#define _NFSD4_STATE_H
#include <linux/list.h>
+#include <linux/kref.h>
+#include <linux/sunrpc/clnt.h>
#define NFS4_OPAQUE_LIMIT 1024
typedef struct {
#define ZERO_STATEID(stateid) (!memcmp((stateid), &zerostateid, sizeof(stateid_t)))
#define ONE_STATEID(stateid) (!memcmp((stateid), &onestateid, sizeof(stateid_t)))
+/* Delegation recall states */
+#define NFS4_NO_RECALL 0x000
+#define NFS4_RECALL_IN_PROGRESS 0x001
+#define NFS4_RECALL_COMPLETE 0x002
+#define NFS4_REAP_DELEG 0x004
+
+struct nfs4_cb_recall {
+ u32 cbr_ident;
+ int cbr_trunc;
+ stateid_t cbr_stateid;
+ u32 cbr_fhlen;
+ u32 cbr_fhval[NFS4_FHSIZE];
+ struct nfs4_delegation *cbr_dp;
+};
+
+struct nfs4_delegation {
+ struct list_head dl_del_perfile; /* nfs4_file->fi_del_perfile */
+ struct list_head dl_del_perclnt; /* nfs4_client->cl_del_perclnt*/
+ struct list_head dl_recall_lru; /* delegation recalled */
+ atomic_t dl_recall_cnt; /* resend cb_recall only once */
+ atomic_t dl_count; /* ref count */
+ atomic_t dl_state; /* recall state */
+ struct nfs4_client *dl_client;
+ struct nfs4_file *dl_file;
+ struct file_lock *dl_flock;
+ struct nfs4_stateid *dl_stp;
+ u32 dl_type;
+ time_t dl_time;
+ struct nfs4_cb_recall dl_recall;
+};
+
+#define dl_stateid dl_recall.cbr_stateid
+#define dl_fhlen dl_recall.cbr_fhlen
+#define dl_fhval dl_recall.cbr_fhval
+
+/* client delegation callback info */
+struct nfs4_callback {
+ /* SETCLIENTID info */
+ u32 cb_parsed; /* addr parsed */
+ u32 cb_addr;
+ unsigned short cb_port;
+ u32 cb_prog;
+ u32 cb_ident;
+ /* RPC client info */
+ atomic_t cb_set; /* successful CB_NULL call */
+ struct rpc_program cb_program;
+ struct rpc_stat cb_stat;
+ struct rpc_clnt * cb_client;
+};
+
/*
* struct nfs4_client - one per client. Clientids live here.
* o Each nfs4_client is hashed by clientid.
struct list_head cl_idhash; /* hash by cl_clientid.id */
struct list_head cl_strhash; /* hash by cl_name */
struct list_head cl_perclient; /* list: stateowners */
+ struct list_head cl_del_perclnt; /* list: delegations */
struct list_head cl_lru; /* tail queue */
struct xdr_netobj cl_name; /* id generated by client */
nfs4_verifier cl_verifier; /* generated by client */
struct svc_cred cl_cred; /* setclientid principal */
clientid_t cl_clientid; /* generated by server */
nfs4_verifier cl_confirm; /* generated by server */
+ struct nfs4_callback cl_callback; /* callback info */
+ time_t cl_first_state; /* first state aquisition*/
+ atomic_t cl_count; /* ref count */
+};
+
+/* 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
+ * from non-volitile storage) upon reboot.
+ */
+struct nfs4_client_reclaim {
+ struct list_head cr_strhash; /* hash by cr_name */
+ struct xdr_netobj cr_name; /* id generated by client */
+ time_t cr_first_state; /* first state aquisition */
+ u32 cr_expired; /* boolean: lease expired? */
};
static inline void
* reaped by laundramat thread after lease period.
*/
struct nfs4_stateowner {
+ struct kref so_ref;
struct list_head so_idhash; /* hash by so_id */
struct list_head so_strhash; /* hash by op_name */
struct list_head so_perclient; /* nfs4_client->cl_perclient */
struct nfs4_file {
struct list_head fi_hash; /* hash by "struct inode *" */
struct list_head fi_perfile; /* list: nfs4_stateid */
+ struct list_head fi_del_perfile; /* list: nfs4_delegation */
struct inode *fi_inode;
u32 fi_id; /* used with stateowner->so_id
* for stateid_hashtbl hash */
struct nfs4_stateowner * st_stateowner;
struct nfs4_file * st_file;
stateid_t st_stateid;
- struct file st_vfs_file;
+ struct file * st_vfs_file;
int st_vfs_set;
unsigned long st_access_bmap;
unsigned long st_deny_bmap;
#define CONFIRM 0x00000002
#define OPEN_STATE 0x00000004
#define LOCK_STATE 0x00000008
-#define RDWR_STATE 0x00000010
-#define CLOSE_STATE 0x00000020
+#define RD_STATE 0x00000010
+#define WR_STATE 0x00000020
+#define CLOSE_STATE 0x00000040
+#define DELEG_RET 0x00000080
#define seqid_mutating_err(err) \
(((err) != nfserr_stale_clientid) && \
extern time_t nfs4_laundromat(void);
extern int nfsd4_renew(clientid_t *clid);
extern int nfs4_preprocess_stateid_op(struct svc_fh *current_fh,
- stateid_t *stateid, int flags, struct nfs4_stateid **stpp);
+ stateid_t *stateid, int flags);
extern int nfs4_share_conflict(struct svc_fh *current_fh,
unsigned int deny_type);
extern void nfs4_lock_state(void);
extern void nfs4_unlock_state(void);
extern int nfs4_in_grace(void);
-extern int nfs4_in_no_grace(void);
+extern int 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 void nfsd4_probe_callback(struct nfs4_client *clp);
+extern int nfsd4_cb_recall(struct nfs4_delegation *dp);
+
+static inline void
+nfs4_put_stateowner(struct nfs4_stateowner *so)
+{
+ kref_put(&so->so_ref, nfs4_free_stateowner);
+}
+
+static inline void
+nfs4_get_stateowner(struct nfs4_stateowner *so)
+{
+ kref_get(&so->so_ref);
+}
+
#endif /* NFSD4_STATE_H */
git://git.onelab.eu / linux-2.6.git / blobdiff