Torvalds static inline void xfrm_state_put(struct xfrm_state *x) 8051da177e4SLinus Torvalds { 80688755e9cSReshetova, Elena if (refcount_dec_and_test(&x->refcnt)) 807f75a2804SCong Wang __xfrm_state_destroy(x, false); 808f75a2804SCong Wang } 809f75a2804SCong Wang 810f75a2804SCong Wang static inline void xfrm_state_put_sync(struct xfrm_state *x) 811f75a2804SCong Wang { 812f75a2804SCong Wang if (refcount_dec_and_test(&x->refcnt)) 813f75a2804SCong Wang __xfrm_state_destroy(x, true); 8141da177e4SLinus Torvalds } 8151da177e4SLinus Torvalds 8161da177e4SLinus Torvalds static inline void xfrm_state_hold(struct xfrm_state *x) 8171da177e4SLinus Torvalds { 81888755e9cSReshetova, Elena refcount_inc(&x->refcnt); 8191da177e4SLinus Torvalds } 8201da177e4SLinus Torvalds 8211744a8feSDavid S. Miller static inline bool addr_match(const void *token1, const void *token2, 822e1b0048eSAlexey Dobriyan unsigned int prefixlen) 8231da177e4SLinus Torvalds { 8241744a8feSDavid S. Miller const __be32 *a1 = token1; 8251744a8feSDavid S. Miller const __be32 *a2 = token2; 826e1b0048eSAlexey Dobriyan unsigned int pdw; 827e1b0048eSAlexey Dobriyan unsigned int pbi; 8281da177e4SLinus Torvalds 829a6337463Sjamal pdw = prefixlen >> 5; /* num of whole u32 in prefix */ 8301da177e4SLinus Torvalds pbi = prefixlen & 0x1f; /* num of bits in incomplete u32 in prefix */ 8311da177e4SLinus Torvalds 8321da177e4SLinus Torvalds if (pdw) 8331da177e4SLinus Torvalds if (memcmp(a1, a2, pdw << 2)) 8341744a8feSDavid S. Miller return false; 8351da177e4SLinus Torvalds 8361da177e4SLinus Torvalds if (pbi) { 8375f19343fSAl Viro __be32 mask; 8381da177e4SLinus Torvalds 8391da177e4SLinus Torvalds mask = htonl((0xffffffff) << (32 - pbi)); 8401da177e4SLinus Torvalds 8411da177e4SLinus Torvalds if ((a1[pdw] ^ a2[pdw]) & mask) 8421744a8feSDavid S. Miller return false; 8431da177e4SLinus Torvalds } 8441da177e4SLinus Torvalds 8451744a8feSDavid S. Miller return true; 8461da177e4SLinus Torvalds } 8471da177e4SLinus Torvalds 84826bff940SAlexey Dobriyan static inline bool addr4_match(__be32 a1, __be32 a2, u8 prefixlen) 84926bff940SAlexey Dobriyan { 85026bff940SAlexey Dobriyan /* C99 6.5.7 (3): u32 << 32 is undefined behaviour */ 8516c786bcbSAlexey Dobriyan if (sizeof(long) == 4 && prefixlen == 0) 85226bff940SAlexey Dobriyan return true; 8536c786bcbSAlexey Dobriyan return !((a1 ^ a2) & htonl(~0UL << (32 - prefixlen))); 85426bff940SAlexey Dobriyan } 85526bff940SAlexey Dobriyan 8561da177e4SLinus Torvalds static __inline__ 8576281dcc9SDavid S. Miller __be16 xfrm_flowi_sport(const struct flowi *fl, const union flowi_uli *uli) 8581da177e4SLinus Torvalds { 859f9d07e41SAl Viro __be16 port; 8601d28f42cSDavid S. Miller switch(fl->flowi_proto) { 8611da177e4SLinus Torvalds case IPPROTO_TCP: 8621da177e4SLinus Torvalds case IPPROTO_UDP: 863ba4e58ecSGerrit Renker case IPPROTO_UDPLITE: 8641da177e4SLinus Torvalds case IPPROTO_SCTP: 8656281dcc9SDavid S. Miller port = uli->ports.sport; 8661da177e4SLinus Torvalds break; 8671da177e4SLinus Torvalds case IPPROTO_ICMP: 8681da177e4SLinus Torvalds case IPPROTO_ICMPV6: 8696281dcc9SDavid S. Miller port = htons(uli->icmpt.type); 8701da177e4SLinus Torvalds break; 8712ce4272aSMasahide NAKAMURA case IPPROTO_MH: 8726281dcc9SDavid S. Miller port = htons(uli->mht.type); 8732ce4272aSMasahide NAKAMURA break; 874cc9ff19dSTimo Teräs case IPPROTO_GRE: 8756281dcc9SDavid S. Miller port = htons(ntohl(uli->gre_key) >> 16); 876cc9ff19dSTimo Teräs break; 8771da177e4SLinus Torvalds default: 8781da177e4SLinus Torvalds port = 0; /*XXX*/ 8791da177e4SLinus Torvalds } 8801da177e4SLinus Torvalds return port; 8811da177e4SLinus Torvalds } 8821da177e4SLinus Torvalds 8831da177e4SLinus Torvalds static __inline__ 8846281dcc9SDavid S. Miller __be16 xfrm_flowi_dport(const struct flowi *fl, const union flowi_uli *uli) 8851da177e4SLinus Torvalds { 886f9d07e41SAl Viro __be16 port; 8871d28f42cSDavid S. Miller switch(fl->flowi_proto) { 8881da177e4SLinus Torvalds case IPPROTO_TCP: 8891da177e4SLinus Torvalds case IPPROTO_UDP: 890ba4e58ecSGerrit Renker case IPPROTO_UDPLITE: 8911da177e4SLinus Torvalds case IPPROTO_SCTP: 8926281dcc9SDavid S. Miller port = uli->ports.dport; 8931da177e4SLinus Torvalds break; 8941da177e4SLinus Torvalds case IPPROTO_ICMP: 8951da177e4SLinus Torvalds case IPPROTO_ICMPV6: 8966281dcc9SDavid S. Miller port = htons(uli->icmpt.code); 8971da177e4SLinus Torvalds break; 898cc9ff19dSTimo Teräs case IPPROTO_GRE: 8996281dcc9SDavid S. Miller port = htons(ntohl(uli->gre_key) & 0xffff); 900cc9ff19dSTimo Teräs break; 9011da177e4SLinus Torvalds default: 9021da177e4SLinus Torvalds port = 0; /*XXX*/ 9031da177e4SLinus Torvalds } 9041da177e4SLinus Torvalds return port; 9051da177e4SLinus Torvalds } 9061da177e4SLinus Torvalds 907d511337aSJoe Perches bool xfrm_selector_match(const struct xfrm_selector *sel, 908d511337aSJoe Perches const struct flowi *fl, unsigned short family); 9091da177e4SLinus Torvalds 910df71837dSTrent Jaeger #ifdef CONFIG_SECURITY_NETWORK_XFRM 911df71837dSTrent Jaeger /* If neither has a context --> match 912df71837dSTrent Jaeger * Otherwise, both must have a context and the sids, doi, alg must match 913df71837dSTrent Jaeger */ 914bc9b35adSDavid S. Miller static inline bool xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2) 915df71837dSTrent Jaeger { 916df71837dSTrent Jaeger return ((!s1 && !s2) || 917df71837dSTrent Jaeger (s1 && s2 && 918df71837dSTrent Jaeger (s1->ctx_sid == s2->ctx_sid) && 919df71837dSTrent Jaeger (s1->ctx_doi == s2->ctx_doi) && 920df71837dSTrent Jaeger (s1->ctx_alg == s2->ctx_alg))); 921df71837dSTrent Jaeger } 922df71837dSTrent Jaeger #else 923bc9b35adSDavid S. Miller static inline bool xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2) 924df71837dSTrent Jaeger { 925bc9b35adSDavid S. Miller return true; 926df71837dSTrent Jaeger } 927df71837dSTrent Jaeger #endif 928df71837dSTrent Jaeger 9291da177e4SLinus Torvalds /* A struct encoding bundle of transformations to apply to some set of flow. 9301da177e4SLinus Torvalds * 931b6ca8bd5SDavid Miller * xdst->child points to the next element of bundle. 9321da177e4SLinus Torvalds * dst->xfrm points to an instanse of transformer. 9331da177e4SLinus Torvalds * 9341da177e4SLinus Torvalds * Due to unfortunate limitations of current routing cache, which we 9351da177e4SLinus Torvalds * have no time to fix, it mirrors struct rtable and bound to the same 9361da177e4SLinus Torvalds * routing key, including saddr,daddr. However, we can have many of 9371da177e4SLinus Torvalds * bundles differing by session id. All the bundles grow from a parent 9381da177e4SLinus Torvalds * policy rule. 9391da177e4SLinus Torvalds */ 940fd2c3ef7SEric Dumazet struct xfrm_dst { 9411da177e4SLinus Torvalds union { 9421da177e4SLinus Torvalds struct dst_entry dst; 9431da177e4SLinus Torvalds struct rtable rt; 9441da177e4SLinus Torvalds struct rt6_info rt6; 9451da177e4SLinus Torvalds } u; 9461da177e4SLinus Torvalds struct dst_entry *route; 947b6ca8bd5SDavid Miller struct dst_entry *child; 9480f6c480fSDavid Miller struct dst_entry *path; 94980c802f3STimo Teräs struct xfrm_policy *pols[XFRM_POLICY_TYPE_MAX]; 95080c802f3STimo Teräs int num_pols, num_xfrms; 95180c802f3STimo Teräs u32 xfrm_genid; 95280c802f3STimo Teräs u32 policy_genid; 9531da177e4SLinus Torvalds u32 route_mtu_cached; 9541da177e4SLinus Torvalds u32 child_mtu_cached; 95592d63decSHideaki YOSHIFUJI u32 route_cookie; 95692d63decSHideaki YOSHIFUJI u32 path_cookie; 9571da177e4SLinus Torvalds }; 9581da177e4SLinus Torvalds 9590f6c480fSDavid Miller static inline struct dst_entry *xfrm_dst_path(const struct dst_entry *dst) 9600f6c480fSDavid Miller { 9610f6c480fSDavid Miller #ifdef CONFIG_XFRM 962101dde42SSteffen Klassert if (dst->xfrm || (dst->flags & DST_XFRM_QUEUE)) { 9630f6c480fSDavid Miller const struct xfrm_dst *xdst = (const struct xfrm_dst *) dst; 9640f6c480fSDavid Miller 9650f6c480fSDavid Miller return xdst->path; 9660f6c480fSDavid Miller } 9670f6c480fSDavid Miller #endif 9680f6c480fSDavid Miller return (struct dst_entry *) dst; 9690f6c480fSDavid Miller } 9700f6c480fSDavid Miller 971b92cf4aaSDavid Miller static inline struct dst_entry *xfrm_dst_child(const struct dst_entry *dst) 972b92cf4aaSDavid Miller { 973b92cf4aaSDavid Miller #ifdef CONFIG_XFRM 974101dde42SSteffen Klassert if (dst->xfrm || (dst->flags & DST_XFRM_QUEUE)) { 975b6ca8bd5SDavid Miller struct xfrm_dst *xdst = (struct xfrm_dst *) dst; 976b6ca8bd5SDavid Miller return xdst->child; 977b6ca8bd5SDavid Miller } 978b92cf4aaSDavid Miller #endif 979b92cf4aaSDavid Miller return NULL; 980b92cf4aaSDavid Miller } 981b92cf4aaSDavid Miller 982def8b4faSAlexey Dobriyan #ifdef CONFIG_XFRM 98345b018beSDavid Miller static inline void xfrm_dst_set_child(struct xfrm_dst *xdst, struct dst_entry *child) 98445b018beSDavid Miller { 985b6ca8bd5SDavid Miller xdst->child = child; 98645b018beSDavid Miller } 98745b018beSDavid Miller 988aabc9761SHerbert Xu static inline void xfrm_dst_destroy(struct xfrm_dst *xdst) 989aabc9761SHerbert Xu { 99080c802f3STimo Teräs xfrm_pols_put(xdst->pols, xdst->num_pols); 991aabc9761SHerbert Xu dst_release(xdst->route); 992aabc9761SHerbert Xu if (likely(xdst->u.dst.xfrm)) 993aabc9761SHerbert Xu xfrm_state_put(xdst->u.dst.xfrm); 994aabc9761SHerbert Xu } 995def8b4faSAlexey Dobriyan #endif 996aabc9761SHerbert Xu 997d511337aSJoe Perches void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev); 998aabc9761SHerbert Xu 999f203b76dSSteffen Klassert struct xfrm_if_parms { 1000f203b76dSSteffen Klassert int link; /* ifindex of underlying L2 interface */ 1001f203b76dSSteffen Klassert u32 if_id; /* interface identifyer */ 1002abc340b3SEyal Birger bool collect_md; 1003f203b76dSSteffen Klassert }; 1004f203b76dSSteffen Klassert 1005f203b76dSSteffen Klassert struct xfrm_if { 1006f203b76dSSteffen Klassert struct xfrm_if __rcu *next; /* next interface in list */ 1007f203b76dSSteffen Klassert struct net_device *dev; /* virtual device associated with interface */ 1008f203b76dSSteffen Klassert struct net *net; /* netns for packet i/o */ 1009f203b76dSSteffen Klassert struct xfrm_if_parms p; /* interface parms */ 1010f203b76dSSteffen Klassert 1011f203b76dSSteffen Klassert struct gro_cells gro_cells; 1012f203b76dSSteffen Klassert }; 1013f203b76dSSteffen Klassert 101454ef207aSSteffen Klassert struct xfrm_offload { 101554ef207aSSteffen Klassert /* Output sequence number for replay protection on offloading. */ 101654ef207aSSteffen Klassert struct { 101754ef207aSSteffen Klassert __u32 low; 101854ef207aSSteffen Klassert __u32 hi; 101954ef207aSSteffen Klassert } seq; 102054ef207aSSteffen Klassert 102154ef207aSSteffen Klassert __u32 flags; 102254ef207aSSteffen Klassert #define SA_DELETE_REQ 1 102354ef207aSSteffen Klassert #define CRYPTO_DONE 2 102454ef207aSSteffen Klassert #define CRYPTO_NEXT_DONE 4 102554ef207aSSteffen Klassert #define CRYPTO_FALLBACK 8 102654ef207aSSteffen Klassert #define XFRM_GSO_SEGMENT 16 102754ef207aSSteffen Klassert #define XFRM_GRO 32 1028b01a277aSLeon Romanovsky /* 64 is free */ 1029f53c7239SSteffen Klassert #define XFRM_DEV_RESUME 128 103094579ac3SHuy Nguyen #define XFRM_XMIT 256 103154ef207aSSteffen Klassert 103254ef207aSSteffen Klassert __u32 status; 103354ef207aSSteffen Klassert #define CRYPTO_SUCCESS 1 103454ef207aSSteffen Klassert #define CRYPTO_GENERIC_ERROR 2 103554ef207aSSteffen Klassert #define CRYPTO_TRANSPORT_AH_AUTH_FAILED 4 103654ef207aSSteffen Klassert #define CRYPTO_TRANSPORT_ESP_AUTH_FAILED 8 103754ef207aSSteffen Klassert #define CRYPTO_TUNNEL_AH_AUTH_FAILED 16 103854ef207aSSteffen Klassert #define CRYPTO_TUNNEL_ESP_AUTH_FAILED 32 103954ef207aSSteffen Klassert #define CRYPTO_INVALID_PACKET_SYNTAX 64 104054ef207aSSteffen Klassert #define CRYPTO_INVALID_PROTOCOL 128 104154ef207aSSteffen Klassert 104254ef207aSSteffen Klassert __u8 proto; 1043fa453523SHuy Nguyen __u8 inner_ipproto; 104454ef207aSSteffen Klassert }; 104554ef207aSSteffen Klassert 1046fd2c3ef7SEric Dumazet struct sec_path { 10471da177e4SLinus Torvalds int len; 104854ef207aSSteffen Klassert int olen; 104954ef207aSSteffen Klassert 1050dbe5b4aaSHerbert Xu struct xfrm_state *xvec[XFRM_MAX_DEPTH]; 105154ef207aSSteffen Klassert struct xfrm_offload ovec[XFRM_MAX_OFFLOAD_DEPTH]; 10521da177e4SLinus Torvalds }; 10531da177e4SLinus Torvalds 10540ca64da1SFlorian Westphal struct sec_path *secpath_set(struct sk_buff *skb); 10551da177e4SLinus Torvalds 10561da177e4SLinus Torvalds static inline void 10571da177e4SLinus Torvalds secpath_reset(struct sk_buff *skb) 10581da177e4SLinus Torvalds { 10591da177e4SLinus Torvalds #ifdef CONFIG_XFRM 10604165079bSFlorian Westphal skb_ext_del(skb, SKB_EXT_SEC_PATH); 10611da177e4SLinus Torvalds #endif 10621da177e4SLinus Torvalds } 10631da177e4SLinus Torvalds 10641da177e4SLinus Torvalds static inline int 10656cc32961SDavid S. Miller xfrm_addr_any(const xfrm_address_t *addr, unsigned short family) 1066a1e59abfSPatrick McHardy { 1067a1e59abfSPatrick McHardy switch (family) { 1068a1e59abfSPatrick McHardy case AF_INET: 1069a1e59abfSPatrick McHardy return addr->a4 == 0; 1070a1e59abfSPatrick McHardy case AF_INET6: 107115e318bdSJiri Benc return ipv6_addr_any(&addr->in6); 1072a1e59abfSPatrick McHardy } 1073a1e59abfSPatrick McHardy return 0; 1074a1e59abfSPatrick McHardy } 1075a1e59abfSPatrick McHardy 1076a1e59abfSPatrick McHardy static inline int 107721eddb5cSDavid S. Miller __xfrm4_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x) 10781da177e4SLinus Torvalds { 10791da177e4SLinus Torvalds return (tmpl->saddr.a4 && 10801da177e4SLinus Torvalds tmpl->saddr.a4 != x->props.saddr.a4); 10811da177e4SLinus Torvalds } 10821da177e4SLinus Torvalds 10831da177e4SLinus Torvalds static inline int 108421eddb5cSDavid S. Miller __xfrm6_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x) 10851da177e4SLinus Torvalds { 10861da177e4SLinus Torvalds return (!ipv6_addr_any((struct in6_addr*)&tmpl->saddr) && 1087ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 !ipv6_addr_equal((struct in6_addr *)&tmpl->saddr, (struct in6_addr*)&x->props.saddr)); 10881da177e4SLinus Torvalds } 10891da177e4SLinus Torvalds 10901da177e4SLinus Torvalds static inline int 109121eddb5cSDavid S. Miller xfrm_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x, unsigned short family) 10921da177e4SLinus Torvalds { 10931da177e4SLinus Torvalds switch (family) { 10941da177e4SLinus Torvalds case AF_INET: 10951da177e4SLinus Torvalds return __xfrm4_state_addr_cmp(tmpl, x); 10961da177e4SLinus Torvalds case AF_INET6: 10971da177e4SLinus Torvalds return __xfrm6_state_addr_cmp(tmpl, x); 10981da177e4SLinus Torvalds } 10991da177e4SLinus Torvalds return !0; 11001da177e4SLinus Torvalds } 11011da177e4SLinus Torvalds 11021da177e4SLinus Torvalds #ifdef CONFIG_XFRM 1103d511337aSJoe Perches int __xfrm_policy_check(struct sock *, int dir, struct sk_buff *skb, 1104d511337aSJoe Perches unsigned short family); 11051da177e4SLinus Torvalds 1106b58b1f56SNicolas Dichtel static inline bool __xfrm_check_nopolicy(struct net *net, struct sk_buff *skb, 1107b58b1f56SNicolas Dichtel int dir) 1108b58b1f56SNicolas Dichtel { 1109b58b1f56SNicolas Dichtel if (!net->xfrm.policy_count[dir] && !secpath_exists(skb)) 1110b58b1f56SNicolas Dichtel return net->xfrm.policy_default[dir] == XFRM_USERPOLICY_ACCEPT; 1111b58b1f56SNicolas Dichtel 1112b58b1f56SNicolas Dichtel return false; 1113b58b1f56SNicolas Dichtel } 1114b58b1f56SNicolas Dichtel 1115e6175a2eSEyal Birger static inline bool __xfrm_check_dev_nopolicy(struct sk_buff *skb, 1116e6175a2eSEyal Birger int dir, unsigned short family) 1117e6175a2eSEyal Birger { 1118e6175a2eSEyal Birger if (dir != XFRM_POLICY_OUT && family == AF_INET) { 1119e6175a2eSEyal Birger /* same dst may be used for traffic originating from 1120e6175a2eSEyal Birger * devices with different policy settings. 1121e6175a2eSEyal Birger */ 1122e6175a2eSEyal Birger return IPCB(skb)->flags & IPSKB_NOPOLICY; 1123e6175a2eSEyal Birger } 1124e6175a2eSEyal Birger return skb_dst(skb) && (skb_dst(skb)->flags & DST_NOPOLICY); 1125e6175a2eSEyal Birger } 1126e6175a2eSEyal Birger 1127d5422efeSHerbert Xu static inline int __xfrm_policy_check2(struct sock *sk, int dir, 1128d5422efeSHerbert Xu struct sk_buff *skb, 1129d5422efeSHerbert Xu unsigned int family, int reverse) 11301da177e4SLinus Torvalds { 1131f6e1e25dSAlexey Dobriyan struct net *net = dev_net(skb->dev); 1132d5422efeSHerbert Xu int ndir = dir | (reverse ? XFRM_POLICY_MASK + 1 : 0); 1133d5422efeSHerbert Xu 11341da177e4SLinus Torvalds if (sk && sk->sk_policy[XFRM_POLICY_IN]) 1135d5422efeSHerbert Xu return __xfrm_policy_check(sk, ndir, skb, family); 11361da177e4SLinus Torvalds 1137b58b1f56SNicolas Dichtel return __xfrm_check_nopolicy(net, skb, dir) || 1138e6175a2eSEyal Birger __xfrm_check_dev_nopolicy(skb, dir, family) || 1139d5422efeSHerbert Xu __xfrm_policy_check(sk, ndir, skb, family); 1140d5422efeSHerbert Xu } 1141d5422efeSHerbert Xu 1142d5422efeSHerbert Xu static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) 1143d5422efeSHerbert Xu { 1144d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, family, 0); 11451da177e4SLinus Torvalds } 11461da177e4SLinus Torvalds 11471da177e4SLinus Torvalds static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 11481da177e4SLinus Torvalds { 11491da177e4SLinus Torvalds return xfrm_policy_check(sk, dir, skb, AF_INET); 11501da177e4SLinus Torvalds } 11511da177e4SLinus Torvalds 11521da177e4SLinus Torvalds static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 11531da177e4SLinus Torvalds { 11541da177e4SLinus Torvalds return xfrm_policy_check(sk, dir, skb, AF_INET6); 11551da177e4SLinus Torvalds } 11561da177e4SLinus Torvalds 1157d5422efeSHerbert Xu static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir, 1158d5422efeSHerbert Xu struct sk_buff *skb) 1159d5422efeSHerbert Xu { 1160d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, AF_INET, 1); 1161d5422efeSHerbert Xu } 1162d5422efeSHerbert Xu 1163d5422efeSHerbert Xu static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, 1164d5422efeSHerbert Xu struct sk_buff *skb) 1165d5422efeSHerbert Xu { 1166d5422efeSHerbert Xu return __xfrm_policy_check2(sk, dir, skb, AF_INET6, 1); 1167d5422efeSHerbert Xu } 1168d5422efeSHerbert Xu 1169d511337aSJoe Perches int __xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, 1170d5422efeSHerbert Xu unsigned int family, int reverse); 1171d5422efeSHerbert Xu 1172d5422efeSHerbert Xu static inline int xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, 1173d5422efeSHerbert Xu unsigned int family) 1174d5422efeSHerbert Xu { 1175d5422efeSHerbert Xu return __xfrm_decode_session(skb, fl, family, 0); 1176d5422efeSHerbert Xu } 1177d5422efeSHerbert Xu 1178d5422efeSHerbert Xu static inline int xfrm_decode_session_reverse(struct sk_buff *skb, 1179d5422efeSHerbert Xu struct flowi *fl, 1180d5422efeSHerbert Xu unsigned int family) 1181d5422efeSHerbert Xu { 1182d5422efeSHerbert Xu return __xfrm_decode_session(skb, fl, family, 1); 1183d5422efeSHerbert Xu } 1184d5422efeSHerbert Xu 1185d511337aSJoe Perches int __xfrm_route_forward(struct sk_buff *skb, unsigned short family); 11861da177e4SLinus Torvalds 11871da177e4SLinus Torvalds static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family) 11881da177e4SLinus Torvalds { 118999a66657SAlexey Dobriyan struct net *net = dev_net(skb->dev); 119099a66657SAlexey Dobriyan 1191b58b1f56SNicolas Dichtel if (!net->xfrm.policy_count[XFRM_POLICY_OUT] && 1192b58b1f56SNicolas Dichtel net->xfrm.policy_default[XFRM_POLICY_OUT] == XFRM_USERPOLICY_ACCEPT) 1193b58b1f56SNicolas Dichtel return true; 1194b58b1f56SNicolas Dichtel 11952d151d39SSteffen Klassert return (skb_dst(skb)->flags & DST_NOXFRM) || 11962d151d39SSteffen Klassert __xfrm_route_forward(skb, family); 11971da177e4SLinus Torvalds } 11981da177e4SLinus Torvalds 11991da177e4SLinus Torvalds static inline int xfrm4_route_forward(struct sk_buff *skb) 12001da177e4SLinus Torvalds { 12011da177e4SLinus Torvalds return xfrm_route_forward(skb, AF_INET); 12021da177e4SLinus Torvalds } 12031da177e4SLinus Torvalds 12041da177e4SLinus Torvalds static inline int xfrm6_route_forward(struct sk_buff *skb) 12051da177e4SLinus Torvalds { 12061da177e4SLinus Torvalds return xfrm_route_forward(skb, AF_INET6); 12071da177e4SLinus Torvalds } 12081da177e4SLinus Torvalds 1209d188ba86SEric Dumazet int __xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk); 12101da177e4SLinus Torvalds 1211d188ba86SEric Dumazet static inline int xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk) 12121da177e4SLinus Torvalds { 1213e22aa148Ssewookseo if (!sk_fullsock(osk)) 1214e22aa148Ssewookseo return 0; 1215d188ba86SEric Dumazet sk->sk_policy[0] = NULL; 1216d188ba86SEric Dumazet sk->sk_policy[1] = NULL; 1217d188ba86SEric Dumazet if (unlikely(osk->sk_policy[0] || osk->sk_policy[1])) 1218d188ba86SEric Dumazet return __xfrm_sk_clone_policy(sk, osk); 12191da177e4SLinus Torvalds return 0; 12201da177e4SLinus Torvalds } 12211da177e4SLinus Torvalds 1222d511337aSJoe Perches int xfrm_policy_delete(struct xfrm_policy *pol, int dir); 12231da177e4SLinus Torvalds 12241da177e4SLinus Torvalds static inline void xfrm_sk_free_policy(struct sock *sk) 12251da177e4SLinus Torvalds { 1226d188ba86SEric Dumazet struct xfrm_policy *pol; 1227d188ba86SEric Dumazet 1228d188ba86SEric Dumazet pol = rcu_dereference_protected(sk->sk_policy[0], 1); 1229d188ba86SEric Dumazet if (unlikely(pol != NULL)) { 1230d188ba86SEric Dumazet xfrm_policy_delete(pol, XFRM_POLICY_MAX); 12311da177e4SLinus Torvalds sk->sk_policy[0] = NULL; 12321da177e4SLinus Torvalds } 1233d188ba86SEric Dumazet pol = rcu_dereference_protected(sk->sk_policy[1], 1); 1234d188ba86SEric Dumazet if (unlikely(pol != NULL)) { 1235d188ba86SEric Dumazet xfrm_policy_delete(pol, XFRM_POLICY_MAX+1); 12361da177e4SLinus Torvalds sk->sk_policy[1] = NULL; 12371da177e4SLinus Torvalds } 12381da177e4SLinus Torvalds } 12391da177e4SLinus Torvalds 12401da177e4SLinus Torvalds #else 12411da177e4SLinus Torvalds 12421da177e4SLinus Torvalds static inline void xfrm_sk_free_policy(struct sock *sk) {} 1243d188ba86SEric Dumazet static inline int xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk) { return 0; } 12441da177e4SLinus Torvalds static inline int xfrm6_route_forward(struct sk_buff *skb) { return 1; } 12451da177e4SLinus Torvalds static inline int xfrm4_route_forward(struct sk_buff *skb) { return 1; } 12461da177e4SLinus Torvalds static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 12471da177e4SLinus Torvalds { 12481da177e4SLinus Torvalds return 1; 12491da177e4SLinus Torvalds } 12501da177e4SLinus Torvalds static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) 12511da177e4SLinus Torvalds { 12521da177e4SLinus Torvalds return 1; 12531da177e4SLinus Torvalds } 12541da177e4SLinus Torvalds static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) 12551da177e4SLinus Torvalds { 12561da177e4SLinus Torvalds return 1; 12571da177e4SLinus Torvalds } 1258d5422efeSHerbert Xu static inline int xfrm_decode_session_reverse(struct sk_buff *skb, 1259d5422efeSHerbert Xu struct flowi *fl, 1260d5422efeSHerbert Xu unsigned int family) 1261d5422efeSHerbert Xu { 1262d5422efeSHerbert Xu return -ENOSYS; 1263d5422efeSHerbert Xu } 1264d5422efeSHerbert Xu static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir, 1265d5422efeSHerbert Xu struct sk_buff *skb) 1266d5422efeSHerbert Xu { 1267d5422efeSHerbert Xu return 1; 1268d5422efeSHerbert Xu } 1269d5422efeSHerbert Xu static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, 1270d5422efeSHerbert Xu struct sk_buff *skb) 1271d5422efeSHerbert Xu { 1272d5422efeSHerbert Xu return 1; 1273d5422efeSHerbert Xu } 12741da177e4SLinus Torvalds #endif 12751da177e4SLinus Torvalds 12761da177e4SLinus Torvalds static __inline__ 1277e8a4e377SDavid S. Miller xfrm_address_t *xfrm_flowi_daddr(const struct flowi *fl, unsigned short family) 12781da177e4SLinus Torvalds { 12791da177e4SLinus Torvalds switch (family){ 12801da177e4SLinus Torvalds case AF_INET: 12817e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip4.daddr; 12821da177e4SLinus Torvalds case AF_INET6: 12837e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip6.daddr; 12841da177e4SLinus Torvalds } 12851da177e4SLinus Torvalds return NULL; 12861da177e4SLinus Torvalds } 12871da177e4SLinus Torvalds 12881da177e4SLinus Torvalds static __inline__ 1289e8a4e377SDavid S. Miller xfrm_address_t *xfrm_flowi_saddr(const struct flowi *fl, unsigned short family) 12901da177e4SLinus Torvalds { 12911da177e4SLinus Torvalds switch (family){ 12921da177e4SLinus Torvalds case AF_INET: 12937e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip4.saddr; 12941da177e4SLinus Torvalds case AF_INET6: 12957e1dc7b6SDavid S. Miller return (xfrm_address_t *)&fl->u.ip6.saddr; 12961da177e4SLinus Torvalds } 12971da177e4SLinus Torvalds return NULL; 12981da177e4SLinus Torvalds } 12991da177e4SLinus Torvalds 13009bb182a7SYOSHIFUJI Hideaki static __inline__ 1301e8a4e377SDavid S. Miller void xfrm_flowi_addr_get(const struct flowi *fl, 13029bb182a7SYOSHIFUJI Hideaki xfrm_address_t *saddr, xfrm_address_t *daddr, 13039bb182a7SYOSHIFUJI Hideaki unsigned short family) 13049bb182a7SYOSHIFUJI Hideaki { 13059bb182a7SYOSHIFUJI Hideaki switch(family) { 13069bb182a7SYOSHIFUJI Hideaki case AF_INET: 13077e1dc7b6SDavid S. Miller memcpy(&saddr->a4, &fl->u.ip4.saddr, sizeof(saddr->a4)); 13087e1dc7b6SDavid S. Miller memcpy(&daddr->a4, &fl->u.ip4.daddr, sizeof(daddr->a4)); 13099bb182a7SYOSHIFUJI Hideaki break; 13109bb182a7SYOSHIFUJI Hideaki case AF_INET6: 131115e318bdSJiri Benc saddr->in6 = fl->u.ip6.saddr; 131215e318bdSJiri Benc daddr->in6 = fl->u.ip6.daddr; 13139bb182a7SYOSHIFUJI Hideaki break; 13149bb182a7SYOSHIFUJI Hideaki } 13159bb182a7SYOSHIFUJI Hideaki } 13169bb182a7SYOSHIFUJI Hideaki 13171da177e4SLinus Torvalds static __inline__ int 1318f8848067SDavid S. Miller __xfrm4_state_addr_check(const struct xfrm_state *x, 1319f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr) 13201da177e4SLinus Torvalds { 13211da177e4SLinus Torvalds if (daddr->a4 == x->id.daddr.a4 && 13221da177e4SLinus Torvalds (saddr->a4 == x->props.saddr.a4 || !saddr->a4 || !x->props.saddr.a4)) 13231da177e4SLinus Torvalds return 1; 13241da177e4SLinus Torvalds return 0; 13251da177e4SLinus Torvalds } 13261da177e4SLinus Torvalds 13271da177e4SLinus Torvalds static __inline__ int 1328f8848067SDavid S. Miller __xfrm6_state_addr_check(const struct xfrm_state *x, 1329f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr) 13301da177e4SLinus Torvalds { 1331ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 if (ipv6_addr_equal((struct in6_addr *)daddr, (struct in6_addr *)&x->id.daddr) && 1332ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 (ipv6_addr_equal((struct in6_addr *)saddr, (struct in6_addr *)&x->props.saddr) || 13331da177e4SLinus Torvalds ipv6_addr_any((struct in6_addr *)saddr) || 13341da177e4SLinus Torvalds ipv6_addr_any((struct in6_addr *)&x->props.saddr))) 13351da177e4SLinus Torvalds return 1; 13361da177e4SLinus Torvalds return 0; 13371da177e4SLinus Torvalds } 13381da177e4SLinus Torvalds 13391da177e4SLinus Torvalds static __inline__ int 1340f8848067SDavid S. Miller xfrm_state_addr_check(const struct xfrm_state *x, 1341f8848067SDavid S. Miller const xfrm_address_t *daddr, const xfrm_address_t *saddr, 13421da177e4SLinus Torvalds unsigned short family) 13431da177e4SLinus Torvalds { 13441da177e4SLinus Torvalds switch (family) { 13451da177e4SLinus Torvalds case AF_INET: 13461da177e4SLinus Torvalds return __xfrm4_state_addr_check(x, daddr, saddr); 13471da177e4SLinus Torvalds case AF_INET6: 13481da177e4SLinus Torvalds return __xfrm6_state_addr_check(x, daddr, saddr); 13491da177e4SLinus Torvalds } 13501da177e4SLinus Torvalds return 0; 13511da177e4SLinus Torvalds } 13521da177e4SLinus Torvalds 1353e53820deSMasahide NAKAMURA static __inline__ int 1354f8848067SDavid S. Miller xfrm_state_addr_flow_check(const struct xfrm_state *x, const struct flowi *fl, 1355e53820deSMasahide NAKAMURA unsigned short family) 1356e53820deSMasahide NAKAMURA { 1357e53820deSMasahide NAKAMURA switch (family) { 1358e53820deSMasahide NAKAMURA case AF_INET: 1359e53820deSMasahide NAKAMURA return __xfrm4_state_addr_check(x, 13607e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip4.daddr, 13617e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip4.saddr); 1362e53820deSMasahide NAKAMURA case AF_INET6: 1363e53820deSMasahide NAKAMURA return __xfrm6_state_addr_check(x, 13647e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip6.daddr, 13657e1dc7b6SDavid S. Miller (const xfrm_address_t *)&fl->u.ip6.saddr); 1366e53820deSMasahide NAKAMURA } 1367e53820deSMasahide NAKAMURA return 0; 1368e53820deSMasahide NAKAMURA } 1369e53820deSMasahide NAKAMURA 1370f8848067SDavid S. Miller static inline int xfrm_state_kern(const struct xfrm_state *x) 13711da177e4SLinus Torvalds { 13721da177e4SLinus Torvalds return atomic_read(&x->tunnel_users); 13731da177e4SLinus Torvalds } 13741da177e4SLinus Torvalds 1375dbb2483bSCong Wang static inline bool xfrm_id_proto_valid(u8 proto) 1376dbb2483bSCong Wang { 1377dbb2483bSCong Wang switch (proto) { 1378dbb2483bSCong Wang case IPPROTO_AH: 1379dbb2483bSCong Wang case IPPROTO_ESP: 1380dbb2483bSCong Wang case IPPROTO_COMP: 1381dbb2483bSCong Wang #if IS_ENABLED(CONFIG_IPV6) 1382dbb2483bSCong Wang case IPPROTO_ROUTING: 1383dbb2483bSCong Wang case IPPROTO_DSTOPTS: 1384dbb2483bSCong Wang #endif 1385dbb2483bSCong Wang return true; 1386dbb2483bSCong Wang default: 1387dbb2483bSCong Wang return false; 1388dbb2483bSCong Wang } 1389dbb2483bSCong Wang } 1390dbb2483bSCong Wang 1391dbb2483bSCong Wang /* IPSEC_PROTO_ANY only matches 3 IPsec protocols, 0 could match all. */ 13925794708fSMasahide NAKAMURA static inline int xfrm_id_proto_match(u8 proto, u8 userproto) 13935794708fSMasahide NAKAMURA { 1394dc00a525SMasahide NAKAMURA return (!userproto || proto == userproto || 1395dc00a525SMasahide NAKAMURA (userproto == IPSEC_PROTO_ANY && (proto == IPPROTO_AH || 1396dc00a525SMasahide NAKAMURA proto == IPPROTO_ESP || 1397dc00a525SMasahide NAKAMURA proto == IPPROTO_COMP))); 13985794708fSMasahide NAKAMURA } 13995794708fSMasahide NAKAMURA 14001da177e4SLinus Torvalds /* 14011da177e4SLinus Torvalds * xfrm algorithm information 14021da177e4SLinus Torvalds */ 14031a6509d9SHerbert Xu struct xfrm_algo_aead_info { 1404165ecc63SHerbert Xu char *geniv; 14051a6509d9SHerbert Xu u16 icv_truncbits; 14061a6509d9SHerbert Xu }; 14071a6509d9SHerbert Xu 14081da177e4SLinus Torvalds struct xfrm_algo_auth_info { 14091da177e4SLinus Torvalds u16 icv_truncbits; 14101da177e4SLinus Torvalds u16 icv_fullbits; 14111da177e4SLinus Torvalds }; 14121da177e4SLinus Torvalds 14131da177e4SLinus Torvalds struct xfrm_algo_encr_info { 1414165ecc63SHerbert Xu char *geniv; 14151da177e4SLinus Torvalds u16 blockbits; 14161da177e4SLinus Torvalds u16 defkeybits; 14171da177e4SLinus Torvalds }; 14181da177e4SLinus Torvalds 14191da177e4SLinus Torvalds struct xfrm_algo_comp_info { 14201da177e4SLinus Torvalds u16 threshold; 14211da177e4SLinus Torvalds }; 14221da177e4SLinus Torvalds 14231da177e4SLinus Torvalds struct xfrm_algo_desc { 14241da177e4SLinus Torvalds char *name; 142504ff1260SHerbert Xu char *compat; 14261da177e4SLinus Torvalds u8 available:1; 14277e50f84cSJussi Kivilinna u8 pfkey_supported:1; 14281da177e4SLinus Torvalds union { 14291a6509d9SHerbert Xu struct xfrm_algo_aead_info aead; 14301da177e4SLinus Torvalds struct xfrm_algo_auth_info auth; 14311da177e4SLinus Torvalds struct xfrm_algo_encr_info encr; 14321da177e4SLinus Torvalds struct xfrm_algo_comp_info comp; 14331da177e4SLinus Torvalds } uinfo; 14341da177e4SLinus Torvalds struct sadb_alg desc; 14351da177e4SLinus Torvalds }; 14361da177e4SLinus Torvalds 14373328715eSSteffen Klassert /* XFRM protocol handlers. */ 14383328715eSSteffen Klassert struct xfrm4_protocol { 14393328715eSSteffen Klassert int (*handler)(struct sk_buff *skb); 14403328715eSSteffen Klassert int (*input_handler)(struct sk_buff *skb, int nexthdr, __be32 spi, 14413328715eSSteffen Klassert int encap_type); 14423328715eSSteffen Klassert int (*cb_handler)(struct sk_buff *skb, int err); 14433328715eSSteffen Klassert int (*err_handler)(struct sk_buff *skb, u32 info); 14443328715eSSteffen Klassert 14453328715eSSteffen Klassert struct xfrm4_protocol __rcu *next; 14463328715eSSteffen Klassert int priority; 14473328715eSSteffen Klassert }; 14483328715eSSteffen Klassert 14497e14ea15SSteffen Klassert struct xfrm6_protocol { 14507e14ea15SSteffen Klassert int (*handler)(struct sk_buff *skb); 14510146dca7SSabrina Dubroca int (*input_handler)(struct sk_buff *skb, int nexthdr, __be32 spi, 14520146dca7SSabrina Dubroca int encap_type); 14537e14ea15SSteffen Klassert int (*cb_handler)(struct sk_buff *skb, int err); 14547e14ea15SSteffen Klassert int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, 14557e14ea15SSteffen Klassert u8 type, u8 code, int offset, __be32 info); 14567e14ea15SSteffen Klassert 14577e14ea15SSteffen Klassert struct xfrm6_protocol __rcu *next; 14587e14ea15SSteffen Klassert int priority; 14597e14ea15SSteffen Klassert }; 14607e14ea15SSteffen Klassert 14611da177e4SLinus Torvalds /* XFRM tunnel handlers. */ 14621da177e4SLinus Torvalds struct xfrm_tunnel { 14631da177e4SLinus Torvalds int (*handler)(struct sk_buff *skb); 14646df2db5dSXin Long int (*cb_handler)(struct sk_buff *skb, int err); 1465a6337463Sjamal int (*err_handler)(struct sk_buff *skb, u32 info); 1466d2acc347SHerbert Xu 1467b33eab08SEric Dumazet struct xfrm_tunnel __rcu *next; 1468d2acc347SHerbert Xu int priority; 14691da177e4SLinus Torvalds }; 14701da177e4SLinus Torvalds 14711da177e4SLinus Torvalds struct xfrm6_tunnel { 1472d2acc347SHerbert Xu int (*handler)(struct sk_buff *skb); 147386afc703SXin Long int (*cb_handler)(struct sk_buff *skb, int err); 1474d2acc347SHerbert Xu int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, 1475d5fdd6baSBrian Haley u8 type, u8 code, int offset, __be32 info); 14766f0bcf15SEric Dumazet struct xfrm6_tunnel __rcu *next; 1477d2acc347SHerbert Xu int priority; 14781da177e4SLinus Torvalds }; 14791da177e4SLinus Torvalds 1480d511337aSJoe Perches void xfrm_init(void); 1481d511337aSJoe Perches void xfrm4_init(void); 1482d511337aSJoe Perches int xfrm_state_init(struct net *net); 1483d511337aSJoe Perches void xfrm_state_fini(struct net *net); 1484d511337aSJoe Perches void xfrm4_state_init(void); 14852f32b51bSSteffen Klassert void xfrm4_protocol_init(void); 1486c35b7e72SDaniel Lezcano #ifdef CONFIG_XFRM 1487d511337aSJoe Perches int xfrm6_init(void); 1488d511337aSJoe Perches void xfrm6_fini(void); 1489d511337aSJoe Perches int xfrm6_state_init(void); 1490d511337aSJoe Perches void xfrm6_state_fini(void); 14917e14ea15SSteffen Klassert int xfrm6_protocol_init(void); 14927e14ea15SSteffen Klassert void xfrm6_protocol_fini(void); 1493c35b7e72SDaniel Lezcano #else 1494c35b7e72SDaniel Lezcano static inline int xfrm6_init(void) 1495c35b7e72SDaniel Lezcano { 1496c35b7e72SDaniel Lezcano return 0; 1497c35b7e72SDaniel Lezcano } 1498c35b7e72SDaniel Lezcano static inline void xfrm6_fini(void) 1499c35b7e72SDaniel Lezcano { 1500c35b7e72SDaniel Lezcano ; 1501c35b7e72SDaniel Lezcano } 1502c35b7e72SDaniel Lezcano #endif 15031da177e4SLinus Torvalds 1504558f82efSMasahide NAKAMURA #ifdef CONFIG_XFRM_STATISTICS 1505d511337aSJoe Perches int xfrm_proc_init(struct net *net); 1506d511337aSJoe Perches void xfrm_proc_fini(struct net *net); 1507558f82efSMasahide NAKAMURA #endif 1508558f82efSMasahide NAKAMURA 1509d511337aSJoe Perches int xfrm_sysctl_init(struct net *net); 1510b27aeadbSAlexey Dobriyan #ifdef CONFIG_SYSCTL 1511d511337aSJoe Perches void xfrm_sysctl_fini(struct net *net); 1512b27aeadbSAlexey Dobriyan #else 1513b27aeadbSAlexey Dobriyan static inline void xfrm_sysctl_fini(struct net *net) 1514b27aeadbSAlexey Dobriyan { 1515b27aeadbSAlexey Dobriyan } 1516b27aeadbSAlexey Dobriyan #endif 1517b27aeadbSAlexey Dobriyan 1518d3623099SNicolas Dichtel void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto, 1519870a2df4SNicolas Dichtel struct xfrm_address_filter *filter); 1520d511337aSJoe Perches int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk, 15214c563f76STimo Teras int (*func)(struct xfrm_state *, int, void*), void *); 1522283bc9f3SFan Du void xfrm_state_walk_done(struct xfrm_state_walk *walk, struct net *net); 1523d511337aSJoe Perches struct xfrm_state *xfrm_state_alloc(struct net *net); 15244a135e53SMathias Krause void xfrm_state_free(struct xfrm_state *x); 1525d511337aSJoe Perches struct xfrm_state *xfrm_state_find(const xfrm_address_t *daddr, 152633765d06SDavid S. Miller const xfrm_address_t *saddr, 1527b520e9f6SDavid S. Miller const struct flowi *fl, 1528b520e9f6SDavid S. Miller struct xfrm_tmpl *tmpl, 15291da177e4SLinus Torvalds struct xfrm_policy *pol, int *err, 1530bc56b334SBenedict Wong unsigned short family, u32 if_id); 15317e652640SSteffen Klassert struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark, u32 if_id, 15325447c5e4SAlexey Dobriyan xfrm_address_t *daddr, 1533628529b6SJamal Hadi Salim xfrm_address_t *saddr, 1534628529b6SJamal Hadi Salim unsigned short family, 1535628529b6SJamal Hadi Salim u8 mode, u8 proto, u32 reqid); 1536c454997eSFan Du struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi, 1537c454997eSFan Du unsigned short family); 1538d511337aSJoe Perches int xfrm_state_check_expire(struct xfrm_state *x); 1539d511337aSJoe Perches void xfrm_state_insert(struct xfrm_state *x); 1540d511337aSJoe Perches int xfrm_state_add(struct xfrm_state *x); 1541d511337aSJoe Perches int xfrm_state_update(struct xfrm_state *x); 1542d511337aSJoe Perches struct xfrm_state *xfrm_state_lookup(struct net *net, u32 mark, 1543a70486f0SDavid S. Miller const xfrm_address_t *daddr, __be32 spi, 1544bd55775cSJamal Hadi Salim u8 proto, unsigned short family); 1545d511337aSJoe Perches struct xfrm_state *xfrm_state_lookup_byaddr(struct net *net, u32 mark, 1546a70486f0SDavid S. Miller const xfrm_address_t *daddr, 1547a70486f0SDavid S. Miller const xfrm_address_t *saddr, 1548bd55775cSJamal Hadi Salim u8 proto, 1549bd55775cSJamal Hadi Salim unsigned short family); 155041a49cc3SMasahide NAKAMURA #ifdef CONFIG_XFRM_SUB_POLICY 15513aaf3915SFlorian Westphal void xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n, 15523aaf3915SFlorian Westphal unsigned short family); 15533aaf3915SFlorian Westphal void xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n, 1554d511337aSJoe Perches unsigned short family); 155541a49cc3SMasahide NAKAMURA #else 15563aaf3915SFlorian Westphal static inline void xfrm_tmpl_sort(struct xfrm_tmpl **d, struct xfrm_tmpl **s, 155741a49cc3SMasahide NAKAMURA int n, unsigned short family) 155841a49cc3SMasahide NAKAMURA { 15593aaf3915SFlorian Westphal } 15603aaf3915SFlorian Westphal 15613aaf3915SFlorian Westphal static inline void xfrm_state_sort(struct xfrm_state **d, struct xfrm_state **s, 15623aaf3915SFlorian Westphal int n, unsigned short family) 15633aaf3915SFlorian Westphal { 156441a49cc3SMasahide NAKAMURA } 156541a49cc3SMasahide NAKAMURA #endif 1566af11e316SJamal Hadi Salim 1567af11e316SJamal Hadi Salim struct xfrmk_sadinfo { 1568af11e316SJamal Hadi Salim u32 sadhcnt; /* current hash bkts */ 1569af11e316SJamal Hadi Salim u32 sadhmcnt; /* max allowed hash bkts */ 1570af11e316SJamal Hadi Salim u32 sadcnt; /* current running count */ 1571af11e316SJamal Hadi Salim }; 1572af11e316SJamal Hadi Salim 15735a6d3416SJamal Hadi Salim struct xfrmk_spdinfo { 15745a6d3416SJamal Hadi Salim u32 incnt; 15755a6d3416SJamal Hadi Salim u32 outcnt; 15765a6d3416SJamal Hadi Salim u32 fwdcnt; 15775a6d3416SJamal Hadi Salim u32 inscnt; 15785a6d3416SJamal Hadi Salim u32 outscnt; 15795a6d3416SJamal Hadi Salim u32 fwdscnt; 15805a6d3416SJamal Hadi Salim u32 spdhcnt; 15815a6d3416SJamal Hadi Salim u32 spdhmcnt; 15825a6d3416SJamal Hadi Salim }; 15835a6d3416SJamal Hadi Salim 1584d511337aSJoe Perches struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq); 1585d511337aSJoe Perches int xfrm_state_delete(struct xfrm_state *x); 1586f75a2804SCong Wang int xfrm_state_flush(struct net *net, u8 proto, bool task_valid, bool sync); 1587d77e38e6SSteffen Klassert int xfrm_dev_state_flush(struct net *net, struct net_device *dev, bool task_valid); 1588d511337aSJoe Perches void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si); 1589d511337aSJoe Perches void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si); 1590d511337aSJoe Perches u32 xfrm_replay_seqhi(struct xfrm_state *x, __be32 net_seq); 15911cf9a3aeSSabrina Dubroca int xfrm_init_replay(struct xfrm_state *x, struct netlink_ext_ack *extack); 1592c7b37c76SFlorian Westphal u32 xfrm_state_mtu(struct xfrm_state *x, int mtu); 1593741f9a10SSabrina Dubroca int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload, 1594741f9a10SSabrina Dubroca struct netlink_ext_ack *extack); 1595d511337aSJoe Perches int xfrm_init_state(struct xfrm_state *x); 1596d511337aSJoe Perches int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type); 1597d511337aSJoe Perches int xfrm_input_resume(struct sk_buff *skb, int nexthdr); 15987b380192SSabrina Dubroca int xfrm_trans_queue_net(struct net *net, struct sk_buff *skb, 15997b380192SSabrina Dubroca int (*finish)(struct net *, struct sock *, 16007b380192SSabrina Dubroca struct sk_buff *)); 1601acf568eeSHerbert Xu int xfrm_trans_queue(struct sk_buff *skb, 1602acf568eeSHerbert Xu int (*finish)(struct net *, struct sock *, 1603acf568eeSHerbert Xu struct sk_buff *)); 16049ab1265dSEvan Nimmo int xfrm_output_resume(struct sock *sk, struct sk_buff *skb, int err); 16057026b1ddSDavid Miller int xfrm_output(struct sock *sk, struct sk_buff *skb); 16060c620e97SFlorian Westphal 16070c620e97SFlorian Westphal #if IS_ENABLED(CONFIG_NET_PKTGEN) 16080c620e97SFlorian Westphal int pktgen_xfrm_outer_mode_output(struct xfrm_state *x, struct sk_buff *skb); 16090c620e97SFlorian Westphal #endif 16100c620e97SFlorian Westphal 1611d511337aSJoe Perches void xfrm_local_error(struct sk_buff *skb, int mtu); 1612d511337aSJoe Perches int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb); 1613d511337aSJoe Perches int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi, 1614716062fdSHerbert Xu int encap_type); 1615d511337aSJoe Perches int xfrm4_transport_finish(struct sk_buff *skb, int async); 1616d511337aSJoe Perches int xfrm4_rcv(struct sk_buff *skb); 1617c4541b41SHerbert Xu 1618c4541b41SHerbert Xu static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi) 1619c4541b41SHerbert Xu { 162070be6c91SSteffen Klassert XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4 = NULL; 16213328715eSSteffen Klassert XFRM_SPI_SKB_CB(skb)->family = AF_INET; 16223328715eSSteffen Klassert XFRM_SPI_SKB_CB(skb)->daddroff = offsetof(struct iphdr, daddr); 16233328715eSSteffen Klassert return xfrm_input(skb, nexthdr, spi, 0); 1624c4541b41SHerbert Xu } 1625c4541b41SHerbert Xu 1626ede2059dSEric W. Biederman int xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb); 16273328715eSSteffen Klassert int xfrm4_protocol_register(struct xfrm4_protocol *handler, unsigned char protocol); 16283328715eSSteffen Klassert int xfrm4_protocol_deregister(struct xfrm4_protocol *handler, unsigned char protocol); 1629d511337aSJoe Perches int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family); 1630d511337aSJoe Perches int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family); 1631d511337aSJoe Perches void xfrm4_local_error(struct sk_buff *skb, u32 mtu); 1632d511337aSJoe Perches int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb); 163363c43787SNicolas Dichtel int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi, 163463c43787SNicolas Dichtel struct ip6_tnl *t); 16350146dca7SSabrina Dubroca int xfrm6_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi, 16360146dca7SSabrina Dubroca int encap_type); 1637d511337aSJoe Perches int xfrm6_transport_finish(struct sk_buff *skb, int async); 163863c43787SNicolas Dichtel int xfrm6_rcv_tnl(struct sk_buff *skb, struct ip6_tnl *t); 1639d511337aSJoe Perches int xfrm6_rcv(struct sk_buff *skb); 1640d511337aSJoe Perches int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr, 1641fbd9a5b4SMasahide NAKAMURA xfrm_address_t *saddr, u8 proto); 16427b77d161SDavid S. Miller void xfrm6_local_error(struct sk_buff *skb, u32 mtu); 16437e14ea15SSteffen Klassert int xfrm6_protocol_register(struct xfrm6_protocol *handler, unsigned char protocol); 16447e14ea15SSteffen Klassert int xfrm6_protocol_deregister(struct xfrm6_protocol *handler, unsigned char protocol); 1645d511337aSJoe Perches int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family); 16467b77d161SDavid S. Miller int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family); 1647d511337aSJoe Perches __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr); 1648d511337aSJoe Perches __be32 xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr); 1649ede2059dSEric W. Biederman int xfrm6_output(struct net *net, struct sock *sk, struct sk_buff *skb); 16501da177e4SLinus Torvalds 16511da177e4SLinus Torvalds #ifdef CONFIG_XFRM 16523e50ddd8SFlorian Westphal void xfrm6_local_rxpmtu(struct sk_buff *skb, u32 mtu); 1653d511337aSJoe Perches int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb); 16540146dca7SSabrina Dubroca int xfrm6_udp_encap_rcv(struct sock *sk, struct sk_buff *skb); 1655c6d1b26aSChristoph Hellwig int xfrm_user_policy(struct sock *sk, int optname, sockptr_t optval, 1656c6d1b26aSChristoph Hellwig int optlen); 16571da177e4SLinus Torvalds #else 1658c6d1b26aSChristoph Hellwig static inline int xfrm_user_policy(struct sock *sk, int optname, 1659c6d1b26aSChristoph Hellwig sockptr_t optval, int optlen) 16601da177e4SLinus Torvalds { 16611da177e4SLinus Torvalds return -ENOPROTOOPT; 16621da177e4SLinus Torvalds } 16631da177e4SLinus Torvalds #endif 16641da177e4SLinus Torvalds 1665d77e38e6SSteffen Klassert struct dst_entry *__xfrm_dst_lookup(struct net *net, int tos, int oif, 1666d77e38e6SSteffen Klassert const xfrm_address_t *saddr, 1667d77e38e6SSteffen Klassert const xfrm_address_t *daddr, 1668077fbac4SLorenzo Colitti int family, u32 mark); 1669d77e38e6SSteffen Klassert 16700331b1f3SAlexey Dobriyan struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp); 16714c563f76STimo Teras 1672d511337aSJoe Perches void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type); 1673d511337aSJoe Perches int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk, 1674d511337aSJoe Perches int (*func)(struct xfrm_policy *, int, int, void*), 1675d511337aSJoe Perches void *); 1676283bc9f3SFan Du void xfrm_policy_walk_done(struct xfrm_policy_walk *walk, struct net *net); 16771da177e4SLinus Torvalds int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl); 16784f47e8abSXin Long struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, 16794f47e8abSXin Long const struct xfrm_mark *mark, 16804f47e8abSXin Long u32 if_id, u8 type, int dir, 16814e81bb83SMasahide NAKAMURA struct xfrm_selector *sel, 1682ef41aaa0SEric Paris struct xfrm_sec_ctx *ctx, int delete, 1683ef41aaa0SEric Paris int *err); 16844f47e8abSXin Long struct xfrm_policy *xfrm_policy_byid(struct net *net, 16854f47e8abSXin Long const struct xfrm_mark *mark, u32 if_id, 16864f47e8abSXin Long u8 type, int dir, u32 id, int delete, 16874f47e8abSXin Long int *err); 16882e71029eSTetsuo Handa int xfrm_policy_flush(struct net *net, u8 type, bool task_valid); 1689880a6fabSChristophe Gouault void xfrm_policy_hash_rebuild(struct net *net); 16901da177e4SLinus Torvalds u32 xfrm_get_acqseq(void); 1691c2dad11eSSabrina Dubroca int verify_spi_info(u8 proto, u32 min, u32 max, struct netlink_ext_ack *extack); 1692c2dad11eSSabrina Dubroca int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi, 1693c2dad11eSSabrina Dubroca struct netlink_ext_ack *extack); 1694e473fcb4SMathias Krause struct xfrm_state *xfrm_find_acq(struct net *net, const struct xfrm_mark *mark, 16957e652640SSteffen Klassert u8 mode, u32 reqid, u32 if_id, u8 proto, 1696a70486f0SDavid S. Miller const xfrm_address_t *daddr, 1697a70486f0SDavid S. Miller const xfrm_address_t *saddr, int create, 1698bd55775cSJamal Hadi Salim unsigned short family); 1699d511337aSJoe Perches int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol); 17001da177e4SLinus Torvalds 170180c9abaaSShinta Sugimoto #ifdef CONFIG_XFRM_MIGRATE 1702d511337aSJoe Perches int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, 1703183cad12SDavid S. Miller const struct xfrm_migrate *m, int num_bundles, 17048bafd730SAntony Antony const struct xfrm_kmaddress *k, 17058bafd730SAntony Antony const struct xfrm_encap_tmpl *encap); 1706c1aca308SYan Yan struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net, 1707c1aca308SYan Yan u32 if_id); 1708d511337aSJoe Perches struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, 17094ab47d47SAntony Antony struct xfrm_migrate *m, 17104ab47d47SAntony Antony struct xfrm_encap_tmpl *encap); 1711d511337aSJoe Perches int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, 171213c1d189SArnaud Ebalard struct xfrm_migrate *m, int num_bundles, 17134ab47d47SAntony Antony struct xfrm_kmaddress *k, struct net *net, 1714bd122403SSabrina Dubroca struct xfrm_encap_tmpl *encap, u32 if_id, 1715bd122403SSabrina Dubroca struct netlink_ext_ack *extack); 171680c9abaaSShinta Sugimoto #endif 171780c9abaaSShinta Sugimoto 1718d511337aSJoe Perches int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport); 1719d511337aSJoe Perches void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 portid); 1720d511337aSJoe Perches int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, 1721d511337aSJoe Perches xfrm_address_t *addr); 17221da177e4SLinus Torvalds 1723d511337aSJoe Perches void xfrm_input_init(void); 1724d511337aSJoe Perches int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq); 17251da177e4SLinus Torvalds 1726d511337aSJoe Perches void xfrm_probe_algs(void); 1727d511337aSJoe Perches int xfrm_count_pfkey_auth_supported(void); 1728d511337aSJoe Perches int xfrm_count_pfkey_enc_supported(void); 1729d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx); 1730d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx); 1731d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id); 1732d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id); 1733d511337aSJoe Perches struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id); 1734d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aalg_get_byname(const char *name, int probe); 1735d511337aSJoe Perches struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe); 1736d511337aSJoe Perches struct xfrm_algo_desc *xfrm_calg_get_byname(const char *name, int probe); 1737d511337aSJoe Perches struct xfrm_algo_desc *xfrm_aead_get_byname(const char *name, int icv_len, 17381a6509d9SHerbert Xu int probe); 17391da177e4SLinus Torvalds 1740ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 static inline bool xfrm6_addr_equal(const xfrm_address_t *a, 1741ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 const xfrm_address_t *b) 1742ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 { 1743ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 return ipv6_addr_equal((const struct in6_addr *)a, 1744ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 (const struct in6_addr *)b); 1745ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 } 1746ff88b30cSYOSHIFUJI Hideaki / 吉藤英明 174770e94e66SYOSHIFUJI Hideaki / 吉藤英明 static inline bool xfrm_addr_equal(const xfrm_address_t *a, 174870e94e66SYOSHIFUJI Hideaki / 吉藤英明 const xfrm_address_t *b, 174970e94e66SYOSHIFUJI Hideaki / 吉藤英明 sa_family_t family) 175070e94e66SYOSHIFUJI Hideaki / 吉藤英明 { 175170e94e66SYOSHIFUJI Hideaki / 吉藤英明 switch (family) { 175270e94e66SYOSHIFUJI Hideaki / 吉藤英明 default: 175370e94e66SYOSHIFUJI Hideaki / 吉藤英明 case AF_INET: 175470e94e66SYOSHIFUJI Hideaki / 吉藤英明 return ((__force u32)a->a4 ^ (__force u32)b->a4) == 0; 175570e94e66SYOSHIFUJI Hideaki / 吉藤英明 case AF_INET6: 175670e94e66SYOSHIFUJI Hideaki / 吉藤英明 return xfrm6_addr_equal(a, b); 175770e94e66SYOSHIFUJI Hideaki / 吉藤英明 } 175870e94e66SYOSHIFUJI Hideaki / 吉藤英明 } 175970e94e66SYOSHIFUJI Hideaki / 吉藤英明 176077d8d7a6SHerbert Xu static inline int xfrm_policy_id2dir(u32 index) 176177d8d7a6SHerbert Xu { 176277d8d7a6SHerbert Xu return index & 7; 176377d8d7a6SHerbert Xu } 176477d8d7a6SHerbert Xu 1765a6483b79SAlexey Dobriyan #ifdef CONFIG_XFRM 1766c7f87783SFlorian Westphal void xfrm_replay_advance(struct xfrm_state *x, __be32 net_seq); 1767adfc2fdbSFlorian Westphal int xfrm_replay_check(struct xfrm_state *x, struct sk_buff *skb, __be32 net_seq); 1768cfc61c59SFlorian Westphal void xfrm_replay_notify(struct xfrm_state *x, int event); 1769b5a1d1feSFlorian Westphal int xfrm_replay_overflow(struct xfrm_state *x, struct sk_buff *skb); 177025cfb8bcSFlorian Westphal int xfrm_replay_recheck(struct xfrm_state *x, struct sk_buff *skb, __be32 net_seq); 1771cfc61c59SFlorian Westphal 1772a6483b79SAlexey Dobriyan static inline int xfrm_aevent_is_on(struct net *net) 1773f8cd5488SJamal Hadi Salim { 1774be33690dSPatrick McHardy struct sock *nlsk; 1775be33690dSPatrick McHardy int ret = 0; 1776be33690dSPatrick McHardy 1777be33690dSPatrick McHardy rcu_read_lock(); 1778a6483b79SAlexey Dobriyan nlsk = rcu_dereference(net->xfrm.nlsk); 1779be33690dSPatrick McHardy if (nlsk) 1780be33690dSPatrick McHardy ret = netlink_has_listeners(nlsk, XFRMNLGRP_AEVENTS); 1781be33690dSPatrick McHardy rcu_read_unlock(); 1782be33690dSPatrick McHardy return ret; 1783f8cd5488SJamal Hadi Salim } 17840f24558eSHoria Geanta 17850f24558eSHoria Geanta static inline int xfrm_acquire_is_on(struct net *net) 17860f24558eSHoria Geanta { 17870f24558eSHoria Geanta struct sock *nlsk; 17880f24558eSHoria Geanta int ret = 0; 17890f24558eSHoria Geanta 17900f24558eSHoria Geanta rcu_read_lock(); 17910f24558eSHoria Geanta nlsk = rcu_dereference(net->xfrm.nlsk); 17920f24558eSHoria Geanta if (nlsk) 17930f24558eSHoria Geanta ret = netlink_has_listeners(nlsk, XFRMNLGRP_ACQUIRE); 17940f24558eSHoria Geanta rcu_read_unlock(); 17950f24558eSHoria Geanta 17960f24558eSHoria Geanta return ret; 17970f24558eSHoria Geanta } 1798a6483b79SAlexey Dobriyan #endif 1799f8cd5488SJamal Hadi Salim 1800373b8eebSAlexey Dobriyan static inline unsigned int aead_len(struct xfrm_algo_aead *alg) 1801ee5c2317SSteffen Klassert { 1802ee5c2317SSteffen Klassert return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 1803ee5c2317SSteffen Klassert } 1804ee5c2317SSteffen Klassert 180506cd22f8SAlexey Dobriyan static inline unsigned int xfrm_alg_len(const struct xfrm_algo *alg) 18060f99be0dSEric Dumazet { 18070f99be0dSEric Dumazet return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 18080f99be0dSEric Dumazet } 18090f99be0dSEric Dumazet 18101bd963a7SAlexey Dobriyan static inline unsigned int xfrm_alg_auth_len(const struct xfrm_algo_auth *alg) 18114447bb33SMartin Willi { 18124447bb33SMartin Willi return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); 18134447bb33SMartin Willi } 18144447bb33SMartin Willi 18155e708e47SAlexey Dobriyan static inline unsigned int xfrm_replay_state_esn_len(struct xfrm_replay_state_esn *replay_esn) 18169736acf3SSteffen Klassert { 18179736acf3SSteffen Klassert return sizeof(*replay_esn) + replay_esn->bmp_len * sizeof(__u32); 18189736acf3SSteffen Klassert } 18199736acf3SSteffen Klassert 182080c9abaaSShinta Sugimoto #ifdef CONFIG_XFRM_MIGRATE 1821af2f464eSSteffen Klassert static inline int xfrm_replay_clone(struct xfrm_state *x, 1822af2f464eSSteffen Klassert struct xfrm_state *orig) 1823af2f464eSSteffen Klassert { 182491a46c6dSAntony Antony 182591a46c6dSAntony Antony x->replay_esn = kmemdup(orig->replay_esn, 182691a46c6dSAntony Antony xfrm_replay_state_esn_len(orig->replay_esn), 1827af2f464eSSteffen Klassert GFP_KERNEL); 1828af2f464eSSteffen Klassert if (!x->replay_esn) 1829af2f464eSSteffen Klassert return -ENOMEM; 183091a46c6dSAntony Antony x->preplay_esn = kmemdup(orig->preplay_esn, 183191a46c6dSAntony Antony xfrm_replay_state_esn_len(orig->preplay_esn), 1832af2f464eSSteffen Klassert GFP_KERNEL); 183391a46c6dSAntony Antony if (!x->preplay_esn) 1834af2f464eSSteffen Klassert return -ENOMEM; 1835af2f464eSSteffen Klassert 1836af2f464eSSteffen Klassert return 0; 1837af2f464eSSteffen Klassert } 1838af2f464eSSteffen Klassert 1839ee5c2317SSteffen Klassert static inline struct xfrm_algo_aead *xfrm_algo_aead_clone(struct xfrm_algo_aead *orig) 1840ee5c2317SSteffen Klassert { 1841ee5c2317SSteffen Klassert return kmemdup(orig, aead_len(orig), GFP_KERNEL); 1842ee5c2317SSteffen Klassert } 1843ee5c2317SSteffen Klassert 1844ee5c2317SSteffen Klassert 184580c9abaaSShinta Sugimoto static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig) 184680c9abaaSShinta Sugimoto { 18470f99be0dSEric Dumazet return kmemdup(orig, xfrm_alg_len(orig), GFP_KERNEL); 184880c9abaaSShinta Sugimoto } 184980c9abaaSShinta Sugimoto 18504447bb33SMartin Willi static inline struct xfrm_algo_auth *xfrm_algo_auth_clone(struct xfrm_algo_auth *orig) 18514447bb33SMartin Willi { 18524447bb33SMartin Willi return kmemdup(orig, xfrm_alg_auth_len(orig), GFP_KERNEL); 18534447bb33SMartin Willi } 18544447bb33SMartin Willi 185580c9abaaSShinta Sugimoto static inline void xfrm_states_put(struct xfrm_state **states, int n) 185680c9abaaSShinta Sugimoto { 185780c9abaaSShinta Sugimoto int i; 185880c9abaaSShinta Sugimoto for (i = 0; i < n; i++) 185980c9abaaSShinta Sugimoto xfrm_state_put(*(states + i)); 186080c9abaaSShinta Sugimoto } 186180c9abaaSShinta Sugimoto 186280c9abaaSShinta Sugimoto static inline void xfrm_states_delete(struct xfrm_state **states, int n) 186380c9abaaSShinta Sugimoto { 186480c9abaaSShinta Sugimoto int i; 186580c9abaaSShinta Sugimoto for (i = 0; i < n; i++) 186680c9abaaSShinta Sugimoto xfrm_state_delete(*(states + i)); 186780c9abaaSShinta Sugimoto } 186880c9abaaSShinta Sugimoto #endif 1869f8cd5488SJamal Hadi Salim 1870def8b4faSAlexey Dobriyan #ifdef CONFIG_XFRM 187100501121SHerbert Xu static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb) 187200501121SHerbert Xu { 18732294be0fSFlorian Westphal struct sec_path *sp = skb_sec_path(skb); 18742294be0fSFlorian Westphal 18752294be0fSFlorian Westphal return sp->xvec[sp->len - 1]; 187600501121SHerbert Xu } 1877f53c7239SSteffen Klassert #endif 1878f53c7239SSteffen Klassert 187954ef207aSSteffen Klassert static inline struct xfrm_offload *xfrm_offload(struct sk_buff *skb) 188054ef207aSSteffen Klassert { 1881f53c7239SSteffen Klassert #ifdef CONFIG_XFRM 18822294be0fSFlorian Westphal struct sec_path *sp = skb_sec_path(skb); 188354ef207aSSteffen Klassert 188454ef207aSSteffen Klassert if (!sp || !sp->olen || sp->len != sp->olen) 188554ef207aSSteffen Klassert return NULL; 188654ef207aSSteffen Klassert 188754ef207aSSteffen Klassert return &sp->ovec[sp->olen - 1]; 1888f53c7239SSteffen Klassert #else 1889f53c7239SSteffen Klassert return NULL; 1890def8b4faSAlexey Dobriyan #endif 1891f53c7239SSteffen Klassert } 189200501121SHerbert Xu 1893e9a441b6SKirill Tkhai void __init xfrm_dev_init(void); 1894b81f884aSHangbin Liu 1895b81f884aSHangbin Liu #ifdef CONFIG_XFRM_OFFLOAD 1896f53c7239SSteffen Klassert void xfrm_dev_resume(struct sk_buff *skb); 1897f53c7239SSteffen Klassert void xfrm_dev_backlog(struct softnet_data *sd); 1898f53c7239SSteffen Klassert struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features, bool *again); 1899d77e38e6SSteffen Klassert int xfrm_dev_state_add(struct net *net, struct xfrm_state *x, 1900adb5c33eSSabrina Dubroca struct xfrm_user_offload *xuo, 1901adb5c33eSSabrina Dubroca struct netlink_ext_ack *extack); 1902d77e38e6SSteffen Klassert bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x); 1903d77e38e6SSteffen Klassert 190450bd870aSYossef Efraim static inline void xfrm_dev_state_advance_esn(struct xfrm_state *x) 190550bd870aSYossef Efraim { 190687e0a94eSLeon Romanovsky struct xfrm_dev_offload *xso = &x->xso; 190750bd870aSYossef Efraim 190850bd870aSYossef Efraim if (xso->dev && xso->dev->xfrmdev_ops->xdo_dev_state_advance_esn) 190950bd870aSYossef Efraim xso->dev->xfrmdev_ops->xdo_dev_state_advance_esn(x); 191050bd870aSYossef Efraim } 191150bd870aSYossef Efraim 1912f70f250aSSteffen Klassert static inline bool xfrm_dst_offload_ok(struct dst_entry *dst) 1913f70f250aSSteffen Klassert { 1914f70f250aSSteffen Klassert struct xfrm_state *x = dst->xfrm; 1915b6ca8bd5SDavid Miller struct xfrm_dst *xdst; 1916f70f250aSSteffen Klassert 1917f70f250aSSteffen Klassert if (!x || !x->type_offload) 1918f70f250aSSteffen Klassert return false; 1919f70f250aSSteffen Klassert 1920b6ca8bd5SDavid Miller xdst = (struct xfrm_dst *) dst; 19212271d519SSteffen Klassert if (!x->xso.offload_handle && !xdst->child->xfrm) 19222271d519SSteffen Klassert return true; 19230f6c480fSDavid Miller if (x->xso.offload_handle && (x->xso.dev == xfrm_dst_path(dst)->dev) && 1924b6ca8bd5SDavid Miller !xdst->child->xfrm) 1925f70f250aSSteffen Klassert return true; 1926f70f250aSSteffen Klassert 1927f70f250aSSteffen Klassert return false; 1928f70f250aSSteffen Klassert } 1929f70f250aSSteffen Klassert 1930d77e38e6SSteffen Klassert static inline void xfrm_dev_state_delete(struct xfrm_state *x) 1931d77e38e6SSteffen Klassert { 193287e0a94eSLeon Romanovsky struct xfrm_dev_offload *xso = &x->xso; 1933d77e38e6SSteffen Klassert 1934d77e38e6SSteffen Klassert if (xso->dev) 1935d77e38e6SSteffen Klassert xso->dev->xfrmdev_ops->xdo_dev_state_delete(x); 1936d77e38e6SSteffen Klassert } 1937d77e38e6SSteffen Klassert 1938d77e38e6SSteffen Klassert static inline void xfrm_dev_state_free(struct xfrm_state *x) 1939d77e38e6SSteffen Klassert { 194087e0a94eSLeon Romanovsky struct xfrm_dev_offload *xso = &x->xso; 1941d77e38e6SSteffen Klassert struct net_device *dev = xso->dev; 1942d77e38e6SSteffen Klassert 1943d77e38e6SSteffen Klassert if (dev && dev->xfrmdev_ops) { 19447f05b467SShannon Nelson if (dev->xfrmdev_ops->xdo_dev_state_free) 1945d77e38e6SSteffen Klassert dev->xfrmdev_ops->xdo_dev_state_free(x); 1946d77e38e6SSteffen Klassert xso->dev = NULL; 1947d62607c3SJakub Kicinski netdev_put(dev, &xso->dev_tracker); 1948d77e38e6SSteffen Klassert } 1949d77e38e6SSteffen Klassert } 1950d77e38e6SSteffen Klassert #else 1951f53c7239SSteffen Klassert static inline void xfrm_dev_resume(struct sk_buff *skb) 1952f53c7239SSteffen Klassert { 1953f53c7239SSteffen Klassert } 1954f53c7239SSteffen Klassert 1955f53c7239SSteffen Klassert static inline void xfrm_dev_backlog(struct softnet_data *sd) 1956f53c7239SSteffen Klassert { 1957f53c7239SSteffen Klassert } 1958f53c7239SSteffen Klassert 1959f53c7239SSteffen Klassert static inline struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features, bool *again) 1960f6e27114SSteffen Klassert { 19613dca3f38SSteffen Klassert return skb; 1962f6e27114SSteffen Klassert } 1963f6e27114SSteffen Klassert 1964adb5c33eSSabrina Dubroca static inline int xfrm_dev_state_add(struct net *net, struct xfrm_state *x, struct xfrm_user_offload *xuo, struct netlink_ext_ack *extack) 1965d77e38e6SSteffen Klassert { 1966d77e38e6SSteffen Klassert return 0; 1967d77e38e6SSteffen Klassert } 1968d77e38e6SSteffen Klassert 1969d77e38e6SSteffen Klassert static inline void xfrm_dev_state_delete(struct xfrm_state *x) 1970d77e38e6SSteffen Klassert { 1971d77e38e6SSteffen Klassert } 1972d77e38e6SSteffen Klassert 1973d77e38e6SSteffen Klassert static inline void xfrm_dev_state_free(struct xfrm_state *x) 1974d77e38e6SSteffen Klassert { 1975d77e38e6SSteffen Klassert } 1976d77e38e6SSteffen Klassert 1977d77e38e6SSteffen Klassert static inline bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x) 1978d77e38e6SSteffen Klassert { 1979d77e38e6SSteffen Klassert return false; 1980d77e38e6SSteffen Klassert } 1981f70f250aSSteffen Klassert 198250bd870aSYossef Efraim static inline void xfrm_dev_state_advance_esn(struct xfrm_state *x) 198350bd870aSYossef Efraim { 198450bd870aSYossef Efraim } 198550bd870aSYossef Efraim 1986f70f250aSSteffen Klassert static inline bool xfrm_dst_offload_ok(struct dst_entry *dst) 1987f70f250aSSteffen Klassert { 1988f70f250aSSteffen Klassert return false; 1989f70f250aSSteffen Klassert } 1990d77e38e6SSteffen Klassert #endif 1991d77e38e6SSteffen Klassert 1992bf825f81SJamal Hadi Salim static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m) 1993bf825f81SJamal Hadi Salim { 1994bf825f81SJamal Hadi Salim if (attrs[XFRMA_MARK]) 19954efd7e83SAndreas Steffen memcpy(m, nla_data(attrs[XFRMA_MARK]), sizeof(struct xfrm_mark)); 1996bf825f81SJamal Hadi Salim else 1997bf825f81SJamal Hadi Salim m->v = m->m = 0; 1998bf825f81SJamal Hadi Salim 1999bf825f81SJamal Hadi Salim return m->v & m->m; 2000bf825f81SJamal Hadi Salim } 2001bf825f81SJamal Hadi Salim 2002e3dfa389SDavid S. Miller static inline int xfrm_mark_put(struct sk_buff *skb, const struct xfrm_mark *m) 2003bf825f81SJamal Hadi Salim { 20041d1e34ddSDavid S. Miller int ret = 0; 2005bf825f81SJamal Hadi Salim 20061d1e34ddSDavid S. Miller if (m->m | m->v) 20071d1e34ddSDavid S. Miller ret = nla_put(skb, XFRMA_MARK, sizeof(struct xfrm_mark), m); 20081d1e34ddSDavid S. Miller return ret; 2009bf825f81SJamal Hadi Salim } 2010bf825f81SJamal Hadi Salim 20119b42c1f1SSteffen Klassert static inline __u32 xfrm_smark_get(__u32 mark, struct xfrm_state *x) 20129b42c1f1SSteffen Klassert { 20139b42c1f1SSteffen Klassert struct xfrm_mark *m = &x->props.smark; 20149b42c1f1SSteffen Klassert 20159b42c1f1SSteffen Klassert return (m->v & m->m) | (mark & ~m->m); 20169b42c1f1SSteffen Klassert } 20179b42c1f1SSteffen Klassert 20187e652640SSteffen Klassert static inline int xfrm_if_id_put(struct sk_buff *skb, __u32 if_id) 20197e652640SSteffen Klassert { 20207e652640SSteffen Klassert int ret = 0; 20217e652640SSteffen Klassert 20227e652640SSteffen Klassert if (if_id) 20237e652640SSteffen Klassert ret = nla_put_u32(skb, XFRMA_IF_ID, if_id); 20247e652640SSteffen Klassert return ret; 20257e652640SSteffen Klassert } 20267e652640SSteffen Klassert 202770be6c91SSteffen Klassert static inline int xfrm_tunnel_check(struct sk_buff *skb, struct xfrm_state *x, 202870be6c91SSteffen Klassert unsigned int family) 202970be6c91SSteffen Klassert { 203070be6c91SSteffen Klassert bool tunnel = false; 203170be6c91SSteffen Klassert 203270be6c91SSteffen Klassert switch(family) { 203370be6c91SSteffen Klassert case AF_INET: 203470be6c91SSteffen Klassert if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4) 203570be6c91SSteffen Klassert tunnel = true; 203670be6c91SSteffen Klassert break; 203770be6c91SSteffen Klassert case AF_INET6: 203870be6c91SSteffen Klassert if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6) 203970be6c91SSteffen Klassert tunnel = true; 204070be6c91SSteffen Klassert break; 204170be6c91SSteffen Klassert } 2042c9500d7bSFlorian Westphal if (tunnel && !(x->outer_mode.flags & XFRM_MODE_FLAG_TUNNEL)) 204370be6c91SSteffen Klassert return -EINVAL; 204470be6c91SSteffen Klassert 204570be6c91SSteffen Klassert return 0; 204670be6c91SSteffen Klassert } 2047ede64dd2SFlorian Westphal 20485461fc0cSDmitry Safonov extern const int xfrm_msg_min[XFRM_NR_MSGTYPES]; 20495106f4a8SDmitry Safonov extern const struct nla_policy xfrma_policy[XFRMA_MAX+1]; 20505461fc0cSDmitry Safonov 2051c9e7c76dSDmitry Safonov struct xfrm_translator { 20525461fc0cSDmitry Safonov /* Allocate frag_list and put compat translation there */ 20535461fc0cSDmitry Safonov int (*alloc_compat)(struct sk_buff *skb, const struct nlmsghdr *src); 20545461fc0cSDmitry Safonov 20555106f4a8SDmitry Safonov /* Allocate nlmsg with 64-bit translaton of received 32-bit message */ 20565106f4a8SDmitry Safonov struct nlmsghdr *(*rcv_msg_compat)(const struct nlmsghdr *nlh, 20575106f4a8SDmitry Safonov int maxtype, const struct nla_policy *policy, 20585106f4a8SDmitry Safonov struct netlink_ext_ack *extack); 20595106f4a8SDmitry Safonov 206096392ee5SDmitry Safonov /* Translate 32-bit user_policy from sockptr */ 206196392ee5SDmitry Safonov int (*xlate_user_policy_sockptr)(u8 **pdata32, int optlen); 206296392ee5SDmitry Safonov 2063c9e7c76dSDmitry Safonov struct module *owner; 2064c9e7c76dSDmitry Safonov }; 2065c9e7c76dSDmitry Safonov 2066c9e7c76dSDmitry Safonov #if IS_ENABLED(CONFIG_XFRM_USER_COMPAT) 2067c9e7c76dSDmitry Safonov extern int xfrm_register_translator(struct xfrm_translator *xtr); 2068c9e7c76dSDmitry Safonov extern int xfrm_unregister_translator(struct xfrm_translator *xtr); 2069c9e7c76dSDmitry Safonov extern struct xfrm_translator *xfrm_get_translator(void); 2070c9e7c76dSDmitry Safonov extern void xfrm_put_translator(struct xfrm_translator *xtr); 2071c9e7c76dSDmitry Safonov #else 2072c9e7c76dSDmitry Safonov static inline struct xfrm_translator *xfrm_get_translator(void) 2073c9e7c76dSDmitry Safonov { 2074c9e7c76dSDmitry Safonov return NULL; 2075c9e7c76dSDmitry Safonov } 2076c9e7c76dSDmitry Safonov static inline void xfrm_put_translator(struct xfrm_translator *xtr) 2077c9e7c76dSDmitry Safonov { 2078c9e7c76dSDmitry Safonov } 2079c9e7c76dSDmitry Safonov #endif 2080c9e7c76dSDmitry Safonov 2081ede64dd2SFlorian Westphal #if IS_ENABLED(CONFIG_IPV6) 2082ede64dd2SFlorian Westphal static inline bool xfrm6_local_dontfrag(const struct sock *sk) 2083ede64dd2SFlorian Westphal { 2084ede64dd2SFlorian Westphal int proto; 2085ede64dd2SFlorian Westphal 2086ede64dd2SFlorian Westphal if (!sk || sk->sk_family != AF_INET6) 2087ede64dd2SFlorian Westphal return false; 2088ede64dd2SFlorian Westphal 2089ede64dd2SFlorian Westphal proto = sk->sk_protocol; 2090ede64dd2SFlorian Westphal if (proto == IPPROTO_UDP || proto == IPPROTO_RAW) 2091ede64dd2SFlorian Westphal return inet6_sk(sk)->dontfrag; 2092ede64dd2SFlorian Westphal 2093ede64dd2SFlorian Westphal return false; 2094ede64dd2SFlorian Westphal } 2095ede64dd2SFlorian Westphal #endif 20961da177e4SLinus Torvalds #endif /* _NET_XFRM_H */ 2097