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* | RPC: Allow struc xdr_stream to read the page section of an xdr_bufTrond Myklebust2006-06-09
|/ | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS,SUNRPC: Fix compiler warnings if CONFIG_PROC_FS & CONFIG_SYSCTL are unsetTrond Myklebust2006-04-19
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: fix PROC_FS=n compile errorAdrian Bunk2006-04-19
| | | | | | | | | | | | | | fs/built-in.o: In function `nfs_show_stats':inode.c:(.text+0x15481a): undefined reference to `rpc_print_iostats' net/built-in.o: In function `rpc_destroy_client': undefined reference to `rpc_free_iostats' net/built-in.o: In function `rpc_clone_client': undefined reference to `rpc_alloc_iostats' net/built-in.o: In function `rpc_new_client': undefined reference to `rpc_alloc_iostats' net/built-in.o: In function `xprt_release': undefined reference to `rpc_count_iostats' make: *** [.tmp_vmlinux1] Error 1 Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] knfsd: svcrpc: WARN() instead of returning an error from svc_take_pageJ. Bruce Fields2006-04-11
| | | | | | | | | | | | | | | | | | Every caller of svc_take_page ignores its return value and assumes it succeeded. So just WARN() instead of returning an ignored error. This would have saved some time debugging a recent nfsd4 problem. If there are still failure cases here, then the result is probably that we overwrite an earlier part of the reply while xdr-encoding. While the corrupted reply is a nasty bug, it would be worse to panic here and create the possibility of a remote DOS; hence WARN() instead of BUG(). Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Cc: Ingo Oeser <ioe-lkml@rameria.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mark f_ops const in the inodeArjan van de Ven2006-03-28
| | | | | | | | | | | Mark the f_ops members of inodes as const, as well as fix the ripple-through this causes by places that copy this f_ops and then "do stuff" with it. Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fs/nfsd/export.c,net/sunrpc/cache.c: make needlessly global code staticAdrian Bunk2006-03-27
| | | | | | | | | | We can now make some code static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Neil Brown <neilb@suse.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Convert sunrpc_cache to use krefsNeilBrown2006-03-27
| | | | | | | | .. it makes some of the code nicer. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Unexport cache_fresh and fix a small raceNeilBrown2006-03-27
| | | | | | | | | | | | Cache_fresh is now only used in cache.c, so unexport it. Part of cache_fresh (setting CACHE_VALID) should really be done under the lock, while part (calling cache_revisit_request etc) must be done outside the lock. So we split it up appropriately. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Remove DefineCacheLookupNeilBrown2006-03-27
| | | | | | | | This has been replaced by more traditional code. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Create cache_lookup function instead of using a macro to ↵NeilBrown2006-03-27
| | | | | | | | | | | | declare one The C++-like 'template' approach proves to be too ugly and hard to work with. The old 'template' won't go away until all users are updated. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Get rid of 'inplace' sunrpc cachesNeilBrown2006-03-27
| | | | | | | | | These were an unnecessary wart. Also only have one 'DefineSimpleCache..' instead of two. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Change the store of auth_domains to not be a 'cache'NeilBrown2006-03-27
| | | | | | | | | | The 'auth_domain's are simply handles on internal data structures. They do not cache information from user-space, and forcing them into the mold of a 'cache' misrepresents their true nature and causes confusion. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'linus'Trond Myklebust2006-03-23
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| * [NET]: sem2mutex part 2Ingo Molnar2006-03-21
| | | | | | | | | | | | | | | | | | | | | | Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | SUNRPC,RPCSEC_GSS: fix krb5 sequence numbers.J. Bruce Fields2006-03-20
| | | | | | | | | | | | | | Use a spinlock to ensure unique sequence numbers when creating krb5 gss tokens. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | SUNRPC: Fix a 'Busy inodes' error in rpc_pipefsTrond Myklebust2006-03-20
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | SUNRPC: eliminate rpc_call()Chuck Lever2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean-up: replace rpc_call() helper with direct call to rpc_call_sync. This makes NFSv2 and NFSv3 synchronous calls more computationally efficient, and reduces stack consumption in functions that used to invoke rpc_call more than once. Test plan: Compile kernel with CONFIG_NFS enabled. Connectathon on NFS version 2, version 3, and version 4 mount points. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | SUNRPC: display human-readable procedure name in rpc_iostats outputChuck Lever2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add fields to the rpc_procinfo struct that allow the display of a human-readable name for each procedure in the rpc_iostats output. Also fix it so that the NFSv4 stats are broken up correctly by sub-procedure number. NFSv4 uses only two real RPC procedures: NULL, and COMPOUND. Test plan: Mount with NFSv2, NFSv3, and NFSv4, and do "cat /proc/self/mountstats". Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | SUNRPC: provide a mechanism for collecting stats in the RPC clientChuck Lever2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | SUNRPC: introduce per-task RPC iostatsChuck Lever2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | SUNRPC: add a handful of per-xprt countersChuck Lever2006-03-20
| | | | | | | | | | | | | | | | | | | | | | Monitor generic transport events. Add a transport switch callout to format transport counters for export to user-land. 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>
* | SUNRPC: track length of RPC wait queuesChuck Lever2006-03-20
| | | | | | | | | | | | | | | | | | | | | | RPC wait queue length will eventually be exported to userland via the RPC iostats interface. 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>
* | SUNRPC: Run rpci->queue_timeout on the rpciod workqueue instead of genericTrond Myklebust2006-03-20
|/ | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Remove obsolete rpcauth #definesTrond Myklebust2006-02-01
| | | | | | RPCAUTH_CRED_LOCKED, and RPC_AUTH_PROC_CREDS are unused. Kill them. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Move upcall out of auth->au_ops->crcreate()Trond Myklebust2006-02-01
| | | | | | | | | This fixes a bug whereby if two processes try to look up the same auth_gss credential, they may end up creating two creds, and triggering two upcalls because the upcall is performed before the credential is added to the credcache. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Fix a lock recursion in the auth_gss downcallTrond Myklebust2006-02-01
| | | | | | | | | | | | When we look up a new cred in the auth_gss downcall so that we can stuff the credcache, we do not want that lookup to queue up an upcall in order to initialise it. To do an upcall here not only redundant, but since we are already holding the inode->i_mutex, it will trigger a lock recursion. This patch allows rpcauth cache searches to indicate that they can cope with uninitialised credentials. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] svcrpc: save and restore the daddr field when request deferredJ. Bruce Fields2006-01-18
| | | | | | | | | | | | The server code currently keeps track of the destination address on every request so that it can reply using the same address. However we forget to do that in the case of a deferred request. Remedy this oversight. >From folks at PolyServe. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* SUNRPC: Update the spkm3 code to use the make_checksum interfaceJ. Bruce Fields2006-01-06
| | | | | | | | Also update the tokenlen calculations to accomodate g_token_size(). Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Ensure client closes the socket when server initiates a closeTrond Myklebust2006-01-06
| | | | | | | | | | | | If the server decides to close the RPC socket, we currently don't actually respond until either another RPC call is scheduled, or until xprt_autoclose() gets called by the socket expiry timer (which may be up to 5 minutes later). This patch ensures that xprt_autoclose() is called much sooner if the server closes the socket. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: get rid of cl_chattyChuck Lever2006-01-06
| | | | | | | | | | | | 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>
* SUNRPC: transport switch API for setting port numberChuck Lever2006-01-06
| | | | | | | | | | | | | | | At some point, transport endpoint addresses will no longer be IPv4. To hide the structure of the rpc_xprt's address field from ULPs and port mappers, add an API for setting the port number during an RPC bind operation. 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>
* SUNRPC: new interface to force an RPC rebindChuck Lever2006-01-06
| | | | | | | | | | | | | | | 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>
* SUNRPC: switchable buffer allocationChuck Lever2006-01-06
| | | | | | | | | | | | | | | | | | | | 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>
* SUNRPC: net/sunrpc/xdr.c: remove xdr_decode_string()Adrian Bunk2006-01-06
| | | | | | | | | This patch removes ths unused function xdr_decode_string(). Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Neil Brown <neilb@suse.de> Acked-by: Charles Lever <Charles.Lever@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: support large reads and writes on the wireChuck Lever2006-01-06
| | | | | | | | | | | | | | | | | Most NFS server implementations allow up to 64KB reads and writes on the wire. The Solaris NFS server allows up to a megabyte, for instance. Now the Linux NFS client supports transfer sizes up to 1MB, too. This will help reduce protocol and context switch overhead on read/write intensive NFS workloads, and support larger atomic read and write operations on servers that support them. Test-plan: Connectathon and iozone on mount point with wsize=rsize>32768 over TCP. Tests with NFS over UDP to verify the maximum RPC payload size cap. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: stateful NFSv4 RPC call interfaceTrond Myklebust2006-01-06
| | | | | | | | | | | | | | The NFSv4 model requires us to complete all RPC calls that might establish state on the server whether or not the user wants to interrupt it. We may also need to schedule new work (including new RPC calls) in order to cancel the new state. The asynchronous RPC model will allow us to ensure that RPC calls always complete, but in order to allow for "synchronous" RPC, we want to add the ability to wait for completion. The waits are, of course, interruptible. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Further cleanupsTrond Myklebust2006-01-06
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* RPC: Clean up RPC task structureTrond Myklebust2006-01-06
| | | | | | | | | | 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>
* SUNRPC: Yet more RPC cleanupsTrond Myklebust2006-01-06
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] knfsd: Fix some minor sign problems in nfsd/xdrNeilBrown2005-11-07
| | | | | | | | | | | | | There are a couple of tests which could possibly be confused by extremely large numbers appearing in 'xdr' packets. I think the closest to an exploit you could get would be writing random data from a free page into a file - i.e. leak data out of kernel space. I'm fairly sure they cannot be used for remote compromise. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* RPCSEC_GSS: krb5 cleanupJ. Bruce Fields2005-10-19
| | | | | | | Remove some senseless wrappers. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* RPCSEC_GSS remove all qop parametersJ. Bruce Fields2005-10-19
| | | | | | | | | Not only are the qop parameters that are passed around throughout the gssapi unused by any currently implemented mechanism, but there appears to be some doubt as to whether they will ever be used. Let's just kill them off for now. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* RPCSEC_GSS: Add support for privacy to krb5 rpcsec_gss mechanism.J. Bruce Fields2005-10-19
| | | | | | | Add support for privacy to the krb5 rpcsec_gss mechanism. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* RPCSEC_GSS: krb5 pre-privacy cleanupJ. Bruce Fields2005-10-19
| | | | | | | | | | | | | The code this was originally derived from processed wrap and mic tokens using the same functions. This required some contortions, and more would be required with the addition of xdr_buf's, so it's better to separate out the two code paths. In preparation for adding privacy support, remove the last vestiges of the old wrap token code. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* RPCSEC_GSS: cleanup au_rslack calculationJ. Bruce Fields2005-10-19
| | | | | | | | | | | | | | | | Various xdr encode routines use au_rslack to guess where the reply argument will end up, so we can set up the xdr_buf to recieve data into the right place for zero copy. Currently we calculate the au_rslack estimate when we check the verifier. Normally this only depends on the verifier size. In the integrity case we add a few bytes to allow for a length and sequence number. It's a bit simpler to calculate only the verifier size when we check the verifier, and delay the full calculation till we unwrap. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Provide a callback to allow free pages allocated during xdr encodingJ. Bruce Fields2005-10-19
| | | | | | | | | For privacy, we need to allocate pages to store the encrypted data (passed in pages can't be used without the risk of corrupting data in the page cache). So we need a way to free that memory after the request has been transmitted. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Add support for privacy to generic gss-api code.J. Bruce Fields2005-10-19
| | | | | | | | | Add support for privacy to generic gss-api code. This is dead code until we have both a mechanism that supports privacy and code in the client or server that uses it. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* RPC: allow call_encode() to delay transmission of an RPC call.Trond Myklebust2005-10-18
| | | | | | | | 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>
* Revert "[PATCH] RPC,NFS: new rpc_pipefs patch"Trond Myklebust2005-09-23
| | | | This reverts 17f4e6febca160a9f9dd4bdece9784577a2f4524 commit.
* [PATCH] RPC,NFS: new rpc_pipefs patchChristoph Hellwig2005-09-23
| | | | | | | | | | | | | | | | | | | | 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>
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