LU-5092 nodemap: save nodemaps to targets for caching

[fs/lustre-release.git] / lustre / ptlrpc / nodemap_internal.h

diff --git a/lustre/ptlrpc/nodemap_internal.h b/lustre/ptlrpc/nodemap_internal.h
index 86c55b0..5d75fd7 100644 (file)
--- a/lustre/ptlrpc/nodemap_internal.h
+++ b/lustre/ptlrpc/nodemap_internal.h
@@ -33,7 +33,13 @@
 #include <lustre_nodemap.h>
 #include <interval_tree.h>
 
-#define MODULE_STRING "nodemap"
+#define DEFAULT_NODEMAP "default"
+
+/* Turn on proc debug interface to allow OSS and
+ * MDS nodes to configure nodemap independently of
+ * MGS (since the nodemap distribution is not written
+ * yet */
+#define NODEMAP_PROC_DEBUG 1
 
 /* Default nobody uid and gid values */
 
@@ -72,36 +78,38 @@ struct lu_idmap {
        struct rb_node  id_fs_to_client;
 };
 
-struct nodemap_range_tree {
-       struct interval_node *nmrt_range_interval_root;
-       unsigned int nmrt_range_highest_id;
+/* first 4 bits of the nodemap_id is the index type */
+struct nodemap_key {
+       __u32 nk_nodemap_id;
+       union {
+               __u32 nk_range_id;
+               __u32 nk_id_client;
+               __u32 nk_unused;
+       };
 };
 
-struct nodemap_config {
-       /* Highest numerical lu_nodemap.nm_id defined */
-       unsigned int nmc_nodemap_highest_id;
-
-       /* Simple flag to determine if nodemaps are active */
-       bool nmc_nodemap_is_active;
+enum nodemap_idx_type {
+       NODEMAP_EMPTY_IDX = 0,          /* index created with blank record */
+       NODEMAP_CLUSTER_IDX = 1,        /* a nodemap cluster of nodes */
+       NODEMAP_RANGE_IDX = 2,          /* nid range assigned to a nm cluster */
+       NODEMAP_UIDMAP_IDX = 3,         /* uid map assigned to a nm cluster */
+       NODEMAP_GIDMAP_IDX = 4,         /* gid map assigned to a nm cluster */
+       NODEMAP_GLOBAL_IDX = 15,        /* stores nodemap activation status */
+};
 
-       /* Pointer to default nodemap as it is needed more often */
-       struct lu_nodemap *nmc_default_nodemap;
+#define NM_TYPE_MASK 0x0FFFFFFF
+#define NM_TYPE_SHIFT 28
 
-       /**
-        * Lock required to access the range tree.
-        */
-       struct rw_semaphore nmc_range_tree_lock;
-       struct nodemap_range_tree nmc_range_tree;
+static inline enum nodemap_idx_type nm_idx_get_type(unsigned int id)
+{
+       return id >> NM_TYPE_SHIFT;
+}
 
-       /**
-        * Hash keyed on nodemap name containing all
-        * nodemaps
-        */
-       struct cfs_hash *nmc_nodemap_hash;
-};
+static inline __u32 nm_idx_set_type(unsigned int id, enum nodemap_idx_type t)
+{
+       return (id & NM_TYPE_MASK) | (t << NM_TYPE_SHIFT);
+}
 
-struct nodemap_config *nodemap_config_alloc(void);
-void nodemap_config_dealloc(struct nodemap_config *config);
 void nodemap_config_set_active(struct nodemap_config *config);
 struct lu_nodemap *nodemap_create(const char *name,
                                  struct nodemap_config *config,
@@ -118,7 +126,8 @@ struct lu_nid_range *nodemap_range_find(lnet_nid_t start_nid,
                                        lnet_nid_t end_nid);
 struct lu_nid_range *range_create(struct nodemap_range_tree *nm_range_tree,
                                  lnet_nid_t start_nid, lnet_nid_t end_nid,
-                                 struct lu_nodemap *nodemap);
+                                 struct lu_nodemap *nodemap,
+                                 unsigned int range_id);
 void range_destroy(struct lu_nid_range *range);
 int range_insert(struct nodemap_range_tree *nm_range_tree,
                 struct lu_nid_range *data);
@@ -147,11 +156,24 @@ void nm_member_delete_list(struct lu_nodemap *nodemap);
 struct lu_nodemap *nodemap_classify_nid(lnet_nid_t nid);
 void nm_member_reclassify_nodemap(struct lu_nodemap *nodemap);
 void nm_member_revoke_locks(struct lu_nodemap *nodemap);
+void nm_member_revoke_locks_always(struct lu_nodemap *nodemap);
 void nm_member_revoke_all(void);
 
+int nodemap_add_idmap_helper(struct lu_nodemap *nodemap,
+                            enum nodemap_id_type id_type,
+                            const __u32 map[2]);
+int nodemap_add_range_helper(struct nodemap_config *config,
+                            struct lu_nodemap *nodemap,
+                            const lnet_nid_t nid[2],
+                            unsigned int range_id);
+
 struct rb_node *nm_rb_next_postorder(const struct rb_node *node);
 struct rb_node *nm_rb_first_postorder(const struct rb_root *root);
+void nodemap_getref(struct lu_nodemap *nodemap);
 void nodemap_putref(struct lu_nodemap *nodemap);
+int nm_hash_list_cb(struct cfs_hash *hs, struct cfs_hash_bd *bd,
+                   struct hlist_node *hnode,
+                   void *nodemap_list_head);
 
 #define nm_rbtree_postorder_for_each_entry_safe(pos, n,                        \
                                                root, field)            \
@@ -166,4 +188,18 @@ void nodemap_putref(struct lu_nodemap *nodemap);
                n = (pos && nm_rb_next_postorder(&pos->field)) ?        \
                rb_entry(nm_rb_next_postorder(&pos->field),             \
                typeof(*pos), field) : NULL)
+
+int nodemap_idx_nodemap_add(const struct lu_nodemap *nodemap);
+int nodemap_idx_nodemap_update(const struct lu_nodemap *nodemap);
+int nodemap_idx_nodemap_del(const struct lu_nodemap *nodemap);
+int nodemap_idx_idmap_add(const struct lu_nodemap *nodemap,
+                         enum nodemap_id_type id_type,
+                         const __u32 map[2]);
+int nodemap_idx_idmap_del(const struct lu_nodemap *nodemap,
+                         enum nodemap_id_type id_type,
+                         const __u32 map[2]);
+int nodemap_idx_range_add(const struct lu_nid_range *range,
+                         const lnet_nid_t nid[2]);
+int nodemap_idx_range_del(const struct lu_nid_range *range);
+int nodemap_idx_nodemap_activate(bool value);
 #endif  /* _NODEMAP_INTERNAL_H */