1 files changed, 49 insertions, 0 deletions

diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index e9a51fe46aa..b47c0fc55d4 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -4,9 +4,12 @@
 #include <linux/list.h>
 #include <linux/backing-dev.h>
 #include <linux/wait.h>
+#include <linux/nfs_xdr.h>
+#include <linux/sunrpc/xprt.h>
 
 #include <asm/atomic.h>
 
+struct nfs4_session;
 struct nfs_iostats;
 struct nlm_host;
 
@@ -66,6 +69,10 @@ struct nfs_client {
         unsigned char           cl_id_uniquifier;
 #endif /* CONFIG_NFS_V4 */
 
+#ifdef CONFIG_NFS_V4_1
+        struct nfs4_session     *cl_session;    /* sharred session */
+#endif /* CONFIG_NFS_V4_1 */
+
 #ifdef CONFIG_NFS_FSCACHE
         struct fscache_cookie   *fscache;       /* client index cache cookie */
 #endif
@@ -146,4 +153,46 @@ struct nfs_server {
 #define NFS_CAP_ACLS            (1U << 3)
 #define NFS_CAP_ATOMIC_OPEN     (1U << 4)
 
+
+/* maximum number of slots to use */
+#define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE
+
+#if defined(CONFIG_NFS_V4_1)
+
+/* Sessions */
+#define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long)))
+struct nfs4_slot_table {
+        struct nfs4_slot *slots;                /* seqid per slot */
+        unsigned long   used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */
+        spinlock_t      slot_tbl_lock;
+        struct rpc_wait_queue   slot_tbl_waitq; /* allocators may wait here */
+        int             max_slots;              /* # slots in table */
+        int             highest_used_slotid;    /* sent to server on each SEQ.
+                                                 * op for dynamic resizing */
+};
+
+static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp)
+{
+        return sp - tbl->slots;
+}
+
+/*
+ * Session related parameters
+ */
+struct nfs4_session {
+        struct nfs4_sessionid           sess_id;
+        u32                             flags;
+        unsigned long                   session_state;
+        u32                             hash_alg;
+        u32                             ssv_len;
+
+        /* The fore and back channel */
+        struct nfs4_channel_attrs       fc_attrs;
+        struct nfs4_slot_table          fc_slot_table;
+        struct nfs4_channel_attrs       bc_attrs;
+                                        /* back channel has one slot */
+        struct nfs_client               *clp;
+};
+
+#endif /* CONFIG_NFS_V4_1 */
 #endif