summaryrefslogtreecommitdiff
path: root/include
AgeCommit message (Collapse)Author
2020-12-01block: move the partition_meta_info to struct block_deviceChristoph Hellwig
Move the partition_meta_info to struct block_device in preparation for killing struct hd_struct. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01block: move the start_sect field to struct block_deviceChristoph Hellwig
Move the start_sect field to struct block_device in preparation of killing struct hd_struct. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01block: move disk stat accounting to struct block_deviceChristoph Hellwig
Move the dkstats and stamp field to struct block_device in preparation of killing struct hd_struct. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01block: remove the nr_sects field in struct hd_structChristoph Hellwig
Now that the hd_struct always has a block device attached to it, there is no need for having two size field that just get out of sync. Additionally the field in hd_struct did not use proper serialization, possibly allowing for torn writes. By only using the block_device field this problem also gets fixed. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Coly Li <colyli@suse.de> [bcache] Acked-by: Chao Yu <yuchao0@huawei.com> [f2fs] Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01block: simplify part_to_diskChristoph Hellwig
Now that struct hd_struct has a block_device pointer use that to find the disk. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01block: simplify the block device claiming interfaceChristoph Hellwig
Stop passing the whole device as a separate argument given that it can be trivially deducted and cleanup the !holder debug check. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01block: remove ->bd_containsChristoph Hellwig
Now that each hd_struct has a reference to the corresponding block_device, there is no need for the bd_contains pointer. Add a bdev_whole() helper to look up the whole device block_device struture instead. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01block: simplify bdev/disk lookup in blkdev_getChristoph Hellwig
To simplify block device lookup and a few other upcoming areas, make sure that we always have a struct block_device available for each disk and each partition, and only find existing block devices in bdget. The only downside of this is that each device and partition uses a little more memory. The upside will be that a lot of code can be simplified. With that all we need to look up the block device is to lookup the inode and do a few sanity checks on the gendisk, instead of the separate lookup for the gendisk. For blk-cgroup which wants to access a gendisk without opening it, a new blkdev_{get,put}_no_open low-level interface is added to replace the previous get_gendisk use. Note that the change to look up block device directly instead of the two step lookup using struct gendisk causes a subtile change in behavior: accessing a non-existing partition on an existing block device can now cause a call to request_module. That call is harmless, and in practice no recent system will access these nodes as they aren't created by udev and static /dev/ setups are unusual. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01block: remove i_bdevChristoph Hellwig
Switch the block device lookup interfaces to directly work with a dev_t so that struct block_device references are only acquired by the blkdev_get variants (and the blk-cgroup special case). This means that we now don't need an extra reference in the inode and can generally simplify handling of struct block_device to keep the lookups contained in the core block layer code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Coly Li <colyli@suse.de> [bcache] Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01init: refactor name_to_dev_tChristoph Hellwig
Split each case into a self-contained helper, and move the block dependent code entirely under the pre-existing #ifdef CONFIG_BLOCK. This allows to remove the blk_lookup_devt stub in genhd.h. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01block: add a bdev_kobj helperChristoph Hellwig
Add a little helper to find the kobject for a struct block_device. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Coly Li <colyli@suse.de> [bcache] Acked-by: David Sterba <dsterba@suse.com> [btrfs] Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01block: remove a duplicate __disk_get_part prototypeChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01fs: simplify freeze_bdev/thaw_bdevChristoph Hellwig
Store the frozen superblock in struct block_device to avoid the awkward interface that can return a sb only used a cookie, an ERR_PTR or NULL. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Chao Yu <yuchao0@huawei.com> [f2fs] Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01fs: remove get_super_thawed and get_super_exclusive_thawedChristoph Hellwig
Just open code the wait in the only caller of both functions. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-01pstore/blk: remove {un,}register_pstore_blkChristoph Hellwig
This interface is entirely unused, so remove them and various bits of unreachable code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20201016132047.3068029-4-hch@lst.de
2020-12-01block: move blk_rq_bio_prep() to linux/blk-mq.hChaitanya Kulkarni
This is a preparation patch to have minimal block layer request bio append functionality in the context of the NVMeOF Passthru driver which falls in the fast path and doesn't need calls from blk_rq_append_bio(). Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-12-01net: switch to storing KCOV handle directly in sk_buffMarco Elver
It turns out that usage of skb extensions can cause memory leaks. Ido Schimmel reported: "[...] there are instances that blindly overwrite 'skb->extensions' by invoking skb_copy_header() after __alloc_skb()." Therefore, give up on using skb extensions for KCOV handle, and instead directly store kcov_handle in sk_buff. Fixes: 6370cc3bbd8a ("net: add kcov handle to skb extensions") Fixes: 85ce50d337d1 ("net: kcov: don't select SKB_EXTENSIONS when there is no NET") Fixes: 97f53a08cba1 ("net: linux/skbuff.h: combine SKB_EXTENSIONS + KCOV handling") Link: https://lore.kernel.org/linux-wireless/20201121160941.GA485907@shredder.lan/ Reported-by: Ido Schimmel <idosch@idosch.org> Signed-off-by: Marco Elver <elver@google.com> Link: https://lore.kernel.org/r/20201125224840.2014773-1-elver@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-01net: sched: remove redundant 'rtnl_held' argumentVlad Buslov
Functions tfilter_notify_chain() and tcf_get_next_proto() are always called with rtnl lock held in current implementation. Moreover, attempting to call them without rtnl lock would cause a warning down the call chain in function __tcf_get_next_proto() that requires the lock to be held by callers. Remove the 'rtnl_held' argument in order to simplify the code and make rtnl lock requirement explicit. Signed-off-by: Vlad Buslov <vladbu@nvidia.com> Link: https://lore.kernel.org/r/20201127151205.23492-1-vladbu@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-01fpga: fpga-mgr: Add devm_fpga_mgr_register() APIMoritz Fischer
Add a devm_fpga_mgr_register() API that can be used to register a FPGA Manager that was created using devm_fpga_mgr_create(). Introduce a struct fpga_mgr_devres that makes the devres allocation a little bit more readable and gets reused for devm_fpga_mgr_create() devm_fpga_mgr_register(). Reviewed-by: Tom Rix <trix@redhat.com> Signed-off-by: Moritz Fischer <mdf@kernel.org> Link: https://lore.kernel.org/r/20201115195127.284487-2-mdf@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-01ACPICA: Update version to 20201113Bob Moore
ACPICA commit 090f0444238bd49f563bf80f4f3a863463dfdf78 Version 20201113. Link: https://github.com/acpica/acpica/commit/090f0444 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Erik Kaneda <erik.kaneda@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-12-01ACPICA: Add 5 new UUIDs to the known UUID tableBob Moore
All UUID entries are related to NVDIMM and the NFIT table. ACPICA commit c114a02798dd07ccc7e51ffa4365bf039a0dd8d5 Link: https://github.com/acpica/acpica/commit/c114a027 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Erik Kaneda <erik.kaneda@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-12-01Merge tag 'v5.10-rc6' into patchworkMauro Carvalho Chehab
Linux 5.10-rc6 * tag 'v5.10-rc6': (1815 commits) Linux 5.10-rc6 sock: set sk_err to ee_errno on dequeue from errq mptcp: fix NULL ptr dereference on bad MPJ net: openvswitch: fix TTL decrement action netlink message format perf probe: Change function definition check due to broken DWARF perf probe: Fix to die_entrypc() returns error correctly perf stat: Use proper cpu for shadow stats perf record: Synthesize cgroup events only if needed perf diff: Fix error return value in __cmd_diff() perf tools: Update copy of libbpf's hashmap.c x86/mce: Do not overwrite no_way_out if mce_end() fails kvm: x86/mmu: Fix get_mmio_spte() on CPUs supporting 5-level PT KVM: x86: Fix split-irqchip vs interrupt injection window request KVM: x86: handle !lapic_in_kernel case in kvm_cpu_*_extint usb: typec: stusb160x: fix power-opmode property with typec-power-opmode printk: finalize records with trailing newlines can: af_can: can_rx_unregister(): remove WARN() statement from list operation sanity check can: m_can: m_can_dev_setup(): add support for bosch mcan version 3.3.0 can: m_can: fix nominal bitiming tseg2 min for version >= 3.1 can: m_can: m_can_open(): remove IRQF_TRIGGER_FALLING from request_threaded_irq()'s flags ...
2020-12-01net, xdp, xsk: fix __sk_mark_napi_id_once napi_id errorDaniel Borkmann
Stephen reported the following build error for !CONFIG_NET_RX_BUSY_POLL built kernels: In file included from fs/select.c:32: include/net/busy_poll.h: In function 'sk_mark_napi_id_once': include/net/busy_poll.h:150:36: error: 'const struct sk_buff' has no member named 'napi_id' 150 | __sk_mark_napi_id_once_xdp(sk, skb->napi_id); | ^~ Fix it by wrapping a CONFIG_NET_RX_BUSY_POLL around the helpers. Fixes: b02e5a0ebb17 ("xsk: Propagate napi_id to XDP socket Rx path") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Björn Töpel <bjorn.topel@intel.com> Link: https://lore.kernel.org/linux-next/20201201190746.7d3357fb@canb.auug.org.au
2020-12-01netfilter: use actual socket sk for REJECT actionJan Engelhardt
True to the message of commit v5.10-rc1-105-g46d6c5ae953c, _do_ actually make use of state->sk when possible, such as in the REJECT modules. Reported-by: Minqiang Chen <ptpt52@gmail.com> Cc: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Jan Engelhardt <jengelh@inai.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-12-01regulator: da9121: Add support for device variants via devicetreeAdam Ward
Add devicetree configuration and device variant parameters. Use the latter to enable the check and use of parameters specific to dual buck variants. Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com> Link: https://lore.kernel.org/r/5849ce60595aef1018bdde7dcfb54a7397597545.1606755367.git.Adam.Ward.opensource@diasemi.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-12-01regulator: da9121: Add device variant regmapsAdam Ward
Add ability to probe device and validate configuration, then apply a regmap configuration for a single or dual buck device accordingly. Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com> Link: https://lore.kernel.org/r/068c6b8d5e1b4e221e899e4c914c429429a2ec7d.1606755367.git.Adam.Ward.opensource@diasemi.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-12-01regulator: Update DA9121 dt-bindingsAdam Ward
Update bindings for the Dialog Semiconductor DA9121 voltage regulator to add device variants. Because several variants have multiple regulators, and to regard potential to add GPIO support in future, the 'regulators' sub-node is added, following the precedent set by other multi-regulator devices, including the DA9211 family. This breaks compatibility with the original submission by Vincent Whitchurch - but as this is still in for-next, the alignment could be made before upstreaming occurs. Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com> Link: https://lore.kernel.org/r/0606d3ded5fef4c38760246146f197db4ce3a374.1606755367.git.Adam.Ward.opensource@diasemi.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-12-01arm64: scs: use vmapped IRQ and SDEI shadow stacksSami Tolvanen
Use scs_alloc() to allocate also IRQ and SDEI shadow stacks instead of using statically allocated stacks. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20201130233442.2562064-3-samitolvanen@google.com [will: Move CONFIG_SHADOW_CALL_STACK check into init_irq_scs()] Signed-off-by: Will Deacon <will@kernel.org>
2020-12-01scs: switch to vmapped shadow stacksSami Tolvanen
The kernel currently uses kmem_cache to allocate shadow call stacks, which means an overflows may not be immediately detected and can potentially result in another task's shadow stack to be overwritten. This change switches SCS to use virtually mapped shadow stacks for tasks, which increases shadow stack size to a full page and provides more robust overflow detection, similarly to VMAP_STACK. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20201130233442.2562064-2-samitolvanen@google.com Signed-off-by: Will Deacon <will@kernel.org>
2020-12-01init: use type alignment for kernel parametersJohan Hovold
Specify type alignment for kernel parameters instead of sizeof(long). The alignment attribute is used to prevent gcc from increasing the alignment of objects with static extent as an optimisation, something which would mess up the __setup array stride. Using __alignof__(struct obs_kernel_param) rather than sizeof(long) is preferred since it better indicates why it is there and doesn't break should the type size or alignment change. Note that on m68k the alignment of struct obs_kernel_param is actually two and that adding a 1- or 2-byte field to the 12-byte struct would cause a breakage with the current 4-byte alignment. Link: https://lore.kernel.org/lkml/20201103175711.10731-1-johan@kernel.org Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Jessica Yu <jeyu@kernel.org>
2020-12-01netfilter: nfnl_acct: remove data from struct netWang Shanker
This patch removes nfnl_acct_list from struct net to reduce the default memory footprint for the netns structure. Signed-off-by: Miao Wang <shankerwangmiao@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-11-30mptcp: open code mptcp variant for lock_sockPaolo Abeni
This allows invoking an additional callback under the socket spin lock. Will be used by the next patches to avoid additional spin lock contention. Acked-by: Florian Westphal <fw@strlen.de> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-01xsk: Propagate napi_id to XDP socket Rx pathBjörn Töpel
Add napi_id to the xdp_rxq_info structure, and make sure the XDP socket pick up the napi_id in the Rx path. The napi_id is used to find the corresponding NAPI structure for socket busy polling. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Tariq Toukan <tariqt@nvidia.com> Link: https://lore.kernel.org/bpf/20201130185205.196029-7-bjorn.topel@gmail.com
2020-12-01net: Add SO_BUSY_POLL_BUDGET socket optionBjörn Töpel
This option lets a user set a per socket NAPI budget for busy-polling. If the options is not set, it will use the default of 8. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Link: https://lore.kernel.org/bpf/20201130185205.196029-3-bjorn.topel@gmail.com
2020-12-01net: Introduce preferred busy-pollingBjörn Töpel
The existing busy-polling mode, enabled by the SO_BUSY_POLL socket option or system-wide using the /proc/sys/net/core/busy_read knob, is an opportunistic. That means that if the NAPI context is not scheduled, it will poll it. If, after busy-polling, the budget is exceeded the busy-polling logic will schedule the NAPI onto the regular softirq handling. One implication of the behavior above is that a busy/heavy loaded NAPI context will never enter/allow for busy-polling. Some applications prefer that most NAPI processing would be done by busy-polling. This series adds a new socket option, SO_PREFER_BUSY_POLL, that works in concert with the napi_defer_hard_irqs and gro_flush_timeout knobs. The napi_defer_hard_irqs and gro_flush_timeout knobs were introduced in commit 6f8b12d661d0 ("net: napi: add hard irqs deferral feature"), and allows for a user to defer interrupts to be enabled and instead schedule the NAPI context from a watchdog timer. When a user enables the SO_PREFER_BUSY_POLL, again with the other knobs enabled, and the NAPI context is being processed by a softirq, the softirq NAPI processing will exit early to allow the busy-polling to be performed. If the application stops performing busy-polling via a system call, the watchdog timer defined by gro_flush_timeout will timeout, and regular softirq handling will resume. In summary; Heavy traffic applications that prefer busy-polling over softirq processing should use this option. Example usage: $ echo 2 | sudo tee /sys/class/net/ens785f1/napi_defer_hard_irqs $ echo 200000 | sudo tee /sys/class/net/ens785f1/gro_flush_timeout Note that the timeout should be larger than the userspace processing window, otherwise the watchdog will timeout and fall back to regular softirq processing. Enable the SO_BUSY_POLL/SO_PREFER_BUSY_POLL options on your socket. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Link: https://lore.kernel.org/bpf/20201130185205.196029-2-bjorn.topel@gmail.com
2020-11-30NFSD: Add helper for decoding locker4Chuck Lever
Refactor for clarity. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30NFSD: Replace READ* macros in nfsd4_decode_commit()Chuck Lever
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30NFSD: Replace the internals of the READ_BUF() macroChuck Lever
Convert the READ_BUF macro in nfs4xdr.c from open code to instead use the new xdr_stream-style decoders already in use by the encode side (and by the in-kernel NFS client implementation). Once this conversion is done, each individual NFSv4 argument decoder can be independently cleaned up to replace these macros with C code. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30SUNRPC: Prepare for xdr_stream-style decoding on the server-sideChuck Lever
A "permanent" struct xdr_stream is allocated in struct svc_rqst so that it is usable by all server-side decoders. A per-rqst scratch buffer is also allocated to handle decoding XDR data items that cross page boundaries. To demonstrate how it will be used, add the first call site for the new svcxdr_init_decode() API. As an additional part of the overall conversion, add symbolic constants for successful and failed XDR operations. Returning "0" is overloaded. Sometimes it means something failed, but sometimes it means success. To make it more clear when XDR decoding functions succeed or fail, introduce symbolic constants. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30SUNRPC: Add xdr_set_scratch_page() and xdr_reset_scratch_buffer()Chuck Lever
Clean up: De-duplicate some frequently-used code. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30SUNRPC: Move the svc_xdr_recvfrom() tracepointChuck Lever
Commit c509f15a5801 ("SUNRPC: Split the xdr_buf event class") added display of the rqst's XID to the svc_xdr_buf_class. However, when the recvfrom tracepoint fires, rq_xid has yet to be filled in with the current XID. So it ends up recording the previous XID that was handled by that svc_rqst. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Use the new parsed chunk list when pulling Read chunksChuck Lever
As a pre-requisite for handling multiple Read chunks in each Read list, convert svc_rdma_recv_read_chunk() to use the new parsed Read chunk list. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Clean up chunk tracepointsChuck Lever
We already have trace_svcrdma_decode_rseg(), which records each ingress Read segment. Instead of reporting those again when they are about to be posted as RDMA Reads, let's fire one tracepoint before posting each type of chunk. So we'll get: nfsd-1998 [002] 321.666615: svcrdma_decode_rseg: cq.id=4 cid=42 segno=0 position=0 192@0x013ca9ebfae14000:0xb0010b05 nfsd-1998 [002] 321.666615: svcrdma_decode_rseg: cq.id=4 cid=42 segno=1 position=0 7688@0x013ca9ebf914e000:0xb0010a05 nfsd-1998 [002] 321.666615: svcrdma_decode_rseg: cq.id=4 cid=42 segno=2 position=0 28@0x013ca9ebfae15000:0xb0010905 nfsd-1998 [002] 321.666622: svcrdma_decode_rqst: cq.id=4 cid=42 xid=0x013ca9eb vers=1 credits=128 proc=RDMA_NOMSG hdrlen=100 nfsd-1998 [002] 321.666642: svcrdma_post_read_chunk: cq.id=3 cid=112 sqecount=3 kworker/2:1H-221 [002] 321.673949: svcrdma_wc_read: cq.id=3 cid=112 status=SUCCESS (0/0x0) Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Remove chunk list pointersChuck Lever
Clean up: These pointers are no longer used. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Support multiple Write chunks in svc_rdma_send_reply_chunkChuck Lever
Refactor svc_rdma_send_reply_chunk() so that it Sends only the parts of rq_res that do not contain a result payload. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Support multiple Write chunks in svc_rdma_map_reply_msg()Chuck Lever
Refactor: svc_rdma_map_reply_msg() is restructured to DMA map only the parts of rq_res that do not contain a result payload. This change has been tested to confirm that it does not cause a regression in the no Write chunk and single Write chunk cases. Multiple Write chunks have not been tested. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Support multiple write chunks when pulling upChuck Lever
When counting the number of SGEs needed to construct a Send request, do not count result payloads. And, when copying the Reply message into the pull-up buffer, result payloads are not to be copied to the Send buffer. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Use parsed chunk lists to encode Reply transport headersChuck Lever
Refactor: Instead of re-parsing the ingress RPC Call transport header when constructing the egress RPC Reply transport header, use the new parsed Write list and Reply chunk, which are version- agnostic and already XDR decoded. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Use parsed chunk lists to construct RDMA WritesChuck Lever
Refactor: Instead of re-parsing the ingress RPC Call transport header when constructing RDMA Writes, use the new parsed chunk lists for the Write list and Reply chunk, which are version-agnostic and already XDR-decoded. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Use parsed chunk lists to detect reverse direction repliesChuck Lever
Refactor: Don't duplicate header decoding smarts here. Instead, use the new parsed chunk lists. Note that the XID sanity test is also removed. The XID is already looked up by the cb handler, and is rejected if it's not recognized. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
generated by cgit (git 2.34.1) at 2025-09-21 08:05:03 +0000