Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _NET_XFRM_H |
| 2 | #define _NET_XFRM_H |
| 3 | |
Herbert Xu | aabc976 | 2005-05-03 16:27:10 -0700 | [diff] [blame] | 4 | #include <linux/compiler.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | #include <linux/xfrm.h> |
| 6 | #include <linux/spinlock.h> |
| 7 | #include <linux/list.h> |
| 8 | #include <linux/skbuff.h> |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 9 | #include <linux/socket.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | #include <linux/pfkeyv2.h> |
Masahide NAKAMURA | 5794708 | 2006-09-22 15:06:24 -0700 | [diff] [blame] | 11 | #include <linux/ipsec.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/in6.h> |
Arjan van de Ven | 4a3e2f7 | 2006-03-20 22:33:17 -0800 | [diff] [blame] | 13 | #include <linux/mutex.h> |
Joy Latten | ab5f5e8 | 2007-09-17 11:51:22 -0700 | [diff] [blame] | 14 | #include <linux/audit.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 15 | #include <linux/slab.h> |
Reshetova, Elena | 88755e9 | 2017-07-04 15:53:21 +0300 | [diff] [blame] | 16 | #include <linux/refcount.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
| 18 | #include <net/sock.h> |
| 19 | #include <net/dst.h> |
Herbert Xu | 436a0a4 | 2007-10-08 17:25:53 -0700 | [diff] [blame] | 20 | #include <net/ip.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <net/route.h> |
| 22 | #include <net/ipv6.h> |
| 23 | #include <net/ip6_fib.h> |
Timo Teräs | fe1a5f0 | 2010-04-07 00:30:04 +0000 | [diff] [blame] | 24 | #include <net/flow.h> |
Yury Polyanskiy | 9e0d57f | 2009-11-08 20:58:41 -0800 | [diff] [blame] | 25 | |
| 26 | #include <linux/interrupt.h> |
| 27 | |
Masahide NAKAMURA | 558f82e | 2007-12-20 20:42:57 -0800 | [diff] [blame] | 28 | #ifdef CONFIG_XFRM_STATISTICS |
| 29 | #include <net/snmp.h> |
| 30 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
Masahide NAKAMURA | d3d6dd3 | 2007-06-26 23:57:49 -0700 | [diff] [blame] | 32 | #define XFRM_PROTO_ESP 50 |
| 33 | #define XFRM_PROTO_AH 51 |
| 34 | #define XFRM_PROTO_COMP 108 |
| 35 | #define XFRM_PROTO_IPIP 4 |
| 36 | #define XFRM_PROTO_IPV6 41 |
| 37 | #define XFRM_PROTO_ROUTING IPPROTO_ROUTING |
| 38 | #define XFRM_PROTO_DSTOPTS IPPROTO_DSTOPTS |
| 39 | |
Nicolas Dichtel | fa9921e | 2011-02-02 06:29:02 +0000 | [diff] [blame] | 40 | #define XFRM_ALIGN4(len) (((len) + 3) & ~3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #define XFRM_ALIGN8(len) (((len) + 7) & ~7) |
Herbert Xu | b59f45d | 2006-05-27 23:05:54 -0700 | [diff] [blame] | 42 | #define MODULE_ALIAS_XFRM_MODE(family, encap) \ |
| 43 | MODULE_ALIAS("xfrm-mode-" __stringify(family) "-" __stringify(encap)) |
Masahide NAKAMURA | d3d6dd3 | 2007-06-26 23:57:49 -0700 | [diff] [blame] | 44 | #define MODULE_ALIAS_XFRM_TYPE(family, proto) \ |
| 45 | MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto)) |
Ilan Tayari | ffdb521 | 2017-08-01 12:49:08 +0300 | [diff] [blame] | 46 | #define MODULE_ALIAS_XFRM_OFFLOAD_TYPE(family, proto) \ |
| 47 | MODULE_ALIAS("xfrm-offload-" __stringify(family) "-" __stringify(proto)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
Masahide NAKAMURA | 558f82e | 2007-12-20 20:42:57 -0800 | [diff] [blame] | 49 | #ifdef CONFIG_XFRM_STATISTICS |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 50 | #define XFRM_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.xfrm_statistics, field) |
Masahide NAKAMURA | 558f82e | 2007-12-20 20:42:57 -0800 | [diff] [blame] | 51 | #else |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 52 | #define XFRM_INC_STATS(net, field) ((void)(net)) |
Masahide NAKAMURA | 558f82e | 2007-12-20 20:42:57 -0800 | [diff] [blame] | 53 | #endif |
| 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | /* Organization of SPD aka "XFRM rules" |
| 57 | ------------------------------------ |
| 58 | |
| 59 | Basic objects: |
| 60 | - policy rule, struct xfrm_policy (=SPD entry) |
| 61 | - bundle of transformations, struct dst_entry == struct xfrm_dst (=SA bundle) |
| 62 | - instance of a transformer, struct xfrm_state (=SA) |
| 63 | - template to clone xfrm_state, struct xfrm_tmpl |
| 64 | |
| 65 | SPD is plain linear list of xfrm_policy rules, ordered by priority. |
| 66 | (To be compatible with existing pfkeyv2 implementations, |
| 67 | many rules with priority of 0x7fffffff are allowed to exist and |
| 68 | such rules are ordered in an unpredictable way, thanks to bsd folks.) |
| 69 | |
| 70 | Lookup is plain linear search until the first match with selector. |
| 71 | |
| 72 | If "action" is "block", then we prohibit the flow, otherwise: |
| 73 | if "xfrms_nr" is zero, the flow passes untransformed. Otherwise, |
| 74 | policy entry has list of up to XFRM_MAX_DEPTH transformations, |
| 75 | described by templates xfrm_tmpl. Each template is resolved |
| 76 | to a complete xfrm_state (see below) and we pack bundle of transformations |
| 77 | to a dst_entry returned to requestor. |
| 78 | |
| 79 | dst -. xfrm .-> xfrm_state #1 |
| 80 | |---. child .-> dst -. xfrm .-> xfrm_state #2 |
| 81 | |---. child .-> dst -. xfrm .-> xfrm_state #3 |
| 82 | |---. child .-> NULL |
| 83 | |
| 84 | Bundles are cached at xrfm_policy struct (field ->bundles). |
| 85 | |
| 86 | |
| 87 | Resolution of xrfm_tmpl |
| 88 | ----------------------- |
| 89 | Template contains: |
| 90 | 1. ->mode Mode: transport or tunnel |
| 91 | 2. ->id.proto Protocol: AH/ESP/IPCOMP |
| 92 | 3. ->id.daddr Remote tunnel endpoint, ignored for transport mode. |
| 93 | Q: allow to resolve security gateway? |
| 94 | 4. ->id.spi If not zero, static SPI. |
| 95 | 5. ->saddr Local tunnel endpoint, ignored for transport mode. |
| 96 | 6. ->algos List of allowed algos. Plain bitmask now. |
| 97 | Q: ealgos, aalgos, calgos. What a mess... |
| 98 | 7. ->share Sharing mode. |
| 99 | Q: how to implement private sharing mode? To add struct sock* to |
| 100 | flow id? |
| 101 | |
| 102 | Having this template we search through SAD searching for entries |
| 103 | with appropriate mode/proto/algo, permitted by selector. |
| 104 | If no appropriate entry found, it is requested from key manager. |
| 105 | |
| 106 | PROBLEMS: |
| 107 | Q: How to find all the bundles referring to a physical path for |
| 108 | PMTU discovery? Seems, dst should contain list of all parents... |
| 109 | and enter to infinite locking hierarchy disaster. |
| 110 | No! It is easier, we will not search for them, let them find us. |
| 111 | We add genid to each dst plus pointer to genid of raw IP route, |
| 112 | pmtu disc will update pmtu on raw IP route and increase its genid. |
| 113 | dst_check() will see this for top level and trigger resyncing |
| 114 | metrics. Plus, it will be made via sk->sk_dst_cache. Solved. |
| 115 | */ |
| 116 | |
Herbert Xu | 12a169e | 2008-10-01 07:03:24 -0700 | [diff] [blame] | 117 | struct xfrm_state_walk { |
| 118 | struct list_head all; |
| 119 | u8 state; |
Nicolas Dichtel | d362309 | 2014-02-14 15:30:36 +0100 | [diff] [blame] | 120 | u8 dying; |
| 121 | u8 proto; |
Herbert Xu | 12a169e | 2008-10-01 07:03:24 -0700 | [diff] [blame] | 122 | u32 seq; |
Nicolas Dichtel | 870a2df | 2014-03-06 18:24:29 +0100 | [diff] [blame] | 123 | struct xfrm_address_filter *filter; |
Herbert Xu | 12a169e | 2008-10-01 07:03:24 -0700 | [diff] [blame] | 124 | }; |
| 125 | |
Steffen Klassert | d77e38e | 2017-04-14 10:06:10 +0200 | [diff] [blame] | 126 | struct xfrm_state_offload { |
| 127 | struct net_device *dev; |
| 128 | unsigned long offload_handle; |
| 129 | unsigned int num_exthdrs; |
| 130 | u8 flags; |
| 131 | }; |
| 132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | /* Full description of state of transformer. */ |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 134 | struct xfrm_state { |
Eric W. Biederman | 0c5c9fb | 2015-03-11 23:06:44 -0500 | [diff] [blame] | 135 | possible_net_t xs_net; |
Herbert Xu | abb81c4 | 2008-09-09 19:58:29 -0700 | [diff] [blame] | 136 | union { |
Herbert Xu | 12a169e | 2008-10-01 07:03:24 -0700 | [diff] [blame] | 137 | struct hlist_node gclist; |
Herbert Xu | abb81c4 | 2008-09-09 19:58:29 -0700 | [diff] [blame] | 138 | struct hlist_node bydst; |
| 139 | }; |
David S. Miller | 8f126e3 | 2006-08-24 02:45:07 -0700 | [diff] [blame] | 140 | struct hlist_node bysrc; |
| 141 | struct hlist_node byspi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
Reshetova, Elena | 88755e9 | 2017-07-04 15:53:21 +0300 | [diff] [blame] | 143 | refcount_t refcnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | spinlock_t lock; |
| 145 | |
| 146 | struct xfrm_id id; |
| 147 | struct xfrm_selector sel; |
Jamal Hadi Salim | bf825f8 | 2010-02-22 11:32:54 +0000 | [diff] [blame] | 148 | struct xfrm_mark mark; |
Martin Willi | 35d2856 | 2010-12-08 04:37:49 +0000 | [diff] [blame] | 149 | u32 tfcpad; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
David S. Miller | 9d4a706 | 2006-08-24 03:18:09 -0700 | [diff] [blame] | 151 | u32 genid; |
| 152 | |
Herbert Xu | 12a169e | 2008-10-01 07:03:24 -0700 | [diff] [blame] | 153 | /* Key manager bits */ |
| 154 | struct xfrm_state_walk km; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
| 156 | /* Parameters of this state. */ |
| 157 | struct { |
| 158 | u32 reqid; |
| 159 | u8 mode; |
| 160 | u8 replay_window; |
| 161 | u8 aalgo, ealgo, calgo; |
| 162 | u8 flags; |
| 163 | u16 family; |
| 164 | xfrm_address_t saddr; |
| 165 | int header_len; |
| 166 | int trailer_len; |
Nicolas Dichtel | a947b0a | 2013-02-22 10:54:54 +0100 | [diff] [blame] | 167 | u32 extra_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | } props; |
| 169 | |
| 170 | struct xfrm_lifetime_cfg lft; |
| 171 | |
| 172 | /* Data for transformer */ |
Martin Willi | 4447bb3 | 2009-11-25 00:29:52 +0000 | [diff] [blame] | 173 | struct xfrm_algo_auth *aalg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | struct xfrm_algo *ealg; |
| 175 | struct xfrm_algo *calg; |
Herbert Xu | 1a6509d | 2008-01-28 19:37:29 -0800 | [diff] [blame] | 176 | struct xfrm_algo_aead *aead; |
Herbert Xu | 69b0137 | 2015-05-27 16:03:45 +0800 | [diff] [blame] | 177 | const char *geniv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | |
| 179 | /* Data for encapsulator */ |
| 180 | struct xfrm_encap_tmpl *encap; |
| 181 | |
Noriaki TAKAMIYA | 060f02a | 2006-08-23 18:18:55 -0700 | [diff] [blame] | 182 | /* Data for care-of address */ |
| 183 | xfrm_address_t *coaddr; |
| 184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | /* IPComp needs an IPIP tunnel for handling uncompressed packets */ |
| 186 | struct xfrm_state *tunnel; |
| 187 | |
| 188 | /* If a tunnel, number of users + 1 */ |
| 189 | atomic_t tunnel_users; |
| 190 | |
| 191 | /* State for replay detection */ |
| 192 | struct xfrm_replay_state replay; |
Steffen Klassert | 9736acf | 2011-03-08 00:05:43 +0000 | [diff] [blame] | 193 | struct xfrm_replay_state_esn *replay_esn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
Jamal Hadi Salim | f8cd548 | 2006-03-20 19:15:11 -0800 | [diff] [blame] | 195 | /* Replay detection state at the time we sent the last notification */ |
| 196 | struct xfrm_replay_state preplay; |
Steffen Klassert | 9736acf | 2011-03-08 00:05:43 +0000 | [diff] [blame] | 197 | struct xfrm_replay_state_esn *preplay_esn; |
Jamal Hadi Salim | f8cd548 | 2006-03-20 19:15:11 -0800 | [diff] [blame] | 198 | |
Steffen Klassert | 9fdc488 | 2011-03-08 00:08:32 +0000 | [diff] [blame] | 199 | /* The functions for replay detection. */ |
Julia Lawall | e45a8a9 | 2016-08-09 18:27:08 +0200 | [diff] [blame] | 200 | const struct xfrm_replay *repl; |
Steffen Klassert | 9fdc488 | 2011-03-08 00:08:32 +0000 | [diff] [blame] | 201 | |
Jamal Hadi Salim | 2717096 | 2006-04-14 15:03:05 -0700 | [diff] [blame] | 202 | /* internal flag that only holds state for delayed aevent at the |
| 203 | * moment |
| 204 | */ |
| 205 | u32 xflags; |
| 206 | |
Jamal Hadi Salim | f8cd548 | 2006-03-20 19:15:11 -0800 | [diff] [blame] | 207 | /* Replay detection notification settings */ |
| 208 | u32 replay_maxage; |
| 209 | u32 replay_maxdiff; |
| 210 | |
| 211 | /* Replay detection notification timer */ |
| 212 | struct timer_list rtimer; |
| 213 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | /* Statistics */ |
| 215 | struct xfrm_stats stats; |
| 216 | |
| 217 | struct xfrm_lifetime_cur curlft; |
Yury Polyanskiy | 9e0d57f | 2009-11-08 20:58:41 -0800 | [diff] [blame] | 218 | struct tasklet_hrtimer mtimer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | |
Steffen Klassert | d77e38e | 2017-04-14 10:06:10 +0200 | [diff] [blame] | 220 | struct xfrm_state_offload xso; |
| 221 | |
Fan Du | e3c0d04 | 2012-07-30 21:43:54 +0000 | [diff] [blame] | 222 | /* used to fix curlft->add_time when changing date */ |
| 223 | long saved_tmo; |
| 224 | |
Masahide NAKAMURA | 9afaca0 | 2006-08-23 18:20:16 -0700 | [diff] [blame] | 225 | /* Last used time */ |
Herbert Xu | d26f398 | 2007-11-13 21:47:08 -0800 | [diff] [blame] | 226 | unsigned long lastused; |
Masahide NAKAMURA | 9afaca0 | 2006-08-23 18:20:16 -0700 | [diff] [blame] | 227 | |
Steffen Klassert | cac2661 | 2017-01-17 10:22:57 +0100 | [diff] [blame] | 228 | struct page_frag xfrag; |
| 229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | /* Reference to data common to all the instances of this |
| 231 | * transformer. */ |
Eric Dumazet | 533cb5b | 2008-01-30 19:11:50 -0800 | [diff] [blame] | 232 | const struct xfrm_type *type; |
Herbert Xu | 1399637 | 2007-10-17 21:35:51 -0700 | [diff] [blame] | 233 | struct xfrm_mode *inner_mode; |
Kazunori MIYAZAWA | df9dcb4 | 2008-03-24 14:51:51 -0700 | [diff] [blame] | 234 | struct xfrm_mode *inner_mode_iaf; |
Herbert Xu | 1399637 | 2007-10-17 21:35:51 -0700 | [diff] [blame] | 235 | struct xfrm_mode *outer_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
Steffen Klassert | 9d389d7 | 2017-04-14 10:05:44 +0200 | [diff] [blame] | 237 | const struct xfrm_type_offload *type_offload; |
| 238 | |
Trent Jaeger | df71837 | 2005-12-13 23:12:27 -0800 | [diff] [blame] | 239 | /* Security context */ |
| 240 | struct xfrm_sec_ctx *security; |
| 241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | /* Private data of this transformer, format is opaque, |
| 243 | * interpreted by xfrm_type methods. */ |
| 244 | void *data; |
| 245 | }; |
| 246 | |
Alexey Dobriyan | 673c09b | 2008-11-25 17:15:16 -0800 | [diff] [blame] | 247 | static inline struct net *xs_net(struct xfrm_state *x) |
| 248 | { |
| 249 | return read_pnet(&x->xs_net); |
| 250 | } |
| 251 | |
Jamal Hadi Salim | 2717096 | 2006-04-14 15:03:05 -0700 | [diff] [blame] | 252 | /* xflags - make enum if more show up */ |
| 253 | #define XFRM_TIME_DEFER 1 |
Fan Du | e3c0d04 | 2012-07-30 21:43:54 +0000 | [diff] [blame] | 254 | #define XFRM_SOFT_EXPIRE 2 |
Jamal Hadi Salim | 2717096 | 2006-04-14 15:03:05 -0700 | [diff] [blame] | 255 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | enum { |
| 257 | XFRM_STATE_VOID, |
| 258 | XFRM_STATE_ACQ, |
| 259 | XFRM_STATE_VALID, |
| 260 | XFRM_STATE_ERROR, |
| 261 | XFRM_STATE_EXPIRED, |
| 262 | XFRM_STATE_DEAD |
| 263 | }; |
| 264 | |
Jamal Hadi Salim | 26b15da | 2005-06-18 22:42:13 -0700 | [diff] [blame] | 265 | /* callback structure passed from either netlink or pfkey */ |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 266 | struct km_event { |
Herbert Xu | bf08867 | 2005-06-18 22:44:00 -0700 | [diff] [blame] | 267 | union { |
| 268 | u32 hard; |
| 269 | u32 proto; |
| 270 | u32 byid; |
Jamal Hadi Salim | f8cd548 | 2006-03-20 19:15:11 -0800 | [diff] [blame] | 271 | u32 aevent; |
Masahide NAKAMURA | f7b6983 | 2006-08-23 22:49:28 -0700 | [diff] [blame] | 272 | u32 type; |
Herbert Xu | bf08867 | 2005-06-18 22:44:00 -0700 | [diff] [blame] | 273 | } data; |
| 274 | |
Jamal Hadi Salim | 26b15da | 2005-06-18 22:42:13 -0700 | [diff] [blame] | 275 | u32 seq; |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 276 | u32 portid; |
Jamal Hadi Salim | 26b15da | 2005-06-18 22:42:13 -0700 | [diff] [blame] | 277 | u32 event; |
Alexey Dobriyan | 7067802 | 2008-11-25 17:50:36 -0800 | [diff] [blame] | 278 | struct net *net; |
Jamal Hadi Salim | 26b15da | 2005-06-18 22:42:13 -0700 | [diff] [blame] | 279 | }; |
| 280 | |
Steffen Klassert | 9fdc488 | 2011-03-08 00:08:32 +0000 | [diff] [blame] | 281 | struct xfrm_replay { |
| 282 | void (*advance)(struct xfrm_state *x, __be32 net_seq); |
| 283 | int (*check)(struct xfrm_state *x, |
| 284 | struct sk_buff *skb, |
| 285 | __be32 net_seq); |
Steffen Klassert | 3b59df4 | 2012-09-04 00:03:29 +0000 | [diff] [blame] | 286 | int (*recheck)(struct xfrm_state *x, |
| 287 | struct sk_buff *skb, |
| 288 | __be32 net_seq); |
Steffen Klassert | 9fdc488 | 2011-03-08 00:08:32 +0000 | [diff] [blame] | 289 | void (*notify)(struct xfrm_state *x, int event); |
| 290 | int (*overflow)(struct xfrm_state *x, struct sk_buff *skb); |
| 291 | }; |
| 292 | |
Herbert Xu | 25ee328 | 2007-12-11 09:32:34 -0800 | [diff] [blame] | 293 | struct net_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | struct xfrm_type; |
| 295 | struct xfrm_dst; |
| 296 | struct xfrm_policy_afinfo { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | struct dst_ops *dst_ops; |
David Ahern | 42a7b32 | 2015-08-10 16:58:11 -0600 | [diff] [blame] | 298 | struct dst_entry *(*dst_lookup)(struct net *net, |
| 299 | int tos, int oif, |
David S. Miller | 5e6b930 | 2011-02-24 00:14:45 -0500 | [diff] [blame] | 300 | const xfrm_address_t *saddr, |
| 301 | const xfrm_address_t *daddr); |
David Ahern | 42a7b32 | 2015-08-10 16:58:11 -0600 | [diff] [blame] | 302 | int (*get_saddr)(struct net *net, int oif, |
| 303 | xfrm_address_t *saddr, |
| 304 | xfrm_address_t *daddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | void (*decode_session)(struct sk_buff *skb, |
Herbert Xu | d5422ef | 2007-12-12 10:44:16 -0800 | [diff] [blame] | 306 | struct flowi *fl, |
| 307 | int reverse); |
David S. Miller | 05d8402 | 2011-02-22 17:47:10 -0800 | [diff] [blame] | 308 | int (*get_tos)(const struct flowi *fl); |
Masahide NAKAMURA | a1b0514 | 2007-12-20 20:41:12 -0800 | [diff] [blame] | 309 | int (*init_path)(struct xfrm_dst *path, |
| 310 | struct dst_entry *dst, |
| 311 | int nfheader_len); |
Herbert Xu | 25ee328 | 2007-12-11 09:32:34 -0800 | [diff] [blame] | 312 | int (*fill_dst)(struct xfrm_dst *xdst, |
Herbert Xu | 87c1e12 | 2010-03-02 02:51:56 +0000 | [diff] [blame] | 313 | struct net_device *dev, |
David S. Miller | 0c7b3ee | 2011-02-22 17:48:57 -0800 | [diff] [blame] | 314 | const struct flowi *fl); |
David S. Miller | 2774c13 | 2011-03-01 14:59:04 -0800 | [diff] [blame] | 315 | struct dst_entry *(*blackhole_route)(struct net *net, struct dst_entry *orig); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | }; |
| 317 | |
Florian Westphal | a2817d8 | 2017-02-07 15:00:17 +0100 | [diff] [blame] | 318 | int xfrm_policy_register_afinfo(const struct xfrm_policy_afinfo *afinfo, int family); |
| 319 | void xfrm_policy_unregister_afinfo(const struct xfrm_policy_afinfo *afinfo); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 320 | void km_policy_notify(struct xfrm_policy *xp, int dir, |
| 321 | const struct km_event *c); |
Florian Westphal | ec30d78 | 2017-07-17 13:57:27 +0200 | [diff] [blame] | 322 | void xfrm_policy_cache_flush(void); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 323 | void km_state_notify(struct xfrm_state *x, const struct km_event *c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | |
| 325 | struct xfrm_tmpl; |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 326 | int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, |
| 327 | struct xfrm_policy *pol); |
| 328 | void km_state_expired(struct xfrm_state *x, int hard, u32 portid); |
| 329 | int __xfrm_state_delete(struct xfrm_state *x); |
Jamal Hadi Salim | 53bc6b4 | 2006-03-20 19:17:03 -0800 | [diff] [blame] | 330 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | struct xfrm_state_afinfo { |
Steffen Klassert | 9d389d7 | 2017-04-14 10:05:44 +0200 | [diff] [blame] | 332 | unsigned int family; |
| 333 | unsigned int proto; |
| 334 | __be16 eth_proto; |
| 335 | struct module *owner; |
| 336 | const struct xfrm_type *type_map[IPPROTO_MAX]; |
| 337 | const struct xfrm_type_offload *type_offload_map[IPPROTO_MAX]; |
| 338 | struct xfrm_mode *mode_map[XFRM_MODE_MAX]; |
| 339 | |
Herbert Xu | d094cd8 | 2005-06-20 13:19:41 -0700 | [diff] [blame] | 340 | int (*init_flags)(struct xfrm_state *x); |
David S. Miller | 73e5ebb | 2011-02-22 17:51:44 -0800 | [diff] [blame] | 341 | void (*init_tempsel)(struct xfrm_selector *sel, |
| 342 | const struct flowi *fl); |
David S. Miller | 19bd624 | 2011-02-24 00:07:20 -0500 | [diff] [blame] | 343 | void (*init_temprop)(struct xfrm_state *x, |
| 344 | const struct xfrm_tmpl *tmpl, |
| 345 | const xfrm_address_t *daddr, |
| 346 | const xfrm_address_t *saddr); |
Masahide NAKAMURA | 41a49cc | 2006-08-23 22:48:31 -0700 | [diff] [blame] | 347 | int (*tmpl_sort)(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n); |
| 348 | int (*state_sort)(struct xfrm_state **dst, struct xfrm_state **src, int n); |
Eric W. Biederman | ede2059 | 2015-10-07 16:48:47 -0500 | [diff] [blame] | 349 | int (*output)(struct net *net, struct sock *sk, struct sk_buff *skb); |
David Miller | 7026b1d | 2015-04-05 22:19:04 -0400 | [diff] [blame] | 350 | int (*output_finish)(struct sock *sk, struct sk_buff *skb); |
Herbert Xu | 227620e | 2007-11-13 21:41:28 -0800 | [diff] [blame] | 351 | int (*extract_input)(struct xfrm_state *x, |
| 352 | struct sk_buff *skb); |
Herbert Xu | 36cf9ac | 2007-11-13 21:40:52 -0800 | [diff] [blame] | 353 | int (*extract_output)(struct xfrm_state *x, |
| 354 | struct sk_buff *skb); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 355 | int (*transport_finish)(struct sk_buff *skb, |
| 356 | int async); |
Hannes Frederic Sowa | 628e341 | 2013-08-14 13:05:23 +0200 | [diff] [blame] | 357 | void (*local_error)(struct sk_buff *skb, u32 mtu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | }; |
| 359 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 360 | int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo); |
| 361 | int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo); |
| 362 | struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family); |
Florian Westphal | 711059b | 2017-01-09 14:20:48 +0100 | [diff] [blame] | 363 | struct xfrm_state_afinfo *xfrm_state_afinfo_get_rcu(unsigned int family); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | |
Steffen Klassert | 2f32b51 | 2014-03-14 07:28:07 +0100 | [diff] [blame] | 365 | struct xfrm_input_afinfo { |
| 366 | unsigned int family; |
Steffen Klassert | 2f32b51 | 2014-03-14 07:28:07 +0100 | [diff] [blame] | 367 | int (*callback)(struct sk_buff *skb, u8 protocol, |
| 368 | int err); |
| 369 | }; |
| 370 | |
Florian Westphal | 960fdfd | 2017-02-07 14:52:30 +0100 | [diff] [blame] | 371 | int xfrm_input_register_afinfo(const struct xfrm_input_afinfo *afinfo); |
| 372 | int xfrm_input_unregister_afinfo(const struct xfrm_input_afinfo *afinfo); |
Steffen Klassert | 2f32b51 | 2014-03-14 07:28:07 +0100 | [diff] [blame] | 373 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 374 | void xfrm_state_delete_tunnel(struct xfrm_state *x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 376 | struct xfrm_type { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | char *description; |
| 378 | struct module *owner; |
jamal | a633746 | 2010-02-09 13:21:17 +0000 | [diff] [blame] | 379 | u8 proto; |
| 380 | u8 flags; |
Masahide NAKAMURA | 1b5c229 | 2006-08-23 18:11:50 -0700 | [diff] [blame] | 381 | #define XFRM_TYPE_NON_FRAGMENT 1 |
Herbert Xu | 436a0a4 | 2007-10-08 17:25:53 -0700 | [diff] [blame] | 382 | #define XFRM_TYPE_REPLAY_PROT 2 |
Herbert Xu | f04e7e8 | 2007-11-13 21:36:51 -0800 | [diff] [blame] | 383 | #define XFRM_TYPE_LOCAL_COADDR 4 |
| 384 | #define XFRM_TYPE_REMOTE_COADDR 8 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
Herbert Xu | 72cb696 | 2005-06-20 13:18:08 -0700 | [diff] [blame] | 386 | int (*init_state)(struct xfrm_state *x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | void (*destructor)(struct xfrm_state *); |
Herbert Xu | e695633 | 2006-04-01 00:52:46 -0800 | [diff] [blame] | 388 | int (*input)(struct xfrm_state *, struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | int (*output)(struct xfrm_state *, struct sk_buff *pskb); |
David S. Miller | 8f029de | 2011-02-22 17:59:59 -0800 | [diff] [blame] | 390 | int (*reject)(struct xfrm_state *, struct sk_buff *, |
| 391 | const struct flowi *); |
Masahide NAKAMURA | aee5adb | 2006-08-23 17:57:28 -0700 | [diff] [blame] | 392 | int (*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | /* Estimate maximal size of result of transformation of a dgram */ |
Patrick McHardy | c5c2523 | 2007-04-09 11:47:18 -0700 | [diff] [blame] | 394 | u32 (*get_mtu)(struct xfrm_state *, int size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | }; |
| 396 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 397 | int xfrm_register_type(const struct xfrm_type *type, unsigned short family); |
| 398 | int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
Steffen Klassert | 9d389d7 | 2017-04-14 10:05:44 +0200 | [diff] [blame] | 400 | struct xfrm_type_offload { |
| 401 | char *description; |
| 402 | struct module *owner; |
| 403 | u8 proto; |
| 404 | void (*encap)(struct xfrm_state *, struct sk_buff *pskb); |
| 405 | int (*input_tail)(struct xfrm_state *x, struct sk_buff *skb); |
| 406 | int (*xmit)(struct xfrm_state *, struct sk_buff *pskb, netdev_features_t features); |
| 407 | }; |
| 408 | |
| 409 | int xfrm_register_type_offload(const struct xfrm_type_offload *type, unsigned short family); |
| 410 | int xfrm_unregister_type_offload(const struct xfrm_type_offload *type, unsigned short family); |
| 411 | |
Herbert Xu | b59f45d | 2006-05-27 23:05:54 -0700 | [diff] [blame] | 412 | struct xfrm_mode { |
Herbert Xu | 227620e | 2007-11-13 21:41:28 -0800 | [diff] [blame] | 413 | /* |
| 414 | * Remove encapsulation header. |
| 415 | * |
| 416 | * The IP header will be moved over the top of the encapsulation |
| 417 | * header. |
| 418 | * |
| 419 | * On entry, the transport header shall point to where the IP header |
| 420 | * should be and the network header shall be set to where the IP |
| 421 | * header currently is. skb->data shall point to the start of the |
| 422 | * payload. |
| 423 | */ |
| 424 | int (*input2)(struct xfrm_state *x, struct sk_buff *skb); |
| 425 | |
| 426 | /* |
| 427 | * This is the actual input entry point. |
| 428 | * |
| 429 | * For transport mode and equivalent this would be identical to |
| 430 | * input2 (which does not need to be set). While tunnel mode |
| 431 | * and equivalent would set this to the tunnel encapsulation function |
| 432 | * xfrm4_prepare_input that would in turn call input2. |
| 433 | */ |
Herbert Xu | b59f45d | 2006-05-27 23:05:54 -0700 | [diff] [blame] | 434 | int (*input)(struct xfrm_state *x, struct sk_buff *skb); |
Herbert Xu | 37fedd3 | 2007-10-10 15:44:44 -0700 | [diff] [blame] | 435 | |
| 436 | /* |
| 437 | * Add encapsulation header. |
| 438 | * |
| 439 | * On exit, the transport header will be set to the start of the |
| 440 | * encapsulation header to be filled in by x->type->output and |
| 441 | * the mac header will be set to the nextheader (protocol for |
| 442 | * IPv4) field of the extension header directly preceding the |
| 443 | * encapsulation header, or in its absence, that of the top IP |
| 444 | * header. The value of the network header will always point |
| 445 | * to the top IP header while skb->data will point to the payload. |
| 446 | */ |
Herbert Xu | 36cf9ac | 2007-11-13 21:40:52 -0800 | [diff] [blame] | 447 | int (*output2)(struct xfrm_state *x,struct sk_buff *skb); |
| 448 | |
| 449 | /* |
| 450 | * This is the actual output entry point. |
| 451 | * |
| 452 | * For transport mode and equivalent this would be identical to |
| 453 | * output2 (which does not need to be set). While tunnel mode |
| 454 | * and equivalent would set this to a tunnel encapsulation function |
| 455 | * (xfrm4_prepare_output or xfrm6_prepare_output) that would in turn |
| 456 | * call output2. |
| 457 | */ |
| 458 | int (*output)(struct xfrm_state *x, struct sk_buff *skb); |
Herbert Xu | b59f45d | 2006-05-27 23:05:54 -0700 | [diff] [blame] | 459 | |
Steffen Klassert | c35fe41 | 2017-04-14 10:06:01 +0200 | [diff] [blame] | 460 | /* |
| 461 | * Adjust pointers into the packet and do GSO segmentation. |
| 462 | */ |
| 463 | struct sk_buff *(*gso_segment)(struct xfrm_state *x, struct sk_buff *skb, netdev_features_t features); |
| 464 | |
| 465 | /* |
| 466 | * Adjust pointers into the packet when IPsec is done at layer2. |
| 467 | */ |
| 468 | void (*xmit)(struct xfrm_state *x, struct sk_buff *skb); |
| 469 | |
Herbert Xu | 17c2a42 | 2007-10-17 21:33:12 -0700 | [diff] [blame] | 470 | struct xfrm_state_afinfo *afinfo; |
Herbert Xu | b59f45d | 2006-05-27 23:05:54 -0700 | [diff] [blame] | 471 | struct module *owner; |
| 472 | unsigned int encap; |
Herbert Xu | 1bfcb10 | 2007-10-17 21:31:50 -0700 | [diff] [blame] | 473 | int flags; |
| 474 | }; |
| 475 | |
| 476 | /* Flags for xfrm_mode. */ |
| 477 | enum { |
| 478 | XFRM_MODE_FLAG_TUNNEL = 1, |
Herbert Xu | b59f45d | 2006-05-27 23:05:54 -0700 | [diff] [blame] | 479 | }; |
| 480 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 481 | int xfrm_register_mode(struct xfrm_mode *mode, int family); |
| 482 | int xfrm_unregister_mode(struct xfrm_mode *mode, int family); |
Herbert Xu | b59f45d | 2006-05-27 23:05:54 -0700 | [diff] [blame] | 483 | |
Kazunori MIYAZAWA | df9dcb4 | 2008-03-24 14:51:51 -0700 | [diff] [blame] | 484 | static inline int xfrm_af2proto(unsigned int family) |
| 485 | { |
| 486 | switch(family) { |
| 487 | case AF_INET: |
| 488 | return IPPROTO_IPIP; |
| 489 | case AF_INET6: |
| 490 | return IPPROTO_IPV6; |
| 491 | default: |
| 492 | return 0; |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | static inline struct xfrm_mode *xfrm_ip2inner_mode(struct xfrm_state *x, int ipproto) |
| 497 | { |
| 498 | if ((ipproto == IPPROTO_IPIP && x->props.family == AF_INET) || |
| 499 | (ipproto == IPPROTO_IPV6 && x->props.family == AF_INET6)) |
| 500 | return x->inner_mode; |
| 501 | else |
| 502 | return x->inner_mode_iaf; |
| 503 | } |
| 504 | |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 505 | struct xfrm_tmpl { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | /* id in template is interpreted as: |
| 507 | * daddr - destination of tunnel, may be zero for transport mode. |
| 508 | * spi - zero to acquire spi. Not zero if spi is static, then |
| 509 | * daddr must be fixed too. |
| 510 | * proto - AH/ESP/IPCOMP |
| 511 | */ |
| 512 | struct xfrm_id id; |
| 513 | |
| 514 | /* Source address of tunnel. Ignored, if it is not a tunnel. */ |
| 515 | xfrm_address_t saddr; |
| 516 | |
Miika Komu | 76b3f05 | 2006-11-30 16:40:43 -0800 | [diff] [blame] | 517 | unsigned short encap_family; |
| 518 | |
jamal | a633746 | 2010-02-09 13:21:17 +0000 | [diff] [blame] | 519 | u32 reqid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | |
Masahide NAKAMURA | 7e49e6d | 2006-09-22 15:05:15 -0700 | [diff] [blame] | 521 | /* Mode: transport, tunnel etc. */ |
jamal | a633746 | 2010-02-09 13:21:17 +0000 | [diff] [blame] | 522 | u8 mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | |
| 524 | /* Sharing mode: unique, this session only, this user only etc. */ |
jamal | a633746 | 2010-02-09 13:21:17 +0000 | [diff] [blame] | 525 | u8 share; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
| 527 | /* May skip this transfomration if no SA is found */ |
jamal | a633746 | 2010-02-09 13:21:17 +0000 | [diff] [blame] | 528 | u8 optional; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
Herbert Xu | c5d18e9 | 2008-04-22 00:46:42 -0700 | [diff] [blame] | 530 | /* Skip aalgos/ealgos/calgos checks. */ |
jamal | a633746 | 2010-02-09 13:21:17 +0000 | [diff] [blame] | 531 | u8 allalgs; |
Herbert Xu | c5d18e9 | 2008-04-22 00:46:42 -0700 | [diff] [blame] | 532 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | /* Bit mask of algos allowed for acquisition */ |
jamal | a633746 | 2010-02-09 13:21:17 +0000 | [diff] [blame] | 534 | u32 aalgos; |
| 535 | u32 ealgos; |
| 536 | u32 calgos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | }; |
| 538 | |
Masahide NAKAMURA | 622dc82 | 2006-08-23 17:52:01 -0700 | [diff] [blame] | 539 | #define XFRM_MAX_DEPTH 6 |
Steffen Klassert | 54ef207 | 2017-02-15 09:39:54 +0100 | [diff] [blame] | 540 | #define XFRM_MAX_OFFLOAD_DEPTH 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | |
Herbert Xu | 12a169e | 2008-10-01 07:03:24 -0700 | [diff] [blame] | 542 | struct xfrm_policy_walk_entry { |
| 543 | struct list_head all; |
| 544 | u8 dead; |
| 545 | }; |
| 546 | |
| 547 | struct xfrm_policy_walk { |
| 548 | struct xfrm_policy_walk_entry walk; |
| 549 | u8 type; |
| 550 | u32 seq; |
| 551 | }; |
| 552 | |
Steffen Klassert | a0073fe | 2013-02-05 12:52:55 +0100 | [diff] [blame] | 553 | struct xfrm_policy_queue { |
| 554 | struct sk_buff_head hold_queue; |
| 555 | struct timer_list hold_timer; |
| 556 | unsigned long timeout; |
| 557 | }; |
| 558 | |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 559 | struct xfrm_policy { |
Eric W. Biederman | 0c5c9fb | 2015-03-11 23:06:44 -0500 | [diff] [blame] | 560 | possible_net_t xp_net; |
David S. Miller | 2518c7c | 2006-08-24 04:45:07 -0700 | [diff] [blame] | 561 | struct hlist_node bydst; |
| 562 | struct hlist_node byidx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | |
| 564 | /* This lock only affects elements except for entry. */ |
| 565 | rwlock_t lock; |
Reshetova, Elena | 850a621 | 2017-07-04 15:53:22 +0300 | [diff] [blame] | 566 | refcount_t refcnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | struct timer_list timer; |
| 568 | |
Timo Teräs | 80c802f | 2010-04-07 00:30:05 +0000 | [diff] [blame] | 569 | atomic_t genid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | u32 priority; |
| 571 | u32 index; |
Jamal Hadi Salim | bf825f8 | 2010-02-22 11:32:54 +0000 | [diff] [blame] | 572 | struct xfrm_mark mark; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | struct xfrm_selector selector; |
| 574 | struct xfrm_lifetime_cfg lft; |
| 575 | struct xfrm_lifetime_cur curlft; |
Herbert Xu | 12a169e | 2008-10-01 07:03:24 -0700 | [diff] [blame] | 576 | struct xfrm_policy_walk_entry walk; |
Steffen Klassert | a0073fe | 2013-02-05 12:52:55 +0100 | [diff] [blame] | 577 | struct xfrm_policy_queue polq; |
Arnaldo Carvalho de Melo | 46ca5f5 | 2006-11-27 17:58:59 -0200 | [diff] [blame] | 578 | u8 type; |
| 579 | u8 action; |
| 580 | u8 flags; |
Arnaldo Carvalho de Melo | 46ca5f5 | 2006-11-27 17:58:59 -0200 | [diff] [blame] | 581 | u8 xfrm_nr; |
Herbert Xu | 12a169e | 2008-10-01 07:03:24 -0700 | [diff] [blame] | 582 | u16 family; |
Trent Jaeger | df71837 | 2005-12-13 23:12:27 -0800 | [diff] [blame] | 583 | struct xfrm_sec_ctx *security; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | struct xfrm_tmpl xfrm_vec[XFRM_MAX_DEPTH]; |
Eric Dumazet | 56f0473 | 2015-12-08 07:22:01 -0800 | [diff] [blame] | 585 | struct rcu_head rcu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | }; |
| 587 | |
David S. Miller | 63eb23f | 2011-02-24 01:25:19 -0500 | [diff] [blame] | 588 | static inline struct net *xp_net(const struct xfrm_policy *xp) |
Alexey Dobriyan | 0331b1f | 2008-11-25 17:21:45 -0800 | [diff] [blame] | 589 | { |
| 590 | return read_pnet(&xp->xp_net); |
| 591 | } |
| 592 | |
Arnaud Ebalard | 13c1d18 | 2008-10-05 13:33:42 -0700 | [diff] [blame] | 593 | struct xfrm_kmaddress { |
| 594 | xfrm_address_t local; |
| 595 | xfrm_address_t remote; |
| 596 | u32 reserved; |
| 597 | u16 family; |
| 598 | }; |
| 599 | |
Shinta Sugimoto | 80c9aba | 2007-02-08 13:11:42 -0800 | [diff] [blame] | 600 | struct xfrm_migrate { |
| 601 | xfrm_address_t old_daddr; |
| 602 | xfrm_address_t old_saddr; |
| 603 | xfrm_address_t new_daddr; |
| 604 | xfrm_address_t new_saddr; |
| 605 | u8 proto; |
| 606 | u8 mode; |
| 607 | u16 reserved; |
| 608 | u32 reqid; |
| 609 | u16 old_family; |
| 610 | u16 new_family; |
| 611 | }; |
| 612 | |
Jamal Hadi Salim | f8cd548 | 2006-03-20 19:15:11 -0800 | [diff] [blame] | 613 | #define XFRM_KM_TIMEOUT 30 |
Jamal Hadi Salim | f8cd548 | 2006-03-20 19:15:11 -0800 | [diff] [blame] | 614 | /* what happened */ |
| 615 | #define XFRM_REPLAY_UPDATE XFRM_AE_CR |
| 616 | #define XFRM_REPLAY_TIMEOUT XFRM_AE_CE |
| 617 | |
| 618 | /* default aevent timeout in units of 100ms */ |
| 619 | #define XFRM_AE_ETIME 10 |
| 620 | /* Async Event timer multiplier */ |
| 621 | #define XFRM_AE_ETH_M 10 |
| 622 | /* default seq threshold size */ |
| 623 | #define XFRM_AE_SEQT_SIZE 2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 625 | struct xfrm_mgr { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | struct list_head list; |
David S. Miller | 214e005 | 2011-02-24 00:02:38 -0500 | [diff] [blame] | 627 | int (*notify)(struct xfrm_state *x, const struct km_event *c); |
Fan Du | 65e0736 | 2012-08-15 10:13:47 +0800 | [diff] [blame] | 628 | int (*acquire)(struct xfrm_state *x, struct xfrm_tmpl *, struct xfrm_policy *xp); |
Venkat Yekkirala | cb969f0 | 2006-07-24 23:32:20 -0700 | [diff] [blame] | 629 | struct xfrm_policy *(*compile_policy)(struct sock *sk, int opt, u8 *data, int len, int *dir); |
Al Viro | 5d36b18 | 2006-11-08 00:24:06 -0800 | [diff] [blame] | 630 | int (*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport); |
David S. Miller | 214e005 | 2011-02-24 00:02:38 -0500 | [diff] [blame] | 631 | int (*notify_policy)(struct xfrm_policy *x, int dir, const struct km_event *c); |
Alexey Dobriyan | db983c1 | 2008-11-25 17:51:01 -0800 | [diff] [blame] | 632 | int (*report)(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr); |
David S. Miller | 183cad1 | 2011-02-24 00:28:01 -0500 | [diff] [blame] | 633 | int (*migrate)(const struct xfrm_selector *sel, |
| 634 | u8 dir, u8 type, |
| 635 | const struct xfrm_migrate *m, |
| 636 | int num_bundles, |
Antony Antony | 8bafd73 | 2017-06-06 12:12:14 +0200 | [diff] [blame] | 637 | const struct xfrm_kmaddress *k, |
| 638 | const struct xfrm_encap_tmpl *encap); |
Horia Geanta | 0f24558 | 2014-02-12 16:20:06 +0200 | [diff] [blame] | 639 | bool (*is_alive)(const struct km_event *c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | }; |
| 641 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 642 | int xfrm_register_km(struct xfrm_mgr *km); |
| 643 | int xfrm_unregister_km(struct xfrm_mgr *km); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
Steffen Klassert | 70be6c9 | 2014-02-21 08:41:09 +0100 | [diff] [blame] | 645 | struct xfrm_tunnel_skb_cb { |
| 646 | union { |
| 647 | struct inet_skb_parm h4; |
| 648 | struct inet6_skb_parm h6; |
| 649 | } header; |
| 650 | |
| 651 | union { |
| 652 | struct ip_tunnel *ip4; |
| 653 | struct ip6_tnl *ip6; |
| 654 | } tunnel; |
| 655 | }; |
| 656 | |
| 657 | #define XFRM_TUNNEL_SKB_CB(__skb) ((struct xfrm_tunnel_skb_cb *)&((__skb)->cb[0])) |
| 658 | |
Herbert Xu | 436a0a4 | 2007-10-08 17:25:53 -0700 | [diff] [blame] | 659 | /* |
| 660 | * This structure is used for the duration where packets are being |
| 661 | * transformed by IPsec. As soon as the packet leaves IPsec the |
| 662 | * area beyond the generic IP part may be overwritten. |
| 663 | */ |
| 664 | struct xfrm_skb_cb { |
Steffen Klassert | 70be6c9 | 2014-02-21 08:41:09 +0100 | [diff] [blame] | 665 | struct xfrm_tunnel_skb_cb header; |
Herbert Xu | 436a0a4 | 2007-10-08 17:25:53 -0700 | [diff] [blame] | 666 | |
| 667 | /* Sequence number for replay protection. */ |
Herbert Xu | b318e0e | 2008-02-12 22:50:35 -0800 | [diff] [blame] | 668 | union { |
Steffen Klassert | 1ce3644 | 2011-03-08 00:06:31 +0000 | [diff] [blame] | 669 | struct { |
| 670 | __u32 low; |
| 671 | __u32 hi; |
| 672 | } output; |
| 673 | struct { |
| 674 | __be32 low; |
| 675 | __be32 hi; |
| 676 | } input; |
Herbert Xu | b318e0e | 2008-02-12 22:50:35 -0800 | [diff] [blame] | 677 | } seq; |
Herbert Xu | 436a0a4 | 2007-10-08 17:25:53 -0700 | [diff] [blame] | 678 | }; |
| 679 | |
| 680 | #define XFRM_SKB_CB(__skb) ((struct xfrm_skb_cb *)&((__skb)->cb[0])) |
| 681 | |
Herbert Xu | 36cf9ac | 2007-11-13 21:40:52 -0800 | [diff] [blame] | 682 | /* |
| 683 | * This structure is used by the afinfo prepare_input/prepare_output functions |
| 684 | * to transmit header information to the mode input/output functions. |
| 685 | */ |
| 686 | struct xfrm_mode_skb_cb { |
Steffen Klassert | 70be6c9 | 2014-02-21 08:41:09 +0100 | [diff] [blame] | 687 | struct xfrm_tunnel_skb_cb header; |
Herbert Xu | 36cf9ac | 2007-11-13 21:40:52 -0800 | [diff] [blame] | 688 | |
| 689 | /* Copied from header for IPv4, always set to zero and DF for IPv6. */ |
| 690 | __be16 id; |
| 691 | __be16 frag_off; |
| 692 | |
Herbert Xu | 732c8bd | 2008-03-26 16:51:09 -0700 | [diff] [blame] | 693 | /* IP header length (excluding options or extension headers). */ |
| 694 | u8 ihl; |
| 695 | |
Herbert Xu | 36cf9ac | 2007-11-13 21:40:52 -0800 | [diff] [blame] | 696 | /* TOS for IPv4, class for IPv6. */ |
| 697 | u8 tos; |
| 698 | |
| 699 | /* TTL for IPv4, hop limitfor IPv6. */ |
| 700 | u8 ttl; |
| 701 | |
| 702 | /* Protocol for IPv4, NH for IPv6. */ |
| 703 | u8 protocol; |
| 704 | |
Herbert Xu | 732c8bd | 2008-03-26 16:51:09 -0700 | [diff] [blame] | 705 | /* Option length for IPv4, zero for IPv6. */ |
| 706 | u8 optlen; |
| 707 | |
Herbert Xu | 36cf9ac | 2007-11-13 21:40:52 -0800 | [diff] [blame] | 708 | /* Used by IPv6 only, zero for IPv4. */ |
| 709 | u8 flow_lbl[3]; |
| 710 | }; |
| 711 | |
| 712 | #define XFRM_MODE_SKB_CB(__skb) ((struct xfrm_mode_skb_cb *)&((__skb)->cb[0])) |
| 713 | |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 714 | /* |
| 715 | * This structure is used by the input processing to locate the SPI and |
| 716 | * related information. |
| 717 | */ |
| 718 | struct xfrm_spi_skb_cb { |
Steffen Klassert | 70be6c9 | 2014-02-21 08:41:09 +0100 | [diff] [blame] | 719 | struct xfrm_tunnel_skb_cb header; |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 720 | |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 721 | unsigned int daddroff; |
Herbert Xu | 2fcb45b | 2007-12-03 22:54:12 -0800 | [diff] [blame] | 722 | unsigned int family; |
Steffen Klassert | 7785bba | 2017-02-15 09:40:00 +0100 | [diff] [blame] | 723 | __be32 seq; |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 724 | }; |
| 725 | |
| 726 | #define XFRM_SPI_SKB_CB(__skb) ((struct xfrm_spi_skb_cb *)&((__skb)->cb[0])) |
| 727 | |
Joy Latten | c9204d9 | 2006-11-30 15:50:43 -0600 | [diff] [blame] | 728 | #ifdef CONFIG_AUDITSYSCALL |
Paul Moore | afeb14b | 2007-12-21 14:58:11 -0800 | [diff] [blame] | 729 | static inline struct audit_buffer *xfrm_audit_start(const char *op) |
Joy Latten | ab5f5e8 | 2007-09-17 11:51:22 -0700 | [diff] [blame] | 730 | { |
| 731 | struct audit_buffer *audit_buf = NULL; |
Paul Moore | afeb14b | 2007-12-21 14:58:11 -0800 | [diff] [blame] | 732 | |
| 733 | if (audit_enabled == 0) |
| 734 | return NULL; |
| 735 | audit_buf = audit_log_start(current->audit_context, GFP_ATOMIC, |
| 736 | AUDIT_MAC_IPSEC_EVENT); |
| 737 | if (audit_buf == NULL) |
| 738 | return NULL; |
| 739 | audit_log_format(audit_buf, "op=%s", op); |
| 740 | return audit_buf; |
| 741 | } |
| 742 | |
Tetsuo Handa | 2e71029 | 2014-04-22 21:48:30 +0900 | [diff] [blame] | 743 | static inline void xfrm_audit_helper_usrinfo(bool task_valid, |
Paul Moore | afeb14b | 2007-12-21 14:58:11 -0800 | [diff] [blame] | 744 | struct audit_buffer *audit_buf) |
| 745 | { |
Tetsuo Handa | 2e71029 | 2014-04-22 21:48:30 +0900 | [diff] [blame] | 746 | const unsigned int auid = from_kuid(&init_user_ns, task_valid ? |
| 747 | audit_get_loginuid(current) : |
| 748 | INVALID_UID); |
| 749 | const unsigned int ses = task_valid ? audit_get_sessionid(current) : |
| 750 | (unsigned int) -1; |
| 751 | |
| 752 | audit_log_format(audit_buf, " auid=%u ses=%u", auid, ses); |
Tetsuo Handa | f1370cc | 2014-04-18 16:23:46 +0900 | [diff] [blame] | 753 | audit_log_task_context(audit_buf); |
Joy Latten | ab5f5e8 | 2007-09-17 11:51:22 -0700 | [diff] [blame] | 754 | } |
| 755 | |
Tetsuo Handa | 2e71029 | 2014-04-22 21:48:30 +0900 | [diff] [blame] | 756 | void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, bool task_valid); |
| 757 | void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result, |
| 758 | bool task_valid); |
| 759 | void xfrm_audit_state_add(struct xfrm_state *x, int result, bool task_valid); |
| 760 | void xfrm_audit_state_delete(struct xfrm_state *x, int result, bool task_valid); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 761 | void xfrm_audit_state_replay_overflow(struct xfrm_state *x, |
| 762 | struct sk_buff *skb); |
| 763 | void xfrm_audit_state_replay(struct xfrm_state *x, struct sk_buff *skb, |
| 764 | __be32 net_seq); |
| 765 | void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family); |
| 766 | void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, __be32 net_spi, |
| 767 | __be32 net_seq); |
| 768 | void xfrm_audit_state_icvfail(struct xfrm_state *x, struct sk_buff *skb, |
| 769 | u8 proto); |
Joy Latten | c9204d9 | 2006-11-30 15:50:43 -0600 | [diff] [blame] | 770 | #else |
Marcin Slusarz | 41fef0e | 2008-05-03 21:03:01 -0700 | [diff] [blame] | 771 | |
| 772 | static inline void xfrm_audit_policy_add(struct xfrm_policy *xp, int result, |
Tetsuo Handa | 2e71029 | 2014-04-22 21:48:30 +0900 | [diff] [blame] | 773 | bool task_valid) |
Marcin Slusarz | 41fef0e | 2008-05-03 21:03:01 -0700 | [diff] [blame] | 774 | { |
| 775 | } |
| 776 | |
| 777 | static inline void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result, |
Tetsuo Handa | 2e71029 | 2014-04-22 21:48:30 +0900 | [diff] [blame] | 778 | bool task_valid) |
Marcin Slusarz | 41fef0e | 2008-05-03 21:03:01 -0700 | [diff] [blame] | 779 | { |
| 780 | } |
| 781 | |
| 782 | static inline void xfrm_audit_state_add(struct xfrm_state *x, int result, |
Tetsuo Handa | 2e71029 | 2014-04-22 21:48:30 +0900 | [diff] [blame] | 783 | bool task_valid) |
Marcin Slusarz | 41fef0e | 2008-05-03 21:03:01 -0700 | [diff] [blame] | 784 | { |
| 785 | } |
| 786 | |
| 787 | static inline void xfrm_audit_state_delete(struct xfrm_state *x, int result, |
Tetsuo Handa | 2e71029 | 2014-04-22 21:48:30 +0900 | [diff] [blame] | 788 | bool task_valid) |
Marcin Slusarz | 41fef0e | 2008-05-03 21:03:01 -0700 | [diff] [blame] | 789 | { |
| 790 | } |
| 791 | |
| 792 | static inline void xfrm_audit_state_replay_overflow(struct xfrm_state *x, |
| 793 | struct sk_buff *skb) |
| 794 | { |
| 795 | } |
| 796 | |
Steffen Klassert | 9fdc488 | 2011-03-08 00:08:32 +0000 | [diff] [blame] | 797 | static inline void xfrm_audit_state_replay(struct xfrm_state *x, |
| 798 | struct sk_buff *skb, __be32 net_seq) |
| 799 | { |
| 800 | } |
| 801 | |
Marcin Slusarz | 41fef0e | 2008-05-03 21:03:01 -0700 | [diff] [blame] | 802 | static inline void xfrm_audit_state_notfound_simple(struct sk_buff *skb, |
| 803 | u16 family) |
| 804 | { |
| 805 | } |
| 806 | |
| 807 | static inline void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, |
| 808 | __be32 net_spi, __be32 net_seq) |
| 809 | { |
| 810 | } |
| 811 | |
| 812 | static inline void xfrm_audit_state_icvfail(struct xfrm_state *x, |
| 813 | struct sk_buff *skb, u8 proto) |
| 814 | { |
| 815 | } |
Joy Latten | c9204d9 | 2006-11-30 15:50:43 -0600 | [diff] [blame] | 816 | #endif /* CONFIG_AUDITSYSCALL */ |
Joy Latten | 161a09e | 2006-11-27 13:11:54 -0600 | [diff] [blame] | 817 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | static inline void xfrm_pol_hold(struct xfrm_policy *policy) |
| 819 | { |
| 820 | if (likely(policy != NULL)) |
Reshetova, Elena | 850a621 | 2017-07-04 15:53:22 +0300 | [diff] [blame] | 821 | refcount_inc(&policy->refcnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | } |
| 823 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 824 | void xfrm_policy_destroy(struct xfrm_policy *policy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | |
| 826 | static inline void xfrm_pol_put(struct xfrm_policy *policy) |
| 827 | { |
Reshetova, Elena | 850a621 | 2017-07-04 15:53:22 +0300 | [diff] [blame] | 828 | if (refcount_dec_and_test(&policy->refcnt)) |
WANG Cong | 64c31b3 | 2008-01-07 22:34:29 -0800 | [diff] [blame] | 829 | xfrm_policy_destroy(policy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | } |
| 831 | |
Masahide NAKAMURA | 4e81bb8 | 2006-08-23 22:43:30 -0700 | [diff] [blame] | 832 | static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols) |
| 833 | { |
| 834 | int i; |
| 835 | for (i = npols - 1; i >= 0; --i) |
| 836 | xfrm_pol_put(pols[i]); |
| 837 | } |
Masahide NAKAMURA | 4e81bb8 | 2006-08-23 22:43:30 -0700 | [diff] [blame] | 838 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 839 | void __xfrm_state_destroy(struct xfrm_state *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | |
Herbert Xu | 21380b8 | 2006-02-22 14:47:13 -0800 | [diff] [blame] | 841 | static inline void __xfrm_state_put(struct xfrm_state *x) |
| 842 | { |
Reshetova, Elena | 88755e9 | 2017-07-04 15:53:21 +0300 | [diff] [blame] | 843 | refcount_dec(&x->refcnt); |
Herbert Xu | 21380b8 | 2006-02-22 14:47:13 -0800 | [diff] [blame] | 844 | } |
| 845 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | static inline void xfrm_state_put(struct xfrm_state *x) |
| 847 | { |
Reshetova, Elena | 88755e9 | 2017-07-04 15:53:21 +0300 | [diff] [blame] | 848 | if (refcount_dec_and_test(&x->refcnt)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | __xfrm_state_destroy(x); |
| 850 | } |
| 851 | |
| 852 | static inline void xfrm_state_hold(struct xfrm_state *x) |
| 853 | { |
Reshetova, Elena | 88755e9 | 2017-07-04 15:53:21 +0300 | [diff] [blame] | 854 | refcount_inc(&x->refcnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | } |
| 856 | |
David S. Miller | 1744a8f | 2011-02-22 18:02:12 -0800 | [diff] [blame] | 857 | static inline bool addr_match(const void *token1, const void *token2, |
Alexey Dobriyan | e1b0048 | 2017-03-24 02:07:50 +0300 | [diff] [blame] | 858 | unsigned int prefixlen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | { |
David S. Miller | 1744a8f | 2011-02-22 18:02:12 -0800 | [diff] [blame] | 860 | const __be32 *a1 = token1; |
| 861 | const __be32 *a2 = token2; |
Alexey Dobriyan | e1b0048 | 2017-03-24 02:07:50 +0300 | [diff] [blame] | 862 | unsigned int pdw; |
| 863 | unsigned int pbi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | |
jamal | a633746 | 2010-02-09 13:21:17 +0000 | [diff] [blame] | 865 | pdw = prefixlen >> 5; /* num of whole u32 in prefix */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | pbi = prefixlen & 0x1f; /* num of bits in incomplete u32 in prefix */ |
| 867 | |
| 868 | if (pdw) |
| 869 | if (memcmp(a1, a2, pdw << 2)) |
David S. Miller | 1744a8f | 2011-02-22 18:02:12 -0800 | [diff] [blame] | 870 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
| 872 | if (pbi) { |
Al Viro | 5f19343 | 2006-09-27 18:46:32 -0700 | [diff] [blame] | 873 | __be32 mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | |
| 875 | mask = htonl((0xffffffff) << (32 - pbi)); |
| 876 | |
| 877 | if ((a1[pdw] ^ a2[pdw]) & mask) |
David S. Miller | 1744a8f | 2011-02-22 18:02:12 -0800 | [diff] [blame] | 878 | return false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | } |
| 880 | |
David S. Miller | 1744a8f | 2011-02-22 18:02:12 -0800 | [diff] [blame] | 881 | return true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | } |
| 883 | |
Alexey Dobriyan | 26bff94 | 2011-11-22 06:46:02 +0000 | [diff] [blame] | 884 | static inline bool addr4_match(__be32 a1, __be32 a2, u8 prefixlen) |
| 885 | { |
| 886 | /* C99 6.5.7 (3): u32 << 32 is undefined behaviour */ |
Alexey Dobriyan | 6c786bc | 2017-03-25 19:41:17 +0300 | [diff] [blame] | 887 | if (sizeof(long) == 4 && prefixlen == 0) |
Alexey Dobriyan | 26bff94 | 2011-11-22 06:46:02 +0000 | [diff] [blame] | 888 | return true; |
Alexey Dobriyan | 6c786bc | 2017-03-25 19:41:17 +0300 | [diff] [blame] | 889 | return !((a1 ^ a2) & htonl(~0UL << (32 - prefixlen))); |
Alexey Dobriyan | 26bff94 | 2011-11-22 06:46:02 +0000 | [diff] [blame] | 890 | } |
| 891 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | static __inline__ |
David S. Miller | 6281dcc | 2011-03-12 00:43:55 -0500 | [diff] [blame] | 893 | __be16 xfrm_flowi_sport(const struct flowi *fl, const union flowi_uli *uli) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | { |
Al Viro | f9d07e41f8 | 2006-09-27 18:45:50 -0700 | [diff] [blame] | 895 | __be16 port; |
David S. Miller | 1d28f42 | 2011-03-12 00:29:39 -0500 | [diff] [blame] | 896 | switch(fl->flowi_proto) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | case IPPROTO_TCP: |
| 898 | case IPPROTO_UDP: |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 899 | case IPPROTO_UDPLITE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | case IPPROTO_SCTP: |
David S. Miller | 6281dcc | 2011-03-12 00:43:55 -0500 | [diff] [blame] | 901 | port = uli->ports.sport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | break; |
| 903 | case IPPROTO_ICMP: |
| 904 | case IPPROTO_ICMPV6: |
David S. Miller | 6281dcc | 2011-03-12 00:43:55 -0500 | [diff] [blame] | 905 | port = htons(uli->icmpt.type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | break; |
Masahide NAKAMURA | 2ce4272 | 2006-08-23 20:39:03 -0700 | [diff] [blame] | 907 | case IPPROTO_MH: |
David S. Miller | 6281dcc | 2011-03-12 00:43:55 -0500 | [diff] [blame] | 908 | port = htons(uli->mht.type); |
Masahide NAKAMURA | 2ce4272 | 2006-08-23 20:39:03 -0700 | [diff] [blame] | 909 | break; |
Timo Teräs | cc9ff19 | 2010-11-03 04:41:38 +0000 | [diff] [blame] | 910 | case IPPROTO_GRE: |
David S. Miller | 6281dcc | 2011-03-12 00:43:55 -0500 | [diff] [blame] | 911 | port = htons(ntohl(uli->gre_key) >> 16); |
Timo Teräs | cc9ff19 | 2010-11-03 04:41:38 +0000 | [diff] [blame] | 912 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | default: |
| 914 | port = 0; /*XXX*/ |
| 915 | } |
| 916 | return port; |
| 917 | } |
| 918 | |
| 919 | static __inline__ |
David S. Miller | 6281dcc | 2011-03-12 00:43:55 -0500 | [diff] [blame] | 920 | __be16 xfrm_flowi_dport(const struct flowi *fl, const union flowi_uli *uli) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | { |
Al Viro | f9d07e41f8 | 2006-09-27 18:45:50 -0700 | [diff] [blame] | 922 | __be16 port; |
David S. Miller | 1d28f42 | 2011-03-12 00:29:39 -0500 | [diff] [blame] | 923 | switch(fl->flowi_proto) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | case IPPROTO_TCP: |
| 925 | case IPPROTO_UDP: |
Gerrit Renker | ba4e58e | 2006-11-27 11:10:57 -0800 | [diff] [blame] | 926 | case IPPROTO_UDPLITE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | case IPPROTO_SCTP: |
David S. Miller | 6281dcc | 2011-03-12 00:43:55 -0500 | [diff] [blame] | 928 | port = uli->ports.dport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | break; |
| 930 | case IPPROTO_ICMP: |
| 931 | case IPPROTO_ICMPV6: |
David S. Miller | 6281dcc | 2011-03-12 00:43:55 -0500 | [diff] [blame] | 932 | port = htons(uli->icmpt.code); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | break; |
Timo Teräs | cc9ff19 | 2010-11-03 04:41:38 +0000 | [diff] [blame] | 934 | case IPPROTO_GRE: |
David S. Miller | 6281dcc | 2011-03-12 00:43:55 -0500 | [diff] [blame] | 935 | port = htons(ntohl(uli->gre_key) & 0xffff); |
Timo Teräs | cc9ff19 | 2010-11-03 04:41:38 +0000 | [diff] [blame] | 936 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | default: |
| 938 | port = 0; /*XXX*/ |
| 939 | } |
| 940 | return port; |
| 941 | } |
| 942 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 943 | bool xfrm_selector_match(const struct xfrm_selector *sel, |
| 944 | const struct flowi *fl, unsigned short family); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | |
Trent Jaeger | df71837 | 2005-12-13 23:12:27 -0800 | [diff] [blame] | 946 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
| 947 | /* If neither has a context --> match |
| 948 | * Otherwise, both must have a context and the sids, doi, alg must match |
| 949 | */ |
David S. Miller | bc9b35a | 2012-05-15 15:04:57 -0400 | [diff] [blame] | 950 | static inline bool xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2) |
Trent Jaeger | df71837 | 2005-12-13 23:12:27 -0800 | [diff] [blame] | 951 | { |
| 952 | return ((!s1 && !s2) || |
| 953 | (s1 && s2 && |
| 954 | (s1->ctx_sid == s2->ctx_sid) && |
| 955 | (s1->ctx_doi == s2->ctx_doi) && |
| 956 | (s1->ctx_alg == s2->ctx_alg))); |
| 957 | } |
| 958 | #else |
David S. Miller | bc9b35a | 2012-05-15 15:04:57 -0400 | [diff] [blame] | 959 | static inline bool xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2) |
Trent Jaeger | df71837 | 2005-12-13 23:12:27 -0800 | [diff] [blame] | 960 | { |
David S. Miller | bc9b35a | 2012-05-15 15:04:57 -0400 | [diff] [blame] | 961 | return true; |
Trent Jaeger | df71837 | 2005-12-13 23:12:27 -0800 | [diff] [blame] | 962 | } |
| 963 | #endif |
| 964 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | /* A struct encoding bundle of transformations to apply to some set of flow. |
| 966 | * |
| 967 | * dst->child points to the next element of bundle. |
| 968 | * dst->xfrm points to an instanse of transformer. |
| 969 | * |
| 970 | * Due to unfortunate limitations of current routing cache, which we |
| 971 | * have no time to fix, it mirrors struct rtable and bound to the same |
| 972 | * routing key, including saddr,daddr. However, we can have many of |
| 973 | * bundles differing by session id. All the bundles grow from a parent |
| 974 | * policy rule. |
| 975 | */ |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 976 | struct xfrm_dst { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | union { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | struct dst_entry dst; |
| 979 | struct rtable rt; |
| 980 | struct rt6_info rt6; |
| 981 | } u; |
| 982 | struct dst_entry *route; |
Timo Teräs | 80c802f | 2010-04-07 00:30:05 +0000 | [diff] [blame] | 983 | struct xfrm_policy *pols[XFRM_POLICY_TYPE_MAX]; |
| 984 | int num_pols, num_xfrms; |
Timo Teräs | 80c802f | 2010-04-07 00:30:05 +0000 | [diff] [blame] | 985 | u32 xfrm_genid; |
| 986 | u32 policy_genid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | u32 route_mtu_cached; |
| 988 | u32 child_mtu_cached; |
Hideaki YOSHIFUJI | 92d63de | 2005-05-26 12:58:04 -0700 | [diff] [blame] | 989 | u32 route_cookie; |
| 990 | u32 path_cookie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | }; |
| 992 | |
Alexey Dobriyan | def8b4f | 2008-10-28 13:24:06 -0700 | [diff] [blame] | 993 | #ifdef CONFIG_XFRM |
Herbert Xu | aabc976 | 2005-05-03 16:27:10 -0700 | [diff] [blame] | 994 | static inline void xfrm_dst_destroy(struct xfrm_dst *xdst) |
| 995 | { |
Timo Teräs | 80c802f | 2010-04-07 00:30:05 +0000 | [diff] [blame] | 996 | xfrm_pols_put(xdst->pols, xdst->num_pols); |
Herbert Xu | aabc976 | 2005-05-03 16:27:10 -0700 | [diff] [blame] | 997 | dst_release(xdst->route); |
| 998 | if (likely(xdst->u.dst.xfrm)) |
| 999 | xfrm_state_put(xdst->u.dst.xfrm); |
| 1000 | } |
Alexey Dobriyan | def8b4f | 2008-10-28 13:24:06 -0700 | [diff] [blame] | 1001 | #endif |
Herbert Xu | aabc976 | 2005-05-03 16:27:10 -0700 | [diff] [blame] | 1002 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1003 | void xfrm_dst_ifdown(struct dst_entry *dst, struct net_device *dev); |
Herbert Xu | aabc976 | 2005-05-03 16:27:10 -0700 | [diff] [blame] | 1004 | |
Steffen Klassert | 54ef207 | 2017-02-15 09:39:54 +0100 | [diff] [blame] | 1005 | struct xfrm_offload { |
| 1006 | /* Output sequence number for replay protection on offloading. */ |
| 1007 | struct { |
| 1008 | __u32 low; |
| 1009 | __u32 hi; |
| 1010 | } seq; |
| 1011 | |
| 1012 | __u32 flags; |
| 1013 | #define SA_DELETE_REQ 1 |
| 1014 | #define CRYPTO_DONE 2 |
| 1015 | #define CRYPTO_NEXT_DONE 4 |
| 1016 | #define CRYPTO_FALLBACK 8 |
| 1017 | #define XFRM_GSO_SEGMENT 16 |
| 1018 | #define XFRM_GRO 32 |
| 1019 | |
| 1020 | __u32 status; |
| 1021 | #define CRYPTO_SUCCESS 1 |
| 1022 | #define CRYPTO_GENERIC_ERROR 2 |
| 1023 | #define CRYPTO_TRANSPORT_AH_AUTH_FAILED 4 |
| 1024 | #define CRYPTO_TRANSPORT_ESP_AUTH_FAILED 8 |
| 1025 | #define CRYPTO_TUNNEL_AH_AUTH_FAILED 16 |
| 1026 | #define CRYPTO_TUNNEL_ESP_AUTH_FAILED 32 |
| 1027 | #define CRYPTO_INVALID_PACKET_SYNTAX 64 |
| 1028 | #define CRYPTO_INVALID_PROTOCOL 128 |
| 1029 | |
| 1030 | __u8 proto; |
| 1031 | }; |
| 1032 | |
Eric Dumazet | fd2c3ef | 2009-11-03 03:26:03 +0000 | [diff] [blame] | 1033 | struct sec_path { |
Reshetova, Elena | 55eabed | 2017-07-04 15:53:23 +0300 | [diff] [blame] | 1034 | refcount_t refcnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | int len; |
Steffen Klassert | 54ef207 | 2017-02-15 09:39:54 +0100 | [diff] [blame] | 1036 | int olen; |
| 1037 | |
Herbert Xu | dbe5b4a | 2006-04-01 00:54:16 -0800 | [diff] [blame] | 1038 | struct xfrm_state *xvec[XFRM_MAX_DEPTH]; |
Steffen Klassert | 54ef207 | 2017-02-15 09:39:54 +0100 | [diff] [blame] | 1039 | struct xfrm_offload ovec[XFRM_MAX_OFFLOAD_DEPTH]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | }; |
| 1041 | |
Michael Smith | 990078a | 2011-04-07 04:51:51 +0000 | [diff] [blame] | 1042 | static inline int secpath_exists(struct sk_buff *skb) |
| 1043 | { |
| 1044 | #ifdef CONFIG_XFRM |
| 1045 | return skb->sp != NULL; |
| 1046 | #else |
| 1047 | return 0; |
| 1048 | #endif |
| 1049 | } |
| 1050 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | static inline struct sec_path * |
| 1052 | secpath_get(struct sec_path *sp) |
| 1053 | { |
| 1054 | if (sp) |
Reshetova, Elena | 55eabed | 2017-07-04 15:53:23 +0300 | [diff] [blame] | 1055 | refcount_inc(&sp->refcnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | return sp; |
| 1057 | } |
| 1058 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1059 | void __secpath_destroy(struct sec_path *sp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | |
| 1061 | static inline void |
| 1062 | secpath_put(struct sec_path *sp) |
| 1063 | { |
Reshetova, Elena | 55eabed | 2017-07-04 15:53:23 +0300 | [diff] [blame] | 1064 | if (sp && refcount_dec_and_test(&sp->refcnt)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | __secpath_destroy(sp); |
| 1066 | } |
| 1067 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1068 | struct sec_path *secpath_dup(struct sec_path *src); |
Steffen Klassert | b0fcee8 | 2017-02-15 09:39:24 +0100 | [diff] [blame] | 1069 | int secpath_set(struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | |
| 1071 | static inline void |
| 1072 | secpath_reset(struct sk_buff *skb) |
| 1073 | { |
| 1074 | #ifdef CONFIG_XFRM |
| 1075 | secpath_put(skb->sp); |
| 1076 | skb->sp = NULL; |
| 1077 | #endif |
| 1078 | } |
| 1079 | |
| 1080 | static inline int |
David S. Miller | 6cc3296 | 2011-02-24 00:19:59 -0500 | [diff] [blame] | 1081 | xfrm_addr_any(const xfrm_address_t *addr, unsigned short family) |
Patrick McHardy | a1e59ab | 2006-09-19 12:57:34 -0700 | [diff] [blame] | 1082 | { |
| 1083 | switch (family) { |
| 1084 | case AF_INET: |
| 1085 | return addr->a4 == 0; |
| 1086 | case AF_INET6: |
Jiri Benc | 15e318b | 2015-03-29 16:59:24 +0200 | [diff] [blame] | 1087 | return ipv6_addr_any(&addr->in6); |
Patrick McHardy | a1e59ab | 2006-09-19 12:57:34 -0700 | [diff] [blame] | 1088 | } |
| 1089 | return 0; |
| 1090 | } |
| 1091 | |
| 1092 | static inline int |
David S. Miller | 21eddb5 | 2011-02-24 01:35:16 -0500 | [diff] [blame] | 1093 | __xfrm4_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | { |
| 1095 | return (tmpl->saddr.a4 && |
| 1096 | tmpl->saddr.a4 != x->props.saddr.a4); |
| 1097 | } |
| 1098 | |
| 1099 | static inline int |
David S. Miller | 21eddb5 | 2011-02-24 01:35:16 -0500 | [diff] [blame] | 1100 | __xfrm6_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | { |
| 1102 | return (!ipv6_addr_any((struct in6_addr*)&tmpl->saddr) && |
YOSHIFUJI Hideaki / 吉藤英明 | ff88b30 | 2013-01-29 12:48:31 +0000 | [diff] [blame] | 1103 | !ipv6_addr_equal((struct in6_addr *)&tmpl->saddr, (struct in6_addr*)&x->props.saddr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | } |
| 1105 | |
| 1106 | static inline int |
David S. Miller | 21eddb5 | 2011-02-24 01:35:16 -0500 | [diff] [blame] | 1107 | xfrm_state_addr_cmp(const struct xfrm_tmpl *tmpl, const struct xfrm_state *x, unsigned short family) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | { |
| 1109 | switch (family) { |
| 1110 | case AF_INET: |
| 1111 | return __xfrm4_state_addr_cmp(tmpl, x); |
| 1112 | case AF_INET6: |
| 1113 | return __xfrm6_state_addr_cmp(tmpl, x); |
| 1114 | } |
| 1115 | return !0; |
| 1116 | } |
| 1117 | |
| 1118 | #ifdef CONFIG_XFRM |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1119 | int __xfrm_policy_check(struct sock *, int dir, struct sk_buff *skb, |
| 1120 | unsigned short family); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | |
Herbert Xu | d5422ef | 2007-12-12 10:44:16 -0800 | [diff] [blame] | 1122 | static inline int __xfrm_policy_check2(struct sock *sk, int dir, |
| 1123 | struct sk_buff *skb, |
| 1124 | unsigned int family, int reverse) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | { |
Alexey Dobriyan | f6e1e25 | 2008-11-25 17:35:44 -0800 | [diff] [blame] | 1126 | struct net *net = dev_net(skb->dev); |
Herbert Xu | d5422ef | 2007-12-12 10:44:16 -0800 | [diff] [blame] | 1127 | int ndir = dir | (reverse ? XFRM_POLICY_MASK + 1 : 0); |
| 1128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | if (sk && sk->sk_policy[XFRM_POLICY_IN]) |
Herbert Xu | d5422ef | 2007-12-12 10:44:16 -0800 | [diff] [blame] | 1130 | return __xfrm_policy_check(sk, ndir, skb, family); |
Masahide NAKAMURA | 4e81bb8 | 2006-08-23 22:43:30 -0700 | [diff] [blame] | 1131 | |
Alexey Dobriyan | f6e1e25 | 2008-11-25 17:35:44 -0800 | [diff] [blame] | 1132 | return (!net->xfrm.policy_count[dir] && !skb->sp) || |
Eric Dumazet | adf3090 | 2009-06-02 05:19:30 +0000 | [diff] [blame] | 1133 | (skb_dst(skb)->flags & DST_NOPOLICY) || |
Herbert Xu | d5422ef | 2007-12-12 10:44:16 -0800 | [diff] [blame] | 1134 | __xfrm_policy_check(sk, ndir, skb, family); |
| 1135 | } |
| 1136 | |
| 1137 | static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) |
| 1138 | { |
| 1139 | return __xfrm_policy_check2(sk, dir, skb, family, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | } |
| 1141 | |
| 1142 | static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) |
| 1143 | { |
| 1144 | return xfrm_policy_check(sk, dir, skb, AF_INET); |
| 1145 | } |
| 1146 | |
| 1147 | static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) |
| 1148 | { |
| 1149 | return xfrm_policy_check(sk, dir, skb, AF_INET6); |
| 1150 | } |
| 1151 | |
Herbert Xu | d5422ef | 2007-12-12 10:44:16 -0800 | [diff] [blame] | 1152 | static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir, |
| 1153 | struct sk_buff *skb) |
| 1154 | { |
| 1155 | return __xfrm_policy_check2(sk, dir, skb, AF_INET, 1); |
| 1156 | } |
| 1157 | |
| 1158 | static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, |
| 1159 | struct sk_buff *skb) |
| 1160 | { |
| 1161 | return __xfrm_policy_check2(sk, dir, skb, AF_INET6, 1); |
| 1162 | } |
| 1163 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1164 | int __xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, |
| 1165 | unsigned int family, int reverse); |
Herbert Xu | d5422ef | 2007-12-12 10:44:16 -0800 | [diff] [blame] | 1166 | |
| 1167 | static inline int xfrm_decode_session(struct sk_buff *skb, struct flowi *fl, |
| 1168 | unsigned int family) |
| 1169 | { |
| 1170 | return __xfrm_decode_session(skb, fl, family, 0); |
| 1171 | } |
| 1172 | |
| 1173 | static inline int xfrm_decode_session_reverse(struct sk_buff *skb, |
| 1174 | struct flowi *fl, |
| 1175 | unsigned int family) |
| 1176 | { |
| 1177 | return __xfrm_decode_session(skb, fl, family, 1); |
| 1178 | } |
| 1179 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1180 | int __xfrm_route_forward(struct sk_buff *skb, unsigned short family); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | |
| 1182 | static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family) |
| 1183 | { |
Alexey Dobriyan | 99a6665 | 2008-11-25 17:36:13 -0800 | [diff] [blame] | 1184 | struct net *net = dev_net(skb->dev); |
| 1185 | |
| 1186 | return !net->xfrm.policy_count[XFRM_POLICY_OUT] || |
Eric Dumazet | adf3090 | 2009-06-02 05:19:30 +0000 | [diff] [blame] | 1187 | (skb_dst(skb)->flags & DST_NOXFRM) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | __xfrm_route_forward(skb, family); |
| 1189 | } |
| 1190 | |
| 1191 | static inline int xfrm4_route_forward(struct sk_buff *skb) |
| 1192 | { |
| 1193 | return xfrm_route_forward(skb, AF_INET); |
| 1194 | } |
| 1195 | |
| 1196 | static inline int xfrm6_route_forward(struct sk_buff *skb) |
| 1197 | { |
| 1198 | return xfrm_route_forward(skb, AF_INET6); |
| 1199 | } |
| 1200 | |
Eric Dumazet | d188ba8 | 2015-12-08 07:22:02 -0800 | [diff] [blame] | 1201 | int __xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | |
Eric Dumazet | d188ba8 | 2015-12-08 07:22:02 -0800 | [diff] [blame] | 1203 | static inline int xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | { |
Eric Dumazet | d188ba8 | 2015-12-08 07:22:02 -0800 | [diff] [blame] | 1205 | sk->sk_policy[0] = NULL; |
| 1206 | sk->sk_policy[1] = NULL; |
| 1207 | if (unlikely(osk->sk_policy[0] || osk->sk_policy[1])) |
| 1208 | return __xfrm_sk_clone_policy(sk, osk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | return 0; |
| 1210 | } |
| 1211 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1212 | int xfrm_policy_delete(struct xfrm_policy *pol, int dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | |
| 1214 | static inline void xfrm_sk_free_policy(struct sock *sk) |
| 1215 | { |
Eric Dumazet | d188ba8 | 2015-12-08 07:22:02 -0800 | [diff] [blame] | 1216 | struct xfrm_policy *pol; |
| 1217 | |
| 1218 | pol = rcu_dereference_protected(sk->sk_policy[0], 1); |
| 1219 | if (unlikely(pol != NULL)) { |
| 1220 | xfrm_policy_delete(pol, XFRM_POLICY_MAX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | sk->sk_policy[0] = NULL; |
| 1222 | } |
Eric Dumazet | d188ba8 | 2015-12-08 07:22:02 -0800 | [diff] [blame] | 1223 | pol = rcu_dereference_protected(sk->sk_policy[1], 1); |
| 1224 | if (unlikely(pol != NULL)) { |
| 1225 | xfrm_policy_delete(pol, XFRM_POLICY_MAX+1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | sk->sk_policy[1] = NULL; |
| 1227 | } |
| 1228 | } |
| 1229 | |
| 1230 | #else |
| 1231 | |
| 1232 | static inline void xfrm_sk_free_policy(struct sock *sk) {} |
Eric Dumazet | d188ba8 | 2015-12-08 07:22:02 -0800 | [diff] [blame] | 1233 | static inline int xfrm_sk_clone_policy(struct sock *sk, const struct sock *osk) { return 0; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | static inline int xfrm6_route_forward(struct sk_buff *skb) { return 1; } |
| 1235 | static inline int xfrm4_route_forward(struct sk_buff *skb) { return 1; } |
| 1236 | static inline int xfrm6_policy_check(struct sock *sk, int dir, struct sk_buff *skb) |
| 1237 | { |
| 1238 | return 1; |
| 1239 | } |
| 1240 | static inline int xfrm4_policy_check(struct sock *sk, int dir, struct sk_buff *skb) |
| 1241 | { |
| 1242 | return 1; |
| 1243 | } |
| 1244 | static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb, unsigned short family) |
| 1245 | { |
| 1246 | return 1; |
| 1247 | } |
Herbert Xu | d5422ef | 2007-12-12 10:44:16 -0800 | [diff] [blame] | 1248 | static inline int xfrm_decode_session_reverse(struct sk_buff *skb, |
| 1249 | struct flowi *fl, |
| 1250 | unsigned int family) |
| 1251 | { |
| 1252 | return -ENOSYS; |
| 1253 | } |
| 1254 | static inline int xfrm4_policy_check_reverse(struct sock *sk, int dir, |
| 1255 | struct sk_buff *skb) |
| 1256 | { |
| 1257 | return 1; |
| 1258 | } |
| 1259 | static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, |
| 1260 | struct sk_buff *skb) |
| 1261 | { |
| 1262 | return 1; |
| 1263 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1264 | #endif |
| 1265 | |
| 1266 | static __inline__ |
David S. Miller | e8a4e37 | 2011-02-22 17:42:56 -0800 | [diff] [blame] | 1267 | xfrm_address_t *xfrm_flowi_daddr(const struct flowi *fl, unsigned short family) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | { |
| 1269 | switch (family){ |
| 1270 | case AF_INET: |
David S. Miller | 7e1dc7b | 2011-03-12 02:42:11 -0500 | [diff] [blame] | 1271 | return (xfrm_address_t *)&fl->u.ip4.daddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | case AF_INET6: |
David S. Miller | 7e1dc7b | 2011-03-12 02:42:11 -0500 | [diff] [blame] | 1273 | return (xfrm_address_t *)&fl->u.ip6.daddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | } |
| 1275 | return NULL; |
| 1276 | } |
| 1277 | |
| 1278 | static __inline__ |
David S. Miller | e8a4e37 | 2011-02-22 17:42:56 -0800 | [diff] [blame] | 1279 | xfrm_address_t *xfrm_flowi_saddr(const struct flowi *fl, unsigned short family) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | { |
| 1281 | switch (family){ |
| 1282 | case AF_INET: |
David S. Miller | 7e1dc7b | 2011-03-12 02:42:11 -0500 | [diff] [blame] | 1283 | return (xfrm_address_t *)&fl->u.ip4.saddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | case AF_INET6: |
David S. Miller | 7e1dc7b | 2011-03-12 02:42:11 -0500 | [diff] [blame] | 1285 | return (xfrm_address_t *)&fl->u.ip6.saddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | } |
| 1287 | return NULL; |
| 1288 | } |
| 1289 | |
YOSHIFUJI Hideaki | 9bb182a | 2008-02-22 14:48:22 +0900 | [diff] [blame] | 1290 | static __inline__ |
David S. Miller | e8a4e37 | 2011-02-22 17:42:56 -0800 | [diff] [blame] | 1291 | void xfrm_flowi_addr_get(const struct flowi *fl, |
YOSHIFUJI Hideaki | 9bb182a | 2008-02-22 14:48:22 +0900 | [diff] [blame] | 1292 | xfrm_address_t *saddr, xfrm_address_t *daddr, |
| 1293 | unsigned short family) |
| 1294 | { |
| 1295 | switch(family) { |
| 1296 | case AF_INET: |
David S. Miller | 7e1dc7b | 2011-03-12 02:42:11 -0500 | [diff] [blame] | 1297 | memcpy(&saddr->a4, &fl->u.ip4.saddr, sizeof(saddr->a4)); |
| 1298 | memcpy(&daddr->a4, &fl->u.ip4.daddr, sizeof(daddr->a4)); |
YOSHIFUJI Hideaki | 9bb182a | 2008-02-22 14:48:22 +0900 | [diff] [blame] | 1299 | break; |
| 1300 | case AF_INET6: |
Jiri Benc | 15e318b | 2015-03-29 16:59:24 +0200 | [diff] [blame] | 1301 | saddr->in6 = fl->u.ip6.saddr; |
| 1302 | daddr->in6 = fl->u.ip6.daddr; |
YOSHIFUJI Hideaki | 9bb182a | 2008-02-22 14:48:22 +0900 | [diff] [blame] | 1303 | break; |
| 1304 | } |
| 1305 | } |
| 1306 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | static __inline__ int |
David S. Miller | f884806 | 2011-02-24 01:42:28 -0500 | [diff] [blame] | 1308 | __xfrm4_state_addr_check(const struct xfrm_state *x, |
| 1309 | const xfrm_address_t *daddr, const xfrm_address_t *saddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | { |
| 1311 | if (daddr->a4 == x->id.daddr.a4 && |
| 1312 | (saddr->a4 == x->props.saddr.a4 || !saddr->a4 || !x->props.saddr.a4)) |
| 1313 | return 1; |
| 1314 | return 0; |
| 1315 | } |
| 1316 | |
| 1317 | static __inline__ int |
David S. Miller | f884806 | 2011-02-24 01:42:28 -0500 | [diff] [blame] | 1318 | __xfrm6_state_addr_check(const struct xfrm_state *x, |
| 1319 | const xfrm_address_t *daddr, const xfrm_address_t *saddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | { |
YOSHIFUJI Hideaki / 吉藤英明 | ff88b30 | 2013-01-29 12:48:31 +0000 | [diff] [blame] | 1321 | if (ipv6_addr_equal((struct in6_addr *)daddr, (struct in6_addr *)&x->id.daddr) && |
| 1322 | (ipv6_addr_equal((struct in6_addr *)saddr, (struct in6_addr *)&x->props.saddr) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | ipv6_addr_any((struct in6_addr *)saddr) || |
| 1324 | ipv6_addr_any((struct in6_addr *)&x->props.saddr))) |
| 1325 | return 1; |
| 1326 | return 0; |
| 1327 | } |
| 1328 | |
| 1329 | static __inline__ int |
David S. Miller | f884806 | 2011-02-24 01:42:28 -0500 | [diff] [blame] | 1330 | xfrm_state_addr_check(const struct xfrm_state *x, |
| 1331 | const xfrm_address_t *daddr, const xfrm_address_t *saddr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | unsigned short family) |
| 1333 | { |
| 1334 | switch (family) { |
| 1335 | case AF_INET: |
| 1336 | return __xfrm4_state_addr_check(x, daddr, saddr); |
| 1337 | case AF_INET6: |
| 1338 | return __xfrm6_state_addr_check(x, daddr, saddr); |
| 1339 | } |
| 1340 | return 0; |
| 1341 | } |
| 1342 | |
Masahide NAKAMURA | e53820d | 2006-08-23 19:12:01 -0700 | [diff] [blame] | 1343 | static __inline__ int |
David S. Miller | f884806 | 2011-02-24 01:42:28 -0500 | [diff] [blame] | 1344 | xfrm_state_addr_flow_check(const struct xfrm_state *x, const struct flowi *fl, |
Masahide NAKAMURA | e53820d | 2006-08-23 19:12:01 -0700 | [diff] [blame] | 1345 | unsigned short family) |
| 1346 | { |
| 1347 | switch (family) { |
| 1348 | case AF_INET: |
| 1349 | return __xfrm4_state_addr_check(x, |
David S. Miller | 7e1dc7b | 2011-03-12 02:42:11 -0500 | [diff] [blame] | 1350 | (const xfrm_address_t *)&fl->u.ip4.daddr, |
| 1351 | (const xfrm_address_t *)&fl->u.ip4.saddr); |
Masahide NAKAMURA | e53820d | 2006-08-23 19:12:01 -0700 | [diff] [blame] | 1352 | case AF_INET6: |
| 1353 | return __xfrm6_state_addr_check(x, |
David S. Miller | 7e1dc7b | 2011-03-12 02:42:11 -0500 | [diff] [blame] | 1354 | (const xfrm_address_t *)&fl->u.ip6.daddr, |
| 1355 | (const xfrm_address_t *)&fl->u.ip6.saddr); |
Masahide NAKAMURA | e53820d | 2006-08-23 19:12:01 -0700 | [diff] [blame] | 1356 | } |
| 1357 | return 0; |
| 1358 | } |
| 1359 | |
David S. Miller | f884806 | 2011-02-24 01:42:28 -0500 | [diff] [blame] | 1360 | static inline int xfrm_state_kern(const struct xfrm_state *x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | { |
| 1362 | return atomic_read(&x->tunnel_users); |
| 1363 | } |
| 1364 | |
Masahide NAKAMURA | 5794708 | 2006-09-22 15:06:24 -0700 | [diff] [blame] | 1365 | static inline int xfrm_id_proto_match(u8 proto, u8 userproto) |
| 1366 | { |
Masahide NAKAMURA | dc00a52 | 2006-08-23 17:49:52 -0700 | [diff] [blame] | 1367 | return (!userproto || proto == userproto || |
| 1368 | (userproto == IPSEC_PROTO_ANY && (proto == IPPROTO_AH || |
| 1369 | proto == IPPROTO_ESP || |
| 1370 | proto == IPPROTO_COMP))); |
Masahide NAKAMURA | 5794708 | 2006-09-22 15:06:24 -0700 | [diff] [blame] | 1371 | } |
| 1372 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | /* |
| 1374 | * xfrm algorithm information |
| 1375 | */ |
Herbert Xu | 1a6509d | 2008-01-28 19:37:29 -0800 | [diff] [blame] | 1376 | struct xfrm_algo_aead_info { |
Herbert Xu | 165ecc6 | 2015-05-27 16:03:44 +0800 | [diff] [blame] | 1377 | char *geniv; |
Herbert Xu | 1a6509d | 2008-01-28 19:37:29 -0800 | [diff] [blame] | 1378 | u16 icv_truncbits; |
| 1379 | }; |
| 1380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | struct xfrm_algo_auth_info { |
| 1382 | u16 icv_truncbits; |
| 1383 | u16 icv_fullbits; |
| 1384 | }; |
| 1385 | |
| 1386 | struct xfrm_algo_encr_info { |
Herbert Xu | 165ecc6 | 2015-05-27 16:03:44 +0800 | [diff] [blame] | 1387 | char *geniv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | u16 blockbits; |
| 1389 | u16 defkeybits; |
| 1390 | }; |
| 1391 | |
| 1392 | struct xfrm_algo_comp_info { |
| 1393 | u16 threshold; |
| 1394 | }; |
| 1395 | |
| 1396 | struct xfrm_algo_desc { |
| 1397 | char *name; |
Herbert Xu | 04ff126 | 2006-08-13 08:50:00 +1000 | [diff] [blame] | 1398 | char *compat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | u8 available:1; |
Jussi Kivilinna | 7e50f84 | 2013-01-31 12:40:38 +0200 | [diff] [blame] | 1400 | u8 pfkey_supported:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | union { |
Herbert Xu | 1a6509d | 2008-01-28 19:37:29 -0800 | [diff] [blame] | 1402 | struct xfrm_algo_aead_info aead; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | struct xfrm_algo_auth_info auth; |
| 1404 | struct xfrm_algo_encr_info encr; |
| 1405 | struct xfrm_algo_comp_info comp; |
| 1406 | } uinfo; |
| 1407 | struct sadb_alg desc; |
| 1408 | }; |
| 1409 | |
Steffen Klassert | 3328715 | 2014-02-21 08:41:08 +0100 | [diff] [blame] | 1410 | /* XFRM protocol handlers. */ |
| 1411 | struct xfrm4_protocol { |
| 1412 | int (*handler)(struct sk_buff *skb); |
| 1413 | int (*input_handler)(struct sk_buff *skb, int nexthdr, __be32 spi, |
| 1414 | int encap_type); |
| 1415 | int (*cb_handler)(struct sk_buff *skb, int err); |
| 1416 | int (*err_handler)(struct sk_buff *skb, u32 info); |
| 1417 | |
| 1418 | struct xfrm4_protocol __rcu *next; |
| 1419 | int priority; |
| 1420 | }; |
| 1421 | |
Steffen Klassert | 7e14ea1 | 2014-03-14 07:28:07 +0100 | [diff] [blame] | 1422 | struct xfrm6_protocol { |
| 1423 | int (*handler)(struct sk_buff *skb); |
| 1424 | int (*cb_handler)(struct sk_buff *skb, int err); |
| 1425 | int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, |
| 1426 | u8 type, u8 code, int offset, __be32 info); |
| 1427 | |
| 1428 | struct xfrm6_protocol __rcu *next; |
| 1429 | int priority; |
| 1430 | }; |
| 1431 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | /* XFRM tunnel handlers. */ |
| 1433 | struct xfrm_tunnel { |
| 1434 | int (*handler)(struct sk_buff *skb); |
jamal | a633746 | 2010-02-09 13:21:17 +0000 | [diff] [blame] | 1435 | int (*err_handler)(struct sk_buff *skb, u32 info); |
Herbert Xu | d2acc34 | 2006-03-28 01:12:13 -0800 | [diff] [blame] | 1436 | |
Eric Dumazet | b33eab0 | 2010-10-25 21:01:26 +0000 | [diff] [blame] | 1437 | struct xfrm_tunnel __rcu *next; |
Herbert Xu | d2acc34 | 2006-03-28 01:12:13 -0800 | [diff] [blame] | 1438 | int priority; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1439 | }; |
| 1440 | |
| 1441 | struct xfrm6_tunnel { |
Herbert Xu | d2acc34 | 2006-03-28 01:12:13 -0800 | [diff] [blame] | 1442 | int (*handler)(struct sk_buff *skb); |
| 1443 | int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt, |
Brian Haley | d5fdd6b | 2009-06-23 04:31:07 -0700 | [diff] [blame] | 1444 | u8 type, u8 code, int offset, __be32 info); |
Eric Dumazet | 6f0bcf1 | 2010-10-24 21:33:16 +0000 | [diff] [blame] | 1445 | struct xfrm6_tunnel __rcu *next; |
Herbert Xu | d2acc34 | 2006-03-28 01:12:13 -0800 | [diff] [blame] | 1446 | int priority; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | }; |
| 1448 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1449 | void xfrm_init(void); |
| 1450 | void xfrm4_init(void); |
| 1451 | int xfrm_state_init(struct net *net); |
| 1452 | void xfrm_state_fini(struct net *net); |
| 1453 | void xfrm4_state_init(void); |
Steffen Klassert | 2f32b51 | 2014-03-14 07:28:07 +0100 | [diff] [blame] | 1454 | void xfrm4_protocol_init(void); |
Daniel Lezcano | c35b7e7 | 2007-12-08 00:14:11 -0800 | [diff] [blame] | 1455 | #ifdef CONFIG_XFRM |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1456 | int xfrm6_init(void); |
| 1457 | void xfrm6_fini(void); |
| 1458 | int xfrm6_state_init(void); |
| 1459 | void xfrm6_state_fini(void); |
Steffen Klassert | 7e14ea1 | 2014-03-14 07:28:07 +0100 | [diff] [blame] | 1460 | int xfrm6_protocol_init(void); |
| 1461 | void xfrm6_protocol_fini(void); |
Daniel Lezcano | c35b7e7 | 2007-12-08 00:14:11 -0800 | [diff] [blame] | 1462 | #else |
| 1463 | static inline int xfrm6_init(void) |
| 1464 | { |
| 1465 | return 0; |
| 1466 | } |
| 1467 | static inline void xfrm6_fini(void) |
| 1468 | { |
| 1469 | ; |
| 1470 | } |
| 1471 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | |
Masahide NAKAMURA | 558f82e | 2007-12-20 20:42:57 -0800 | [diff] [blame] | 1473 | #ifdef CONFIG_XFRM_STATISTICS |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1474 | int xfrm_proc_init(struct net *net); |
| 1475 | void xfrm_proc_fini(struct net *net); |
Masahide NAKAMURA | 558f82e | 2007-12-20 20:42:57 -0800 | [diff] [blame] | 1476 | #endif |
| 1477 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1478 | int xfrm_sysctl_init(struct net *net); |
Alexey Dobriyan | b27aead | 2008-11-25 18:00:48 -0800 | [diff] [blame] | 1479 | #ifdef CONFIG_SYSCTL |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1480 | void xfrm_sysctl_fini(struct net *net); |
Alexey Dobriyan | b27aead | 2008-11-25 18:00:48 -0800 | [diff] [blame] | 1481 | #else |
| 1482 | static inline void xfrm_sysctl_fini(struct net *net) |
| 1483 | { |
| 1484 | } |
| 1485 | #endif |
| 1486 | |
Nicolas Dichtel | d362309 | 2014-02-14 15:30:36 +0100 | [diff] [blame] | 1487 | void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto, |
Nicolas Dichtel | 870a2df | 2014-03-06 18:24:29 +0100 | [diff] [blame] | 1488 | struct xfrm_address_filter *filter); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1489 | int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk, |
| 1490 | int (*func)(struct xfrm_state *, int, void*), void *); |
Fan Du | 283bc9f | 2013-11-07 17:47:50 +0800 | [diff] [blame] | 1491 | void xfrm_state_walk_done(struct xfrm_state_walk *walk, struct net *net); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1492 | struct xfrm_state *xfrm_state_alloc(struct net *net); |
| 1493 | struct xfrm_state *xfrm_state_find(const xfrm_address_t *daddr, |
| 1494 | const xfrm_address_t *saddr, |
| 1495 | const struct flowi *fl, |
| 1496 | struct xfrm_tmpl *tmpl, |
| 1497 | struct xfrm_policy *pol, int *err, |
| 1498 | unsigned short family); |
| 1499 | struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark, |
| 1500 | xfrm_address_t *daddr, |
| 1501 | xfrm_address_t *saddr, |
| 1502 | unsigned short family, |
| 1503 | u8 mode, u8 proto, u32 reqid); |
Fan Du | c454997 | 2014-01-03 11:18:32 +0800 | [diff] [blame] | 1504 | struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi, |
| 1505 | unsigned short family); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1506 | int xfrm_state_check_expire(struct xfrm_state *x); |
| 1507 | void xfrm_state_insert(struct xfrm_state *x); |
| 1508 | int xfrm_state_add(struct xfrm_state *x); |
| 1509 | int xfrm_state_update(struct xfrm_state *x); |
| 1510 | struct xfrm_state *xfrm_state_lookup(struct net *net, u32 mark, |
| 1511 | const xfrm_address_t *daddr, __be32 spi, |
| 1512 | u8 proto, unsigned short family); |
| 1513 | struct xfrm_state *xfrm_state_lookup_byaddr(struct net *net, u32 mark, |
| 1514 | const xfrm_address_t *daddr, |
| 1515 | const xfrm_address_t *saddr, |
| 1516 | u8 proto, |
| 1517 | unsigned short family); |
Masahide NAKAMURA | 41a49cc | 2006-08-23 22:48:31 -0700 | [diff] [blame] | 1518 | #ifdef CONFIG_XFRM_SUB_POLICY |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1519 | int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n, |
Fan Du | 283bc9f | 2013-11-07 17:47:50 +0800 | [diff] [blame] | 1520 | unsigned short family, struct net *net); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1521 | int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n, |
| 1522 | unsigned short family); |
Masahide NAKAMURA | 41a49cc | 2006-08-23 22:48:31 -0700 | [diff] [blame] | 1523 | #else |
| 1524 | static inline int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, |
Fan Du | 283bc9f | 2013-11-07 17:47:50 +0800 | [diff] [blame] | 1525 | int n, unsigned short family, struct net *net) |
Masahide NAKAMURA | 41a49cc | 2006-08-23 22:48:31 -0700 | [diff] [blame] | 1526 | { |
| 1527 | return -ENOSYS; |
| 1528 | } |
| 1529 | |
| 1530 | static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, |
| 1531 | int n, unsigned short family) |
| 1532 | { |
| 1533 | return -ENOSYS; |
| 1534 | } |
| 1535 | #endif |
Jamal Hadi Salim | af11e31 | 2007-05-04 12:55:13 -0700 | [diff] [blame] | 1536 | |
| 1537 | struct xfrmk_sadinfo { |
| 1538 | u32 sadhcnt; /* current hash bkts */ |
| 1539 | u32 sadhmcnt; /* max allowed hash bkts */ |
| 1540 | u32 sadcnt; /* current running count */ |
| 1541 | }; |
| 1542 | |
Jamal Hadi Salim | 5a6d341 | 2007-05-04 12:55:39 -0700 | [diff] [blame] | 1543 | struct xfrmk_spdinfo { |
| 1544 | u32 incnt; |
| 1545 | u32 outcnt; |
| 1546 | u32 fwdcnt; |
| 1547 | u32 inscnt; |
| 1548 | u32 outscnt; |
| 1549 | u32 fwdscnt; |
| 1550 | u32 spdhcnt; |
| 1551 | u32 spdhmcnt; |
| 1552 | }; |
| 1553 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1554 | struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq); |
| 1555 | int xfrm_state_delete(struct xfrm_state *x); |
Tetsuo Handa | 2e71029 | 2014-04-22 21:48:30 +0900 | [diff] [blame] | 1556 | int xfrm_state_flush(struct net *net, u8 proto, bool task_valid); |
Steffen Klassert | d77e38e | 2017-04-14 10:06:10 +0200 | [diff] [blame] | 1557 | int xfrm_dev_state_flush(struct net *net, struct net_device *dev, bool task_valid); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1558 | void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si); |
| 1559 | void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si); |
| 1560 | u32 xfrm_replay_seqhi(struct xfrm_state *x, __be32 net_seq); |
| 1561 | int xfrm_init_replay(struct xfrm_state *x); |
| 1562 | int xfrm_state_mtu(struct xfrm_state *x, int mtu); |
Ilan Tayari | ffdb521 | 2017-08-01 12:49:08 +0300 | [diff] [blame] | 1563 | int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1564 | int xfrm_init_state(struct xfrm_state *x); |
| 1565 | int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb); |
| 1566 | int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type); |
| 1567 | int xfrm_input_resume(struct sk_buff *skb, int nexthdr); |
| 1568 | int xfrm_output_resume(struct sk_buff *skb, int err); |
David Miller | 7026b1d | 2015-04-05 22:19:04 -0400 | [diff] [blame] | 1569 | int xfrm_output(struct sock *sk, struct sk_buff *skb); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1570 | int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb); |
| 1571 | void xfrm_local_error(struct sk_buff *skb, int mtu); |
| 1572 | int xfrm4_extract_header(struct sk_buff *skb); |
| 1573 | int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb); |
| 1574 | int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi, |
| 1575 | int encap_type); |
| 1576 | int xfrm4_transport_finish(struct sk_buff *skb, int async); |
| 1577 | int xfrm4_rcv(struct sk_buff *skb); |
Steffen Klassert | 1e29537 | 2017-02-15 09:39:49 +0100 | [diff] [blame] | 1578 | int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq); |
Herbert Xu | c4541b4 | 2007-10-17 21:28:53 -0700 | [diff] [blame] | 1579 | |
| 1580 | static inline int xfrm4_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi) |
| 1581 | { |
Steffen Klassert | 70be6c9 | 2014-02-21 08:41:09 +0100 | [diff] [blame] | 1582 | XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4 = NULL; |
Steffen Klassert | 3328715 | 2014-02-21 08:41:08 +0100 | [diff] [blame] | 1583 | XFRM_SPI_SKB_CB(skb)->family = AF_INET; |
| 1584 | XFRM_SPI_SKB_CB(skb)->daddroff = offsetof(struct iphdr, daddr); |
| 1585 | return xfrm_input(skb, nexthdr, spi, 0); |
Herbert Xu | c4541b4 | 2007-10-17 21:28:53 -0700 | [diff] [blame] | 1586 | } |
| 1587 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1588 | int xfrm4_extract_output(struct xfrm_state *x, struct sk_buff *skb); |
| 1589 | int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb); |
Eric W. Biederman | ede2059 | 2015-10-07 16:48:47 -0500 | [diff] [blame] | 1590 | int xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb); |
David Miller | 7026b1d | 2015-04-05 22:19:04 -0400 | [diff] [blame] | 1591 | int xfrm4_output_finish(struct sock *sk, struct sk_buff *skb); |
Steffen Klassert | 3328715 | 2014-02-21 08:41:08 +0100 | [diff] [blame] | 1592 | int xfrm4_rcv_cb(struct sk_buff *skb, u8 protocol, int err); |
| 1593 | int xfrm4_protocol_register(struct xfrm4_protocol *handler, unsigned char protocol); |
| 1594 | int xfrm4_protocol_deregister(struct xfrm4_protocol *handler, unsigned char protocol); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1595 | int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family); |
| 1596 | int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1597 | void xfrm4_local_error(struct sk_buff *skb, u32 mtu); |
| 1598 | int xfrm6_extract_header(struct sk_buff *skb); |
| 1599 | int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb); |
Nicolas Dichtel | 63c4378 | 2016-09-19 16:17:57 +0200 | [diff] [blame] | 1600 | int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi, |
| 1601 | struct ip6_tnl *t); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1602 | int xfrm6_transport_finish(struct sk_buff *skb, int async); |
Nicolas Dichtel | 63c4378 | 2016-09-19 16:17:57 +0200 | [diff] [blame] | 1603 | int xfrm6_rcv_tnl(struct sk_buff *skb, struct ip6_tnl *t); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1604 | int xfrm6_rcv(struct sk_buff *skb); |
| 1605 | int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr, |
| 1606 | xfrm_address_t *saddr, u8 proto); |
David S. Miller | 7b77d16 | 2013-09-30 15:11:00 -0400 | [diff] [blame] | 1607 | void xfrm6_local_error(struct sk_buff *skb, u32 mtu); |
Steffen Klassert | 7e14ea1 | 2014-03-14 07:28:07 +0100 | [diff] [blame] | 1608 | int xfrm6_rcv_cb(struct sk_buff *skb, u8 protocol, int err); |
| 1609 | int xfrm6_protocol_register(struct xfrm6_protocol *handler, unsigned char protocol); |
| 1610 | int xfrm6_protocol_deregister(struct xfrm6_protocol *handler, unsigned char protocol); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1611 | int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family); |
David S. Miller | 7b77d16 | 2013-09-30 15:11:00 -0400 | [diff] [blame] | 1612 | int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler, unsigned short family); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1613 | __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr); |
| 1614 | __be32 xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr); |
| 1615 | int xfrm6_extract_output(struct xfrm_state *x, struct sk_buff *skb); |
| 1616 | int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb); |
Eric W. Biederman | ede2059 | 2015-10-07 16:48:47 -0500 | [diff] [blame] | 1617 | int xfrm6_output(struct net *net, struct sock *sk, struct sk_buff *skb); |
David Miller | 7026b1d | 2015-04-05 22:19:04 -0400 | [diff] [blame] | 1618 | int xfrm6_output_finish(struct sock *sk, struct sk_buff *skb); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1619 | int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb, |
| 1620 | u8 **prevhdr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | |
| 1622 | #ifdef CONFIG_XFRM |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1623 | int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb); |
| 1624 | int xfrm_user_policy(struct sock *sk, int optname, |
| 1625 | u8 __user *optval, int optlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | #else |
| 1627 | static inline int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen) |
| 1628 | { |
| 1629 | return -ENOPROTOOPT; |
| 1630 | } |
| 1631 | |
James Chapman | 067b207 | 2007-07-05 17:08:05 -0700 | [diff] [blame] | 1632 | static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1633 | { |
| 1634 | /* should not happen */ |
| 1635 | kfree_skb(skb); |
| 1636 | return 0; |
| 1637 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1638 | #endif |
| 1639 | |
Steffen Klassert | d77e38e | 2017-04-14 10:06:10 +0200 | [diff] [blame] | 1640 | struct dst_entry *__xfrm_dst_lookup(struct net *net, int tos, int oif, |
| 1641 | const xfrm_address_t *saddr, |
| 1642 | const xfrm_address_t *daddr, |
| 1643 | int family); |
| 1644 | |
Alexey Dobriyan | 0331b1f | 2008-11-25 17:21:45 -0800 | [diff] [blame] | 1645 | struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp); |
Timo Teras | 4c563f7 | 2008-02-28 21:31:08 -0800 | [diff] [blame] | 1646 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1647 | void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type); |
| 1648 | int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk, |
| 1649 | int (*func)(struct xfrm_policy *, int, int, void*), |
| 1650 | void *); |
Fan Du | 283bc9f | 2013-11-07 17:47:50 +0800 | [diff] [blame] | 1651 | void xfrm_policy_walk_done(struct xfrm_policy_walk *walk, struct net *net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl); |
Jamal Hadi Salim | 8ca2e93 | 2010-02-22 11:32:57 +0000 | [diff] [blame] | 1653 | struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark, |
| 1654 | u8 type, int dir, |
Masahide NAKAMURA | 4e81bb8 | 2006-08-23 22:43:30 -0700 | [diff] [blame] | 1655 | struct xfrm_selector *sel, |
Eric Paris | ef41aaa | 2007-03-07 15:37:58 -0800 | [diff] [blame] | 1656 | struct xfrm_sec_ctx *ctx, int delete, |
| 1657 | int *err); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1658 | struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u8, int dir, |
| 1659 | u32 id, int delete, int *err); |
Tetsuo Handa | 2e71029 | 2014-04-22 21:48:30 +0900 | [diff] [blame] | 1660 | int xfrm_policy_flush(struct net *net, u8 type, bool task_valid); |
Christophe Gouault | 880a6fa | 2014-08-29 16:16:05 +0200 | [diff] [blame] | 1661 | void xfrm_policy_hash_rebuild(struct net *net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1662 | u32 xfrm_get_acqseq(void); |
Fan Du | 776e9dd | 2013-12-16 18:47:49 +0800 | [diff] [blame] | 1663 | int verify_spi_info(u8 proto, u32 min, u32 max); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1664 | int xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi); |
Mathias Krause | e473fcb | 2013-06-26 23:56:58 +0200 | [diff] [blame] | 1665 | struct xfrm_state *xfrm_find_acq(struct net *net, const struct xfrm_mark *mark, |
Jamal Hadi Salim | bd55775 | 2010-02-22 16:20:22 -0800 | [diff] [blame] | 1666 | u8 mode, u32 reqid, u8 proto, |
David S. Miller | a70486f | 2011-02-27 23:17:24 -0800 | [diff] [blame] | 1667 | const xfrm_address_t *daddr, |
| 1668 | const xfrm_address_t *saddr, int create, |
Jamal Hadi Salim | bd55775 | 2010-02-22 16:20:22 -0800 | [diff] [blame] | 1669 | unsigned short family); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1670 | int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | |
Shinta Sugimoto | 80c9aba | 2007-02-08 13:11:42 -0800 | [diff] [blame] | 1672 | #ifdef CONFIG_XFRM_MIGRATE |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1673 | int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, |
| 1674 | const struct xfrm_migrate *m, int num_bundles, |
Antony Antony | 8bafd73 | 2017-06-06 12:12:14 +0200 | [diff] [blame] | 1675 | const struct xfrm_kmaddress *k, |
| 1676 | const struct xfrm_encap_tmpl *encap); |
Fan Du | 283bc9f | 2013-11-07 17:47:50 +0800 | [diff] [blame] | 1677 | struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1678 | struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, |
Antony Antony | 4ab47d4 | 2017-06-06 12:12:13 +0200 | [diff] [blame] | 1679 | struct xfrm_migrate *m, |
| 1680 | struct xfrm_encap_tmpl *encap); |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1681 | int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, |
| 1682 | struct xfrm_migrate *m, int num_bundles, |
Antony Antony | 4ab47d4 | 2017-06-06 12:12:13 +0200 | [diff] [blame] | 1683 | struct xfrm_kmaddress *k, struct net *net, |
| 1684 | struct xfrm_encap_tmpl *encap); |
Shinta Sugimoto | 80c9aba | 2007-02-08 13:11:42 -0800 | [diff] [blame] | 1685 | #endif |
| 1686 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1687 | int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport); |
| 1688 | void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 portid); |
| 1689 | int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, |
| 1690 | xfrm_address_t *addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1692 | void xfrm_input_init(void); |
| 1693 | int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1694 | |
Joe Perches | d511337 | 2013-09-23 11:33:53 -0700 | [diff] [blame] | 1695 | void xfrm_probe_algs(void); |
| 1696 | int xfrm_count_pfkey_auth_supported(void); |
| 1697 | int xfrm_count_pfkey_enc_supported(void); |
| 1698 | struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx); |
| 1699 | struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx); |
| 1700 | struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id); |
| 1701 | struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id); |
| 1702 | struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id); |
| 1703 | struct xfrm_algo_desc *xfrm_aalg_get_byname(const char *name, int probe); |
| 1704 | struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe); |
| 1705 | struct xfrm_algo_desc *xfrm_calg_get_byname(const char *name, int probe); |
| 1706 | struct xfrm_algo_desc *xfrm_aead_get_byname(const char *name, int icv_len, |
| 1707 | int probe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1708 | |
YOSHIFUJI Hideaki / 吉藤英明 | ff88b30 | 2013-01-29 12:48:31 +0000 | [diff] [blame] | 1709 | static inline bool xfrm6_addr_equal(const xfrm_address_t *a, |
| 1710 | const xfrm_address_t *b) |
| 1711 | { |
| 1712 | return ipv6_addr_equal((const struct in6_addr *)a, |
| 1713 | (const struct in6_addr *)b); |
| 1714 | } |
| 1715 | |
YOSHIFUJI Hideaki / 吉藤英明 | 70e94e6 | 2013-01-29 12:48:50 +0000 | [diff] [blame] | 1716 | static inline bool xfrm_addr_equal(const xfrm_address_t *a, |
| 1717 | const xfrm_address_t *b, |
| 1718 | sa_family_t family) |
| 1719 | { |
| 1720 | switch (family) { |
| 1721 | default: |
| 1722 | case AF_INET: |
| 1723 | return ((__force u32)a->a4 ^ (__force u32)b->a4) == 0; |
| 1724 | case AF_INET6: |
| 1725 | return xfrm6_addr_equal(a, b); |
| 1726 | } |
| 1727 | } |
| 1728 | |
Herbert Xu | 77d8d7a | 2005-10-05 12:15:12 -0700 | [diff] [blame] | 1729 | static inline int xfrm_policy_id2dir(u32 index) |
| 1730 | { |
| 1731 | return index & 7; |
| 1732 | } |
| 1733 | |
Alexey Dobriyan | a6483b7 | 2008-11-25 17:38:20 -0800 | [diff] [blame] | 1734 | #ifdef CONFIG_XFRM |
| 1735 | static inline int xfrm_aevent_is_on(struct net *net) |
Jamal Hadi Salim | f8cd548 | 2006-03-20 19:15:11 -0800 | [diff] [blame] | 1736 | { |
Patrick McHardy | be33690 | 2006-03-20 22:40:54 -0800 | [diff] [blame] | 1737 | struct sock *nlsk; |
| 1738 | int ret = 0; |
| 1739 | |
| 1740 | rcu_read_lock(); |
Alexey Dobriyan | a6483b7 | 2008-11-25 17:38:20 -0800 | [diff] [blame] | 1741 | nlsk = rcu_dereference(net->xfrm.nlsk); |
Patrick McHardy | be33690 | 2006-03-20 22:40:54 -0800 | [diff] [blame] | 1742 | if (nlsk) |
| 1743 | ret = netlink_has_listeners(nlsk, XFRMNLGRP_AEVENTS); |
| 1744 | rcu_read_unlock(); |
| 1745 | return ret; |
Jamal Hadi Salim | f8cd548 | 2006-03-20 19:15:11 -0800 | [diff] [blame] | 1746 | } |
Horia Geanta | 0f24558 | 2014-02-12 16:20:06 +0200 | [diff] [blame] | 1747 | |
| 1748 | static inline int xfrm_acquire_is_on(struct net *net) |
| 1749 | { |
| 1750 | struct sock *nlsk; |
| 1751 | int ret = 0; |
| 1752 | |
| 1753 | rcu_read_lock(); |
| 1754 | nlsk = rcu_dereference(net->xfrm.nlsk); |
| 1755 | if (nlsk) |
| 1756 | ret = netlink_has_listeners(nlsk, XFRMNLGRP_ACQUIRE); |
| 1757 | rcu_read_unlock(); |
| 1758 | |
| 1759 | return ret; |
| 1760 | } |
Alexey Dobriyan | a6483b7 | 2008-11-25 17:38:20 -0800 | [diff] [blame] | 1761 | #endif |
Jamal Hadi Salim | f8cd548 | 2006-03-20 19:15:11 -0800 | [diff] [blame] | 1762 | |
Steffen Klassert | ee5c231 | 2014-02-19 13:33:24 +0100 | [diff] [blame] | 1763 | static inline int aead_len(struct xfrm_algo_aead *alg) |
| 1764 | { |
| 1765 | return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); |
| 1766 | } |
| 1767 | |
David S. Miller | 8515862 | 2011-02-27 23:07:02 -0800 | [diff] [blame] | 1768 | static inline int xfrm_alg_len(const struct xfrm_algo *alg) |
Eric Dumazet | 0f99be0 | 2008-01-08 23:39:06 -0800 | [diff] [blame] | 1769 | { |
| 1770 | return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); |
| 1771 | } |
| 1772 | |
David S. Miller | 8515862 | 2011-02-27 23:07:02 -0800 | [diff] [blame] | 1773 | static inline int xfrm_alg_auth_len(const struct xfrm_algo_auth *alg) |
Martin Willi | 4447bb3 | 2009-11-25 00:29:52 +0000 | [diff] [blame] | 1774 | { |
| 1775 | return sizeof(*alg) + ((alg->alg_key_len + 7) / 8); |
| 1776 | } |
| 1777 | |
Steffen Klassert | 9736acf | 2011-03-08 00:05:43 +0000 | [diff] [blame] | 1778 | static inline int xfrm_replay_state_esn_len(struct xfrm_replay_state_esn *replay_esn) |
| 1779 | { |
| 1780 | return sizeof(*replay_esn) + replay_esn->bmp_len * sizeof(__u32); |
| 1781 | } |
| 1782 | |
Shinta Sugimoto | 80c9aba | 2007-02-08 13:11:42 -0800 | [diff] [blame] | 1783 | #ifdef CONFIG_XFRM_MIGRATE |
Steffen Klassert | af2f464 | 2011-03-28 19:46:39 +0000 | [diff] [blame] | 1784 | static inline int xfrm_replay_clone(struct xfrm_state *x, |
| 1785 | struct xfrm_state *orig) |
| 1786 | { |
| 1787 | x->replay_esn = kzalloc(xfrm_replay_state_esn_len(orig->replay_esn), |
| 1788 | GFP_KERNEL); |
| 1789 | if (!x->replay_esn) |
| 1790 | return -ENOMEM; |
| 1791 | |
| 1792 | x->replay_esn->bmp_len = orig->replay_esn->bmp_len; |
| 1793 | x->replay_esn->replay_window = orig->replay_esn->replay_window; |
| 1794 | |
| 1795 | x->preplay_esn = kmemdup(x->replay_esn, |
| 1796 | xfrm_replay_state_esn_len(x->replay_esn), |
| 1797 | GFP_KERNEL); |
| 1798 | if (!x->preplay_esn) { |
| 1799 | kfree(x->replay_esn); |
| 1800 | return -ENOMEM; |
| 1801 | } |
| 1802 | |
| 1803 | return 0; |
| 1804 | } |
| 1805 | |
Steffen Klassert | ee5c231 | 2014-02-19 13:33:24 +0100 | [diff] [blame] | 1806 | static inline struct xfrm_algo_aead *xfrm_algo_aead_clone(struct xfrm_algo_aead *orig) |
| 1807 | { |
| 1808 | return kmemdup(orig, aead_len(orig), GFP_KERNEL); |
| 1809 | } |
| 1810 | |
| 1811 | |
Shinta Sugimoto | 80c9aba | 2007-02-08 13:11:42 -0800 | [diff] [blame] | 1812 | static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig) |
| 1813 | { |
Eric Dumazet | 0f99be0 | 2008-01-08 23:39:06 -0800 | [diff] [blame] | 1814 | return kmemdup(orig, xfrm_alg_len(orig), GFP_KERNEL); |
Shinta Sugimoto | 80c9aba | 2007-02-08 13:11:42 -0800 | [diff] [blame] | 1815 | } |
| 1816 | |
Martin Willi | 4447bb3 | 2009-11-25 00:29:52 +0000 | [diff] [blame] | 1817 | static inline struct xfrm_algo_auth *xfrm_algo_auth_clone(struct xfrm_algo_auth *orig) |
| 1818 | { |
| 1819 | return kmemdup(orig, xfrm_alg_auth_len(orig), GFP_KERNEL); |
| 1820 | } |
| 1821 | |
Shinta Sugimoto | 80c9aba | 2007-02-08 13:11:42 -0800 | [diff] [blame] | 1822 | static inline void xfrm_states_put(struct xfrm_state **states, int n) |
| 1823 | { |
| 1824 | int i; |
| 1825 | for (i = 0; i < n; i++) |
| 1826 | xfrm_state_put(*(states + i)); |
| 1827 | } |
| 1828 | |
| 1829 | static inline void xfrm_states_delete(struct xfrm_state **states, int n) |
| 1830 | { |
| 1831 | int i; |
| 1832 | for (i = 0; i < n; i++) |
| 1833 | xfrm_state_delete(*(states + i)); |
| 1834 | } |
| 1835 | #endif |
Jamal Hadi Salim | f8cd548 | 2006-03-20 19:15:11 -0800 | [diff] [blame] | 1836 | |
Alexey Dobriyan | def8b4f | 2008-10-28 13:24:06 -0700 | [diff] [blame] | 1837 | #ifdef CONFIG_XFRM |
Herbert Xu | 0050112 | 2007-12-11 01:53:43 -0800 | [diff] [blame] | 1838 | static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb) |
| 1839 | { |
| 1840 | return skb->sp->xvec[skb->sp->len - 1]; |
| 1841 | } |
Steffen Klassert | 54ef207 | 2017-02-15 09:39:54 +0100 | [diff] [blame] | 1842 | static inline struct xfrm_offload *xfrm_offload(struct sk_buff *skb) |
| 1843 | { |
| 1844 | struct sec_path *sp = skb->sp; |
| 1845 | |
| 1846 | if (!sp || !sp->olen || sp->len != sp->olen) |
| 1847 | return NULL; |
| 1848 | |
| 1849 | return &sp->ovec[sp->olen - 1]; |
| 1850 | } |
Alexey Dobriyan | def8b4f | 2008-10-28 13:24:06 -0700 | [diff] [blame] | 1851 | #endif |
Herbert Xu | 0050112 | 2007-12-11 01:53:43 -0800 | [diff] [blame] | 1852 | |
Steffen Klassert | d77e38e | 2017-04-14 10:06:10 +0200 | [diff] [blame] | 1853 | void __net_init xfrm_dev_init(void); |
Hangbin Liu | b81f884 | 2017-06-01 14:57:56 +0800 | [diff] [blame] | 1854 | |
| 1855 | #ifdef CONFIG_XFRM_OFFLOAD |
Steffen Klassert | f6e2711 | 2017-04-14 10:07:28 +0200 | [diff] [blame] | 1856 | int validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features); |
Steffen Klassert | d77e38e | 2017-04-14 10:06:10 +0200 | [diff] [blame] | 1857 | int xfrm_dev_state_add(struct net *net, struct xfrm_state *x, |
| 1858 | struct xfrm_user_offload *xuo); |
| 1859 | bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x); |
| 1860 | |
Steffen Klassert | f70f250 | 2017-08-01 12:49:10 +0300 | [diff] [blame^] | 1861 | static inline bool xfrm_dst_offload_ok(struct dst_entry *dst) |
| 1862 | { |
| 1863 | struct xfrm_state *x = dst->xfrm; |
| 1864 | |
| 1865 | if (!x || !x->type_offload) |
| 1866 | return false; |
| 1867 | |
| 1868 | if (x->xso.offload_handle && (x->xso.dev == dst->path->dev) && |
| 1869 | !dst->child->xfrm) |
| 1870 | return true; |
| 1871 | |
| 1872 | return false; |
| 1873 | } |
| 1874 | |
Steffen Klassert | d77e38e | 2017-04-14 10:06:10 +0200 | [diff] [blame] | 1875 | static inline void xfrm_dev_state_delete(struct xfrm_state *x) |
| 1876 | { |
| 1877 | struct xfrm_state_offload *xso = &x->xso; |
| 1878 | |
| 1879 | if (xso->dev) |
| 1880 | xso->dev->xfrmdev_ops->xdo_dev_state_delete(x); |
| 1881 | } |
| 1882 | |
| 1883 | static inline void xfrm_dev_state_free(struct xfrm_state *x) |
| 1884 | { |
| 1885 | struct xfrm_state_offload *xso = &x->xso; |
| 1886 | struct net_device *dev = xso->dev; |
| 1887 | |
| 1888 | if (dev && dev->xfrmdev_ops) { |
| 1889 | dev->xfrmdev_ops->xdo_dev_state_free(x); |
| 1890 | xso->dev = NULL; |
| 1891 | dev_put(dev); |
| 1892 | } |
| 1893 | } |
| 1894 | #else |
Steffen Klassert | f6e2711 | 2017-04-14 10:07:28 +0200 | [diff] [blame] | 1895 | static inline int validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t features) |
| 1896 | { |
| 1897 | return 0; |
| 1898 | } |
| 1899 | |
Steffen Klassert | d77e38e | 2017-04-14 10:06:10 +0200 | [diff] [blame] | 1900 | static inline int xfrm_dev_state_add(struct net *net, struct xfrm_state *x, struct xfrm_user_offload *xuo) |
| 1901 | { |
| 1902 | return 0; |
| 1903 | } |
| 1904 | |
| 1905 | static inline void xfrm_dev_state_delete(struct xfrm_state *x) |
| 1906 | { |
| 1907 | } |
| 1908 | |
| 1909 | static inline void xfrm_dev_state_free(struct xfrm_state *x) |
| 1910 | { |
| 1911 | } |
| 1912 | |
| 1913 | static inline bool xfrm_dev_offload_ok(struct sk_buff *skb, struct xfrm_state *x) |
| 1914 | { |
| 1915 | return false; |
| 1916 | } |
Steffen Klassert | f70f250 | 2017-08-01 12:49:10 +0300 | [diff] [blame^] | 1917 | |
| 1918 | static inline bool xfrm_dst_offload_ok(struct dst_entry *dst) |
| 1919 | { |
| 1920 | return false; |
| 1921 | } |
Steffen Klassert | d77e38e | 2017-04-14 10:06:10 +0200 | [diff] [blame] | 1922 | #endif |
| 1923 | |
Jamal Hadi Salim | bf825f8 | 2010-02-22 11:32:54 +0000 | [diff] [blame] | 1924 | static inline int xfrm_mark_get(struct nlattr **attrs, struct xfrm_mark *m) |
| 1925 | { |
| 1926 | if (attrs[XFRMA_MARK]) |
Andreas Steffen | 4efd7e8 | 2010-06-30 10:41:15 -0700 | [diff] [blame] | 1927 | memcpy(m, nla_data(attrs[XFRMA_MARK]), sizeof(struct xfrm_mark)); |
Jamal Hadi Salim | bf825f8 | 2010-02-22 11:32:54 +0000 | [diff] [blame] | 1928 | else |
| 1929 | m->v = m->m = 0; |
| 1930 | |
| 1931 | return m->v & m->m; |
| 1932 | } |
| 1933 | |
David S. Miller | e3dfa38 | 2011-02-27 23:20:19 -0800 | [diff] [blame] | 1934 | static inline int xfrm_mark_put(struct sk_buff *skb, const struct xfrm_mark *m) |
Jamal Hadi Salim | bf825f8 | 2010-02-22 11:32:54 +0000 | [diff] [blame] | 1935 | { |
David S. Miller | 1d1e34d | 2012-06-27 21:57:03 -0700 | [diff] [blame] | 1936 | int ret = 0; |
Jamal Hadi Salim | bf825f8 | 2010-02-22 11:32:54 +0000 | [diff] [blame] | 1937 | |
David S. Miller | 1d1e34d | 2012-06-27 21:57:03 -0700 | [diff] [blame] | 1938 | if (m->m | m->v) |
| 1939 | ret = nla_put(skb, XFRMA_MARK, sizeof(struct xfrm_mark), m); |
| 1940 | return ret; |
Jamal Hadi Salim | bf825f8 | 2010-02-22 11:32:54 +0000 | [diff] [blame] | 1941 | } |
| 1942 | |
Steffen Klassert | 70be6c9 | 2014-02-21 08:41:09 +0100 | [diff] [blame] | 1943 | static inline int xfrm_tunnel_check(struct sk_buff *skb, struct xfrm_state *x, |
| 1944 | unsigned int family) |
| 1945 | { |
| 1946 | bool tunnel = false; |
| 1947 | |
| 1948 | switch(family) { |
| 1949 | case AF_INET: |
| 1950 | if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4) |
| 1951 | tunnel = true; |
| 1952 | break; |
| 1953 | case AF_INET6: |
| 1954 | if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6) |
| 1955 | tunnel = true; |
| 1956 | break; |
| 1957 | } |
| 1958 | if (tunnel && !(x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL)) |
| 1959 | return -EINVAL; |
| 1960 | |
| 1961 | return 0; |
| 1962 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1963 | #endif /* _NET_XFRM_H */ |