+ struct rpc_cred * cb_cred;
+};
+
+/* Maximum number of slots per session. 128 is useful for long haul TCP */
+#define NFSD_MAX_SLOTS_PER_SESSION 128
+/* Maximum number of pages per slot cache entry */
+#define NFSD_PAGES_PER_SLOT 1
+/* Maximum number of operations per session compound */
+#define NFSD_MAX_OPS_PER_COMPOUND 16
+
+struct nfsd4_cache_entry {
+ __be32 ce_status;
+ struct kvec ce_datav; /* encoded NFSv4.1 data in rq_res.head[0] */
+ struct page *ce_respages[NFSD_PAGES_PER_SLOT + 1];
+ int ce_cachethis;
+ short ce_resused;
+ int ce_opcnt;
+ int ce_rpchdrlen;
+};
+
+struct nfsd4_slot {
+ bool sl_inuse;
+ u32 sl_seqid;
+ struct nfsd4_cache_entry sl_cache_entry;
+};
+
+struct nfsd4_session {
+ struct kref se_ref;
+ struct list_head se_hash; /* hash by sessionid */
+ struct list_head se_perclnt;
+ u32 se_flags;
+ struct nfs4_client *se_client; /* for expire_client */
+ struct nfs4_sessionid se_sessionid;
+ u32 se_fmaxreq_sz;
+ u32 se_fmaxresp_sz;
+ u32 se_fmaxresp_cached;
+ u32 se_fmaxops;
+ u32 se_fnumslots;
+ struct nfsd4_slot se_slots[]; /* forward channel slots */
+};
+
+static inline void
+nfsd4_put_session(struct nfsd4_session *ses)
+{
+ extern void free_session(struct kref *kref);
+ kref_put(&ses->se_ref, free_session);
+}
+
+static inline void
+nfsd4_get_session(struct nfsd4_session *ses)
+{
+ kref_get(&ses->se_ref);
+}
+
+/* formatted contents of nfs4_sessionid */
+struct nfsd4_sessionid {
+ clientid_t clientid;
+ u32 sequence;
+ u32 reserved;