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2006-12-06SUNRPC: skb_read_bits is the same as xs_tcp_copy_dataChuck Lever
Clean-up: eliminate xs_tcp_copy_data -- it's exactly the same logic as the common routine skb_read_bits. The UDP and TCP socket read code now share the same routine for copying data into an xdr_buf. Now that skb_read_bits() is exported, rename it to avoid confusing it with a generic skb_* function. As these functions are XDR-specific, they should not have names that suggest they are of generic use. Also rename skb_read_and_csum_bits() to be consistent. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Make address format buffers more genericChuck Lever
For now we will assume that all transports will use the address format buffers in the rpc_xprt struct to store their addresses. Change rpc_peer2str() to be a generic routine to handle this, and get rid of the print_address() op in the rpc_xprt_ops vector. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: move saved socket callback functions to a private data structureChuck Lever
Move the three fields for saving socket callback functions out of the rpc_xprt structure and into a private data structure maintained in net/sunrpc/xprtsock.c. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Move the UDP socket bufsize parameters to a private data structureChuck Lever
Move the socket-specific buffer size parameters for UDP sockets to a private data structure maintained in net/sunrpc/xprtsock.c. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Move rpc_xprt socket connect fields into private data structureChuck Lever
Move the socket-specific connection management fields out of the generic rpc_xprt structure into a private data structure maintained in net/sunrpc/xprtsock.c. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Move TCP state flags into xprtsock.cChuck Lever
Move "XPRT_LAST_FRAG" and friends from xprt.h into xprtsock.c, and rename them to use the naming scheme in use in xprtsock.c. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Move TCP receive state variables into private data structureChuck Lever
Move the TCP receive state variables from the generic rpc_xprt structure to a private structure maintained inside net/sunrpc/xprtsock.c. Also rename a function/variable pair to refer to RPC fragment headers instead of record markers, to be consistent with types defined in sunrpc/*.h. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Remove sock and inet fields from rpc_xprtChuck Lever
The "sock" and "inet" fields are socket-specific. Move them to a private data structure maintained entirely within net/sunrpc/xprtsock.c Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Allocate a private data area for socket-specific rpc_xprt fieldsChuck Lever
When setting up a new transport instance, allocate enough memory for an rpc_xprt and a private area. As part of the same memory allocation, it will be easy to find one, given a pointer to the other. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpcgss: krb5: miscellaneous cleanupJ. Bruce Fields
Miscellaneous cosmetic fixes. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpcgss: krb5: ignore seedJ. Bruce Fields
We're currently not actually using seed or seed_init. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpcgss: krb5: sanity check sealalg value in the downcallJ. Bruce Fields
The sealalg is checked in several places, giving the impression it could be either SEAL_ALG_NONE or SEAL_ALG_DES. But in fact SEAL_ALG_NONE seems to be sufficient only for making mic's, and all the contexts we get must be capable of wrapping as well. So the sealalg must be SEAL_ALG_DES. As with signalg, just check for the right value on the downcall and ignore it otherwise. Similarly, tighten expectations for the sealalg on incoming tokens, in case we do support other values eventually. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpcgss: krb5: clean up some goto's, etc.J. Bruce Fields
Remove some unnecessary goto labels; clean up some return values; etc. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpcgss: simplify make_checksumJ. Bruce Fields
We're doing some pointless translation between krb5 constants and kernel crypto string names. Also clean up some related spkm3 code as necessary. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpcgss: krb5: kill checksum_type, miscellaneous small cleanupJ. Bruce Fields
Previous changes reveal some obvious cruft. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpcgss: krb5: expect a constant signalg valueJ. Bruce Fields
We also only ever receive one value of the signalg, so let's not pretend otherwise Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06gss: krb5: remove signalg and sealalgJ. Bruce Fields
We designed the krb5 context import without completely understanding the context. Now it's clear that there are a number of fields that we ignore, or that we depend on having one single value. In particular, we only support one value of signalg currently; so let's check the signalg field in the downcall (in case we decide there's something else we could support here eventually), but ignore it otherwise. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpc: spkm3 updateOlga Kornievskaia
This updates the spkm3 code to bring it up to date with our current understanding of the spkm3 spec. In doing so, we're changing the downcall format used by gssd in the spkm3 case, which will cause an incompatilibity with old userland spkm3 support. Since the old code a) didn't implement the protocol correctly, and b) was never distributed except in the form of some experimental patches from the citi web site, we're assuming this is OK. We do detect the old downcall format and print warning (and fail). We also include a version number in the new downcall format, to be used in the future in case any further change is required. In some more detail: - fix integrity support - removed dependency on NIDs. instead OIDs are used - known OID values for algorithms added. - fixed some context fields and types Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpc: move process_xdr_bufOlga Kornievskaia
Since process_xdr_buf() is useful outside of the kerberos-specific code, we move it to net/sunrpc/xdr.c, export it, and rename it in keeping with xdr_* naming convention of xdr.c. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpc: gss: fix a kmap_atomic race in krb5 codeJ. Bruce Fields
This code is never called from interrupt context; it's always run by either a user thread or rpciod. So KM_SKB_SUNRPC_DATA is inappropriate here. Thanks to Aimé Le Rouzic for capturing an oops which showed the kernel taking an interrupt while we were in this piece of code, resulting in a nested kmap_atomic(.,KM_SKB_SUNRPC_DATA) call from xdr_partial_copy_from_skb(). Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06rpc: gss: eliminate print_hexl()'sJ. Bruce Fields
Dumping all this data to the logs is wasteful (even when debugging is turned off), and creates too much output to be useful when it's turned on. Fix a minor style bug or two while we're at it. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: another pmap wakeup fixChuck Lever
Don't wake up bind waiters if a task finds that another task is already trying to bind. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Clean up calls to mark_inode_dirty() part 2Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Fix up writeback_control->nr_to_write accountingTrond Myklebust
We're really accounting for the same page twice now: once in generic_writepages(), and once in nfs_scan_dirty(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Fix up the dirty page accountingTrond Myklebust
There is now no reason to account for the dirty pages in the NFS code, since the VM code will now do it for us via __set_page_dirty_nobuffers(), and set_page_writeback(). We still need to keep the accounting of stable writes, though. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Ensure the inode is marked as dirty if we break out of nfs_wb_all()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Fix nfs_release_pageTrond Myklebust
invalidate_inode_pages2_range() will clear the PG_dirty bit before calling try_to_release_page(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Ensure we only call set_page_writeback() under the page lockTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Make nfs_updatepage() mark the page as dirty.Trond Myklebust
This will ensure that we can call set_page_writeback() from within nfs_writepage(), which is always called with the page lock set. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Ensure that nfs_wb_page() calls writepage when necessary.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Add nfs_set_page_dirty()Trond Myklebust
We will want to allow nfs_writepage() to distinguish between pages that have been marked as dirty by the VM, and those that have been marked as dirty by nfs_updatepage(). In the former case, the entire page will want to be written out, and so any requests that were pending need to be flushed out first. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Remove nfs_writepage_sync()Trond Myklebust
Maintaining two parallel ways of doing synchronous writes is rather pointless. This patch gets rid of the legacy nfs_writepage_sync(), and replaces it with the faster asynchronous writes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: More cleanups of fs/nfs/write.cTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Remove call to igrab() from nfs_writepage()Trond Myklebust
We always ensure that the nfs_open_context holds a reference to the dentry, so the test in nfs_writepage() for whether or not the inode is referenced is redundant. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Cleanup: add common helper nfs_page_length()Trond Myklebust
Clean up a lot of ad-hoc page length calculations in fs/nfs/write.c Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Store pointer to the nfs_page in page->privateTrond Myklebust
This will allow fast lookup of the nfs_page from the struct page instead of having to search the radix tree. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: cleanup of nfs_sync_inode_wait()Trond Myklebust
Allow callers to directly pass it a struct writeback_control. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Clean up nfs_scan_dirty()Trond Myklebust
Pass down struct writeback control. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Clean up nfs_flush_inode()Trond Myklebust
Make it take a struct writepages argument, and rename to nfs_flush_mapping(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Make the transport-specific setup routine allocate rpc_xprtChuck Lever
Change the location where the rpc_xprt structure is allocated so each transport implementation can allocate a private area from the same chunk of memory. Note also that xprt->ops->destroy, rather than xprt_destroy, is now responsible for freeing rpc_xprt when the transport is destroyed. Test plan: Connectathon. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: minor optimization of "xid" field in rpc_xprtChuck Lever
Move the xid field in the rpc_xprt structure to be in the same cache line as the reserve_lock, since these are used at the same time. Test plan: None. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Clean up xs_send_pages()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Ensure xdr_buf_read_netobj() checks for memory overrunsTrond Myklebust
Also clean up the code... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Add __(read|write)_bytes_from_xdr_bufTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Clean up argument types in xdr.cTrond Myklebust
Converts various integer buffer offsets and sizes to unsigned integer. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Remove use of the Big Kernel Lock around nfs calls to readlinkFrank Filz
Remove use of the Big Kernel Lock around indirect calls to nfs3_proc_readlink and nfs4_proc_readlink, both of which basically call rpc_call_sync. Signed-off-by: Frank Filz <ffilz@us.ibm.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Remove use of the Big Kernel Lock around calls to rpc_call_syncFrank Filz
Remove use of the Big Kernel Lock around calls to rpc_call_sync. Signed-off-by: Frank Filz <ffilz@us.ibm.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06NFS: Remove use of the Big Kernel Lock around calls to rpc_execute.Frank Filz
Remove use of the Big Kernel Lock around calls to rpc_execute. Signed-off-by: Frank Filz <ffilz@us.ibm.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Remove BKL around the RPC socket operations etc.Trond Myklebust
All internal RPC client operations should no longer depend on the BKL, however lockd and NFS callbacks may still require it. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-12-06SUNRPC: Fix up missing BKL in asynchronous RPC callback functionsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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