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path: root/fs/nfs/callback_xdr.c
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2026-04-22nfs: use memcpy_and_pad in decode_fhThorsten Blum
Use memcpy_and_pad() instead of memcpy() followed by memset() to simplify decode_fh(). Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2026-02-22Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL usesKees Cook
Conversion performed via this Coccinelle script: // SPDX-License-Identifier: GPL-2.0-only // Options: --include-headers-for-types --all-includes --include-headers --keep-comments virtual patch @gfp depends on patch && !(file in "tools") && !(file in "samples")@ identifier ALLOC = {kmalloc_obj,kmalloc_objs,kmalloc_flex, kzalloc_obj,kzalloc_objs,kzalloc_flex, kvmalloc_obj,kvmalloc_objs,kvmalloc_flex, kvzalloc_obj,kvzalloc_objs,kvzalloc_flex}; @@ ALLOC(... - , GFP_KERNEL ) $ make coccicheck MODE=patch COCCI=gfp.cocci Build and boot tested x86_64 with Fedora 42's GCC and Clang: Linux version 6.19.0+ (user@host) (gcc (GCC) 15.2.1 20260123 (Red Hat 15.2.1-7), GNU ld version 2.44-12.fc42) #1 SMP PREEMPT_DYNAMIC 1970-01-01 Linux version 6.19.0+ (user@host) (clang version 20.1.8 (Fedora 20.1.8-4.fc42), LLD 20.1.8) #1 SMP PREEMPT_DYNAMIC 1970-01-01 Signed-off-by: Kees Cook <kees@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-21Convert 'alloc_obj' family to use the new default GFP_KERNEL argumentLinus Torvalds
This was done entirely with mindless brute force, using git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' | xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/' to convert the new alloc_obj() users that had a simple GFP_KERNEL argument to just drop that argument. Note that due to the extreme simplicity of the scripting, any slightly more complex cases spread over multiple lines would not be triggered: they definitely exist, but this covers the vast bulk of the cases, and the resulting diff is also then easier to check automatically. For the same reason the 'flex' versions will be done as a separate conversion. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-21treewide: Replace kmalloc with kmalloc_obj for non-scalar typesKees Cook
This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org>
2026-01-30NFS: Merge CONFIG_NFS_V4_1 with CONFIG_NFS_V4Anna Schumaker
Compiling the NFSv4 module without any minorversion support doesn't make much sense, so this patch sets NFS v4.1 as the default, always enabled NFS version allowing us to replace all the CONFIG_NFS_V4_1s scattered throughout the code with CONFIG_NFS_V4. Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
2025-01-06nfsd: don't use sv_nrthreads in connection limiting calculations.NeilBrown
The heuristic for limiting the number of incoming connections to nfsd currently uses sv_nrthreads - allowing more connections if more threads were configured. A future patch will allow number of threads to grow dynamically so that there will be no need to configure sv_nrthreads. So we need a different solution for limiting connections. It isn't clear what problem is solved by limiting connections (as mentioned in a code comment) but the most likely problem is a connection storm - many connections that are not doing productive work. These will be closed after about 6 minutes already but it might help to slow down a storm. This patch adds a per-connection flag XPT_PEER_VALID which indicates that the peer has presented a filehandle for which it has some sort of access. i.e the peer is known to be trusted in some way. We now only count connections which have NOT been determined to be valid. There should be relative few of these at any given time. If the number of non-validated peer exceed a limit - currently 64 - we close the oldest non-validated peer to avoid having too many of these useless connections. Note that this patch significantly changes the meaning of the various configuration parameters for "max connections". The next patch will remove all of these. Signed-off-by: NeilBrown <neilb@suse.de> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-10-03SUNRPC: Fix integer overflow in decode_rc_list()Dan Carpenter
The math in "rc_list->rcl_nrefcalls * 2 * sizeof(uint32_t)" could have an integer overflow. Add bounds checking on rc_list->rcl_nrefcalls to fix that. Fixes: 4aece6a19cf7 ("nfs41: cb_sequence xdr implementation") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
2024-08-22nfs: fix bitmap decoder to handle a 3rd wordJeff Layton
It only decodes the first two words at this point. Have it decode the third word as well. Without this, the client doesn't send delegated timestamps in the CB_GETATTR response. With this change we also need to expand the on-stack bitmap in decode_recallany_args to 3 elements, in case the server sends a larger bitmap than expected. Fixes: 43df7110f4a9 ("NFSv4: Add CB_GETATTR support for delegated attributes") Signed-off-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2024-07-08NFSv4: Add CB_GETATTR support for delegated attributesTrond Myklebust
When the client holds an attribute delegation, the server may retrieve all the timestamps through a CB_GETATTR callback. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Lance Shelton <lance.shelton@hammerspace.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2024-01-04NFSv4.1: Use the nfs_client's rpc timeouts for backchannelBenjamin Coddington
For backchannel requests that lookup the appropriate nfs_client, use the state-management rpc_clnt's rpc_timeout parameters for the backchannel's response. When the nfs_client cannot be found, fall back to using the xprt's default timeout parameters. Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Tested-by: Chuck Lever <chuck.lever@oracle.com> Tested-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2023-02-20SUNRPC: Use per-CPU counters to tally server RPC countsChuck Lever
- Improves counting accuracy - Reduces cross-CPU memory traffic Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2023-02-20SUNRPC: Refactor RPC server dispatch methodChuck Lever
Currently, svcauth_gss_accept() pre-reserves response buffer space for the RPC payload length and GSS sequence number before returning to the dispatcher, which then adds the header's accept_stat field. The problem is the accept_stat field is supposed to go before the length and seq_num fields. So svcauth_gss_release() has to relocate the accept_stat value (see svcauth_gss_prepare_to_wrap()). To enable these fields to be added to the response buffer in the correct (final) order, the pointer to the accept_stat has to be made available to svcauth_gss_accept() so that it can set it before reserving space for the length and seq_num fields. As a first step, move the pointer to the location of the accept_stat field into struct svc_rqst. Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2023-02-20SUNRPC: Push svcxdr_init_encode() into svc_process_common()Chuck Lever
Now that all vs_dispatch functions invoke svcxdr_init_encode(), it is common code and can be pushed down into the generic RPC server. Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2023-02-20SUNRPC: Push svcxdr_init_decode() into svc_process_common()Chuck Lever
Now that all vs_dispatch functions invoke svcxdr_init_decode(), it is common code and can be pushed down into the generic RPC server. Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2022-09-26SUNRPC: Parametrize how much of argsize should be zeroedChuck Lever
Currently, SUNRPC clears the whole of .pc_argsize before processing each incoming RPC transaction. Add an extra parameter to struct svc_procedure to enable upper layers to reduce the amount of each operation's argument structure that is zeroed by SUNRPC. The size of struct nfsd4_compoundargs, in particular, is a lot to clear on each incoming RPC Call. A subsequent patch will cut this down to something closer to what NFSv2 and NFSv3 uses. This patch should cause no behavior changes. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2022-03-13NFS: remove unneeded check in decode_devicenotify_args()Alexey Khoroshilov
[You don't often get email from khoroshilov@ispras.ru. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.] Overflow check in not needed anymore after we switch to kmalloc_array(). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Fixes: a4f743a6bb20 ("NFSv4.1: Convert open-coded array allocation calls to kmalloc_array()") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2022-01-06NFSv4.1: Fix uninitialised variable in devicenotifyTrond Myklebust
When decode_devicenotify_args() exits with no entries, we need to ensure that the struct cb_devicenotifyargs is initialised to { 0, NULL } in order to avoid problems in nfs4_callback_devicenotify(). Reported-by: <rtm@csail.mit.edu> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2021-10-13SUNRPC: Change return value type of .pc_encodeChuck Lever
Returning an undecorated integer is an age-old trope, but it's not clear (even to previous experts in this code) that the only valid return values are 1 and 0. These functions do not return a negative errno, rpc_stat value, or a positive length. Document there are only two valid return values by having .pc_encode return only true or false. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-10-13SUNRPC: Replace the "__be32 *p" parameter to .pc_encodeChuck Lever
The passed-in value of the "__be32 *p" parameter is now unused in every server-side XDR encoder, and can be removed. Note also that there is a line in each encoder that sets up a local pointer to a struct xdr_stream. Passing that pointer from the dispatcher instead saves one line per encoder function. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-08-10NFS: Clean up the synopsis of callback process_op()Chuck Lever
The xdr_stream and rq_arg and rq_res are already accessible via the @rqstp parameter. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2021-08-10NFS: Extract the xdr_init_encode/decode() calls from decode_compoundChuck Lever
Clean up: Move the xdr_init_encode() and xdr_init_decode() calls into the dispatcher, just like the NFSD and lockd dispatchers. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2021-08-10NFS: Remove unused callback void decoderChuck Lever
Clean up: The callback RPC dispatcher no longer invokes these call outs, although svc_process_common() relies on seeing a .pc_encode function. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2021-08-10NFS: Add a private local dispatcher for NFSv4 callback operationsChuck Lever
The client's NFSv4 callback service is the only remaining user of svc_generic_dispatch(). Note that the NFSv4 callback service doesn't use the .pc_encode and .pc_decode callouts in any substantial way, so they are removed. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2021-08-10SUNRPC: Eliminate the RQ_AUTHERR flagChuck Lever
Now that there is an alternate method for returning an auth_stat value, replace the RQ_AUTHERR flag with use of that new method. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2021-01-25SUNRPC: Make trace_svc_process() display the RPC procedure symbolicallyChuck Lever
The next few patches will employ these strings to help make server- side trace logs more human-readable. A similar technique is already in use in kernel RPC client code. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-01-15NFS4: Report callback authentication errorsChuck Lever
This seems to be a somewhat common issue with Kerberos NFSv4.0 set-ups. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2019-11-03NFSv4: NFSv4 callbacks also support 64-bit timestampsTrond Myklebust
Convert the NFSv4 callbacks to use struct timestamp64, rather than truncating times to 32-bit values. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2019-04-24SUNRPC/nfs: Fix return value for nfs4_callback_compound()Trond Myklebust
RPC server procedures are normally expected to return a __be32 encoded status value of type 'enum rpc_accept_stat', however at least one function wants to return an authentication status of type 'enum rpc_auth_stat' in the case where authentication fails. This patch adds functionality to allow this. Fixes: a4e187d83d88 ("NFS: Don't drop CB requests with invalid principals") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2019-02-13NFS: Remove print_overflow_msg()Chuck Lever
This issue is now captured by a trace point in the RPC client. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2019-02-13SUNRPC: Add xdr_stream::rqst fieldChuck Lever
Having access to the controlling rpc_rqst means a trace point in the XDR code can report: - the XID - the task ID and client ID - the p_name of RPC being processed Subsequent patches will introduce such trace points. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-08-09NFS CB_OFFLOAD xdrOlga Kornievskaia
Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-07-31NFSv4.0 fix client reference leak in callbackOlga Kornievskaia
If there is an error during processing of a callback message, it leads to refrence leak on the client structure and eventually an unclean superblock. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-04-10NFSv4: Clean up CB_GETATTR encodingTrond Myklebust
Replace the open coded bitmap implementation with a generic one. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-13Merge tag 'nfsd-4.13' of git://linux-nfs.org/~bfields/linuxLinus Torvalds
Pull nfsd updates from Bruce Fields: "Chuck's RDMA update overhauls the "call receive" side of the RPC-over-RDMA transport to use the new rdma_rw API. Christoph cleaned the way nfs operations are declared, removing a bunch of function-pointer casts and declaring the operation vectors as const. Christoph's changes touch both client and server, and both client and server pulls this time around should be based on the same commits from Christoph" * tag 'nfsd-4.13' of git://linux-nfs.org/~bfields/linux: (53 commits) svcrdma: fix an incorrect check on -E2BIG and -EINVAL nfsd4: factor ctime into change attribute svcrdma: Remove svc_rdma_chunk_ctxt::cc_dir field svcrdma: use offset_in_page() macro svcrdma: Clean up after converting svc_rdma_recvfrom to rdma_rw API svcrdma: Clean-up svc_rdma_unmap_dma svcrdma: Remove frmr cache svcrdma: Remove unused Read completion handlers svcrdma: Properly compute .len and .buflen for received RPC Calls svcrdma: Use generic RDMA R/W API in RPC Call path svcrdma: Add recvfrom helpers to svc_rdma_rw.c sunrpc: Allocate up to RPCSVC_MAXPAGES per svc_rqst svcrdma: Don't account for Receive queue "starvation" svcrdma: Improve Reply chunk sanity checking svcrdma: Improve Write chunk sanity checking svcrdma: Improve Read chunk sanity checking svcrdma: Remove svc_rdma_marshal.c svcrdma: Avoid Send Queue overflow svcrdma: Squelch disconnection messages sunrpc: Disable splice for krb5i ...
2017-06-27NFSv4.1: nfs4_callback_free_slot() cannot call nfs4_slot_tbl_drain_complete()Trond Myklebust
The current code works only for the case where we have exactly one slot, which is no longer true. nfs4_free_slot() will automatically declare the callback channel to be drained when all slots have been returned. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-05-15sunrpc: mark all struct svc_version instances as constChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-05-15sunrpc: mark all struct svc_procinfo instances as constChristoph Hellwig
struct svc_procinfo contains function pointers, and marking it as constant avoids it being able to be used as an attach vector for code injections. Signed-off-by: Christoph Hellwig <hch@lst.de>
2017-05-15sunrpc: move pc_count out of struct svc_procinfoChristoph Hellwig
pc_count is the only writeable memeber of struct svc_procinfo, which is a good candidate to be const-ified as it contains function pointers. This patch moves it into out out struct svc_procinfo, and into a separate writable array that is pointed to by struct svc_version. Signed-off-by: Christoph Hellwig <hch@lst.de>
2017-05-15sunrpc: properly type pc_encode callbacksChristoph Hellwig
Drop the resp argument as it can trivially be derived from the rqstp argument. With that all functions now have the same prototype, and we can remove the unsafe casting to kxdrproc_t. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-05-15sunrpc: properly type pc_decode callbacksChristoph Hellwig
Drop the argp argument as it can trivially be derived from the rqstp argument. With that all functions now have the same prototype, and we can remove the unsafe casting to kxdrproc_t. Signed-off-by: Christoph Hellwig <hch@lst.de>
2017-05-15sunrpc: properly type pc_func callbacksChristoph Hellwig
Drop the argp and resp arguments as they can trivially be derived from the rqstp argument. With that all functions now have the same prototype, and we can remove the unsafe casting to svc_procfunc as well as the svc_procfunc typedef itself. Signed-off-by: Christoph Hellwig <hch@lst.de>
2017-05-15nfs: don't cast callback decode/proc/encode routinesChristoph Hellwig
Instead declare all functions with the proper methods signature. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jeff Layton <jlayton@redhat.com> Acked-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-04-20NFS: Remove extra dprintk()s from callback_xdr.cAnna Schumaker
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-04-20NFS: Clean up encode_cb_sequence_res()Anna Schumaker
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-04-20NFS: Clean up decode_notify_lock_args()Anna Schumaker
Let's cut out the goto and return any errors immedately Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-04-20NFS: Clean up decode_cb_sequence_args()Anna Schumaker
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-04-20NFS: Clean up decode_layoutrecall_args()Anna Schumaker
Additionally, this change lets us cut out the goto by returning errors immediately. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-04-20NFS: Clean up decode_recall_args()Anna Schumaker
Removing the dprintk() lets us simplify the function by returning status codes directly, rather than using a goto. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-04-20NFS: Clean up decode_getattr_args()Anna Schumaker
Removing the dprintk() lets us return the status value directly, rather than jumping to a label if an error occurs. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>