libceph: introduce ceph_osd_request_target, calc_target()

Introduce ceph_osd_request_target, containing all mapping-related
fields of ceph_osd_request and calc_target() for calculating mappings
and populating it.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

3 files changed, 62 insertions, 0 deletions

diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index 63854a8df183..48806ee4488d 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -24,6 +24,8 @@ typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *,
                                      struct ceph_msg *);
 typedef void (*ceph_osdc_unsafe_callback_t)(struct ceph_osd_request *, bool);
 
+#define CEPH_HOMELESS_OSD       -1
+
 /* a given osd we're communicating with */
 struct ceph_osd {
         atomic_t o_ref;
@@ -118,6 +120,27 @@ struct ceph_osd_req_op {
         };
 };
 
+struct ceph_osd_request_target {
+        struct ceph_object_id base_oid;
+        struct ceph_object_locator base_oloc;
+        struct ceph_object_id target_oid;
+        struct ceph_object_locator target_oloc;
+
+        struct ceph_pg pgid;
+        u32 pg_num;
+        u32 pg_num_mask;
+        struct ceph_osds acting;
+        struct ceph_osds up;
+        int size;
+        int min_size;
+        bool sort_bitwise;
+
+        unsigned int flags;                /* CEPH_OSD_FLAG_* */
+        bool paused;
+
+        int osd;
+};
+
 /* an in-flight request */
 struct ceph_osd_request {
         u64             r_tid;              /* unique for this client */
diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
index 989294d0b8d2..420bb7968b25 100644
--- a/include/linux/ceph/osdmap.h
+++ b/include/linux/ceph/osdmap.h
@@ -28,6 +28,7 @@ int ceph_pg_compare(const struct ceph_pg *lhs, const struct ceph_pg *rhs);
 
 #define CEPH_POOL_FLAG_HASHPSPOOL       (1ULL << 0) /* hash pg seed and pool id
                                                        together */
+#define CEPH_POOL_FLAG_FULL             (1ULL << 1) /* pool is full */
 
 struct ceph_pg_pool_info {
         struct rb_node node;
@@ -62,6 +63,22 @@ struct ceph_object_locator {
         s64 pool;
 };
 
+static inline void ceph_oloc_init(struct ceph_object_locator *oloc)
+{
+        oloc->pool = -1;
+}
+
+static inline bool ceph_oloc_empty(const struct ceph_object_locator *oloc)
+{
+        return oloc->pool == -1;
+}
+
+static inline void ceph_oloc_copy(struct ceph_object_locator *dest,
+                                  const struct ceph_object_locator *src)
+{
+        dest->pool = src->pool;
+}
+
 /*
  * Maximum supported by kernel client object name length
  *
@@ -227,6 +244,23 @@ static inline void ceph_osds_init(struct ceph_osds *set)
 
 void ceph_osds_copy(struct ceph_osds *dest, const struct ceph_osds *src);
 
+bool ceph_is_new_interval(const struct ceph_osds *old_acting,
+                          const struct ceph_osds *new_acting,
+                          const struct ceph_osds *old_up,
+                          const struct ceph_osds *new_up,
+                          int old_size,
+                          int new_size,
+                          int old_min_size,
+                          int new_min_size,
+                          u32 old_pg_num,
+                          u32 new_pg_num,
+                          bool old_sort_bitwise,
+                          bool new_sort_bitwise,
+                          const struct ceph_pg *pgid);
+bool ceph_osds_changed(const struct ceph_osds *old_acting,
+                       const struct ceph_osds *new_acting,
+                       bool any_change);
+
 /* calculate mapping of a file extent to an object */
 extern int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
                                          u64 off, u64 len,
diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h
index 913c87c26d33..f28ed864e682 100644
--- a/include/linux/ceph/rados.h
+++ b/include/linux/ceph/rados.h
@@ -153,6 +153,11 @@ extern const char *ceph_osd_state_name(int s);
 #define CEPH_OSDMAP_NOIN     (1<<8)  /* block osd auto mark-in */
 #define CEPH_OSDMAP_NOBACKFILL (1<<9) /* block osd backfill */
 #define CEPH_OSDMAP_NORECOVER (1<<10) /* block osd recovery and backfill */
+#define CEPH_OSDMAP_NOSCRUB  (1<<11) /* block periodic scrub */
+#define CEPH_OSDMAP_NODEEP_SCRUB (1<<12) /* block periodic deep-scrub */
+#define CEPH_OSDMAP_NOTIERAGENT (1<<13) /* disable tiering agent */
+#define CEPH_OSDMAP_NOREBALANCE (1<<14) /* block osd backfill unless pg is degraded */
+#define CEPH_OSDMAP_SORTBITWISE (1<<15) /* use bitwise hobject_t sort */
 
 /*
  * The error code to return when an OSD can't handle a write