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* 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-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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