diff options
Diffstat (limited to 'fs/nfs/callback.h')
| -rw-r--r-- | fs/nfs/callback.h | 68 |
1 files changed, 61 insertions, 7 deletions
diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h index e110e286a26..07baa8254ca 100644 --- a/fs/nfs/callback.h +++ b/fs/nfs/callback.h @@ -20,13 +20,24 @@ enum nfs4_callback_procnum { enum nfs4_callback_opnum { OP_CB_GETATTR = 3, OP_CB_RECALL = 4, +/* Callback operations new to NFSv4.1 */ + OP_CB_LAYOUTRECALL = 5, + OP_CB_NOTIFY = 6, + OP_CB_PUSH_DELEG = 7, + OP_CB_RECALL_ANY = 8, + OP_CB_RECALLABLE_OBJ_AVAIL = 9, + OP_CB_RECALL_SLOT = 10, + OP_CB_SEQUENCE = 11, + OP_CB_WANTS_CANCELLED = 12, + OP_CB_NOTIFY_LOCK = 13, + OP_CB_NOTIFY_DEVICEID = 14, OP_CB_ILLEGAL = 10044, }; struct cb_compound_hdr_arg { unsigned int taglen; const char *tag; - unsigned int callback_ident; + unsigned int minorversion; unsigned nops; }; @@ -59,16 +70,59 @@ struct cb_recallargs { uint32_t truncate; }; +#if defined(CONFIG_NFS_V4_1) + +struct referring_call { + uint32_t rc_sequenceid; + uint32_t rc_slotid; +}; + +struct referring_call_list { + struct nfs4_sessionid rcl_sessionid; + uint32_t rcl_nrefcalls; + struct referring_call *rcl_refcalls; +}; + +struct cb_sequenceargs { + struct sockaddr *csa_addr; + struct nfs4_sessionid csa_sessionid; + uint32_t csa_sequenceid; + uint32_t csa_slotid; + uint32_t csa_highestslotid; + uint32_t csa_cachethis; + uint32_t csa_nrclists; + struct referring_call_list *csa_rclists; +}; + +struct cb_sequenceres { + __be32 csr_status; + struct nfs4_sessionid csr_sessionid; + uint32_t csr_sequenceid; + uint32_t csr_slotid; + uint32_t csr_highestslotid; + uint32_t csr_target_highestslotid; +}; + +extern unsigned nfs4_callback_sequence(struct cb_sequenceargs *args, + struct cb_sequenceres *res); + +#endif /* CONFIG_NFS_V4_1 */ + extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res); extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy); #ifdef CONFIG_NFS_V4 -extern int nfs_callback_up(void); -extern void nfs_callback_down(void); -#else -#define nfs_callback_up() (0) -#define nfs_callback_down() do {} while(0) -#endif +extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt); +extern void nfs_callback_down(int minorversion); +#endif /* CONFIG_NFS_V4 */ + +/* + * nfs41: Callbacks are expected to not cause substantial latency, + * so we limit their concurrency to 1 by setting up the maximum number + * of slots for the backchannel. + */ +#define NFS41_BC_MIN_CALLBACKS 1 +#define NFS41_BC_MAX_CALLBACKS 1 extern unsigned int nfs_callback_set_tcpport; extern unsigned short nfs_callback_tcpport; |