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* SUNRPC: Add a structure to track multiple transportsTrond Myklebust2016-02-061-1/+2
| | | | | | | | In order to support multipathing/trunking we will need the ability to track multiple transports. This patch sets up a basic structure for doing so. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* Merge tag 'nfs-for-4.2-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds2015-07-021-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NFS client updates from Trond Myklebust: "Highlights include: Stable patches: - Fix a crash in the NFSv4 file locking code. - Fix an fsync() regression, where we were failing to retry I/O in some circumstances. - Fix an infinite loop in NFSv4.0 OPEN stateid recovery - Fix a memory leak when an attempted pnfs fails. - Fix a memory leak in the backchannel code - Large hostnames were not supported correctly in NFSv4.1 - Fix a pNFS/flexfiles bug that was impeding error reporting on I/O. - Fix a couple of credential issues in pNFS/flexfiles Bugfixes + cleanups: - Open flag sanity checks in the NFSv4 atomic open codepath - More NFSv4 delegation related bugfixes - Various NFSv4.1 backchannel bugfixes and cleanups - Fix the NFS swap socket code - Various cleanups of the NFSv4 SETCLIENTID and EXCHANGE_ID code - Fix a UDP transport deadlock issue Features: - More RDMA client transport improvements - NFSv4.2 LAYOUTSTATS functionality for pnfs flexfiles" * tag 'nfs-for-4.2-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (87 commits) nfs: Remove invalid tk_pid from debug message nfs: Remove invalid NFS_ATTR_FATTR_V4_REFERRAL checking in nfs4_get_rootfh nfs: Drop bad comment in nfs41_walk_client_list() nfs: Remove unneeded micro checking of CONFIG_PROC_FS nfs: Don't setting FILE_CREATED flags always nfs: Use remove_proc_subtree() instead remove_proc_entry() nfs: Remove unused argument in nfs_server_set_fsinfo() nfs: Fix a memory leak when meeting an unsupported state protect nfs: take extra reference to fl->fl_file when running a LOCKU operation NFSv4: When returning a delegation, don't reclaim an incompatible open mode. NFSv4.2: LAYOUTSTATS is optional to implement NFSv4.2: Fix up a decoding error in layoutstats pNFS/flexfiles: Fix the reset of struct pgio_header when resending pNFS/flexfiles: Turn off layoutcommit for servers that don't need it pnfs/flexfiles: protect ktime manipulation with mirror lock nfs: provide pnfs_report_layoutstat when NFS42 is disabled nfs: verify open flags before allowing open nfs: always update creds in mirror, even when we have an already connected ds nfs: fix potential credential leak in ff_layout_update_mirror_cred pnfs/flexfiles: report layoutstat regularly ...
| * SUNRPC: Clean up bc_send()Chuck Lever2015-06-021-1/+1
| | | | | | | | | | | | | | | | | | Clean up: Merge bc_send() into bc_svc_process(). Note: even thought this touches svc.c, it is a client-side change. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | rpcrdma: Merge svcrdma and xprtrdma modules into oneChuck Lever2015-06-041-2/+1
|/ | | | | | | | | | | | | | | | | | | | | | | Bi-directional RPC support means code in svcrdma.ko invokes a bit of code in xprtrdma.ko, and vice versa. To avoid loader/linker loops, merge the server and client side modules together into a single module. When backchannel capabilities are added, the combined module will register all needed transport capabilities so that Upper Layer consumers automatically have everything needed to create a bi-directional transport connection. Module aliases are added for backwards compatibility with user space, which still may expect svcrdma.ko or xprtrdma.ko to be present. This commit reverts commit 2e8c12e1b765 ("xprtrdma: add separate Kconfig options for NFSoRDMA client and server support") and provides a single CONFIG option for enabling the new module. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* sunrpc: add debugfs file for displaying client rpc_task queueJeff Layton2014-11-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | It's possible to get a dump of the RPC task queue by writing a value to /proc/sys/sunrpc/rpc_debug. If you write any value to that file, you get a dump of the RPC client task list into the log buffer. This is a rather inconvenient interface however, and makes it hard to get immediate info about the task queue. Add a new directory hierarchy under debugfs: sunrpc/ rpc_clnt/ <clientid>/ Within each clientid directory we create a new "tasks" file that will dump info similar to what shows up in the log buffer, but with a few small differences -- we avoid printing raw kernel addresses in favor of symbolic names and the XID is also displayed. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* xprtrdma: add separate Kconfig options for NFSoRDMA client and server supportJeff Layton2014-03-281-1/+2
| | | | | | | | | There are two entirely separate modules under xprtrdma/ and there's no reason that enabling one should automatically enable the other. Add config options for each one so they can be enabled/disabled separately. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* SUNRPC: sunrpc should not explicitly depend on NFS config optionsTrond Myklebust2011-07-151-1/+1
| | | | | | | | Change explicit references to CONFIG_NFS_V4_1 to implicit ones Get rid of the unnecessary defines in backchannel_rqst.c and bc_svc.c: the Makefile takes care of those dependency. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Provide functions for managing universal addressesChuck Lever2009-08-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | Introduce a set of functions in the kernel's RPC implementation for converting between a socket address and either a standard presentation address string or an RPC universal address. The universal address functions will be used to encode and decode RPCB_FOO and NFSv4 SETCLIENTID arguments. The other functions are part of a previous promise to deliver shared functions that can be used by upper-layer protocols to display and manipulate IP addresses. The kernel's current address printf formatters were designed specifically for kernel to user-space APIs that require a particular string format for socket addresses, thus are somewhat limited for the purposes of sunrpc.ko. The formatter for IPv6 addresses, %pI6, does not support short-handing or scope IDs. Also, these printf formatters are unique per address family, so a separate formatter string is required for printing AF_INET and AF_INET6 addresses. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: Backchannel callback service helper routinesRicardo Labiaga2009-06-171-1/+1
| | | | | | | | | | | | | | | | | Executes the backchannel task on the RPC state machine using the existing open connection previously established by the client. Signed-off-by: Ricardo Labiaga <ricardo.labiaga@netapp.com> nfs41: Add bc_svc.o to sunrpc Makefile. [nfs41: bc_send() does not need to be exported outside RPC module] [nfs41: xprt_free_bc_request() need not be exported outside RPC module] Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [Update copyright] Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
* nfs41: New backchannel helper routinesRicardo Labiaga2009-06-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces support to setup the callback xprt on the client side. It allocates/ destroys the preallocated memory structures used to process backchannel requests. At setup time, xprt_setup_backchannel() is invoked to allocate one or more rpc_rqst structures and substructures. This ensures that they are available when an RPC callback arrives. The rpc_rqst structures are maintained in a linked list attached to the rpc_xprt structure. We keep track of the number of allocations so that they can be correctly removed when the channel is destroyed. When an RPC callback arrives, xprt_alloc_bc_request() is invoked to obtain a preallocated rpc_rqst structure. An rpc_xprt structure is returned, and its RPC_BC_PREALLOC_IN_USE bit is set in rpc_xprt->bc_flags. The structure is removed from the the list since it is now in use, and it will be later added back when its user is done with it. After the RPC callback replies, the rpc_rqst structure is returned by invoking xprt_free_bc_request(). This clears the RPC_BC_PREALLOC_IN_USE bit and adds it back to the list, allowing it to be reused by a subsequent RPC callback request. To be consistent with the reception of RPC messages, the backchannel requests should be placed into the 'struct rpc_rqst' rq_rcv_buf, which is then in turn copied to the 'struct rpc_rqst' rq_private_buf. [nfs41: Preallocate rpc_rqst receive buffer for handling callbacks] Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [Update copyright notice and explain page allocation] Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
* SUNRPC: Add a generic RPC credentialTrond Myklebust2008-03-141-1/+1
| | | | | | | | | Add an rpc credential that is not tied to any particular auth mechanism, but that can be cached by NFS, and later used to look up a cred for whichever auth mechanism that turns out to be valid when the RPC call is being made. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* svc: Add an svc transport classTom Tucker2008-02-011-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | The transport class (svc_xprt_class) represents a type of transport, e.g. udp, tcp, rdma. A transport class has a unique name and a set of transport operations kept in the svc_xprt_ops structure. A transport class can be dynamically registered and unregisterd. The svc_xprt_class represents the module that implements the transport type and keeps reference counts on the module to avoid unloading while there are active users. The endpoint (svc_xprt) is a generic, transport independent endpoint that can be used to send and receive data for an RPC service. It inherits it's operations from the transport class. A transport driver module registers and unregisters itself with svc sunrpc by calling svc_reg_xprt_class, and svc_unreg_xprt_class respectively. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Acked-by: Neil Brown <neilb@suse.de> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Greg Banks <gnb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* RPCRDMA: rpc rdma transport switch\"Talpey, Thomas\2007-10-091-0/+1
| | | | | | | | | | This implements the configuration and building of the core transport switch implementation of the rpcrdma transport. Stubs are provided for the rpcrdma protocol handling, and the infiniband/iwarp verbs interface. These are provided in following patches. Signed-off-by: Tom Talpey <talpey@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: remove old portmapperChuck Lever2007-05-011-1/+1
| | | | | | | net/sunrpc/pmap_clnt.c has been replaced by net/sunrpc/rpcb_clnt.c. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: introduce rpcbind: replacement for in-kernel portmapperChuck Lever2007-05-011-1/+1
| | | | | | | | | | | | | | Introduce a replacement for the in-kernel portmapper client that supports all 3 versions of the rpcbind protocol. This code is not used yet. Original code by Groupe Bull updated for the latest kernel, with multiple bug fixes. Note that rpcb_clnt.c does not yet support registering via versions 3 and 4 of the rpcbind protocol. That is planned for a later patch. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] RPC: introduce client-side transport switchChuck Lever2005-09-231-1/+1
| | | | | | | | | | | | | | | 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>
* [PATCH] RPC: extract socket logic common to both client and serverChuck Lever2005-09-231-1/+1
| | | | | | | | | | | | | | Clean-up: Move some code that is common to both RPC client- and server-side socket transports into its own source file, net/sunrpc/socklib.c. Test-plan: Compile kernel with CONFIG_NFS enabled. Millions of fsx operations over UDP, client and server. Connectathon over UDP. Version: Thu, 11 Aug 2005 16:03:09 -0400 Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-171-0/+15
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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