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2018-01-25sfc: simplify RX datapath timestampingLaurence Evans
Use timestamp conversion function with correction to avoid duplicate correction handling. Signed-off-by: Laurence Evans <levans@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: only advertise TX timestamping if we have the license for itMartin Habets
We check the license for TX hardware timestamping capability. The PTP probe will have enabled PTP sync events from the adapter. If later, at TX queue init, it turns out we do not have the license, we don't need the sync events either. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: on 8000 series use TX queues for TX timestampsEdward Cree
For this we create and use one or more new TX queues on the PTP channel, and enable sync events for it. Based on a patch by Martin Habets <mhabets@solarflare.com>. Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: MAC TX timestamp handling on the 8000 seriesMartin Habets
TX timestamps on 8000 series are supplied from the MAC. This timestamp is only 48 bits long. The high order bits from the last time sync event are used for the top 16 bits. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: only enable TX timestamping if the adapter is licensed for itMartin Habets
If we try to enable the feature and do not have the license for it, the MCPU will refuse and fail our TX queue init. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: use main datapath for HW timestamps if availableMartin Habets
We can now transmit SKBs in 2 ways: 1. Via the MC (for the 7XXX series and earlier), using efx_ptp_xmit_skb_mc(). 2. Via the TX queues on the dedicated PTP channel (8XXX series and later), using efx_ptp_xmit_skb_queue(). The PTP worker thread uses the method set up at probe time. It never checked the return code from the old efx_ptp_xmit_skb(), so it now returns void. We increment the TX dropped counter of the device if the transmit fails. As a result of the probe per channel the remove gets called multiple times. Clean up efx->ptp_data properly to avoid the 2nd call blowing up. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: add function to determine which TX timestamping method to useMartin Habets
Use MC capability MC_CMD_GET_CAPABILITIES_V2_OUT_TX_MAC_TIMESTAMPING to detect whether the NIC supports timestamping packets sent out the main datapath. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: handle TX timestamps in the normal data pathMartin Habets
Before this work, TX timestamping is done by sending each SKB to the MC. On the 8000 series (Medford1) we have high speed timestamping via the MAC, which means we can use normal TX queues for this without a significant drop in bandwidth. On the X2000 series (Medford2) support for transmitting via the MC is removed, so the new way must be used. This patch enables timestamping on a TX queue, if requested. It also enhances TX event handling to process the extra completion events, and puts the time in the SKB. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: remove tx and MCDI handling from NAPI budget considerationBert Kenward
The NAPI budget is only for RX processing work, not other work such as TX or MCDI completion handling. Signed-off-by: Bert Kenward <bkenward@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25f2fs: rebuild sit page from sit info in memYunlei He
This patch rebuild sit page from sit info in mem instead of issue a read io. I test this method and the result is as below: Pre: mmc_perf_test-12061 [001] ...1 976.819992: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [001] ...1 976.856446: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [003] ...1 998.976946: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [003] ...1 999.023269: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [003] ...1 1022.060772: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [003] ...1 1022.111034: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [002] ...1 1070.127643: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [003] ...1 1070.187352: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [003] ...1 1095.942124: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [003] ...1 1095.995975: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [003] ...1 1122.535091: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [003] ...1 1122.586521: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [001] ...1 1147.897487: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [001] ...1 1147.959438: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [003] ...1 1177.926951: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [002] ...1 1177.976823: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [002] ...1 1204.176087: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [002] ...1 1204.239046: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit Some sit flush consume more than 50ms. Now: mmc_perf_test-2187 [007] ...1 196.840684: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [007] ...1 196.841258: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [007] ...1 219.430582: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [007] ...1 219.431144: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [002] ...1 243.638678: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [000] ...1 243.638980: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [002] ...1 265.392180: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [002] ...1 265.392245: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [000] ...1 290.309051: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [000] ...1 290.309116: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [003] ...1 317.144209: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [003] ...1 317.145913: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [005] ...1 343.224954: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [005] ...1 343.225574: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [000] ...1 370.239846: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [000] ...1 370.241138: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [001] ...1 397.029043: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [001] ...1 397.030750: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [003] ...1 425.386377: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [003] ...1 425.387735: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit Most sit flush consume no more than 1ms. Signed-off-by: Yunlei He <heyunlei@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-25f2fs: stop issuing discard if fs is readonlyChao Yu
If filesystem is readonly, stop to issue discard in daemon. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-25f2fs: clean up duplicated assignment in init_discard_policyChao Yu
Remove duplicated codes of assignment for .max_requests and .io_aware_gran. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-25f2fs: use GFP_F2FS_ZERO for cleanupChao Yu
Clean up codes with GFP_F2FS_ZERO, no logic changes. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-25nvme-rdma: remove redundant boolean for inline_dataMax Gurtovoy
Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-01-25nvme: don't free uuid pointer before printing itJohannes Thumshirn
Commit df351ef73789 ("nvme-fabrics: fix memory leak when parsing host ID option") fixed the leak of 'p' but in case uuid_parse() fails the memory is freed before the error print that is using it. Free it after printing eventual errors. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Fixes: df351ef73789 ("nvme-fabrics: fix memory leak when parsing host ID option") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-01-25Merge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.gitKalle Valo
ath.git patches for 4.16. Major changes: wil6210 * add PCI device id for Talyn * support flashless device ath9k * improve RSSI/signal accuracy on AR9003 series
2018-01-25rtlwifi: btcoex: Fix some static warnings from SparsePing-Ke Shih
Add 'static' or declaration to resolve the warnings, and remove two unused functions halbtc_set_macreg() and halbtc_get_macreg() exposed when they were made static. Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Acked-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-25Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Radim Krčmář: "Fix races and a potential use after free in the s390 cmma migration code" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: s390: add proper locking for CMMA migration bitmap
2018-01-25GFS2: Fix minor comment typoBob Peterson
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
2018-01-25Merge tag 'for-4.15-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fix from David Sterba: "It's been reported recently that readdir can list stale entries under some conditions. Fix it." * tag 'for-4.15-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: Btrfs: fix stale entries in readdir
2018-01-25net: Move net:netns_ids destruction out of rtnl_lock() and document locking ↵Kirill Tkhai
scheme Currently, we unhash a dying net from netns_ids lists under rtnl_lock(). It's a leftover from the time when net::netns_ids was introduced. There was no net::nsid_lock, and rtnl_lock() was mostly need to order modification of alive nets nsid idr, i.e. for: for_each_net(tmp) { ... id = __peernet2id(tmp, net); idr_remove(&tmp->netns_ids, id); ... } Since we have net::nsid_lock, the modifications are protected by this local lock, and now we may introduce better scheme of netns_ids destruction. Let's look at the functions peernet2id_alloc() and get_net_ns_by_id(). Previous commits taught these functions to work well with dying net acquired from rtnl unlocked lists. And they are the only functions which can hash a net to netns_ids or obtain from there. And as easy to check, other netns_ids operating functions works with id, not with net pointers. So, we do not need rtnl_lock to synchronize cleanup_net() with all them. The another property, which is used in the patch, is that net is unhashed from net_namespace_list in the only place and by the only process. So, we avoid excess rcu_read_lock() or rtnl_lock(), when we'are iterating over the list in unhash_nsid(). All the above makes possible to keep rtnl_lock() locked only for net->list deletion, and completely avoid it for netns_ids unhashing and destruction. As these two doings may take long time (e.g., memory allocation to send skb), the patch should positively act on the scalability and signify decrease the time, which rtnl_lock() is held in cleanup_net(). Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25RDMA/qedr: lower print level of flushed CQEsKalderon, Michal
There are races where can still get flush on CQEs before the QP enters error state. This is not an error and should be treated as debug information. Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com> Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-25RDMA/uverbs: Use an unambiguous errno for method not supportedJason Gunthorpe
Returning EOPNOTSUPP is problematic because it can also be returned by the method function, and we use it in quite a few places in drivers these days. Instead, dedicate EPROTONOSUPPORT to indicate that the ioctl framework is enabled but the requested object and method are not supported by the kernel. No other case will return this code, and it lets userspace know to fall back to write(). grep says we do not use it today in drivers/infiniband subsystem. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Reviewed-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-25net: tcp: close sock if net namespace is exitingDan Streetman
When a tcp socket is closed, if it detects that its net namespace is exiting, close immediately and do not wait for FIN sequence. For normal sockets, a reference is taken to their net namespace, so it will never exit while the socket is open. However, kernel sockets do not take a reference to their net namespace, so it may begin exiting while the kernel socket is still open. In this case if the kernel socket is a tcp socket, it will stay open trying to complete its close sequence. The sock's dst(s) hold a reference to their interface, which are all transferred to the namespace's loopback interface when the real interfaces are taken down. When the namespace tries to take down its loopback interface, it hangs waiting for all references to the loopback interface to release, which results in messages like: unregister_netdevice: waiting for lo to become free. Usage count = 1 These messages continue until the socket finally times out and closes. Since the net namespace cleanup holds the net_mutex while calling its registered pernet callbacks, any new net namespace initialization is blocked until the current net namespace finishes exiting. After this change, the tcp socket notices the exiting net namespace, and closes immediately, releasing its dst(s) and their reference to the loopback interface, which lets the net namespace continue exiting. Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1711407 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=97811 Signed-off-by: Dan Streetman <ddstreet@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25MAINTAINERS: Fix the location of the rdma git repoDoug Ledford
When Jason Gunthorpe and I became co-maintainers of the rdma tree, we moved the official git repo location to a name neutral location. However, that update did not make it here as well. Fix that mistake. Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-25ata: pata_pdc2027x: Replace mdelay with msleepJia-Ju Bai
After checking all possible call chains to pdc_adjust_pll and pdc_detect_pll_input_clock, my tool finds that these functions are never called in atomic context, namely never in an interrupt handler or holding a spinlock. And their caller functions pdc2027x_init_one and pdc2027x_reinit_one calls pci_enable_device which can sleep, and no spinlock is held when calling pdc_adjust_pll and pdc_detect_pll_input_clock, so it proves that pdc_adjust_pll and pdc_detect_pll_input_clock can call functions which can sleep. Thus mdelay can be replaced with msleep to avoid busy wait. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2018-01-25ata: pata_it821x: Replace mdelay with usleep_range in it821x_firmware_commandJia-Ju Bai
After checking all possible call chains to it821x_firmware_command here, my tool finds that it821x_firmware_command is never called in atomic context, namely never in an interrupt handler or holding a spinlock. And it821x_firmware_command calls kmalloc(GFP_KERNEL), so it proves again that it821x_firmware_command can call functions which can sleep. Thus mdelay can be replaced with usleep_range to avoid busy wait. This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2018-01-25ata: sata_mv: Replace mdelay with usleep_range in mv_reset_channelJia-Ju Bai
After checking all possible call chains to mv_reset_channel here, my tool finds that mv_reset_channel is never called in atomic context, namely never in an interrupt handler or holding a spinlock. Thus mdelay can be replaced with usleep_range to avoid busy wait. This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2018-01-25nvme-pci: Suspend queues after deleting themKeith Busch
The driver had been abusing the cq_vector state to know if new submissions were safe, but that was before we could quiesce blk-mq. If the controller happens to get an interrupt through while we're suspending those queues, 'no irq handler' warnings may occur. This patch will disable the interrupts only after the queues are deleted. Reported-by: Jianchao Wang <jianchao.w.wang@oracle.com> Tested-by: Jianchao Wang <jianchao.w.wang@oracle.com> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-01-25MAINTAINERS: Remove Ram Amrani from Q-Logic RDMA driverAmrani, Ram
Remove myself from maintaining the qedr module as my period of working with Cavium/Q-Logic has come to an end. I've had a pleasure working with the community, cheers! Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-25RDMA/srpt: Fix RCU debug build errorLeon Romanovsky
Combination of CONFIG_DEBUG_OBJECTS_RCU_HEAD=y and CONFIG_INFINIBAND_SRPT=m produces the following build error. ERROR: "init_rcu_head" [drivers/infiniband/ulp/srpt/ib_srpt.ko] undefined! make[1]: *** [scripts/Makefile.modpost:92: __modpost] Error 1 make: *** [Makefile:1216: modules] Error 2 The reason to it that init_rcu_head() is not exported and not supposed to be used in modules. It is needed for dynamic initialization of statically allocated rcu_head structures. Fixes: 795bc112cd5a ("IB/srpt: Make it safe to use RCU for srpt_device.rch_list") Fixes: a11253142e6d ("IB/srpt: Rework multi-channel support") Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-25MAINTAINERS: add the iommu list for swiotlb and xen-swiotlbChristoph Hellwig
All other discussions related to the dma mapping interfaces are on the iommu list, so let's make it the official list for swiotlb and the second list for xen-swiotlb. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2018-01-26crypto: picoxcell - Fix error handling in spacc_probe()Alexey Khoroshilov
If clk_get() fails, device_remove_file() looks inappropriate. The error path, where all crypto_register fail, misses resource deallocations. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: arm64/sha512 - fix/improve new v8.2 Crypto Extensions codeArd Biesheuvel
Add a missing symbol export that prevents this code to be built as a module. Also, move the round constant table to the .rodata section, and use a more optimized version of the core transform. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: arm64/sm3 - new v8.2 Crypto Extensions implementationArd Biesheuvel
Implement the Chinese SM3 secure hash algorithm using the new special instructions that have been introduced as an optional extension in ARMv8.2. Tested-by: Steve Capper <steve.capper@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: arm64/sha3 - new v8.2 Crypto Extensions implementationArd Biesheuvel
Implement the various flavours of SHA3 using the new optional EOR3/RAX1/XAR/BCAX instructions introduced by ARMv8.2. Tested-by: Steve Capper <steve.capper@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: testmgr - add new testcases for sha3Ard Biesheuvel
All current SHA3 test cases are smaller than the SHA3 block size, which means not all code paths are being exercised. So add a new test case to each variant, and make one of the existing test cases chunked. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: sha3-generic - export init/update/final routinesArd Biesheuvel
To allow accelerated implementations to fall back to the generic routines, e.g., in contexts where a SIMD based implementation is not allowed to run, expose the generic SHA3 init/update/final routines to other modules. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: sha3-generic - simplify codeArd Biesheuvel
In preparation of exposing the generic SHA3 implementation to other versions as a fallback, simplify the code, and remove an inconsistency in the output handling (endian swabbing rsizw words of state before writing the output does not make sense) Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: sha3-generic - rewrite KECCAK transform to help the compiler optimizeArd Biesheuvel
The way the KECCAK transform is currently coded involves many references into the state array using indexes that are calculated at runtime using simple but non-trivial arithmetic. This forces the compiler to treat the state matrix as an array in memory rather than keep it in registers, which results in poor performance. So instead, let's rephrase the algorithm using fixed array indexes only. This helps the compiler keep the state matrix in registers, resulting in the following speedup (SHA3-256 performance in cycles per byte): before after speedup Intel Core i7 @ 2.0 GHz (2.9 turbo) 100.6 35.7 2.8x Cortex-A57 @ 2.0 GHz (64-bit mode) 101.6 12.7 8.0x Cortex-A53 @ 1.0 GHz 224.4 15.8 14.2x Cortex-A57 @ 2.0 GHz (32-bit mode) 201.8 63.0 3.2x Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: sha3-generic - fixes for alignment and big endian operationArd Biesheuvel
Ensure that the input is byte swabbed before injecting it into the SHA3 transform. Use the get_unaligned() accessor for this so that we don't perform unaligned access inadvertently on architectures that do not support that. Cc: <stable@vger.kernel.org> Fixes: 53964b9ee63b7075 ("crypto: sha3 - Add SHA-3 hash algorithm") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: aesni - handle zero length dst bufferStephan Mueller
GCM can be invoked with a zero destination buffer. This is possible if the AAD and the ciphertext have zero lengths and only the tag exists in the source buffer (i.e. a source buffer cannot be zero). In this case, the GCM cipher only performs the authentication and no decryption operation. When the destination buffer has zero length, it is possible that no page is mapped to the SG pointing to the destination. In this case, sg_page(req->dst) is an invalid access. Therefore, page accesses should only be allowed if the req->dst->length is non-zero which is the indicator that a page must exist. This fixes a crash that can be triggered by user space via AF_ALG. CC: <stable@vger.kernel.org> Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: artpec6 - remove select on non-existing CRYPTO_SHA384Corentin LABBE
Since CRYPTO_SHA384 does not exists, Kconfig should not select it. Anyway, all SHA384 stuff is in CRYPTO_SHA512 which is already selected. Fixes: a21eb94fc4d3i ("crypto: axis - add ARTPEC-6/7 crypto accelerator driver") Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26hwrng: bcm2835 - Remove redundant dev_err call in bcm2835_rng_probe()weiyongjun \(A\)
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Eric Anholt <eric@anholt.net> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: stm32 - remove redundant dev_err call in stm32_cryp_probe()weiyongjun \(A\)
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: axis - remove unnecessary platform_get_resource() error checkweiyongjun \(A\)
devm_ioremap_resource() already checks if the resource is NULL, so remove the unnecessary platform_get_resource() error check. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: testmgr - test misuse of result in ahashKamil Konieczny
Async hash operations can use result pointer in final/finup/digest, but not in init/update/export/import, so test it for misuse. Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: inside-secure - make function safexcel_try_push_requests staticColin Ian King
The function safexcel_try_push_requests is local to the source and does not need to be in global scope, so make it static. Cleans up sparse warning: symbol 'safexcel_try_push_requests' was not declared. Should it be static? Signed-off-by: Colin Ian King <colin.king@canonical.com> [Antoine: fixed alignment] Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-25perf/x86: Fix perf,x86,cpuhp deadlockPeter Zijlstra
More lockdep gifts, a 5-way lockup race: perf_event_create_kernel_counter() perf_event_alloc() perf_try_init_event() x86_pmu_event_init() __x86_pmu_event_init() x86_reserve_hardware() #0 mutex_lock(&pmc_reserve_mutex); reserve_ds_buffer() #1 get_online_cpus() perf_event_release_kernel() _free_event() hw_perf_event_destroy() x86_release_hardware() #0 mutex_lock(&pmc_reserve_mutex) release_ds_buffer() #1 get_online_cpus() #1 do_cpu_up() perf_event_init_cpu() #2 mutex_lock(&pmus_lock) #3 mutex_lock(&ctx->mutex) sys_perf_event_open() mutex_lock_double() #3 mutex_lock(ctx->mutex) #4 mutex_lock_nested(ctx->mutex, 1); perf_try_init_event() #4 mutex_lock_nested(ctx->mutex, 1) x86_pmu_event_init() intel_pmu_hw_config() x86_add_exclusive() #0 mutex_lock(&pmc_reserve_mutex) Fix it by using ordering constructs instead of locking. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-01-25perf/core: Fix ctx::mutex deadlockPeter Zijlstra
Lockdep noticed the following 3-way lockup scenario: sys_perf_event_open() perf_event_alloc() perf_try_init_event() #0 ctx = perf_event_ctx_lock_nested(1) perf_swevent_init() swevent_hlist_get() #1 mutex_lock(&pmus_lock) perf_event_init_cpu() #1 mutex_lock(&pmus_lock) #2 mutex_lock(&ctx->mutex) sys_perf_event_open() mutex_lock_double() #2 mutex_lock() #0 mutex_lock_nested() And while we need that perf_event_ctx_lock_nested() for HW PMUs such that they can iterate the sibling list, trying to match it to the available counters, the software PMUs need do no such thing. Exclude them. In particular the swevent triggers the above invertion, while the tpevent PMU triggers a more elaborate one through their event_mutex. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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