1 files changed, 29 insertions, 0 deletions

diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index 0fb077d68441..82fbb758e28f 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -27,6 +27,22 @@ struct xfrm_id
         __u8            proto;
 };
 
+struct xfrm_sec_ctx {
+        __u8    ctx_doi;
+        __u8    ctx_alg;
+        __u16   ctx_len;
+        __u32   ctx_sid;
+        char    ctx_str[0];
+};
+
+/* Security Context Domains of Interpretation */
+#define XFRM_SC_DOI_RESERVED 0
+#define XFRM_SC_DOI_LSM 1
+
+/* Security Context Algorithms */
+#define XFRM_SC_ALG_RESERVED 0
+#define XFRM_SC_ALG_SELINUX 1
+
 /* Selector, used as selector both on policy rules (SPD) and SAs. */
 
 struct xfrm_selector
@@ -146,6 +162,18 @@ enum {
 
 #define XFRM_NR_MSGTYPES (XFRM_MSG_MAX + 1 - XFRM_MSG_BASE)
 
+/*
+ * Generic LSM security context for comunicating to user space
+ * NOTE: Same format as sadb_x_sec_ctx
+ */
+struct xfrm_user_sec_ctx {
+        __u16                   len;
+        __u16                   exttype;
+        __u8                    ctx_alg;  /* LSMs: e.g., selinux == 1 */
+        __u8                    ctx_doi;
+        __u16                   ctx_len;
+};
+
 struct xfrm_user_tmpl {
         struct xfrm_id          id;
         __u16                   family;
@@ -176,6 +204,7 @@ enum xfrm_attr_type_t {
         XFRMA_TMPL,             /* 1 or more struct xfrm_user_tmpl */
         XFRMA_SA,
         XFRMA_POLICY,
+        XFRMA_SEC_CTX,          /* struct xfrm_sec_ctx */
         __XFRMA_MAX
 
 #define XFRMA_MAX (__XFRMA_MAX - 1)