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* nfs41: Refactor nfs4_{init,destroy}_callback for nfs4.0Benny Halevy2009-06-171-9/+37
| | | | | | Refactor-out code to bring the callback service up and down. Signed-off-by: Benny Halevy <bhalevy@panasas.com>
* nfs41: increment_{open,lock}_seqidBenny Halevy2009-06-172-5/+9
| | | | | | | | | | | | | | | Unlike minorversion0, in nfsv4.1 the open and lock seqids need not be incremented by the client and should always be set to zero. This is implemented using a new nfs_rpc_ops methods - increment_open_seqid and increment_lock_seqid Signed-off-by: Rahul Iyer <iyer@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: check for session not minorversion] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: only retry EXCHANGE_ID on recoverable errorsAndy Adamson2009-06-171-1/+22
| | | | | | | | Stops an infinite loop of EXCHANGE_ID. Signed-off-by: Andy Adamson <andros@netapp.com> [fixed checkpatch warnings] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
* nfs41: recover lease in _nfs4_lookup_rootBenny Halevy2009-06-173-1/+25
| | | | | | | This creates the nfsv4.1 session on mount. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: get_clid_cred for EXCHANGE_IDAndy Adamson2009-06-173-0/+17
| | | | | | | | | Unlike SETCLIENTID, EXCHANGE_ID requires a machine credential. Do not search for credentials other than the machine credential. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: add a get_clid_cred function to nfs4_state_recovery_opsAndy Adamson2009-06-173-1/+4
| | | | | | | | | EXCHANGE_ID has different credential requirements than SETCLIENTID. Prepare for a separate credential function. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: establish sessions-based clientidAndy Adamson2009-06-173-8/+50
| | | | | | | | | | | | | | | | | | | | | nfsv4.1 clientid is established via EXCHANGE_ID rather than SETCLIENTID{,_CONFIRM} This is implemented using a new establish_clid method in nfs4_state_recovery_ops. nfs41: establish clientid via exchange id only if cred != NULL >From 2.6.26 reclaimer() uses machine cred for setting up the client id therefore it is never expected to be NULL. Signed-off-by: Rahul Iyer <iyer@netapp.com> [removed dprintk] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: lease renewal] [revamped patch for new nfs4_state_manager design] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: introduce get_state_renewal_credAndy Adamson2009-06-174-14/+14
| | | | | | | | | | | | | | | | | | Use the machine cred for sending SEQUENCE to renew the client's lease. [revamp patch for new state management design starting 2.6.29] [nfs41: support minorversion 1 for nfs4_check_lease] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: get cred in exchange_id when cred arg is NULL] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: use cl_machined_cred instead of cl_ex_cred] Since EXCHANGE_ID insists on using the machine credential, cl_ex_cred is not needed. nfs4_proc_exchange_id() is only called if the machine credential is available. Remove the credential logic from nfs4_proc_exchange_id. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: support minorversion 1 for nfs4_check_leaseBenny Halevy2009-06-173-1/+6
| | | | | | | [moved nfs4_get_renew_cred related changes to "nfs41: introduce get_state_renewal_cred"] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: lease renewalBenny Halevy2009-06-173-1/+33
| | | | | | | | | | | | | | | | | | | | | | Send a NFSv4.1 SEQUENCE op rather than RENEW that was deprecated in minorversion 1. Use the nfs_client minorversion to select reboot_recover/ network_partition_recovery/state_renewal ops. Note: we use reclaimer to create the nfs41 session before there are any cl_superblocks for the nfs_client. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: check for session not minorversion] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [revamped patch for new nfs4_state_manager design] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: obliterate nfs4_state_recovery_ops.renew_lease method] moved to nfs4_state_maintenance_ops [also undid per-minorversion nfs4_state_recovery_ops here] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: schedule async session resetAndy Adamson2009-06-171-0/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Define a new session reset state which is set upon a sequence operation error in both the sync and async error handlers. Place all new requests and all but the last outstanding rpc on the slot_tbl_waitq. Spawn the recovery thread when the last slot is free. Call nfs4_proc_destroy_session, reinitialize the session, call nfs4_proc_create_session, clear the session reset state, and wake up the next task on the slot_tbl_waitq. Return the nfs4_proc_destroy_session status to the session reclaimer and check for NFS4ERR_BADSESSION and NFS4ERR_DEADSESSION. Other destroy session errors should be handled in nfs4_proc_destroy_session where the call can be retried with adjusted arguments. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> nfs41: make nfs4_wait_bit_killable public] nfs4_wait_bit_killable to be used by NFSv4.1 session recover logic. Signed-off-by: Rahul Iyer <iyer@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: have create_session work on nfs_client] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: trigger the state manager for session reset] Replace the session reset state with the NFS4CLNT_SESSION_SETUP cl_state. Place all rpc tasks to sleep on the slot table waitqueue until the slot table is drained, then schedule state recovery and wait for it to complete. Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: remove nfs41_session_recovery [ch] Replaced by using the nfs4_state_manager. Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: nfs4_wait_bit_killable only used locally] [nfs41: keep nfs4_wait_bit_killable static] [nfs41: keep const nfs_server in nfs4_handle_exception] [nfs41: remove session parameter from nfs4_find_slot] Signed-off-by: Andy Adamson <andros@netapp.com Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: resset the session from nfs41_setup_sequence] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: kick start nfs41 session recovery when handling errorsAndy Adamson2009-06-171-0/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove checking for any errors that the SEQUENCE operation does not return. -NFS4ERR_STALE_CLIENTID, NFS4ERR_EXPIRED, NFS4ERR_CB_PATH_DOWN, NFS4ERR_BACK_CHAN_BUSY, NFS4ERR_OP_NOT_IN_SESSION. SEQUENCE operation error recovery is very primative, we only reset the session. Remove checking for any errors that are returned by the SEQUENCE operation, but that resetting the session won't address. NFS4ERR_RETRY_UNCACHED_REP, NFS4ERR_SEQUENCE_POS,NFS4ERR_TOO_MANY_OPS. Add error checking for missing SEQUENCE errors that a session reset will address. NFS4ERR_BAD_HIGH_SLOT, NFS4ERR_DEADSESSION, NFS4ERR_SEQ_FALSE_RETRY. A reset of the session is currently our only response to a SEQUENCE operation error. Don't reset the session on errors where a new session won't help. Don't reset the session on errors where a new session won't help. [nfs41: nfs4_async_handle_error update error checking] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: trigger the state manager for session reset] Replace session state bit with nfs_client state bit. Set the NFS4CLNT_SESSION_SETUP bit upon a session related error in the sync/async error handlers. [nfs41: _nfs4_async_handle_error fix session reset error list] Sequence operation errors that session reset could help. NFS4ERR_BADSESSION NFS4ERR_BADSLOT NFS4ERR_BAD_HIGH_SLOT NFS4ERR_DEADSESSION NFS4ERR_CONN_NOT_BOUND_TO_SESSION NFS4ERR_SEQ_FALSE_RETRY NFS4ERR_SEQ_MISORDERED Sequence operation errors that a session reset would not help NFS4ERR_BADXDR NFS4ERR_DELAY NFS4ERR_REP_TOO_BIG NFS4ERR_REP_TOO_BIG_TO_CACHE NFS4ERR_REQ_TOO_BIG NFS4ERR_RETRY_UNCACHED_REP NFS4ERR_SEQUENCE_POS NFS4ERR_TOO_MANY_OPS Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41 nfs4_handle_exception fix session reset error list] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [moved nfs41_sequece_call_done code to nfs41: sequence operation] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: use rpc prepare call state for session resetAndy Adamson2009-06-175-25/+41
| | | | | | | | | | [nfs41: change nfs4_restart_rpc argument] [nfs41: check for session not minorversion] [nfs41: trigger the state manager for session reset] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [always define nfs4_restart_rpc] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: add session reset to state managerAndy Adamson2009-06-172-2/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the code to reset a session from the session_reclaimer to the nfs4_state_manager. Destroy the session, and create a new one. Treat NFS4ERR_BADSESSION and NFS4ERR_DEADSESSION as a successful nfs4_proc_destroy_session. Signal nfs4_proc_create_session that this is a session reset so that the session slot table is re-used. If the clientid is stale, set both NFS4CLNT_LEASE_EXPIRED and NFS4CLNT_SESSION_SETUP bits and retry. Use a switch statement in nfs4_session_recovery_handle_error for future patche which will add handling for other errors. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: session reset in nfs4_recovery_handle_error] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: reset session on nfs4_do_reclaim session reset error] If nfs4_do_reclaim gets a session reset error, nfs4_recovery_handle_error will set the NFS4CLNT_SESSION_SETUP bit, and the state manager should continue processing to reset the session. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [move nfs4_proc_destroy_session declaration here] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: add session setup to the state managerAndy Adamson2009-06-175-5/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At mount, nfs_alloc_client sets the cl_state NFS4CLNT_LEASE_EXPIRED bit and nfs4_alloc_session sets the NFS4CLNT_SESSION_SETUP bit, so both bits are set when nfs4_lookup_root calls nfs4_recover_expired_lease which schedules the nfs4_state_manager and waits for it to complete. Place the session setup after the clientid establishment in nfs4_state_manager so that the session is setup right after the clientid has been established without rescheduling the state manager. Unlike nfsv4.0, the nfs_client struct is not ready to use until the session has been established. Postpone marking the nfs_client struct to NFS_CS_READY until after a successful CREATE_SESSION call so that other threads cannot use the client until the session is established. If the EXCHANGE_ID call fails and the session has not been setup (the NFS4CLNT_SESSION_SETUP bit is set), mark the client with the error and return. If the session setup CREATE_SESSION call fails with NFS4ERR_STALE_CLIENTID which could occur due to server reboot or network partition inbetween the EXCHANGE_ID and CREATE_SESSION call, reset the NFS4CLNT_LEASE_EXPIRED and NFS4CLNT_SESSION_SETUP bits and try again. If the CREATE_SESSION call fails with other errors, mark the client with the error and return. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: NFS_CS_SESSION_SETUP cl_cons_state for back channel setup] On session setup, the CREATE_SESSION reply races with the server back channel probe which needs to succeed to setup the back channel. Set a new cl_cons_state NFS_CS_SESSION_SETUP just prior to the CREATE_SESSION call and add it as a valid state to nfs_find_client so that the client back channel can find the nfs_client struct and won't drop the server backchannel probe. Use a new cl_cons_state so that NFSv4.0 back channel behaviour which only sets NFS_CS_READY is unchanged. Adjust waiting on the nfs_client_active_wq accordingly. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: rename NFS_CS_SESSION_SETUP to NFS_CS_SESSION_INITING] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: set NFS_CL_SESSION_INITING in alloc_session] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: move session setup into a function] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [moved nfs4_proc_create_session declaration here] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: reset the session slot tableAndy Adamson2009-06-171-3/+41
| | | | | | | | | | | | | Separated from nfs41: schedule async session reset Do not kfree the session slot table upon session reset, just re-initialize it. Add a boolean to nfs4_proc_create_session to inidicate if this is a session reset or a session initialization. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: sequence operationAndy Adamson2009-06-172-5/+214
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the sequence operation conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Check returned sessionid, slotid and slot sequenceid in decode_sequence. If the server returns different values for sessionID, slotID or slot sequence number than what was sent, the server is looney tunes. Pass the sequence operation status to nfs41_sequence_done in order to determine when to increment the slot sequence ID. Free slot is separated from sequence done. Signed-off-by: Rahul Iyer <iyer@netapp.com> Signed-off-by: Ricardo Labiaga <ricardo.labiaga@netapp.com> Signed-off-by: Andy Adamson<andros@umich.edu> [nfs41: sequence res use slotid] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: deref slot table in decode_sequence only for minorversion!=0] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs4_call_sync] [nfs41: remove SEQ4_STATUS_USE_TK_STATUS] [nfs41: return ESERVERFAULT in decode_sequence] [no sr_session, no sr_flags] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: use nfs4_call_sync_sequence to renew session lease] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove nfs4_call_sync_sequence forward definition] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: use struct nfs_client for nfs41_proc_async_sequence] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: pass *session in seq_args and seq_res] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41 nfs41_sequence_call_done update error checking] [nfs41 nfs41_sequence_done update error checking] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove switch on error from nfs41_sequence_call_done] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: enable nfs_client only nfs4_async_handle_errorAndy Adamson2009-06-171-4/+9
| | | | | | | | | The session is per struct nfs_client, not per nfs_server. Allow the handler to be called with no nfs_server which simplifies the nfs4_proc_async_sequence session renewal call and will let it be used by pnfs file layout data servers. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: destroy_session operationAndy Adamson2009-06-173-0/+91
| | | | | | | | | | | | | | | | | | | | Implement the destroy_session operation conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Signed-off-by: Ricardo Labiaga <ricardo.labiaga@netapp.com> Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove extraneous rpc_clnt pointer] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41; NFS_CS_READY required for DESTROY_SESSION] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: pass *session in seq_args and seq_res] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> [nfs41: fix encode_destroy_session's xdr Xcoding pointer type] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
* nfs41: use session attributes for rsize and wsizeAndy Adamson2009-06-171-0/+17
| | | | | | | | | | | Set the mount points rsize and wsize to the negotiated session fore channel maximum response and requeset size. These values will be bound checked in nfs_server_set_fsinfo. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [move nfs4_session_set_rwsize into CONFIG_NFS_V4] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: verify session channel attribuesAndy Adamson2009-06-171-2/+48
| | | | | | | | | | | | Invalidate the session if the server returns invalid fore or back channel attributes. Use a KERN_WARNING to report the fatal session estabishment error. Signed-off-by: Andy Adamson <andros@netapp.com> [refactor nfs4_verify_channel_attrs] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: create_session operationAndy Adamson2009-06-172-0/+357
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the create_session operation conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Set the real fore channel max operations to preserve server resources. Note: If the server returns < NFS4_MAX_OPS, the client will very soon get an NFS4ERR_TOO_MANY_OPS. A later patch will handle this. Set the max_rqst_sz and max_resp_sz to PAGE_SIZE - we preallocate the buffers. Set the back channel max_resp_sz_cached to zero to force the client to always set csa_cachethis to FALSE because the current implementation of the back channel DRC only supports caching the CB_SEQUENCE operation. The client back channel server supports one slot, and desires 2 operations per compound. Signed-off-by: Ricardo Labiaga <ricardo.labiaga@netapp.com> Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove extraneous rpc_clnt pointer] Use the struct nfs_client cl_rpcclient. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs4_init_channel_attrs, just use nfs41_create_session_args] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: use rsize and wsize for session channel attributes] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: set channel max operations] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: set back channel attributes] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: obliterate nfs4_adjust_channel_attrs] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: have create_session work on nfs_client] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: move CONFIG_NFS_V4_1 endif] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: pass *session in seq_args and seq_res] [moved nfs4_init_slot_table definition here] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: use kcalloc to allocate slot table] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> [nfs41: fix Xcode_create_session's xdr Xcoding pointer type] [nfs41: refactor decoding of channel attributes] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
* nfs41: get_lease_timeAndy Adamson2009-06-172-0/+145
| | | | | | | | | | | | | | | | | | | | | | | | | | | | get_lease_time uses the FSINFO rpc operation to get the lease time attribute. nfs4_get_lease_time() is only called from the state manager on session setup so don't recover from clientid or sequence level errors. We do need to recover from NFS4ERR_DELAY or NFS4ERR_GRACE. Use NFS4_POLL_RETRY_MIN - the Linux server returns NFS4ERR_DELAY when an upcall is needed to resolve an uncached export referenced by a file handle. [nfs41: sequence res use slotid] Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove extraneous rpc_clnt pointer] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: have get_lease_time work on nfs_client] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: get_lease_time recover from NFS4ERR_DELAY] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: pass *session in seq_args and seq_res] [define nfs4_get_lease_time_{args,res}] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: exchange_id operationBenny Halevy2009-06-172-0/+200
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the exchange_id operation conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Unlike NFSv4.0, NFSv4.1 requires machine credentials. RPC_AUTH_GSS machine credentials will be passed into the kernel at mount time to be available for the exchange_id operation. RPC_AUTH_UNIX root mounts can use the UNIX root credential. Store the root credential in the nfs_client struct. Without a credential, NFSv4.1 state renewal fails. [nfs41: establish clientid via exchange id only if cred != NULL] Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: move nfstime4 from under CONFIG_NFS_V4_1] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: do not wait a lease time in exchange id] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: pass *session in seq_args and seq_res] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> [nfs41: Ignoring impid in decode_exchange_id is missing a READ_BUF] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: fix Xcode_exchange_id's xdr Xcoding pointer type] [nfs41: get rid of unused struct nfs41_exchange_id_res members] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
* nfs41 delegreturn sequence setup done supportAndy Adamson2009-06-171-1/+23
| | | | | | | | | | | | | | | | | | | | Separate delegreturn calls from nfs41: sequence setup/done support Implement the delegreturn rpc_call_prepare method for asynchronuos nfs rpcs, call nfs41_setup_sequence from respective rpc_call_validate_args methods. Call nfs4_sequence_done from respective rpc_call_done methods. Note that we need to pass a pointer to the nfs_server in calls data for passing on to nfs4_sequence_done. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs: client data server write validate and release] Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41 commit sequence setup done supportAndy Adamson2009-06-173-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Separate commit calls from nfs41: sequence setup/done support Implement the commit rpc_call_prepare method for asynchronuos nfs rpcs, call nfs41_setup_sequence from respective rpc_call_validate_args methods. Call nfs4_sequence_done from respective rpc_call_done methods. Note that we need to pass a pointer to the nfs_server in calls data for passing on to nfs4_sequence_done. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs: client data server write validate and release] Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: Support sessions with O_DIRECT.] Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: separate free slot from sequence done] [nfs41: nfs4_sequence_free_slot use nfs_client for data server] Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41 write sequence setup done supportAndy Adamson2009-06-174-0/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Separate write calls from nfs41: sequence setup/done support Implement the write rpc_call_prepare method for asynchronuos nfs rpcs, call nfs41_setup_sequence from respective rpc_call_validate_args methods. Call nfs4_sequence_done from respective rpc_call_done methods. Note that we need to pass a pointer to the nfs_server in calls data for passing on to nfs4_sequence_done. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs: client data server write validate and release] Signed-off-by: Andy Adamson <andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [move the nfs4_sequence_free_slot call in nfs_readpage_retry from] [nfs41: separate free slot from sequence done Signed-off-by: Andy Adamson <andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: Support sessions with O_DIRECT.] Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs4_sequence_free_slot use nfs_client for data server] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: read sequence setup/done supportAndy Adamson2009-06-174-2/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the read rpc_call_prepare method for asynchronuos nfs rpcs, call nfs41_setup_sequence from respective rpc_call_validate_args methods. Call nfs4_sequence_done from respective rpc_call_done methods. Note that we need to pass a pointer to the nfs_server in calls data for passing on to nfs4_sequence_done. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs: client data server write validate and release] Signed-off-by: Andy Adamson <andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [move the nfs4_sequence_free_slot call in nfs_readpage_retry from] [nfs41: separate free slot from sequence done] [remove nfs_readargs.nfs_server, use calldata->inode instead] Signed-off-by: Andy Adamson <andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: Support sessions with O_DIRECT] Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs4_sequence_free_slot use nfs_client for data server] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: unlink sequence setup/done supportAndy Adamson2009-06-172-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | Implement the rpc_call_prepare methods for asynchronuos nfs rpcs, call nfs41_setup_sequence from respective rpc_call_validate_args methods. Call nfs4_sequence_done from respective rpc_call_done methods. Note that we need to pass a pointer to the nfs_server in calls data for passing on to nfs4_sequence_done. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs: client data server write validate and release] Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: separate free slot from sequence done] [nfs41: sequence res use slotid] [nfs41: remove SEQ4_STATUS_USE_TK_STATUS] [nfs41: nfs4_sequence_free_slot use nfs_client for data server] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: locku sequence setup/done supportAndy Adamson2009-06-171-1/+9
| | | | | | | | | | | | | | | | | | Separate nfs4_locku calls from nfs41: sequence setup/done support Call nfs4_sequence_done from respective rpc_call_done methods. Note that we need to pass a pointer to the nfs_server in calls data for passing on to nfs4_sequence_done. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs: client data server write validate and release] Signed-off-by: Andy Adamson <andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs4_sequence_free_slot use nfs_client for data server] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: lock sequence setup/done supportAndy Adamson2009-06-171-0/+8
| | | | | | | | | | | | | | | | Separate nfs4_lock calls from nfs41: sequence setup/done support Call nfs4_sequence_done from respective rpc_call_done methods. Note that we need to pass a pointer to the nfs_server in calls data for passing on to nfs4_sequence_done. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs: client data server write validate and release] [use nfs4_sequence_done_free_slot] Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: open sequence setup/done supportAndy Adamson2009-06-171-0/+8
| | | | | | | | | | | | | | | | Separate nfs4_open calls from nfs41: sequence setup/done support Call nfs4_sequence_done from respective rpc_call_done methods. Note that we need to pass a pointer to the nfs_server in calls data for passing on to nfs4_sequence_done. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs: client data server write validate and release] [use nfs4_sequence_done_free_slot] Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: close sequence setup/done supportAndy Adamson2009-06-171-1/+7
| | | | | | | | | | | | | | | | | | | | | Separate nfs4_close calls from nfs41: sequence setup/done support Call nfs4_sequence_done from respective rpc_call_done methods. Note that we need to pass a pointer to the nfs_server in calls data for passing on to nfs4_sequence_done. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs: client data server write validate and release] Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: separate free slot from sequence done] [nfs41: sequence res use slotid] [nfs41: remove SEQ4_STATUS_USE_TK_STATUS] [nfs41: nfs4_sequence_free_slot use nfs_client for data server] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: nfs41_call_sync_doneAndy Adamson2009-06-171-0/+9
| | | | | | | | | | | | | | | | | | Implement nfs4.1 synchronous rpc_call_done method that essentially just calls nfs4_sequence_done, that turns around and calls nfs41_sequence_done for minorversion1 rpcs. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: check for session not minorversion] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [move adding nfs4_sequence_free_slot from nfs41-separate-free-slot-from-sequence-done] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs41_call_sync_data use nfs_client not nfs_server] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: nfs41_sequence_doneAndy Adamson2009-06-171-0/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Handle session level errors, update slot sequence id and sessions bookeeping, free slot. [nfs41: sequence res use slotid] Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove SEQ4_STATUS_USE_TK_STATUS] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: check for session not minorversion] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: bail out early out of nfs41_sequence_done if !res->sr_session] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [move nfs4_sequence_done from nfs41: nfs41_call_sync_done] Signed-off-by: Andy Adamson <andros@netapp.com> [move nfs4_sequence_free_slot from nfs41: separate free slot from sequence done] Don't free the slot until after all rpc_restart_calls have completed. Session reset will require more work. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [moved reset sr_slotid to nfs41_sequence_free_slot] [free slot also on unexpectecd error] [remove seq_res.sr_session member, use nfs_client's instead] [ditch seq_res.sr_flags until used] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [look at sr_slotid for bailing out early from nfs41_sequence_done] [nfs41: rpc_wake_up_next if sessions slot was not consumed.] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs4_sequence_free_slot use nfs_client for data server] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove unused error checking in nfs41_sequence_done] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: remove nfs4_has_session check in nfs41_sequence_done] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: remove nfs_client pointer check] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: nfs41_sequence_free_slotAndy Adamson2009-06-172-0/+35
| | | | | | | | | | | | | | | | | | | | | | | | [from nfs41: separate free slot from sequence done] Don't free the slot until after all rpc_restart_calls have completed. Session reset will require more work. As noted by Trond, since we're using rpc_wake_up_next rather than rpc_wake_up() we must always wake up the next task in the queue either by going through nfs4_free_slot, or just calling rpc_wake_up_next if no slot is to be freed. [nfs41: sequence res use slotid] [nfs41: remove SEQ4_STATUS_USE_TK_STATUS] [got rid of nfs4_sequence_res.sr_session, use nfs_client.cl_session instead] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: rpc_wake_up_next if sessions slot was not consumed.] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs4_sequence_free_slot use nfs_client for data server] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: free slotAndy Adamson2009-06-171-0/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Free a slot in the slot table. Mark the slot as free in the bitmap-based allocation table by clearing a bit corresponding to the slotid. Update lowest_free_slotid if freed slotid is lower than that. Update highest_used_slotid. In the case the freed slotid equals the highest_used_slotid, scan downwards for the next highest used slotid using the optimized fls* functions. Finally, wake up thread waiting on slot_tbl_waitq for a free slot to become available. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: free slot use slotid] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: use find_first_zero_bit for nfs4_find_slot] While at it, obliterate lowest_free_slotid and fix-up related comments. As per review comment 21/85. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: use __clear_bit for nfs4_free_slot] While at it, fix-up function comment. Part of review comment 22/85. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: use find_last_bit in nfs4_free_slot to determine highest used slot.] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: rpc_sleep_on slot_tbl_waitq must be called under slot_tbl_lock] Otherwise there's a race (we've hit) with nfs4_free_slot where nfs41_setup_sequence sees a full slot table, unlocks slot_tbl_lock, nfs4_free_slots happen concurrently and call rpc_wake_up_next where there's nobody to wake up yet, context goes back to nfs41_setup_sequence which goes to sleep when the slot table is actually empty now and there's no-one to wake it up anymore. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: setup_sequence methodAndy Adamson2009-06-172-2/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allocate a slot in the session slot table and set the sequence op arguments. Called at the rpc prepare stage. Add a status to nfs41_sequence_res, initialize it to one so that we catch rpc level failures which do not go through decode_sequence which sets the new status field. Note that upon an rpc level failure, we don't know if the server processed the sequence operation or not. Proceed as if the server did process the sequence operation. Signed-off-by: Rahul Iyer <iyer@netapp.com> [nfs41: sequence args use slotid] [nfs41: find slot return slotid] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove SEQ4_STATUS_USE_TK_STATUS] As per 11-14-08 review [move extern declaration from nfs41: sequence setup/done support] [removed sa_session definition, changed sa_cache_this into a u8 to reduce footprint] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: rpc_sleep_on slot_tbl_waitq must be called under slot_tbl_lock] Otherwise there's a race (we've hit) with nfs4_free_slot where nfs41_setup_sequence sees a full slot table, unlocks slot_tbl_lock, nfs4_free_slots happen concurrently and call rpc_wake_up_next where there's nobody to wake up yet, context goes back to nfs41_setup_sequence which goes to sleep when the slot table is actually empty now and there's no-one to wake it up anymore. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: find slotBenny Halevy2009-06-171-0/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | Find a free slot using bitmap-based allocation. Use the optimized ffz function to find a zero bit in the bitmap that indicates a free slot, starting the search from the 'lowest_free_slotid' position. If found, mark the slot as used in the bitmap, get the slot's slotid and seqid, and update max_slotid to be used by the SEQUENCE operation. Also, update lowest_free_slotid for next search. If no free slot was found the caller has to wait for a free slot (outside the scope of this function) Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: find slot return slotid] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [use find_first_zero_bit for nfs4_find_slot as per review comment 21/85.] [use NFS4_MAX_SLOT_TABLE rather than NFS4_NO_SLOT] [nfs41: rpc_sleep_on slot_tbl_waitq must be called under slot_tbl_lock] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: nfs4_setup_sequenceAndy Adamson2009-06-171-2/+98
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Perform the nfs4_setup_sequence in the rpc_call_prepare state. If a session slot is not available, we will rpc_sleep_on the slot wait queue leaving the tk_action as rpc_call_prepare. Once we have a session slot, hang on to it even through rpc_restart_calls. Ensure the nfs41_sequence_res sr_slot pointer is NULL before rpc_run_task is called as nfs41_setup_sequence will only find a new slot if it is NULL. A future patch will call free slot after any rpc_restart_calls, and handle the rpc restart that result from a sequence operation error. Signed-off-by: Rahul Iyer <iyer@netapp.com> [nfs41: sequence res use slotid] Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: simplify nfs4_call_sync] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs4_call_sync] [nfs41: check for session not minorversion] [nfs41: remove rpc_message from nfs41_call_sync_args] [moved NFS4_MAX_SLOT_TABLE logic into nfs41_setup_sequence] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs41_call_sync_data use nfs_client not nfs_server] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: expose nfs4_call_sync_session for lease renewal] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove unnecessary return check] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: xdr {encode,decode}_sequenceAndy Adamson2009-06-171-10/+232
| | | | | | | | | | | | | | | | Implement stubs for encode and decode sequence, defined as no-ops when CONFIG_NFS_V4_1 is not defined. Add the nfsv41 encode and decode sizes. Add encode_sequence to all nfs4_enc_* routines and decode_sequence to all nfs4_dec_* routines as required by v41. [was nfs41: minorversion support for xdr] [added nfs_client argument to encode_sequence so not to use sequence_args to pass sa_session] Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: pass *session in seq_args and seq_res] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: encode minorversion in compound headerBenny Halevy2009-06-171-30/+40
| | | | | | | | Signed-off-by: Andy Adamdon <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: pass *session in seq_args and seq_res] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: use dynamically computed compound_hdr.replen for xdr_inline_pages offsetBenny Halevy2009-06-171-38/+10
| | | | | | | | | | | | | | | As Trond suggested, rather than passing a constant to xdr_inline_pages, keep a running count of the expected reply bytes. In preparation for nfs41, where additional op sequence are expteced when talking to nfs41 servers. [NFS: cb_compoundhdr.replen is in words not bytes] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: get fs_locations replen before encoding the GETATTR] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: get getacl replen before encoding the GETATTR] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: update hdr->replen for every encode opBenny Halevy2009-06-171-0/+31
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: define and initialize compound_hdr.replenBenny Halevy2009-06-171-34/+43
| | | | | | | | | | | | | | | | replen holds the running count of expected reply bytes. repl will then be used by encoding routines for xdr_inline_pages offset after which data bytes are to be received directly into the xdr buffer pages. NOTE: According to the nfsv4 and v4.1 RFCs, the replied tag SHOULD be the same is the one sent, but this is not required as a MUST for the server to do so. The server may screw us if it replies a tag of a different length in the compound result. [NFS: cb_compoundhdr.replen is in words not bytes] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: use decode_change_info_maxsz for xdr maxsz calculationsBenny Halevy2009-06-171-3/+7
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: set up seq_res.sr_slotidAndy Adamson2009-06-174-0/+9
| | | | | | | | | | Initialize nfs4_sequence_res sr_slotid to NFS4_MAX_SLOT_TABLE. [was nfs41: sequence res use slotid] Signed-off-by: Andy Adamson <andros@netapp.com> [pulled definition of struct nfs4_sequence_res.sr_slotid to here] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: nfs41: pass *session in seq_args and seq_resBenny Halevy2009-06-171-0/+1
| | | | | | | | | To be used for getting the rpc's minorversion and for nfs41 xdr {en,de}coding of the sequence operation. Reset the seq session ptrs for minorversion=0 rpc calls. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: introduce nfs4_call_syncAndy Adamson2009-06-173-19/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use nfs4_call_sync rather than rpc_call_sync to provide for a nfs41 sessions-enabled interface for sessions manipulation. The nfs41 rpc logic uses the rpc_call_prepare method to recover and create the session, as well as selecting a free slot id and the rpc_call_done to free the slot and update slot table related metadata. In the coming patches we'll add rpc prepare and done routines for setting up the sequence op and processing the sequence result. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs4_call_sync] As per 11-14-08 review. Squash into "nfs41: introduce nfs4_call_sync" and "nfs41: nfs4_setup_sequence" Define two functions one for v4 and one for v41 add a pointer to struct nfs4_client to the correct one. Signed-off-by: Andy Adamson <andros@netapp.com> [added BUG() in _nfs4_call_sync_session if !CONFIG_NFS_V4_1] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: check for session not minorversion] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [group minorversion specific stuff together] Signed-off-by: Alexandros Batsakis <Alexandros.Batsakis@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: fixup nfs4_clear_client_minor_version] [introduce nfs4_init_client_minor_version() in this patch] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [cleaned-up patch: got rid of nfs_call_sync_t, dprintks, cosmetics, extra server defs] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: use nfs4_fs_locations_resBenny Halevy2009-06-172-3/+8
| | | | | | | | | In preparation for nfs41 sequence processing. Signed-off-by: Andy Admason <andros@netapp.com> [find nfs4_fs_locations_res] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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