summaryrefslogtreecommitdiff
path: root/include/net/xfrm.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/net/xfrm.h')
-rw-r--r--include/net/xfrm.h212
1 files changed, 124 insertions, 88 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 9c5ee9f20b6..11e0b1d6bd4 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -8,8 +8,8 @@
#include <linux/list.h>
#include <linux/skbuff.h>
#include <linux/socket.h>
-#include <linux/crypto.h>
#include <linux/pfkeyv2.h>
+#include <linux/ipsec.h>
#include <linux/in6.h>
#include <linux/mutex.h>
@@ -94,8 +94,9 @@ extern struct mutex xfrm_cfg_mutex;
struct xfrm_state
{
/* Note: bydst is re-used during gc */
- struct list_head bydst;
- struct list_head byspi;
+ struct hlist_node bydst;
+ struct hlist_node bysrc;
+ struct hlist_node byspi;
atomic_t refcnt;
spinlock_t lock;
@@ -103,6 +104,8 @@ struct xfrm_state
struct xfrm_id id;
struct xfrm_selector sel;
+ u32 genid;
+
/* Key manger bits */
struct {
u8 state;
@@ -133,6 +136,9 @@ struct xfrm_state
/* Data for encapsulator */
struct xfrm_encap_tmpl *encap;
+ /* Data for care-of address */
+ xfrm_address_t *coaddr;
+
/* IPComp needs an IPIP tunnel for handling uncompressed packets */
struct xfrm_state *tunnel;
@@ -163,6 +169,9 @@ struct xfrm_state
struct xfrm_lifetime_cur curlft;
struct timer_list timer;
+ /* Last used time */
+ u64 lastused;
+
/* Reference to data common to all the instances of this
* transformer. */
struct xfrm_type *type;
@@ -196,6 +205,7 @@ struct km_event
u32 proto;
u32 byid;
u32 aevent;
+ u32 type;
} data;
u32 seq;
@@ -212,6 +222,7 @@ struct xfrm_policy_afinfo {
struct dst_ops *dst_ops;
void (*garbage_collect)(void);
int (*dst_lookup)(struct xfrm_dst **dst, struct flowi *fl);
+ int (*get_saddr)(xfrm_address_t *saddr, xfrm_address_t *daddr);
struct dst_entry *(*find_bundle)(struct flowi *fl, struct xfrm_policy *policy);
int (*bundle_create)(struct xfrm_policy *policy,
struct xfrm_state **xfrm,
@@ -235,16 +246,12 @@ extern int __xfrm_state_delete(struct xfrm_state *x);
struct xfrm_state_afinfo {
unsigned short family;
- struct list_head *state_bydst;
- struct list_head *state_byspi;
int (*init_flags)(struct xfrm_state *x);
void (*init_tempsel)(struct xfrm_state *x, struct flowi *fl,
struct xfrm_tmpl *tmpl,
xfrm_address_t *daddr, xfrm_address_t *saddr);
- struct xfrm_state *(*state_lookup)(xfrm_address_t *daddr, u32 spi, u8 proto);
- struct xfrm_state *(*find_acq)(u8 mode, u32 reqid, u8 proto,
- xfrm_address_t *daddr, xfrm_address_t *saddr,
- int create);
+ int (*tmpl_sort)(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n);
+ int (*state_sort)(struct xfrm_state **dst, struct xfrm_state **src, int n);
};
extern int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo);
@@ -257,11 +264,17 @@ struct xfrm_type
char *description;
struct module *owner;
__u8 proto;
+ __u8 flags;
+#define XFRM_TYPE_NON_FRAGMENT 1
int (*init_state)(struct xfrm_state *x);
void (*destructor)(struct xfrm_state *);
int (*input)(struct xfrm_state *, struct sk_buff *skb);
int (*output)(struct xfrm_state *, struct sk_buff *pskb);
+ int (*reject)(struct xfrm_state *, struct sk_buff *, struct flowi *);
+ int (*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **);
+ xfrm_address_t *(*local_addr)(struct xfrm_state *, xfrm_address_t *);
+ xfrm_address_t *(*remote_addr)(struct xfrm_state *, xfrm_address_t *);
/* Estimate maximal size of result of transformation of a dgram */
u32 (*get_max_size)(struct xfrm_state *, int size);
};
@@ -273,7 +286,7 @@ extern void xfrm_put_type(struct xfrm_type *type);
struct xfrm_mode {
int (*input)(struct xfrm_state *x, struct sk_buff *skb);
- int (*output)(struct sk_buff *skb);
+ int (*output)(struct xfrm_state *x,struct sk_buff *skb);
struct module *owner;
unsigned int encap;
@@ -299,7 +312,7 @@ struct xfrm_tmpl
__u32 reqid;
-/* Mode: transport/tunnel */
+/* Mode: transport, tunnel etc. */
__u8 mode;
/* Sharing mode: unique, this session only, this user only etc. */
@@ -314,18 +327,20 @@ struct xfrm_tmpl
__u32 calgos;
};
-#define XFRM_MAX_DEPTH 4
+#define XFRM_MAX_DEPTH 6
struct xfrm_policy
{
struct xfrm_policy *next;
- struct list_head list;
+ struct hlist_node bydst;
+ struct hlist_node byidx;
/* This lock only affects elements except for entry. */
rwlock_t lock;
atomic_t refcnt;
struct timer_list timer;
+ u8 type;
u32 priority;
u32 index;
struct xfrm_selector selector;
@@ -363,16 +378,16 @@ struct xfrm_mgr
char *id;
int (*notify)(struct xfrm_state *x, struct km_event *c);
int (*acquire)(struct xfrm_state *x, struct xfrm_tmpl *, struct xfrm_policy *xp, int dir);
- struct xfrm_policy *(*compile_policy)(u16 family, int opt, u8 *data, int len, int *dir);
+ struct xfrm_policy *(*compile_policy)(struct sock *sk, int opt, u8 *data, int len, int *dir);
int (*new_mapping)(struct xfrm_state *x, xfrm_address_t *ipaddr, u16 sport);
int (*notify_policy)(struct xfrm_policy *x, int dir, struct km_event *c);
+ int (*report)(u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
};
extern int xfrm_register_km(struct xfrm_mgr *km);
extern int xfrm_unregister_km(struct xfrm_mgr *km);
-
-extern struct xfrm_policy *xfrm_policy_list[XFRM_POLICY_MAX*2];
+extern unsigned int xfrm_policy_count[XFRM_POLICY_MAX*2];
static inline void xfrm_pol_hold(struct xfrm_policy *policy)
{
@@ -388,67 +403,19 @@ static inline void xfrm_pol_put(struct xfrm_policy *policy)
__xfrm_policy_destroy(policy);
}
-#define XFRM_DST_HSIZE 1024
-
-static __inline__
-unsigned __xfrm4_dst_hash(xfrm_address_t *addr)
-{
- unsigned h;
- h = ntohl(addr->a4);
- h = (h ^ (h>>16)) % XFRM_DST_HSIZE;
- return h;
-}
-
-static __inline__
-unsigned __xfrm6_dst_hash(xfrm_address_t *addr)
-{
- unsigned h;
- h = ntohl(addr->a6[2]^addr->a6[3]);
- h = (h ^ (h>>16)) % XFRM_DST_HSIZE;
- return h;
-}
-
-static __inline__
-unsigned xfrm_dst_hash(xfrm_address_t *addr, unsigned short family)
-{
- switch (family) {
- case AF_INET:
- return __xfrm4_dst_hash(addr);
- case AF_INET6:
- return __xfrm6_dst_hash(addr);
- }
- return 0;
-}
-
-static __inline__
-unsigned __xfrm4_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto)
+#ifdef CONFIG_XFRM_SUB_POLICY
+static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols)
{
- unsigned h;
- h = ntohl(addr->a4^spi^proto);
- h = (h ^ (h>>10) ^ (h>>20)) % XFRM_DST_HSIZE;
- return h;
+ int i;
+ for (i = npols - 1; i >= 0; --i)
+ xfrm_pol_put(pols[i]);
}
-
-static __inline__
-unsigned __xfrm6_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto)
-{
- unsigned h;
- h = ntohl(addr->a6[2]^addr->a6[3]^spi^proto);
- h = (h ^ (h>>10) ^ (h>>20)) % XFRM_DST_HSIZE;
- return h;
-}
-
-static __inline__
-unsigned xfrm_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto, unsigned short family)
+#else
+static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols)
{
- switch (family) {
- case AF_INET:
- return __xfrm4_spi_hash(addr, spi, proto);
- case AF_INET6:
- return __xfrm6_spi_hash(addr, spi, proto);
- }
- return 0; /*XXX*/
+ xfrm_pol_put(pols[0]);
}
+#endif
extern void __xfrm_state_destroy(struct xfrm_state *);
@@ -508,6 +475,11 @@ u16 xfrm_flowi_sport(struct flowi *fl)
case IPPROTO_ICMPV6:
port = htons(fl->fl_icmp_type);
break;
+#ifdef CONFIG_IPV6_MIP6
+ case IPPROTO_MH:
+ port = htons(fl->fl_mh_type);
+ break;
+#endif
default:
port = 0; /*XXX*/
}
@@ -608,6 +580,7 @@ struct xfrm_dst
struct rt6_info rt6;
} u;
struct dst_entry *route;
+ u32 genid;
u32 route_mtu_cached;
u32 child_mtu_cached;
u32 route_cookie;
@@ -659,6 +632,18 @@ secpath_reset(struct sk_buff *skb)
}
static inline int
+xfrm_addr_any(xfrm_address_t *addr, unsigned short family)
+{
+ switch (family) {
+ case AF_INET:
+ return addr->a4 == 0;
+ case AF_INET6:
+ return ipv6_addr_any((struct in6_addr *)&addr->a6);
+ }
+ return 0;
+}
+
+static inline int
__xfrm4_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x)
{
return (tmpl->saddr.a4 &&
@@ -692,8 +677,8 @@ static inline int xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *sk
{
if (sk && sk->sk_policy[XFRM_POLICY_IN])
return __xfrm_policy_check(sk, dir, skb, family);
-
- return (!xfrm_policy_list[dir] && !skb->sp) ||
+
+ return (!xfrm_policy_count[dir] && !skb->sp) ||
(skb->dst->flags & DST_NOPOLICY) ||
__xfrm_policy_check(sk, dir, skb, family);
}
@@ -713,7 +698,7 @@ extern int __xfrm_route_forward(struct sk_buff *skb, unsigned short family);
static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family)
{
- return !xfrm_policy_list[XFRM_POLICY_OUT] ||
+ return !xfrm_policy_count[XFRM_POLICY_OUT] ||
(skb->dst->flags & DST_NOXFRM) ||
__xfrm_route_forward(skb, family);
}
@@ -831,11 +816,36 @@ xfrm_state_addr_check(struct xfrm_state *x,
return 0;
}
+static __inline__ int
+xfrm_state_addr_flow_check(struct xfrm_state *x, struct flowi *fl,
+ unsigned short family)
+{
+ switch (family) {
+ case AF_INET:
+ return __xfrm4_state_addr_check(x,
+ (xfrm_address_t *)&fl->fl4_dst,
+ (xfrm_address_t *)&fl->fl4_src);
+ case AF_INET6:
+ return __xfrm6_state_addr_check(x,
+ (xfrm_address_t *)&fl->fl6_dst,
+ (xfrm_address_t *)&fl->fl6_src);
+ }
+ return 0;
+}
+
static inline int xfrm_state_kern(struct xfrm_state *x)
{
return atomic_read(&x->tunnel_users);
}
+static inline int xfrm_id_proto_match(u8 proto, u8 userproto)
+{
+ return (!userproto || proto == userproto ||
+ (userproto == IPSEC_PROTO_ANY && (proto == IPPROTO_AH ||
+ proto == IPPROTO_ESP ||
+ proto == IPPROTO_COMP)));
+}
+
/*
* xfrm algorithm information
*/
@@ -855,6 +865,7 @@ struct xfrm_algo_comp_info {
struct xfrm_algo_desc {
char *name;
+ char *compat;
u8 available:1;
union {
struct xfrm_algo_auth_info auth;
@@ -902,6 +913,25 @@ extern void xfrm_state_insert(struct xfrm_state *x);
extern int xfrm_state_add(struct xfrm_state *x);
extern int xfrm_state_update(struct xfrm_state *x);
extern struct xfrm_state *xfrm_state_lookup(xfrm_address_t *daddr, u32 spi, u8 proto, unsigned short family);
+extern struct xfrm_state *xfrm_state_lookup_byaddr(xfrm_address_t *daddr, xfrm_address_t *saddr, u8 proto, unsigned short family);
+#ifdef CONFIG_XFRM_SUB_POLICY
+extern int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src,
+ int n, unsigned short family);
+extern int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src,
+ int n, unsigned short family);
+#else
+static inline int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src,
+ int n, unsigned short family)
+{
+ return -ENOSYS;
+}
+
+static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src,
+ int n, unsigned short family)
+{
+ return -ENOSYS;
+}
+#endif
extern struct xfrm_state *xfrm_find_acq_byseq(u32 seq);
extern int xfrm_state_delete(struct xfrm_state *x);
extern void xfrm_state_flush(u8 proto);
@@ -917,12 +947,16 @@ extern int xfrm4_tunnel_register(struct xfrm_tunnel *handler);
extern int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler);
extern int xfrm6_rcv_spi(struct sk_buff *skb, u32 spi);
extern int xfrm6_rcv(struct sk_buff **pskb);
+extern int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
+ xfrm_address_t *saddr, u8 proto);
extern int xfrm6_tunnel_register(struct xfrm6_tunnel *handler);
extern int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler);
extern u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr);
extern void xfrm6_tunnel_free_spi(xfrm_address_t *saddr);
extern u32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr);
extern int xfrm6_output(struct sk_buff *skb);
+extern int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
+ u8 **prevhdr);
#ifdef CONFIG_XFRM
extern int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type);
@@ -947,27 +981,27 @@ static inline int xfrm_dst_lookup(struct xfrm_dst **dst, struct flowi *fl, unsig
#endif
struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp);
-extern int xfrm_policy_walk(int (*func)(struct xfrm_policy *, int, int, void*), void *);
+extern int xfrm_policy_walk(u8 type, int (*func)(struct xfrm_policy *, int, int, void*), void *);
int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl);
-struct xfrm_policy *xfrm_policy_bysel_ctx(int dir, struct xfrm_selector *sel,
+struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
+ struct xfrm_selector *sel,
struct xfrm_sec_ctx *ctx, int delete);
-struct xfrm_policy *xfrm_policy_byid(int dir, u32 id, int delete);
-void xfrm_policy_flush(void);
+struct xfrm_policy *xfrm_policy_byid(u8, int dir, u32 id, int delete);
+void xfrm_policy_flush(u8 type);
u32 xfrm_get_acqseq(void);
void xfrm_alloc_spi(struct xfrm_state *x, u32 minspi, u32 maxspi);
struct xfrm_state * xfrm_find_acq(u8 mode, u32 reqid, u8 proto,
xfrm_address_t *daddr, xfrm_address_t *saddr,
int create, unsigned short family);
-extern void xfrm_policy_flush(void);
+extern void xfrm_policy_flush(u8 type);
extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol);
-extern int xfrm_flush_bundles(void);
-extern void xfrm_flush_all_bundles(void);
-extern int xfrm_bundle_ok(struct xfrm_dst *xdst, struct flowi *fl, int family);
+extern int xfrm_bundle_ok(struct xfrm_dst *xdst, struct flowi *fl, int family, int strict);
extern void xfrm_init_pmtu(struct dst_entry *dst);
extern wait_queue_head_t km_waitq;
extern int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, u16 sport);
extern void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 pid);
+extern int km_report(u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);
extern void xfrm_input_init(void);
extern int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, u32 *spi, u32 *seq);
@@ -984,11 +1018,13 @@ extern struct xfrm_algo_desc *xfrm_aalg_get_byname(char *name, int probe);
extern struct xfrm_algo_desc *xfrm_ealg_get_byname(char *name, int probe);
extern struct xfrm_algo_desc *xfrm_calg_get_byname(char *name, int probe);
-struct crypto_tfm;
-typedef void (icv_update_fn_t)(struct crypto_tfm *, struct scatterlist *, unsigned int);
+struct hash_desc;
+struct scatterlist;
+typedef int (icv_update_fn_t)(struct hash_desc *, struct scatterlist *,
+ unsigned int);
-extern void skb_icv_walk(const struct sk_buff *skb, struct crypto_tfm *tfm,
- int offset, int len, icv_update_fn_t icv_update);
+extern int skb_icv_walk(const struct sk_buff *skb, struct hash_desc *tfm,
+ int offset, int len, icv_update_fn_t icv_update);
static inline int xfrm_addr_cmp(xfrm_address_t *a, xfrm_address_t *b,
int family)
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-26 03:15:04 +0000