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2006-03-20SUNRPC: Ensure rpc_call_async() always calls tk_ops->rpc_release()Trond Myklebust
Currently this will not happen if we exit before rpc_new_task() was called. Also fix up rpc_run_task() to do the same (for consistency). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20SUNRPC: Fix memory barriers for req->rq_receivedTrond Myklebust
We need to ensure that all writes to the XDR buffers are done before req->rq_received is visible to other processors. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20SUNRPC: Fix a 'Busy inodes' error in rpc_pipefsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20SUNRPC: provide a mechanism for collecting stats in the RPC clientChuck Lever
Add a simple mechanism for collecting stats in the RPC client. Stats are tabulated during xprt_release. Note that per_cpu shenanigans are not required here because the RPC client already serializes on the transport write lock. Test plan: Compile kernel with CONFIG_NFS enabled. Basic performance regression testing with high-speed networking and high performance server. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20SUNRPC: introduce per-task RPC iostatsChuck Lever
Account for various things that occur while an RPC task is executed. Separate timers for RPC round trip and RPC execution time show how long RPC requests wait in queue before being sent. Eventually these will be accumulated at xprt_release time in one place where they can be viewed from userland. Test plan: Compile kernel with CONFIG_NFS enabled. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20SUNRPC: more verbose output for rpc auth weak errorLevent Serinol
This patch adds server ip address to be printed out when "server requires stronger authentication" error occured. Signed-off-by: Levent Serinol <lserinol@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20SUNRPC: Ensure that rpc_mkpipe returns a refcounted dentryTrond Myklebust
If not, we cannot guarantee that idmap->idmap_dentry, gss_auth->dentry and clnt->cl_dentry are valid dentries. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-14[PATCH] SUNRPC: fix a NULL pointer dereference in net/sunrpc/clnt.cAdrian Bunk
The Coverity checker spotted this possible NULL pointer dereference in rpc_new_client(). Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[NET]: Remove more unneeded typecasts on *malloc()Kris Katterjohn
This removes more unneeded casts on the return value for kmalloc(), sock_kmalloc(), and vmalloc(). Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-10Fix rpc shutdown event condition bugLinus Torvalds
We want to wait for the cl_users to go down to zero, not for it to stay positive. Quoth Trond (who wasn't even the author, but acked the wrong version): "Argh! I need to increase my daily caffeine dosages." Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10[PATCH] nfs: sleep_on() removalIngo Molnar
Convert sleep_on() to wait_event_timeout(). Probably safe with the BKL but could be racy once BKL use in NFS-client is gone. Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06SUNRPC: get rid of cl_chattyChuck Lever
Clean up: Every ULP that uses the in-kernel RPC client, except the NLM client, sets cl_chatty. There's no reason why NLM shouldn't set it, so just get rid of cl_chatty and always be verbose. Test-plan: Compile with CONFIG_NFS enabled. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06SUNRPC: new interface to force an RPC rebindChuck Lever
We'd like to hide fields in rpc_xprt and rpc_clnt from upper layer protocols. Start by creating an API to force RPC rebind, replacing logic that simply sets cl_port to zero. Test-plan: Destructive testing (unplugging the network temporarily). Connectathon with UDP and TCP. NFSv2/3 and NFSv4 mounting should be carefully checked. Probably need to rig a server where certain services aren't running, or that returns an error for some typical operation. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06SUNRPC: switchable buffer allocationChuck Lever
Add RPC client transport switch support for replacing buffer management on a per-transport basis. In the current IPv4 socket transport implementation, RPC buffers are allocated as needed for each RPC message that is sent. Some transport implementations may choose to use pre-allocated buffers for encoding, sending, receiving, and unmarshalling RPC messages, however. For transports capable of direct data placement, the buffers can be carved out of a pre-registered area of memory rather than from a slab cache. Test-plan: Millions of fsx operations. Performance characterization with "sio" and "iozone". Use oprofile and other tools to look for significant regression in CPU utilization. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06SUNRPC: Ensure that SIGKILL will always terminate a synchronous RPC call.Trond Myklebust
...and make sure that the "intr" flag also enables SIGHUP and SIGTERM to interrupt RPC calls too (as per the Solaris implementation). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06SUNRPC: rpc_execute should not return task->tk_status;Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06RPC: Clean up RPC task structureTrond Myklebust
Shrink the RPC task structure. Instead of storing separate pointers for task->tk_exit and task->tk_release, put them in a structure. Also pass the user data pointer as a parameter instead of passing it via task->tk_calldata. This enables us to nest callbacks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-01-06SUNRPC: Yet more RPC cleanupsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-09[PATCH] SUNRPC: don't reencode when looping in call transmit.Trond Myklebust
If the call to xprt_transmit() fails due to socket buffer space exhaustion, we do not need to re-encode the RPC message when we loop back through call_transmit. Re-encoding can actually end up triggering the WARN_ON() in call_decode() if we re-encode something like a read() request and auth->au_rslack has changed. It can also cause us to increment the RPCSEC_GSS sequence number beyond the limits of the allowed window. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-18SUNRPC: Retry wrap in case of memory allocation failure.J. Bruce Fields
For privacy we need to allocate extra pages to hold encrypted page data when wrapping requests. This allocation may fail, and we handle that case by waiting and retrying. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18RPC: allow call_encode() to delay transmission of an RPC call.Trond Myklebust
Currently, call_encode will cause the entire RPC call to abort if it returns an error. This is unnecessarily rigid, and gets in the way of attempts to allow the NFSv4 layer to order RPC calls that carry sequence ids. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18SUNRPC: Retry rpcbind requests if the server's portmapper isn't upChuck Lever
After a server crash/reboot, rebinding should always retry, otherwise requests on "hard" mounts will fail when they shouldn't. Test plan: Run a lock-intensive workload against a server while rebooting the server repeatedly. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-09-23Revert "[PATCH] RPC,NFS: new rpc_pipefs patch"Trond Myklebust
This reverts 17f4e6febca160a9f9dd4bdece9784577a2f4524 commit.
2005-09-23[PATCH] RPC,NFS: new rpc_pipefs patchChristoph Hellwig
Currently rpc_mkdir/rpc_rmdir and rpc_mkpipe/mk_unlink have an API that's a little unfortunate. They take a path relative to the rpc_pipefs root and thus need to perform a full lookup. If you look at debugfs or usbfs they always store the dentry for directories they created and thus can pass in a dentry + single pathname component pair into their equivalents of the above functions. And in fact rpc_pipefs actually stores a dentry for all but one component so this change not only simplifies the core rpc_pipe code but also the callers. Unfortuntately this code path is only used by the NFS4 idmapper and AUTH_GSSAPI for which I don't have a test enviroment. Could someone give it a spin? It's the last bit needed before we can rework the lookup_hash API Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-09-23[PATCH] RPC: rationalize set_buffer_sizeChuck Lever
In fact, ->set_buffer_size should be completely functionless for non-UDP. Test-plan: Check socket buffer size on UDP sockets over time. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-09-23[PATCH] RPC: parametrize various transport connect timeoutsChuck Lever
Each transport implementation can now set unique bind, connect, reestablishment, and idle timeout values. These are variables, allowing the values to be modified dynamically. This permits exponential backoff of any of these values, for instance. As an example, we implement exponential backoff for the connection reestablishment timeout. Test-plan: Destructive testing (unplugging the network temporarily). Connectathon with UDP and TCP. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-09-23[PATCH] RPC: skip over transport-specific heads automaticallyChuck Lever
Add a generic mechanism for skipping over transport-specific headers when constructing an RPC request. This removes another "xprt->stream" dependency. Test-plan: Write-intensive workload on a single mount point (try both UDP and TCP). Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-09-23[PATCH] RPC: client-side transport switch cleanupChuck Lever
Clean-up: change some comments to reflect the realities of the new RPC transport switch mechanism. Get rid of unused xprt_receive() prototype. Also, organize function prototypes in xprt.h by usage and scope. Test-plan: Compile kernel with CONFIG_NFS enabled. Version: Thu, 11 Aug 2005 16:07:21 -0400 Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-09-23[PATCH] RPC: Eliminate socket.h includes in RPC clientChuck Lever
Clean-up: get rid of unnecessary socket.h and in.h includes in the generic parts of the RPC client. Test-plan: Compile kernel with CONFIG_NFS enabled. Version: Thu, 11 Aug 2005 16:06:23 -0400 Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-09-23[PATCH] RPC: introduce client-side transport switchChuck Lever
Move the bulk of client-side socket-specific code into a separate source file, net/sunrpc/xprtsock.c. Test-plan: Millions of fsx operations. Performance characterization such as "sio" or "iozone". Destructive testing (unplugging the network temporarily, server reboots). Connectathon with v2, v3, and v4. Version: Thu, 11 Aug 2005 16:03:38 -0400 Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-09-23[PATCH] RPC: proper soft timeout behavior for rpcbindChuck Lever
Implement a best practice: for soft mounts, an rpcbind timeout should cause an RPC request to fail. This also provides an FSM hook for retrying an rpcbind with a different rpcbind protocol version. We'll use this later to try multiple rpcbind protocol versions when binding. To enable this, expose the RPC error code returned during a portmap request to the FSM so it can make some decision about how to report, retry, or fail the request. Test-plan: Hundreds of passes with connectathon NFSv3 locking suite, on the client and server. Version: Thu, 11 Aug 2005 16:01:53 -0400 Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] RPC: Ensure rpc calls respects the RPC_NOINTR flagTrond Myklebust
For internal purposes, the rpc_clnt_sigmask() call is replaced by a call to rpc_task_sigmask(), which ensures that the current task sigmask respects both the client cl_intr flag and the per-task NOINTR flag. Problem noted by Jiaying Zhang. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] RPC: Allow multiple RPC client programs to share the same transportAndreas Gruenbacher
Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Olaf Kirch <okir@suse.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] RPC: Return -EPFNOSUPPORT for RPC programs that are unavailableAndreas Gruenbacher
Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Olaf Kirch <okir@suse.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] RPC: [PATCH] improve rpcauthauth_create error returnsJ. Bruce Fields
Currently we return -ENOMEM for every single failure to create a new auth. This is actually accurate for auth_null and auth_unix, but for auth_gss it's a bit confusing. Allow rpcauth_create (and the ->create methods) to return errors. With this patch, the user may sometimes see an EINVAL instead. Whee. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] RPC: Make rpc_create_client() probe server for RPC program+version ↵Trond Myklebust
support Ensure that we don't create an RPC client without checking that the server does indeed support the RPC program + version that we are trying to set up. This enables us to immediately return an error to "mount" if it turns out that the server is only supporting NFSv2, when we requested NFSv3 or NFSv4. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] RPC: Make rpc_create_client() destroy the transport on failure.Trond Myklebust
This saves us a couple of lines of cleanup code for each call. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22[PATCH] RPC: Ensure XDR iovec length is initialized correctly in call_headerTrond Myklebust
Fix up call_header() so that it calls xdr_adjust_iovec(). Fix calculation of the scratch buffer length in xdr_init_encode(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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