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2020-04-04Merge tag 's390-5.7-1' of ↵Linus Torvalds38-506/+218
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Update maintainers. Niklas Schnelle takes over zpci and Vineeth Vijayan common io code. - Extend cpuinfo to include topology information. - Add new extended counters for IBM z15 and sampling buffer allocation rework in perf code. - Add control over zeroing out memory during system restart. - CCA protected key block version 2 support and other fixes/improvements in crypto code. - Convert to new fallthrough; annotations. - Replace zero-length arrays with flexible-arrays. - QDIO debugfs and other small improvements. - Drop 2-level paging support optimization for compat tasks. Varios mm cleanups. - Remove broken and unused hibernate / power management support. - Remove fake numa support which does not bring any benefits. - Exclude offline CPUs from CPU topology masks to be more consistent with other architectures. - Prevent last branching instruction address leaking to userspace. - Other small various fixes and improvements all over the code. * tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (57 commits) s390/mm: cleanup init_new_context() callback s390/mm: cleanup virtual memory constants usage s390/mm: remove page table downgrade support s390/qdio: set qdio_irq->cdev at allocation time s390/qdio: remove unused function declarations s390/ccwgroup: remove pm support s390/ap: remove power management code from ap bus and drivers s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc s390/mm: cleanup arch_get_unmapped_area() and friends s390/ism: remove pm support s390/cio: use fallthrough; s390/vfio: use fallthrough; s390/zcrypt: use fallthrough; s390: use fallthrough; s390/cpum_sf: Fix wrong page count in error message s390/diag: fix display of diagnose call statistics s390/ap: Remove ap device suspend and resume callbacks s390/pci: Improve handling of unset UID s390/pci: Fix zpci_alloc_domain() over allocation s390/qdio: pass ISC as parameter to chsc_sadc() ...
2020-04-03Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds9-35/+449
Pull SCSI updates from James Bottomley: "This series has a huge amount of churn because it pulls in Mauro's doc update changing all our txt files to rst ones. Excluding that, we have the usual driver updates (qla2xxx, ufs, lpfc, zfcp, ibmvfc, pm80xx, aacraid), a treewide update for scnprintf and some other minor updates. The major core change is Hannes moving functions out of the aacraid driver and into the core" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (223 commits) scsi: aic7xxx: aic97xx: Remove FreeBSD-specific code scsi: ufs: Do not rely on prefetched data scsi: dc395x: remove dc395x_bios_param scsi: libiscsi: Fix error count for active session scsi: hpsa: correct race condition in offload enabled scsi: message: fusion: Replace zero-length array with flexible-array member scsi: qedi: Add PCI shutdown handler support scsi: qedi: Add MFW error recovery process scsi: ufs: Enable block layer runtime PM for well-known logical units scsi: ufs-qcom: Override devfreq parameters scsi: ufshcd: Let vendor override devfreq parameters scsi: ufshcd: Update the set frequency to devfreq scsi: ufs: Resume ufs host before accessing ufs device scsi: ufs-mediatek: customize the delay for enabling host scsi: ufs: make HCE polling more compact to improve initialization latency scsi: ufs: allow custom delay prior to host enabling scsi: ufs-mediatek: use common delay function scsi: ufs: introduce common and flexible delay function scsi: ufs: use an enum for host capabilities scsi: ufs: fix uninitialized tx_lanes in ufshcd_disable_tx_lcc() ...
2020-04-02Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "My attempt to revitalize trivial queue I've been neglecting for years (what a disaster that was for this world, right? :) ) with patches collected from backlog that were still relevant and not applied elsewhere in the meantime" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: err.h: remove deprecated PTR_RET for good blk-mq: Fix typo in comment x86/boot: Fix comment spelling sh: mach-highlander: Fix comment spelling s390/dasd: Fix comment spelling mfd: wm8994: Fix comment spelling docs: Add reference in binfmt-misc.rst genirq: fix kerneldoc comment for irq_desc drm/amdgpu: fix two documentation mismatch issues HID: fix Kconfig word ordering list/hashtable: minor documentation corrections.
2020-04-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextLinus Torvalds14-380/+572
Pull networking updates from David Miller: "Highlights: 1) Fix the iwlwifi regression, from Johannes Berg. 2) Support BSS coloring and 802.11 encapsulation offloading in hardware, from John Crispin. 3) Fix some potential Spectre issues in qtnfmac, from Sergey Matyukevich. 4) Add TTL decrement action to openvswitch, from Matteo Croce. 5) Allow paralleization through flow_action setup by not taking the RTNL mutex, from Vlad Buslov. 6) A lot of zero-length array to flexible-array conversions, from Gustavo A. R. Silva. 7) Align XDP statistics names across several drivers for consistency, from Lorenzo Bianconi. 8) Add various pieces of infrastructure for offloading conntrack, and make use of it in mlx5 driver, from Paul Blakey. 9) Allow using listening sockets in BPF sockmap, from Jakub Sitnicki. 10) Lots of parallelization improvements during configuration changes in mlxsw driver, from Ido Schimmel. 11) Add support to devlink for generic packet traps, which report packets dropped during ACL processing. And use them in mlxsw driver. From Jiri Pirko. 12) Support bcmgenet on ACPI, from Jeremy Linton. 13) Make BPF compatible with RT, from Thomas Gleixnet, Alexei Starovoitov, and your's truly. 14) Support XDP meta-data in virtio_net, from Yuya Kusakabe. 15) Fix sysfs permissions when network devices change namespaces, from Christian Brauner. 16) Add a flags element to ethtool_ops so that drivers can more simply indicate which coalescing parameters they actually support, and therefore the generic layer can validate the user's ethtool request. Use this in all drivers, from Jakub Kicinski. 17) Offload FIFO qdisc in mlxsw, from Petr Machata. 18) Support UDP sockets in sockmap, from Lorenz Bauer. 19) Fix stretch ACK bugs in several TCP congestion control modules, from Pengcheng Yang. 20) Support virtual functiosn in octeontx2 driver, from Tomasz Duszynski. 21) Add region operations for devlink and use it in ice driver to dump NVM contents, from Jacob Keller. 22) Add support for hw offload of MACSEC, from Antoine Tenart. 23) Add support for BPF programs that can be attached to LSM hooks, from KP Singh. 24) Support for multiple paths, path managers, and counters in MPTCP. From Peter Krystad, Paolo Abeni, Florian Westphal, Davide Caratti, and others. 25) More progress on adding the netlink interface to ethtool, from Michal Kubecek" * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2121 commits) net: ipv6: rpl_iptunnel: Fix potential memory leak in rpl_do_srh_inline cxgb4/chcr: nic-tls stats in ethtool net: dsa: fix oops while probing Marvell DSA switches net/bpfilter: remove superfluous testing message net: macb: Fix handling of fixed-link node net: dsa: ksz: Select KSZ protocol tag netdevsim: dev: Fix memory leak in nsim_dev_take_snapshot_write net: stmmac: add EHL 2.5Gbps PCI info and PCI ID net: stmmac: add EHL PSE0 & PSE1 1Gbps PCI info and PCI ID net: stmmac: create dwmac-intel.c to contain all Intel platform net: dsa: bcm_sf2: Support specifying VLAN tag egress rule net: dsa: bcm_sf2: Add support for matching VLAN TCI net: dsa: bcm_sf2: Move writing of CFP_DATA(5) into slicing functions net: dsa: bcm_sf2: Check earlier for FLOW_EXT and FLOW_MAC_EXT net: dsa: bcm_sf2: Disable learning for ASP port net: dsa: b53: Deny enslaving port 7 for 7278 into a bridge net: dsa: b53: Prevent tagged VLAN on port 7 for 7278 net: dsa: b53: Restore VLAN entries upon (re)configuration net: dsa: bcm_sf2: Fix overflow checks hv_netvsc: Remove unnecessary round_up for recv_completion_cnt ...
2020-03-30Merge tag 'for-5.7/block-2020-03-29' of git://git.kernel.dk/linux-blockLinus Torvalds2-4/+4
Pull block updates from Jens Axboe: - Online capacity resizing (Balbir) - Number of hardware queue change fixes (Bart) - null_blk fault injection addition (Bart) - Cleanup of queue allocation, unifying the node/no-node API (Christoph) - Cleanup of genhd, moving code to where it makes sense (Christoph) - Cleanup of the partition handling code (Christoph) - disk stat fixes/improvements (Konstantin) - BFQ improvements (Paolo) - Various fixes and improvements * tag 'for-5.7/block-2020-03-29' of git://git.kernel.dk/linux-block: (72 commits) block: return NULL in blk_alloc_queue() on error block: move bio_map_* to blk-map.c Revert "blkdev: check for valid request queue before issuing flush" block: simplify queue allocation bcache: pass the make_request methods to blk_queue_make_request null_blk: use blk_mq_init_queue_data block: add a blk_mq_init_queue_data helper block: move the ->devnode callback to struct block_device_operations block: move the part_stat* helpers from genhd.h to a new header block: move block layer internals out of include/linux/genhd.h block: move guard_bio_eod to bio.c block: unexport get_gendisk block: unexport disk_map_sector_rcu block: unexport disk_get_part block: mark part_in_flight and part_in_flight_rw static block: mark block_depr static block: factor out requeue handling from dispatch code block/diskstats: replace time_in_queue with sum of request times block/diskstats: accumulate all per-cpu counters in one pass block/diskstats: more accurate approximation of io_ticks for slow disks ...
2020-03-30s390/qeth: support net namespaces for L3 devicesJulian Wiedmann1-3/+0
Enable the L3 driver's IPv4 address notifier to watch for events on qeth devices that have been moved into a net namespace. We need to program those IPs into the HW just as usual, otherwise inbound traffic won't flow. Fixes: 6133fb1aa137 ("[NETNS]: Disable inetaddr notifiers in namespaces other than initial.") Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-28s390/qeth: phase out OSN supportJulian Wiedmann2-0/+4
OSN devices currently spend an awful long time in qeth_l2_set_online() until various unsupported HW cmds time out. This has been broken for over two years, ever since commit d22ffb5a712f ("s390/qeth: fix IPA command submission race") triggered a FW bug in cmd processing. Prior to commit 782e4a792147 ("s390/qeth: don't poll for cmd IO completion"), this wait for timeout would have even been spent busy-polling. The offending patch was picked up by stable and all relevant distros, and yet noone noticed. OSN setups only ever worked in combination with an out-of-tree blob, and the last machine that even offered HW with OSN support was released back in 2015. Rather than attempting to work-around this FW issue for no actual gain, add a deprecation warning so anyone who still wants to maintain this part of the code can speak up. Else rip it all out in 2021. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-28s390/qeth: make OSN / OSX support configurableJulian Wiedmann4-0/+33
The last machine generation that supports OSN is z13, and OSX is only supported up to z14. Allow users and distros to decide whether they still need support for these device types. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-28s390/qeth: remove fake_broadcast attributeJulian Wiedmann2-36/+0
Ever since commit 4a71df50047f ("qeth: new qeth device driver") introduced this attribute, it can be read & written but has no actual effect. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-27block: simplify queue allocationChristoph Hellwig2-4/+4
Current make_request based drivers use either blk_alloc_queue_node or blk_alloc_queue to allocate a queue, and then set up the make_request_fn function pointer and a few parameters using the blk_queue_make_request helper. Simplify this by passing the make_request pointer to blk_alloc_queue, and while at it merge the _node variant into the main helper by always passing a node_id, and remove the superfluous gfp_mask parameter. A lower-level __blk_alloc_queue is kept for the blk-mq case. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-03-27s390/qdio: set qdio_irq->cdev at allocation timeJulian Wiedmann5-17/+15
Set up qdio_irq->cdev right when the qdio_irq struct is allocated, so that all subsequent code can rely on this pointer. Then convert two helper functions to not pass a cdev parameter around. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-27s390/qdio: remove unused function declarationsJulian Wiedmann1-2/+0
commit 50f769df1c4b ("[S390] qdio: improve inbound buffer acknowledgement") introduced these declarations, but noone added the actual code for them. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-27s390/ccwgroup: remove pm supportJulian Wiedmann1-69/+0
As s390 no longer supports ARCH_HIBERNATION_POSSIBLE, drop the unused pm ops from the ccwgroup bus driver. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-27s390/ap: remove power management code from ap bus and driversHarald Freudenberger6-174/+5
The s390 power management support has been removed. So the api registration and the suspend and resume callbacks and all the code related to this for the ap bus and the ap drivers is removed with this patch. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-27s390/zcrypt: use kvmalloc instead of kmalloc for 256k allocHarald Freudenberger2-9/+9
Tests showed that it may happen that a 256k kmalloc may fail due to a temporary shortage on 256k slab entries. The find functions for cca and ep11 use a 256k array to fetch the states of all possible crypto cards and their domains in one piece. With the patch now kvmalloc is used to allocate this temporary memory as there is no need to have this memory area physical continuously. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-27s390/ism: remove pm supportUrsula Braun1-20/+0
As s390 no longer supports ARCH_HIBERNATION_POSSIBLE, drop the unused pm ops from the ism driver. Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller3-12/+193
Overlapping header include additions in macsec.c A bug fix in 'net' overlapping with the removal of 'version' string in ena_netdev.c Overlapping test additions in selftests Makefile Overlapping PCI ID table adjustments in iwlwifi driver. Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qeth: modernize two list helpersJulian Wiedmann1-5/+3
Replace list_for_each() with list_for_each_entry(), and list_entry(head.next) with list_first_entry(). Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qeth: keep track of fixed prio-queue configurationJulian Wiedmann3-4/+7
When a device is configured in prio-queue mode to pin all traffic onto a specific HW queue, treat this as a distinct variant of prio-queueing instead of QETH_NO_PRIO_QUEUEING. This corrects an error message from qeth_osa_set_output_queues() for devices configured in such a mode. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qeth: fine-tune MAC Address-related errnosJulian Wiedmann1-5/+5
Return the correct errnos when .ndo_set_mac_address fails to set a new MAC address. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qeth: add TX IRQ coalescing support for IQD devicesJulian Wiedmann3-8/+102
Since IQD devices complete (most of) their transmissions synchronously, they don't offer TX completion IRQs and have no HW coalescing controls. But we can fake the easy parts in SW, and give the user some control wrt to how often the TX NAPI code should be triggered to process the TX completions. Having per-queue controls can in particular help the dedicated mcast queue, as it likely benefits from different fine-tuning than what the ucast queues need. CC: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qeth: collect more TX statisticsJulian Wiedmann3-6/+17
Count the number of TX doorbells we issue to the qdio layer. Also count the number of actual frames in a TX buffer, and then use this data along with the byte count during TX completion. We'll make additional use of the frame count in a subsequent patch. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qeth: clean up the mac_bitsJulian Wiedmann2-8/+8
We're down to a single bit flag for MAC-address related status, reflect that in the info struct. Also set up the flag during initialization instead of clearing it during shutdown - one more little step towards unifying the shutdown code. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qeth: simplify L3 dev_id logicJulian Wiedmann2-22/+13
The logic that deals with errors from qeth_l3_get_unique_id() is quite complex: it sets card->unique_id to 0xfffe, additionally flags it as UNIQUE_ID_NOT_BY_CARD and later takes this flag as cue to not propagate card->unique_id to dev->dev_id. With dev->dev_id thus holding 0, addrconf_ifid_eui48() applies its default behaviour. Get rid of all the special bit masks, and just return the old uid in case of an error. For the vast majority of cases this will be 0 (and so we still get the desired default behaviour) - with the rare exception where qeth_l3_get_unique_id() might have been called earlier but the initialization then failed at a later point. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qdio: extend polling support to multiple queuesJulian Wiedmann6-104/+83
When the support for polling drivers was initially added, it only considered Input Queue 0. But as QDIO interrupts are actually for the full device and not a single queue, this doesn't really fit for configurations where multiple Input Queues are used. Rework the qdio code so that interrupts for a polling driver are not split up into actions for each queue. Instead deliver the interrupt as a single event, and let the driver decide which queue needs what action. When re-enabling the QDIO interrupt via qdio_start_irq(), this means that the qdio code needs to (1) put _all_ eligible queues back into a state where they raise IRQs, (2) and afterwards check _all_ eligible queues for new work to bridge the race window. On the qeth side of things (as the only qdio polling driver), we can now add CQ polling support to the main NAPI poll routine. It doesn't consume NAPI budget, and to avoid hogging the CPU we yield control after completing one full queue worth of buffers. The subsequent qdio_start_irq() will check for any additional work, and have us re-schedule the NAPI instance accordingly. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qeth: remove redundant if-clause in RX poll codeJulian Wiedmann1-30/+26
Whenever all completed RX buffers have been processed (ie. rx->b_count == 0), we call down to the HW layer to scan for additional buffers. If no further buffers are available, the code breaks out of the while-loop. So we never reach the 'process an RX buffer' step with rx->b_count == 0, eliminate that check and one level of indentation. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qeth: split out RX poll codeJulian Wiedmann1-21/+33
The main NAPI poll routine should eventually handle more types of work, beyond just the RX ring. Split off the RX poll logic into a separate function, and simplify the nested while-loop. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/qeth: simplify RX buffer trackingJulian Wiedmann2-19/+13
Since RX buffers may contain multiple packets, qeth's NAPI poll code can exhaust its budget in the middle of an RX buffer. Thus we keep track of our current position within the active RX buffer, so we can resume processing here in the next NAPI poll period. Clean up that code by tracking the index of the active buffer element, instead of a pointer to it. Also simplify the code that advances to the next RX buffer when the current buffer has been fully processed. v2: - remove QDIO_ELEMENT_NO() macro (davem) Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-25s390/cio: use fallthrough;Joe Perches1-2/+2
Convert the various uses of fallthrough comments to fallthrough; Done via script Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/ Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-25s390/vfio: use fallthrough;Joe Perches1-1/+1
Convert the various uses of fallthrough comments to fallthrough; Done via script Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/ Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-25s390/zcrypt: use fallthrough;Joe Perches3-9/+9
Convert the various uses of fallthrough comments to fallthrough; Done via script Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/ Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-25s390: use fallthrough;Joe Perches4-6/+6
Convert the various uses of fallthrough comments to fallthrough; Done via script Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/ Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-23s390/ap: Remove ap device suspend and resume callbacksHarald Freudenberger1-21/+0
With the removal of the s390 hibernate support the suspend and resume callbacks for the ap devices are not needed any more. This patch removes the callbacks and the ap bus' registration struct for the power management. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-23s390/qdio: pass ISC as parameter to chsc_sadc()Julian Wiedmann3-4/+6
When issuing a SADC for a QDIO device, don't hardcode the ISC but use whatever is specified in qdio's handler for Adapter Interrupts. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-23s390/zcrypt: replace snprintf/sprintf with scnprintfHarald Freudenberger6-75/+76
snprintf() may not always return the correct size of used bytes but instead the length the resulting string would be if it would fit into the buffer. So scnprintf() is the function to use when the real length of the resulting string is needed. Replace all occurrences of snprintf() with scnprintf() where the return code is further processed. Also find and fix some occurrences where sprintf() was used. Suggested-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-23s390/zcrypt: Use scnprintf() for avoiding potential buffer overflowTakashi Iwai1-19/+21
Since snprintf() returns the would-be-output size instead of the actual output size, the succeeding calls may go beyond the given buffer limit. Fix it by replacing with scnprintf(). Message-Id: <20200311090915.21059-1-tiwai@suse.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-19s390/qeth: use dev->reg_stateJulian Wiedmann3-29/+17
To check whether a netdevice has already been registered, look at NETREG_REGISTERED to replace some hacks I added a while ago. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19s390/qeth: remove gratuitous NULL checksJulian Wiedmann2-5/+0
qeth_do_ioctl() is only reached through our own net_device_ops, so we can trust that dev->ml_priv still contains what we put there earlier. qeth_bridgeport_an_set() is an internal function that doesn't require such sanity checks. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19s390/qeth: add phys_to_virt() translation for AOBJulian Wiedmann1-3/+4
Data addresses in the AOB are absolute, and need to be translated before being fed into kmem_cache_free(). Currently this phys_to_virt() is a no-op. Also see commit 2db01da8d25f ("s390/qdio: fill SBALEs with absolute addresses"). Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19s390/qeth: don't report hard-coded driver versionJulian Wiedmann1-1/+0
Versions are meaningless for an in-kernel driver. Instead use the UTS_RELEASE that is set by ethtool_get_drvinfo(). Cc: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19s390/qeth: add SW timestamping support for IQD devicesJulian Wiedmann2-1/+17
This adds support for SOF_TIMESTAMPING_TX_SOFTWARE. No support for non-IQD devices, since they orphan the skb in their xmit path. To play nice with TX bulking, set the timestamp when the buffer that contains the skb(s) is actually flushed out to HW. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19s390/qeth: balance the TX queue selection for IQD devicesJulian Wiedmann3-2/+46
For ucast traffic, qeth_iqd_select_queue() falls back to netdev_pick_tx(). This will potentially use skb_tx_hash() to distribute the flow over all active TX queues - so txq 0 is a valid selection, and qeth_iqd_select_queue() needs to check for this and put it on some other queue. As a result, the distribution for ucast flows is unbalanced and hits QETH_IQD_MIN_UCAST_TXQ heavier than the other queues. Open-coding a custom variant of skb_tx_hash() isn't an option, since netdev_pick_tx() also gives us eg. access to XPS. But we can pull a little trick: add a single TC class that excludes the mcast txq, and thus encourage skb_tx_hash() to not pick the mcast txq. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19s390/qeth: allow configuration of TX queues for IQD devicesJulian Wiedmann2-4/+21
Similar to the support for z/VM NICs, but we need to take extra care about the dedicated mcast queue: 1. netdev_pick_tx() is unaware of this limitation and might select the mcast txq. Catch this. 2. require at least _two_ TX queues - one for ucast, one for mcast. 3. when reducing the number of TX queues, there's a potential race where netdev_cap_txqueue() over-rules the selected txq index and falls back to index 0. This would place ucast traffic on the mcast queue, and result in TX errors. So for IQD, reject a reduction while the interface is running. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19s390/qeth: allow configuration of TX queues for z/VM NICsJulian Wiedmann1-0/+17
Add support for ETHTOOL_SCHANNELS to change the count of active TX queues. Since all TX queue structs are pre-allocated and -registered, we just need to trivially adjust dev->real_num_tx_queues. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19s390/qeth: remove prio-queueing support for z/VM NICsJulian Wiedmann5-25/+49
z/VM NICs don't offer HW QoS for TX rings. So just use netdev_pick_tx() to distribute the connections equally over all enabled TX queues. We start with just 1 enabled TX queue (this matches the typical configuration without prio-queueing). A follow-on patch will allow users to enable additional TX queues. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19s390/qeth: use memory reserves in TX slow pathJulian Wiedmann2-3/+6
When falling back to an allocation from the HW header cache, check if the skb is eligible for using memory reserves. This only makes a difference if the cache is empty and needs to be refilled. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-19s390/qeth: use memory reserves to back RX buffersJulian Wiedmann1-2/+2
Use dev_alloc_page() for backing the RX buffers with pages. This way we pick up __GFP_MEMALLOC. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-17s390/dasd: Fix comment spellingGeert Uytterhoeven1-1/+1
Fix misspelling of "configuration". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-03-17scsi: zfcp: log FC Endpoint Security errorsJens Remus2-0/+70
Log any FC Endpoint Security errors to the kernel ring buffer with rate- limiting. Link: https://lore.kernel.org/r/20200312174505.51294-11-maier@linux.ibm.com Reviewed-by: Steffen Maier <maier@linux.ibm.com> Signed-off-by: Jens Remus <jremus@linux.ibm.com> Signed-off-by: Steffen Maier <maier@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-17scsi: zfcp: enhance handling of FC Endpoint Security errorsJens Remus2-2/+12
Enable for explicit FCP channel FC Endpoint Security error reporting and handle any FSF security errors according to specification. Take the following recovery actions when a FSF_SECURITY_ERROR is reported for the specified FSF commands: - Open Port: Retry the command if possible - Send FCP : Physically close the remote port and reopen For Open Port the command status is set to error, which triggers a retry. For Send FCP the command status is set to error and recovery is triggered to physically reopen the remote port. Link: https://lore.kernel.org/r/20200312174505.51294-10-maier@linux.ibm.com Reviewed-by: Steffen Maier <maier@linux.ibm.com> Signed-off-by: Jens Remus <jremus@linux.ibm.com> Signed-off-by: Steffen Maier <maier@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-04 19:32:22 +0300