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* 8250_pci: add support for National Instruments legacy 8420 RS232 boardsWill Page2009-04-061-0/+12
| | | | | | | Signed-off-by: Will Page <will.page@ni.com> Signed-off-by: Shawn Bohrer <shawn.bohrer@ni.com> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 8250_pci: add support for National Instruments 843x RS232 devicesShawn Bohrer2009-04-061-0/+14
| | | | | | | | | | This implements basic support for all 843x RS232 devices, but does not add DMA support. This means that sustained data transfers at high baud rates may not be possible on multiple ports simultaneously. Signed-off-by: Shawn Bohrer <shawn.bohrer@ni.com> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.infradead.org/iommu-2.6Linus Torvalds2009-04-062-0/+24
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/iommu-2.6: drivers/pci/intr_remapping.c: include acpi.h intel-iommu: Fix oops in device_to_iommu() when devices not found. intel-iommu: Handle PCI domains appropriately. intel-iommu: Fix device-to-iommu mapping for PCI-PCI bridges. x2apic/intr-remap: decouple interrupt remapping from x2apic x86, dmar: check if it's initialized before disable queue invalidation intel-iommu: set compatibility format interrupt Intel IOMMU Suspend/Resume Support - Interrupt Remapping Intel IOMMU Suspend/Resume Support - Queued Invalidation Intel IOMMU Suspend/Resume Support - DMAR intel-iommu: Add for_each_iommu() and for_each_active_iommu() macros
| * intel-iommu: Handle PCI domains appropriately.David Woodhouse2009-04-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | We were comparing {bus,devfn} and assuming that a match meant it was the same device. It doesn't -- the same {bus,devfn} can exist in multiple PCI domains. Include domain number in device identification (and call it 'segment' in most places, because there's already a lot of references to 'domain' which means something else, and this code is infected with ACPI thinking already). Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * intel-iommu: set compatibility format interruptHan, Weidong2009-04-031-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When extended interrupt mode (x2apic mode) is not supported in a system, it must set compatibility format interrupt to bypass interrupt remapping, otherwise compatibility format interrupts will be blocked. This will be used when interrupt remapping is enabled while x2apic is not supported. Signed-off-by: Weidong Han <weidong.han@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * Intel IOMMU Suspend/Resume Support - Interrupt RemappingFenghua Yu2009-04-031-0/+2
| | | | | | | | | | | | | | | | | | | | This patch enables suspend/resume for interrupt remapping. During suspend, interrupt remapping is disabled. When resume, interrupt remapping is enabled again. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * Intel IOMMU Suspend/Resume Support - DMARFenghua Yu2009-04-031-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | This patch implements the suspend and resume feature for Intel IOMMU DMAR. It hooks to kernel suspend and resume interface. When suspend happens, it saves necessary hardware registers. When resume happens, it restores the registers and restarts IOMMU by enabling translation, setting up root entry, and re-enabling queued invalidation. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * intel-iommu: Add for_each_iommu() and for_each_active_iommu() macrosDavid Woodhouse2009-04-031-0/+8
| | | | | | | | | | Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'locking-for-linus' of ↵Linus Torvalds2009-04-062-0/+6
|\ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: lockdep: add stack dumps to asserts hrtimer: fix rq->lock inversion (again)
| * | hrtimer: fix rq->lock inversion (again)Peter Zijlstra2009-03-312-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It appears I inadvertly introduced rq->lock recursion to the hrtimer_start() path when I delegated running already expired timers to softirq context. This patch fixes it by introducing a __hrtimer_start_range_ns() method that will not use raise_softirq_irqoff() but __raise_softirq_irqoff() which avoids the wakeup. It then also changes schedule() to check for pending softirqs and do the wakeup then, I'm not quite sure I like this last bit, nor am I convinced its really needed. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: paulus@samba.org LKML-Reference: <20090313112301.096138802@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge branch 'kmemtrace-for-linus' of ↵Linus Torvalds2009-04-0611-183/+92
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kmemtrace: trace kfree() calls with NULL or zero-length objects kmemtrace: small cleanups kmemtrace: restore original tracing data binary format, improve ABI kmemtrace: kmemtrace_alloc() must fill type_id kmemtrace: use tracepoints kmemtrace, rcu: don't include unnecessary headers, allow kmemtrace w/ tracepoints kmemtrace, rcu: fix rcupreempt.c data structure dependencies kmemtrace, rcu: fix rcu_tree_trace.c data structure dependencies kmemtrace, rcu: fix linux/rcutree.h and linux/rcuclassic.h dependencies kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_unlzma.c kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_bunzip2.c kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_inflate.c kmemtrace, squashfs: fix slab.h dependency problem in squasfs kmemtrace, befs: fix slab.h dependency problem kmemtrace, security: fix linux/key.h header file dependencies kmemtrace, fs: fix linux/fdtable.h header file dependencies kmemtrace, fs: uninline simple_transaction_set() kmemtrace, fs, security: move alloc_secdata() and free_secdata() to linux/security.h
| * | | kmemtrace: use tracepointsEduard - Gabriel Munteanu2009-04-033-65/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kmemtrace now uses tracepoints instead of markers. We no longer need to use format specifiers to pass arguments. Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> [ folded: Use the new TP_PROTO and TP_ARGS to fix the build. ] [ folded: fix build when CONFIG_KMEMTRACE is disabled. ] [ folded: define tracepoints when CONFIG_TRACEPOINTS is enabled. ] Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> LKML-Reference: <ae61c0f37156db8ec8dc0d5778018edde60a92e3.1237813499.git.eduard.munteanu@linux360.ro> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | kmemtrace, rcu: don't include unnecessary headers, allow kmemtrace w/ ↵Eduard - Gabriel Munteanu2009-04-034-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | tracepoints Impact: cleanup linux/percpu.h includes linux/slab.h, which generates circular inclusion dependencies when trying to switch kmemtrace to use tracepoints instead of markers. This patch allows tracing within slab headers' inline functions. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | kmemtrace, rcu: fix rcupreempt.c data structure dependenciesIngo Molnar2009-04-031-42/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We want to remove percpu.h from rcupreempt.h, but if we do that the percpu primitives there wont build anymore. Move them to the .c file instead. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | kmemtrace, rcu: fix linux/rcutree.h and linux/rcuclassic.h dependenciesIngo Molnar2009-04-032-37/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: build fix for all non-x86 architectures We want to remove percpu.h from rcuclassic.h/rcutree.h (for upcoming kmemtrace changes) but that would break the DECLARE_PER_CPU based declarations in these files. Move the quiescent counter management functions to their respective RCU implementation .c files - they were slightly above the inlining limit anyway. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | kmemtrace, security: fix linux/key.h header file dependenciesPekka Enberg2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We want to remove percpu.h from rcupdate.h (for upcoming kmemtrace changes), but this is not possible currently without breaking the build because key.h has an implicit include file dependency on rwsem.h: CC [M] fs/cifs/cifs_spnego.o In file included from include/keys/user-type.h:15, from fs/cifs/cifs_spnego.c:24: include/linux/key.h:128: error: field ‘sem’ has incomplete type make[2]: *** [fs/cifs/cifs_spnego.o] Error 1 make[1]: *** [fs/cifs] Error 2 make: *** [fs] Error 2 Fix it by making the dependency explicit. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237884886.25315.39.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | kmemtrace, fs: fix linux/fdtable.h header file dependenciesIngo Molnar2009-04-031-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We want to remove percpu.h from rcupdate.h (for upcoming kmemtrace changes), but this is not possible currently without breaking the build because fdtable.h has an implicit include file dependency: it uses __init does not include init.h. This can cause build failures on non-x86 architectures: /home/mingo/tip/include/linux/fdtable.h:66: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'files_defer_init' make[2]: *** [fs/locks.o] Error 1 We got this header included indirectly via rcupdate.h's percpu.h inclusion - but if that is not there the build will break. Fix it. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | kmemtrace, fs: uninline simple_transaction_set()Ingo Molnar2009-04-031-13/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We want to remove percpu.h from rcupdate.h (for upcoming kmemtrace changes), but this is not possible currently without breaking the build because fs.h has an implicit include file depedency: it uses PAGE_SIZE but does not include asm/page.h which defines it. This problem gets masked in practice because most fs.h using sites use rcupreempt.h (and other headers) which includes percpu.h which brings in asm/page.h indirectly. We cannot add asm/page.h to asm/fs.h because page.h is not an exported header. Move simple_transaction_set() to the other simple-transaction file helpers in fs/libfs.c. This removes the include file hell and also reduces kernel size a bit. Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: paulmck@linux.vnet.ibm.com LKML-Reference: <1237898630.25315.83.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | kmemtrace, fs, security: move alloc_secdata() and free_secdata() to ↵Pekka Enberg2009-04-032-21/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | linux/security.h Impact: cleanup We want to remove percpu.h from rcupdate.h (for upcoming kmemtrace changes), but this is not possible currently without breaking the build because fs.h has implicit include file depedencies: it uses GFP_* types in inlines but does not include gfp.h. In practice most fs.h using .c files get gfp.h included implicitly, via an indirect route: via rcupdate.h inclusion - so this underlying problem gets masked in practice. So we want to solve fs.h's dependency on gfp.h. gfp.h can not be included here directly because it is not exported and it would break the build the following way: /home/mingo/tip/usr/include/linux/bsg.h:11: found __[us]{8,16,32,64} type without #include <linux/types.h> /home/mingo/tip/usr/include/linux/fs.h:11: included file 'linux/gfp.h' is not exported make[3]: *** [/home/mingo/tip/usr/include/linux/.check] Error 1 make[2]: *** [linux] Error 2 As suggested by Alexey Dobriyan, move alloc_secdata() and free_secdata() to linux/security.h - they belong there. This also cleans fs.h of GFP_* usage. Suggested-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237906803.25315.96.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | Merge branch 'for-2.6.30' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2009-04-0612-138/+543
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.30' of git://linux-nfs.org/~bfields/linux: (81 commits) nfsd41: define nfsd4_set_statp as noop for !CONFIG_NFSD_V4 nfsd41: define NFSD_DRC_SIZE_SHIFT in set_max_drc nfsd41: Documentation/filesystems/nfs41-server.txt nfsd41: CREATE_EXCLUSIVE4_1 nfsd41: SUPPATTR_EXCLCREAT attribute nfsd41: support for 3-word long attribute bitmask nfsd: dynamically skip encoded fattr bitmap in _nfsd4_verify nfsd41: pass writable attrs mask to nfsd4_decode_fattr nfsd41: provide support for minor version 1 at rpc level nfsd41: control nfsv4.1 svc via /proc/fs/nfsd/versions nfsd41: add OPEN4_SHARE_ACCESS_WANT nfs4_stateid bmap nfsd41: access_valid nfsd41: clientid handling nfsd41: check encode size for sessions maxresponse cached nfsd41: stateid handling nfsd: pass nfsd4_compound_state* to nfs4_preprocess_{state,seq}id_op nfsd41: destroy_session operation nfsd41: non-page DRC for solo sequence responses nfsd41: Add a create session replay cache nfsd41: create_session operation ...
| * | | | nfsd41: define nfsd4_set_statp as noop for !CONFIG_NFSD_V4Benny Halevy2009-04-061-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes following modpost error: ERROR: "nfsd4_set_statp" [fs/nfsd/nfsd.ko] undefined! Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: define NFSD_DRC_SIZE_SHIFT in set_max_drcBenny Halevy2009-04-061-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes the following compiler error: fs/nfsd/nfssvc.c: In function 'set_max_drc': fs/nfsd/nfssvc.c:240: error: 'NFSD_DRC_SIZE_SHIFT' undeclared CONFIG_NFSD_V4 is not set Reported-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: CREATE_EXCLUSIVE4_1Benny Halevy2009-04-032-7/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the CREATE_EXCLUSIVE4_1 open mode conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 This mode allows the client to atomically create a file if it doesn't exist while setting some of its attributes. It must be implemented if the server supports persistent reply cache and/or pnfs. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: SUPPATTR_EXCLCREAT attributeBenny Halevy2009-04-032-1/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Return bitmask for supported EXCLUSIVE4_1 create attributes. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: support for 3-word long attribute bitmaskAndy Adamson2009-04-032-8/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also, use client minorversion to generate supported attrs Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: provide support for minor version 1 at rpc levelMarc Eshel2009-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: control nfsv4.1 svc via /proc/fs/nfsd/versionsBenny Halevy2009-04-031-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support enabling and disabling nfsv4.1 via /proc/fs/nfsd/versions by writing the strings "+4.1" or "-4.1" correspondingly. Use user mode nfs-utils (rpc.nfsd option) to enable. This will allow us to get rid of CONFIG_NFSD_V4_1 [nfsd41: disable support for minorversion by default] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: access_validAndy Adamson2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For nfs41, the open share flags are used also for delegation "wants" and "signals". Check that they are valid. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: stateid handlingAndy Adamson2009-04-032-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When sessions are used, stateful operation sequenceid and stateid handling are not used. When sessions are used, on the first open set the seqid to 1, mark state confirmed and skip seqid processing. When sessionas are used the stateid generation number is ignored when it is zero whereas without sessions bad_stateid or stale stateid is returned. Add flags to propagate session use to all stateful ops and down to check_stateid_generation. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Andy Adamson <andros@netapp.com> [nfsd4_has_session should return a boolean, not u32] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: pass nfsd4_compoundres * to nfsd4_process_open1] [nfsd41: calculate HAS_SESSION in nfs4_preprocess_stateid_op] [nfsd41: calculate HAS_SESSION in nfs4_preprocess_seqid_op] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd: pass nfsd4_compound_state* to nfs4_preprocess_{state,seq}id_opBenny Halevy2009-04-031-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we only use cstate->current_fh, will also be used by nfsd41 code. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: destroy_session operationBenny Halevy2009-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the destory_session operation confoming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 [use sessionid_lock spin lock] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: non-page DRC for solo sequence responsesAndy Adamson2009-04-032-1/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A session inactivity time compound (lease renewal) or a compound where the sequence operation has sa_cachethis set to FALSE do not require any pages to be held in the v4.1 DRC. This is because struct nfsd4_slot is already caching the session information. Add logic to the nfs41 server to not cache response pages for solo sequence responses. Return nfserr_replay_uncached_rep on the operation following the sequence operation when sa_cachethis is FALSE. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use cstate session in nfsd4_replay_cache_entry] [nfsd41: rename nfsd4_no_page_in_cache] [nfsd41 rename nfsd4_enc_no_page_replay] [nfsd41 nfsd4_is_solo_sequence] [nfsd41 change nfsd4_not_cached return] Signed-off-by: Andy Adamson <andros@netapp.com> [changed return type to bool] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41 drop parens in nfsd4_is_solo_sequence call] Signed-off-by: Andy Adamson <andros@netapp.com> [changed "== 0" to "!"] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: Add a create session replay cacheAndy Adamson2009-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the nfs4_client cl_seqid field with a single struct nfs41_slot used for the create session replay cache. The CREATE_SESSION slot sets the sl_session pointer to NULL. Otherwise, the slot and it's replay cache are used just like the session slots. Fix unconfirmed create_session replay response by initializing the create_session slot sequence id to 0. A future patch will set the CREATE_SESSION cache when a SEQUENCE operation preceeds the CREATE_SESSION operation. This compound is currently only cached in the session slot table. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use bool inuse for slot state] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: revert portion of nfsd4_set_cache_entry] Signed-off-by: Andy Adamson <andros@netpp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: create_session operationAndy Adamson2009-04-032-2/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the create_session operation confoming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Look up the client id (generated by the server on exchange_id, given by the client on create_session). If neither a confirmed or unconfirmed client is found then the client id is stale If a confirmed cilent is found (i.e. we already received create_session for it) then compare the sequence id to determine if it's a replay or possibly a mis-ordered rpc. If the seqid is in order, update the confirmed client seqid and procedd with updating the session parameters. If an unconfirmed client_id is found then verify the creds and seqid. If both match move the client id to confirmed state and proceed with processing the create_session. Currently, we do not support persistent sessions, and RDMA. alloc_init_session generates a new sessionid and creates a session structure. NFSD_PAGES_PER_SLOT is used for the max response cached calculation, and for the counting of DRC pages using the hard limits set in struct srv_serv. A note on NFSD_PAGES_PER_SLOT: Other patches in this series allow for NFSD_PAGES_PER_SLOT + 1 pages to be cached in a DRC slot when the response size is less than NFSD_PAGES_PER_SLOT * PAGE_SIZE but xdr_buf pages are used. e.g. a READDIR operation will encode a small amount of data in the xdr_buf head, and then the READDIR in the xdr_buf pages. So, the hard limit calculation use of pages by a session is underestimated by the number of cached operations using the xdr_buf pages. Yet another patch caches no pages for the solo sequence operation, or any compound where cache_this is False. So the hard limit calculation use of pages by a session is overestimated by the number of these operations in the cache. TODO: improve resource pre-allocation and negotiate session parameters accordingly. Respect and possibly adjust backchannel attributes. Signed-off-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> [nfsd41: remove headerpadsz from channel attributes] Our client and server only support a headerpadsz of 0. [nfsd41: use DRC limits in fore channel init] [nfsd41: do not change CREATE_SESSION back channel attrs] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [use sessionid_lock spin lock] [nfsd41: use bool inuse for slot state] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41 remove sl_session from alloc_init_session] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [simplify nfsd4_encode_create_session error handling] [nfsd41: fix comment style in init_forechannel_attrs] [nfsd41: allocate struct nfsd4_session and slot table in one piece] [nfsd41: no need to INIT_LIST_HEAD in alloc_init_session just prior to list_add] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: nfsd DRC logicAndy Adamson2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replay a request in nfsd4_sequence. Add a minorversion to struct nfsd4_compound_state. Pass the current slot to nfs4svc_encode_compound res via struct nfsd4_compoundres to set an NFSv4.1 DRC entry. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use bool inuse for slot state] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use cstate session in nfs4svc_encode_compoundres] [nfsd41 replace nfsd4_set_cache_entry] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: hard page limit for DRCAndy Adamson2009-04-032-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use no more than 1/128th of the number of free pages at nfsd startup for the v4.1 DRC. This is an arbitrary default which should probably end up under the control of an administrator. Signed-off-by: Andy Adamson <andros@netapp.com> [moved added fields in struct svc_serv under CONFIG_NFSD_V4_1] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [fix set_max_drc calculation of sv_drc_max_pages] [moved NFSD_DRC_SIZE_SHIFT's declaration up in header file] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: DRC save, restore, and clear functionsAndy Adamson2009-04-033-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cache all the result pages, including the rpc header in rq_respages[0], for a request in the slot table cache entry. Cache the statp pointer from nfsd_dispatch which points into rq_respages[0] just past the rpc header. When setting a cache entry, calculate and save the length of the nfs data minus the rpc header for rq_respages[0]. When replaying a cache entry, replace the cached rpc header with the replayed request rpc result header, unless there is not enough room in the cached results first page. In that case, use the cached rpc header. The sessions fore channel maxresponse size cached is set to NFSD_PAGES_PER_SLOT * PAGE_SIZE. For compounds we are cacheing with operations such as READDIR that use the xdr_buf->pages to hold data, we choose to cache the extra page of data rather than copying data from xdr_buf->pages into the xdr_buf->head page. [nfsd41: limit cache to maxresponsesize_cached] [nfsd41: mv nfsd4_set_statp under CONFIG_NFSD_V4_1] [nfsd41: rename nfsd4_move_pages] [nfsd41: rename page_no variable] [nfsd41: rename nfsd4_set_cache_entry] [nfsd41: fix nfsd41_copy_replay_data comment] [nfsd41: add to nfsd4_set_cache_entry] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: sequence operationBenny Halevy2009-04-031-1/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the sequence operation conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Check for stale clientid (as derived from the sessionid). Enforce slotid range and exactly-once semantics using the slotid and seqid. If everything went well renew the client lease and mark the slot INPROGRESS. Add a struct nfsd4_slot pointer to struct nfsd4_compound_state. To be used for sessions DRC replay. [nfsd41: rename sequence catchthis to cachethis] Signed-off-by: Andy Adamson<andros@netapp.com> [pulled some code to set cstate->slot from "nfsd DRC logic"] [use sessionid_lock spin lock] [nfsd41: use bool inuse for slot state] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd: add a struct nfsd4_slot pointer to struct nfsd4_compound_state] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: add nfsd4_session pointer to nfsd4_compound_state] [nfsd41: set cstate session] [nfsd41: use cstate session in nfsd4_sequence] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [simplify nfsd4_encode_sequence error handling] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: match clientid establishment methodAndy Adamson2009-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to distinguish between client names provided by NFSv4.0 clients SETCLIENTID and those provided by NFSv4.1 via EXCHANGE_ID when looking up the clientid by string. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Andy Adamson <andros@netapp.com> [nfsd41: use boolean values for use_exchange_id argument] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: simplify match_clientid_establishment logic] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: exchange_id operationAndy Adamson2009-04-032-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the exchange_id operation confoming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-28 Based on the client provided name, hash a client id. If a confirmed one is found, compare the op's creds and verifier. If the creds match and the verifier is different then expire the old client (client re-incarnated), otherwise, if both match, assume it's a replay and ignore it. If an unconfirmed client is found, then copy the new creds and verifer if need update, otherwise assume replay. The client is moved to a confirmed state on create_session. In the nfs41 branch set the exchange_id flags to EXCHGID4_FLAG_USE_NON_PNFS | EXCHGID4_FLAG_SUPP_MOVED_REFER (pNFS is not supported, Referrals are supported, Migration is not.). Address various scenarios from section 18.35 of the spec: 1. Check for EXCHGID4_FLAG_UPD_CONFIRMED_REC_A and set EXCHGID4_FLAG_CONFIRMED_R as appropriate. 2. Return error codes per 18.35.4 scenarios. 3. Update client records or generate new client ids depending on scenario. Note: 18.35.4 case 3 probably still needs revisiting. The handling seems not quite right. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Andy Adamosn <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use utsname for major_id (and copy to server_scope)] [nfsd41: fix handling of various exchange id scenarios] Signed-off-by: Mike Sager <sager@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: reverse use of EXCHGID4_INVAL_FLAG_MASK_A] [simplify nfsd4_encode_exchange_id error handling] [nfsd41: embed an xdr_netobj in nfsd4_exchange_id] [nfsd41: return nfserr_serverfault for spa_how == SP4_MACH_CRED] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: proc stubsAndy Adamson2009-04-031-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: xdr infrastructureAndy Adamson2009-04-031-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Define nfsd41_dec_ops vector and add it to nfsd4_minorversion for minorversion 1. Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 since we don't need to filter out obsolete ops as this is done in the decoding phase. exchange_id, create_session, destroy_session, and sequence ops are implemented as stubs returning nfserr_opnotsupp at this stage. [was nfsd41: xdr stubs] [get rid of CONFIG_NFSD_V4_1] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: sessionid hashingMarc Eshel2009-04-031-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simple sessionid hashing using its monotonically increasing sequence number. Locking considerations: sessionid_hashtbl access is controlled by the sessionid_lock spin lock. It must be taken for insert, delete, and lookup. nfsd4_sequence looks up the session id and if the session is found, it calls nfsd4_get_session (still under the sessionid_lock). nfsd4_destroy_session calls nfsd4_put_session after unhashing it, so when the session's kref reaches zero it's going to get freed. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [we don't use a prime for sessionid hash table size] [use sessionid_lock spin lock] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: introduce nfs4_client cl_sessions listMarc Eshel2009-04-031-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [get rid of CONFIG_NFSD_V4_1] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: sessions basic data typesAndy Adamson2009-04-031-0/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch provides basic data structures representing the nfs41 sessions and slots, plus helpers for keeping a reference count on the session and freeing it. Note that our server only support a headerpadsz of 0 and it ignores backchannel attributes at the moment. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: remove headerpadsz from channel attributes] [nfsd41: embed nfsd4_channel in nfsd4_session] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: use bool inuse for slot state] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41 remove sl_session from nfsd4_slot] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd41: define nfs41 error codesMarc Eshel2009-04-032-2/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Define all error code present in http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-29. Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: clean up error code definitions] [nfsd41: change NFSERR_REPLAY_ME] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfs41: common protocol definitionsBenny Halevy2009-04-031-1/+127
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Define all NFSv4.1 common operation and error code constants. Note that some of the definitions are used by both the nfs41 client and the server code. This patch is duplicated in the nfs41 and nfsd41 sessions patchset. Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: add exchange id flags] Signed-off-by: Mike Sager <sager@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [removed server-only hunk changing NFSERR_REPLAY_ME] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: add SEQ4_XX to nfs41-common-protocol] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: generic error code update] [nfs41: reverse EXCHGID4_INVAL_FLAG_MASK_{A,R}] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd: don't use the deferral service, return NFS4ERR_DELAYAndy Adamson2009-04-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On an NFSv4.1 server cache miss that causes an upcall, NFS4ERR_DELAY will be returned. It is up to the NFSv4.1 client to resend only the operations that have not been processed. Initialize rq_usedeferral to 1 in svc_process(). It sill be turned off in nfsd4_proc_compound() only when NFSv4.1 Sessions are used. Note: this isn't an adequate solution on its own. It's acceptable as a way to get some minimal 4.1 up and working, but we're going to have to find a way to avoid returning DELAY in all common cases before 4.1 can really be considered ready. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: reverse rq_nodeferral negative logic] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [sunrpc: initialize rq_usedeferral] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | nfsd: embed nfsd4_current_state in nfsd4_compoundresAndy Adamson2009-03-291-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the allocation of struct nfsd4_compound_state. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | | | Fix a build warning about leaking CONFIG_NFSD to userspace.Greg Banks2009-03-271-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a build warning about leaking CONFIG_NFSD to userspace. The nfsd_stats data structure does not need to be available to userspace; no kernel interface uses it. So move it inside #ifdef __KERNEL__ and the warning goes away. Signed-off-by: Greg Banks <gnb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
generated by cgit (git 2.34.1) at 2024-11-11 14:26:51 +0000