aboutsummaryrefslogtreecommitdiff
path: root/net/sunrpc
AgeCommit message (Collapse)Author
2008-07-09rpc: minor cleanup of scheduler callback code\\\"J. Bruce Fields\\\
Try to make the comment here a little more clear and concise. Also, this macro definition seems unnecessary. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09rpc: remove some unused macros\\\"J. Bruce Fields\\\
There used to be a print_hexl() function that used isprint(), now gone. I don't know why NFS_NGROUPS and CA_RUN_AS_MACHINE were here. I also don't know why another #define that's actually used was marked "unused". Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09rpc: eliminate unused variable in auth_gss upcall code\\\"J. Bruce Fields\\\
Also, a minor comment grammar fix in the same file. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09rpc: bring back cl_chattyOlga Kornievskaia
The cl_chatty flag alows us to control whether a given rpc client leaves "server X not responding, timed out" messages in the syslog. Such messages make sense for ordinary nfs clients (where an unresponsive server means applications on the mountpoint are probably hanging), but not for the callback client (which can fail more commonly, with the only result just of disabling some optimizations). Previously cl_chatty was removed, do to lack of users; reinstate it, and use it for the nfsd's callback client. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Remove obsolete messages during transport connectChuck Lever
Recent changes to the RPC client's transport connect logic make connect status values ECONNREFUSED and ECONNRESET impossible. Clean up xprt_connect_status() to account for these changes. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Display some debugging information as text rather than numbersChuck Lever
In rpc_show_tasks(), display the program name, version number, procedure name and tk_action as human-readable variable-length text fields rather than columnar numbers. Doing the symbol lookup here helps in cases where we have actual debugging output from a kernel log, but don't have access to the kernel image or RPC module that generated the output. Sample output: -pid- flgs status -client- --rqstp- -timeout ---ops-- 5608 0001 -11 eeb42690 f6d93710 0 f8fa1764 nfsv3 WRITE a:call_transmit_status q:none 5609 0001 -11 eeb42690 f6d937e0 0 f8fa1764 nfsv3 WRITE a:call_status q:xprt_sending 5610 0001 -11 eeb42690 f6d93230 0 f8fa1764 nfsv3 WRITE a:call_status q:xprt_sending 5611 0001 -11 eeb42690 f6d93300 0 f8fa1764 nfsv3 WRITE a:call_status q:xprt_sending 5612 0001 -11 eeb42690 f6d93090 0 f8fa1764 nfsv3 WRITE a:call_status q:xprt_sending 5613 0001 -11 eeb42690 f6d933d0 0 f8fa1764 nfsv3 WRITE a:call_status q:xprt_sending 5614 0001 -11 eeb42690 f6d93cc0 0 f8fa1764 nfsv3 WRITE a:call_status q:xprt_sending 5615 0001 -11 eeb42690 f6d93a50 0 f8fa1764 nfsv3 WRITE a:call_status q:xprt_sending 5616 0001 -11 eeb42690 f6d93640 0 f8fa1764 nfsv3 WRITE a:call_status q:xprt_sending 5617 0001 -11 eeb42690 f6d93b20 0 f8fa1764 nfsv3 WRITE a:call_status q:xprt_sending 5618 0001 -11 eeb42690 f6d93160 0 f8fa1764 nfsv3 WRITE a:call_status q:xprt_sending Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Refactor rpc_show_tasksChuck Lever
Clean up: move the logic that displays each task to its own function. This removes indentation and makes future changes easier. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Don't display the rpc_show_tasks header if there are no tasksChuck Lever
Clean up: don't display the rpc_show_tasks column header unless there is at least one task to display. As far as I can tell, it is safe to let the list_for_each_entry macro decide that each list is empty. scripts/checkpatch.pl also wants a KERN_FOO at the start of any newly added printk() calls, so this and subsequent patches will also add KERN_INFO. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Rename "call_" functions that are no longer FSM statesChuck Lever
The RPC client uses a finite state machine to move RPC tasks through each step of an RPC request. Each state is contained in a function in net/sunrpc/clnt.c, and named call_foo. Some of the functions named call_foo have changed over the past few years and are no longer states in the FSM. These include: call_encode, call_header, and call_verify. As a clean up, rename the functions that have changed. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Add a function to display the name of an RPC procedureChuck Lever
Improve debugging messages in call_start() and call_verify() by having them show the RPC procedure name instead of the procedure number. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Use GFP_NOFS when allocating credentialsTrond Myklebust
Since the credentials may be allocated during the call to rpc_new_task(), which again may be called by a memory allocator... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: An ENOMEM error from call_encode is always fatalTrond Myklebust
The special 'ENOMEM' case that was previously flagged as non-fatal is bogus: auth_gss always returns EAGAIN for non-fatal errors, and may in fact return ENOMEM in the special case where xdr_buf_read_netobj runs out of preallocated buffer space (invariably a _fatal_ error, since there is no provision for preallocating larger buffers). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Ensure we exit early in case of an encode errorTrond Myklebust
All errors from call_encode(), with exception of EAGAIN are fatal, so we should immediately return instead of proceeding to xprt_transmit(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-08SUNRPC: Fix an rpcbind breakage for the case of IPv6 lookupsTrond Myklebust
Now that rpcb_next_version has been split into an IPv4 version and an IPv6 version, we Oops when rpcb_call_async attempts to look up the IPv6-specific RPC procedure in rpcb_next_version. Fix the Oops simply by having rpcb_getport_async pass the correct RPC procedure as an argument. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-08SUNRPC: Fix a double-free in rpcbindTrond Myklebust
It is wrong to be freeing up the rpcbind arguments if the call to rpcb_call_async() fails, since they should already have been freed up by rpcb_map_release(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-06Merge commit 'v2.6.26-rc9' into cpus4096Ingo Molnar
2008-07-03Merge branch 'for-bfields' of git://linux-nfs.org/~tomtucker/xprt-switch-2.6 ↵J. Bruce Fields
into for-2.6.27
2008-07-03svcrpc: fix handling of garbage argsJ. Bruce Fields
To return garbage_args, the accept_stat must be 0, and we must have a verifier. So we shouldn't be resetting the write pointer as we reject the call. Also, we must add the two placeholder words here regardless of success of the unwrap, to ensure the output buffer is left in a consistent state for svcauth_gss_release(). This fixes a BUG() in svcauth_gss.c:svcauth_gss_release(). Thanks to Aime Le Rouzic for bug report, debugging help, and testing. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Tested-by: Aime Le Rouzic <aime.le-rouzic@bull.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-02svcrdma: Change WR context get/put to use the kmem cacheTom Tucker
Change the WR context pool to be shared across mount points. This reduces the RDMA transport memory footprint significantly since idle mounts don't consume WR context memory. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Create a kmem cache for the WR contextsTom Tucker
Create a kmem cache to hold WR contexts. Next we will convert the WR context get and put services to use this kmem cache. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Add flush_scheduled_work to module exit functionTom Tucker
Make certain all transports pending free are flushed from the wq before unloading the module. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Limit ORD based on client's advertised IRDTom Tucker
When adapters have differing IRD limits, the RDMA transport will fail to connect properly. The RDMA transport should use the client's advertised inbound read limit when computing its outbound read limit. For iWARP transports, there is currently no standard for exchanging IRD/ORD during connection establishment so the 'responder_resources' field in the connect event is the local device's limit. The RDMA transport can be configured to use a smaller ORD by writing the desired number to the /proc/sys/sunrpc/svc_rdma/max_outbound_read_requests file. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Remove unneeded spin locks from __svc_rdma_freeTom Tucker
At the time __svc_rdma_free is called, we are guaranteed that all references to this transport are gone. There is, therefore, no need to protect the resource lists with a spin lock. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Add dma map count and WARN_ONTom Tucker
Add a dma map count in order to verify that all DMA mapping resources have been freed when the transport is closed. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Move the DMA unmap logic to the CQ handlerTom Tucker
Separate DMA unmap from context destruction and perform DMA unmapping in the SQ/RQ CQ reap functions. This is necessary to support software based RDMA implementations that actually copy the data in their ib_dma_unmap callback functions and architectures that don't have cache coherent I/O busses. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Use reply and chunk map for RDMA_READ processingTom Tucker
Modify the RDMA_READ processing to use the reply and chunk list mapping data types. Also add a special purpose 'hdr_count' field in in the context to hold the header page count instead of overloading the SGE length field and corrupting the DMA map length. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Use RPC reply map for RDMA_WRITE processingTom Tucker
Use the new svc_rdma_req_map data type for mapping the client side memory to the server side memory. Move the DMA mapping to the context pointed to by each WR individually so that it is unmapped after the WR completes. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-07-02svcrdma: Add a type for keeping NFS RPC mappingTom Tucker
Create a new data structure to hold the remote client address space to local server address space mapping. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-06-23gss_krb5: Use random value to initialize confounderKevin Coffman
Initialize the value used for the confounder to a random value rather than starting from zero. Allow for confounders of length 8 or 16 (which will be needed for AES). Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-23gss_krb5: move gss_krb5_crypto into the krb5 moduleKevin Coffman
The gss_krb5_crypto.o object belongs in the rpcsec_gss_krb5 module. Also, there is no need to export symbols from gss_krb5_crypto.c Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-23gss_krb5: create a define for token header size and clean up ptr locationKevin Coffman
cleanup: Document token header size with a #define instead of open-coding it. Don't needlessly increment "ptr" past the beginning of the header which makes the values passed to functions more understandable and eliminates the need for extra "krb5_hdr" pointer. Clean up some intersecting white-space issues flagged by checkpatch.pl. This leaves the checksum length hard-coded at 8 for DES. A later patch cleans that up. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-23sunrpc: remove sv_kill_signal field from svc_serv structJeff Layton
Since we no longer make any distinction between shutdown signals with nfsd, then it becomes easier to just standardize on a particular signal to use to bring it down (SIGINT, in this case). Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-23knfsd: convert knfsd to kthread APIJeff Layton
This patch is rather large, but I couldn't figure out a way to break it up that would remain bisectable. It does several things: - change svc_thread_fn typedef to better match what kthread_create expects - change svc_pool_map_set_cpumask to be more kthread friendly. Make it take a task arg and and get rid of the "oldmask" - have svc_set_num_threads call kthread_create directly - eliminate __svc_create_thread Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-23knfsd: Replace lock_kernel with a mutex for nfsd thread startup/shutdown ↵Neil Brown
locking. This removes the BKL from the RPC service creation codepath. The BKL really isn't adequate for this job since some of this info needs protection across sleeps. Also, add some comments to try and clarify how the locking should work and to make it clear that the BKL isn't necessary as long as there is adequate locking between tasks when touching the svc_serv fields. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-06-11net: remove CVS keywordsAdrian Bunk
This patch removes CVS keywords that weren't updated for a long time from comments. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-23net: Pass reference to cpumask variable in net/sunrpc/svc.cMike Travis
* Pass reference to cpumask variable instead of using stack. For inclusion into sched-devel/latest tree. Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git + sched-devel/latest .../mingo/linux-2.6-sched-devel.git Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-20Merge branch 'for-2.6.26' of git://linux-nfs.org/~bfields/linuxLinus Torvalds
* 'for-2.6.26' of git://linux-nfs.org/~bfields/linux: (25 commits) svcrdma: Verify read-list fits within RPCSVC_MAXPAGES svcrdma: Change svc_rdma_send_error return type to void svcrdma: Copy transport address and arm CQ before calling rdma_accept svcrdma: Set rqstp transport address in rdma_read_complete function svcrdma: Use ib verbs version of dma_unmap svcrdma: Cleanup queued, but unprocessed I/O in svc_rdma_free svcrdma: Move the QP and cm_id destruction to svc_rdma_free svcrdma: Add reference for each SQ/RQ WR svcrdma: Move destroy to kernel thread svcrdma: Shrink scope of spinlock on RQ CQ svcrdma: Use standard Linux lists for context cache svcrdma: Simplify RDMA_READ deferral buffer management svcrdma: Remove unused READ_DONE context flags bit svcrdma: Return error from rdma_read_xdr so caller knows to free context svcrdma: Fix error handling during listening endpoint creation svcrdma: Free context on post_recv error in send_reply svcrdma: Free context on ib_post_recv error svcrdma: Add put of connection ESTABLISHED reference in rdma_cma_handler svcrdma: Fix return value in svc_rdma_send svcrdma: Fix race with dto_tasklet in svc_rdma_send ...
2008-05-20Merge branch 'from-tomtucker' into for-2.6.26J. Bruce Fields
2008-05-19svcrdma: Verify read-list fits within RPCSVC_MAXPAGESTom Tucker
A RDMA read-list cannot contain more elements than RPCSVC_MAXPAGES or it will overflow the DTO context. Verify this when processing the protocol header. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Change svc_rdma_send_error return type to voidTom Tucker
The svc_rdma_send_error function is called when an RPCRDMA protocol error is detected. This function attempts to post an error reply message. Since an error posting to a transport in error is ignored, change the return type to void. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Copy transport address and arm CQ before calling rdma_acceptTom Tucker
This race was found by inspection. Messages can be received from the peer immediately following the rdma_accept call, however, the CQ have not yet been armed and the transport address has not yet been set. Set the transport address in the connect request handler and arm the CQ prior to calling rdma_accept. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Set rqstp transport address in rdma_read_complete functionTom Tucker
The rdma_read_complete function needs to copy the rqstp transport address from the transport. Failure to do so can result in using the wrong authentication method for the RPC or bug checking if the rqstp address is not valid. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Use ib verbs version of dma_unmapTom Tucker
Use the ib_verbs version of the dma_unmap service in the svc_rdma_put_context function. This should support providers using software rdma. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Cleanup queued, but unprocessed I/O in svc_rdma_freeTom Tucker
When the transport is closing, the DTO tasklet may queue data that never gets processed. Clean up resources associated with this I/O. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Move the QP and cm_id destruction to svc_rdma_freeTom Tucker
Move the destruction of the QP and CM_ID to the free path so that the QP cleanup code doesn't race with the dto_tasklet handling flushed WR. The QP reference is not needed because we now have a reference for every WR. Also add a guard in the SQ and RQ completion handlers to ignore calls generated by some providers when the QP is destroyed. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Add reference for each SQ/RQ WRTom Tucker
Add a reference on the transport for every outstanding WR. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Move destroy to kernel threadTom Tucker
Some providers may wait while destroying adapter resources. Since it is possible that the last reference is put on the dto_tasklet, the actual destroy must be scheduled as a work item. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Shrink scope of spinlock on RQ CQTom Tucker
The rq_cq_reap function is only called from the dto_tasklet. The only resource shared with other threads is the sc_rq_dto_q. Move the spin lock to protect only this list. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Use standard Linux lists for context cacheTom Tucker
Replace the one-off linked list implementation used to implement the context cache with the standard Linux list_head lists. Add a context counter to catch resource leaks. A WARN_ON will be added later to ensure that we've freed all contexts. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
2008-05-19svcrdma: Simplify RDMA_READ deferral buffer managementTom Tucker
An NFS_WRITE requires a set of RDMA_READ requests to fetch the write data from the client. There are two principal pieces of data that need to be tracked: the list of pages that comprise the completed RPC and the SGE of dma mapped pages to refer to this list of pages. Previously this whole bit was managed as a linked list of contexts with the context containing the page list buried in this list. This patch simplifies this processing by not keeping a linked list, but rather only a pionter from the last submitted RDMA_READ's context to the context that maps the set of pages that describe the RPC. This significantly simplifies this code path. SGE contexts are cleaned up inline in the DTO path instead of at read completion time. Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 04:13:18 +0000