1 files changed, 25 insertions, 2 deletions

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 1cdb87912137..487abca3ca6f 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -144,6 +144,9 @@ struct xfrm_state
          * transformer. */
         struct xfrm_type        *type;
 
+        /* Security context */
+        struct xfrm_sec_ctx     *security;
+
         /* Private data of this transformer, format is opaque,
          * interpreted by xfrm_type methods. */
         void                    *data;
@@ -298,6 +301,7 @@ struct xfrm_policy
         __u8                    flags;
         __u8                    dead;
         __u8                    xfrm_nr;
+        struct xfrm_sec_ctx     *security;
         struct xfrm_tmpl        xfrm_vec[XFRM_MAX_DEPTH];
 };
 
@@ -510,6 +514,25 @@ xfrm_selector_match(struct xfrm_selector *sel, struct flowi *fl,
         return 0;
 }
 
+#ifdef CONFIG_SECURITY_NETWORK_XFRM
+/*      If neither has a context --> match
+ *      Otherwise, both must have a context and the sids, doi, alg must match
+ */
+static inline int xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2)
+{
+        return ((!s1 && !s2) ||
+                (s1 && s2 &&
+                 (s1->ctx_sid == s2->ctx_sid) &&
+                 (s1->ctx_doi == s2->ctx_doi) &&
+                 (s1->ctx_alg == s2->ctx_alg)));
+}
+#else
+static inline int xfrm_sec_ctx_match(struct xfrm_sec_ctx *s1, struct xfrm_sec_ctx *s2)
+{
+        return 1;
+}
+#endif
+
 /* A struct encoding bundle of transformations to apply to some set of flow.
  *
  * dst->child points to the next element of bundle.
@@ -878,8 +901,8 @@ static inline int xfrm_dst_lookup(struct xfrm_dst **dst, struct flowi *fl, unsig
 struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp);
 extern int xfrm_policy_walk(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(int dir, struct xfrm_selector *sel,
-                                      int delete);
+struct xfrm_policy *xfrm_policy_bysel_ctx(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);
 u32 xfrm_get_acqseq(void);