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-rw-r--r--fs/nfsd/state.h47
1 files changed, 38 insertions, 9 deletions
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index fefeae27f25..006c84230c7 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -70,6 +70,16 @@ struct nfsd4_cb_sequence {
struct nfs4_client *cbs_clp;
};
+struct nfs4_rpc_args {
+ void *args_op;
+ struct nfsd4_cb_sequence args_seq;
+};
+
+struct nfsd4_callback {
+ struct nfs4_rpc_args cb_args;
+ struct work_struct cb_work;
+};
+
struct nfs4_delegation {
struct list_head dl_perfile;
struct list_head dl_perclnt;
@@ -86,6 +96,7 @@ struct nfs4_delegation {
stateid_t dl_stateid;
struct knfsd_fh dl_fh;
int dl_retries;
+ struct nfsd4_callback dl_recall;
};
/* client delegation callback info */
@@ -96,9 +107,7 @@ struct nfs4_cb_conn {
u32 cb_prog;
u32 cb_minorversion;
u32 cb_ident; /* minorversion 0 only */
- /* RPC client info */
- atomic_t cb_set; /* successful CB_NULL call */
- struct rpc_clnt * cb_client;
+ struct svc_xprt *cb_xprt; /* minorversion 1 only */
};
/* Maximum number of slots per session. 160 is useful for long haul TCP */
@@ -157,7 +166,7 @@ struct nfsd4_session {
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_client *se_client;
struct nfs4_sessionid se_sessionid;
struct nfsd4_channel_attrs se_fchannel;
struct nfsd4_channel_attrs se_bchannel;
@@ -212,25 +221,41 @@ struct nfs4_client {
struct svc_cred cl_cred; /* setclientid principal */
clientid_t cl_clientid; /* generated by server */
nfs4_verifier cl_confirm; /* generated by server */
- struct nfs4_cb_conn cl_cb_conn; /* callback info */
- atomic_t cl_count; /* ref count */
u32 cl_firststate; /* recovery dir creation */
+ /* for v4.0 and v4.1 callbacks: */
+ struct nfs4_cb_conn cl_cb_conn;
+ struct rpc_clnt *cl_cb_client;
+ atomic_t cl_cb_set;
+
/* for nfs41 */
struct list_head cl_sessions;
struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */
u32 cl_exchange_flags;
struct nfs4_sessionid cl_sessionid;
+ /* number of rpc's in progress over an associated session: */
+ atomic_t cl_refcount;
/* for nfs41 callbacks */
/* We currently support a single back channel with a single slot */
unsigned long cl_cb_slot_busy;
u32 cl_cb_seq_nr;
- struct svc_xprt *cl_cb_xprt; /* 4.1 callback transport */
struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */
/* wait here for slots */
};
+static inline void
+mark_client_expired(struct nfs4_client *clp)
+{
+ clp->cl_time = 0;
+}
+
+static inline bool
+is_client_expired(struct nfs4_client *clp)
+{
+ return clp->cl_time == 0;
+}
+
/* struct nfs4_client_reset
* one per old client. Populates reset_str_hashtbl. Filled from conf_id_hashtbl
* upon lease reset, or from upcall to state_daemon (to read in state
@@ -377,11 +402,14 @@ extern void nfs4_lock_state(void);
extern void nfs4_unlock_state(void);
extern int nfs4_in_grace(void);
extern __be32 nfs4_check_open_reclaim(clientid_t *clid);
-extern void put_nfs4_client(struct nfs4_client *clp);
extern void nfs4_free_stateowner(struct kref *kref);
extern int set_callback_cred(void);
-extern void nfsd4_probe_callback(struct nfs4_client *clp);
+extern void nfsd4_probe_callback(struct nfs4_client *clp, struct nfs4_cb_conn *);
+extern void nfsd4_do_callback_rpc(struct work_struct *);
extern void nfsd4_cb_recall(struct nfs4_delegation *dp);
+extern int nfsd4_create_callback_queue(void);
+extern void nfsd4_destroy_callback_queue(void);
+extern void nfsd4_set_callback_client(struct nfs4_client *, struct rpc_clnt *);
extern void nfs4_put_delegation(struct nfs4_delegation *dp);
extern __be32 nfs4_make_rec_clidname(char *clidname, struct xdr_netobj *clname);
extern void nfsd4_init_recdir(char *recdir_name);
@@ -392,6 +420,7 @@ extern int nfs4_has_reclaimed_state(const char *name, bool use_exchange_id);
extern void nfsd4_recdir_purge_old(void);
extern int nfsd4_create_clid_dir(struct nfs4_client *clp);
extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
+extern void release_session_client(struct nfsd4_session *);
static inline void
nfs4_put_stateowner(struct nfs4_stateowner *so)