LU-11376 lmv: new foreign LMV format

[fs/lustre-release.git] / lustre / include / uapi / linux / lustre / lustre_user.h

diff --git a/lustre/include/uapi/linux/lustre/lustre_user.h b/lustre/include/uapi/linux/lustre/lustre_user.h
index 3329aae..29e5260 100644 (file)
--- a/lustre/include/uapi/linux/lustre/lustre_user.h
+++ b/lustre/include/uapi/linux/lustre/lustre_user.h
@@ -630,7 +630,7 @@ struct lov_user_md_v3 {           /* LOV EA user data (host-endian) */
 struct lov_foreign_md {
        __u32 lfm_magic;        /* magic number = LOV_MAGIC_FOREIGN */
        __u32 lfm_length;       /* length of lfm_value */
-       __u32 lfm_type;         /* type, see LOV_FOREIGN_TYPE_ */
+       __u32 lfm_type;         /* type, see LU_FOREIGN_TYPE_ */
        __u32 lfm_flags;        /* flags, type specific */
        char lfm_value[];
 };
@@ -799,19 +799,22 @@ enum lmv_hash_type {
 
 extern char *mdt_hash_name[LMV_HASH_TYPE_MAX];
 
-/**
- * LOV foreign types
- **/
-#define LOV_FOREIGN_TYPE_NONE 0
-#define LOV_FOREIGN_TYPE_DAOS 0xda05
-#define LOV_FOREIGN_TYPE_UNKNOWN UINT32_MAX
-
 struct lustre_foreign_type {
        uint32_t lft_type;
        const char *lft_name;
 };
 
-extern struct lustre_foreign_type lov_foreign_type[];
+/**
+ * LOV/LMV foreign types
+ **/
+enum lustre_foreign_types {
+       LU_FOREIGN_TYPE_NONE = 0,
+       LU_FOREIGN_TYPE_DAOS = 0xda05,
+       /* must be the max/last one */
+       LU_FOREIGN_TYPE_UNKNOWN = 0xffffffff,
+};
+
+extern struct lustre_foreign_type lu_foreign_types[];
 
 /* Got this according to how get LOV_MAX_STRIPE_COUNT, see above,
  * (max buffer size - lmv+rpc header) / sizeof(struct lmv_user_mds_data) */
@@ -830,6 +833,16 @@ struct lmv_user_md_v1 {
        struct  lmv_user_mds_data  lum_objects[0];
 } __attribute__((packed));
 
+static inline __u32 lmv_foreign_to_md_stripes(__u32 size)
+{
+       if (size <= sizeof(struct lmv_user_md))
+               return 0;
+
+       size -= sizeof(struct lmv_user_md);
+       return (size + sizeof(struct lmv_user_mds_data) - 1) /
+              sizeof(struct lmv_user_mds_data);
+}
+
 static inline int lmv_user_md_size(int stripes, int lmm_magic)
 {
        int size = sizeof(struct lmv_user_md);