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2018-08-23Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds1-3/+21
Pull more rdma updates from Jason Gunthorpe: "This is the SMC cleanup promised, a randconfig regression fix, and kernel oops fix. Summary: - Switch SMC over to rdma_get_gid_attr and remove the compat - Fix a crash in HFI1 with some BIOS's - Fix a randconfig failure" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: IB/ucm: fix UCM link error IB/hfi1: Invalid NUMA node information can cause a divide by zero RDMA/smc: Replace ib_query_gid with rdma_get_gid_attr
2018-08-22mm, oom: distinguish blockable mode for mmu notifiersMichal Hocko2-5/+8
There are several blockable mmu notifiers which might sleep in mmu_notifier_invalidate_range_start and that is a problem for the oom_reaper because it needs to guarantee a forward progress so it cannot depend on any sleepable locks. Currently we simply back off and mark an oom victim with blockable mmu notifiers as done after a short sleep. That can result in selecting a new oom victim prematurely because the previous one still hasn't torn its memory down yet. We can do much better though. Even if mmu notifiers use sleepable locks there is no reason to automatically assume those locks are held. Moreover majority of notifiers only care about a portion of the address space and there is absolutely zero reason to fail when we are unmapping an unrelated range. Many notifiers do really block and wait for HW which is harder to handle and we have to bail out though. This patch handles the low hanging fruit. __mmu_notifier_invalidate_range_start gets a blockable flag and callbacks are not allowed to sleep if the flag is set to false. This is achieved by using trylock instead of the sleepable lock for most callbacks and continue as long as we do not block down the call chain. I think we can improve that even further because there is a common pattern to do a range lookup first and then do something about that. The first part can be done without a sleeping lock in most cases AFAICS. The oom_reaper end then simply retries if there is at least one notifier which couldn't make any progress in !blockable mode. A retry loop is already implemented to wait for the mmap_sem and this is basically the same thing. The simplest way for driver developers to test this code path is to wrap userspace code which uses these notifiers into a memcg and set the hard limit to hit the oom. This can be done e.g. after the test faults in all the mmu notifier managed memory and set the hard limit to something really small. Then we are looking for a proper process tear down. [[email protected]: coding style fixes] [[email protected]: minor code simplification] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Michal Hocko <[email protected]> Acked-by: Christian König <[email protected]> # AMD notifiers Acked-by: Leon Romanovsky <[email protected]> # mlx and umem_odp Reported-by: David Rientjes <[email protected]> Cc: "David (ChunMing) Zhou" <[email protected]> Cc: Paolo Bonzini <[email protected]> Cc: Alex Deucher <[email protected]> Cc: David Airlie <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Joonas Lahtinen <[email protected]> Cc: Rodrigo Vivi <[email protected]> Cc: Doug Ledford <[email protected]> Cc: Jason Gunthorpe <[email protected]> Cc: Mike Marciniszyn <[email protected]> Cc: Dennis Dalessandro <[email protected]> Cc: Sudeep Dutt <[email protected]> Cc: Ashutosh Dixit <[email protected]> Cc: Dimitri Sivanich <[email protected]> Cc: Boris Ostrovsky <[email protected]> Cc: Juergen Gross <[email protected]> Cc: "Jérôme Glisse" <[email protected]> Cc: Andrea Arcangeli <[email protected]> Cc: Felix Kuehling <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2018-08-20IB/hfi1: Invalid NUMA node information can cause a divide by zeroMichael J. Ruhl1-3/+21
If the system BIOS does not supply NUMA node information to the PCI devices, the NUMA node is selected by choosing the current node. This can lead to the following crash: divide error: 0000 SMP CPU: 0 PID: 4 Comm: kworker/0:0 Tainted: G IOE ------------ 3.10.0-693.21.1.el7.x86_64 #1 Hardware name: Intel Corporation S2600KP/S2600KP, BIOS SE5C610.86B.01.01.0005.101720141054 10/17/2014 Workqueue: events work_for_cpu_fn task: ffff880174480fd0 ti: ffff880174488000 task.ti: ffff880174488000 RIP: 0010: [<ffffffffc020ac69>] hfi1_dev_affinity_init+0x129/0x6a0 [hfi1] RSP: 0018:ffff88017448bbf8 EFLAGS: 00010246 RAX: 0000000000000011 RBX: ffff88107ffba6c0 RCX: ffff88085c22e130 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880824ad0000 RBP: ffff88017448bc48 R08: 0000000000000011 R09: 0000000000000002 R10: ffff8808582b6ca0 R11: 0000000000003151 R12: ffff8808582b6ca0 R13: ffff8808582b6518 R14: ffff8808582b6010 R15: 0000000000000012 FS: 0000000000000000(0000) GS:ffff88085ec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efc707404f0 CR3: 0000000001a02000 CR4: 00000000001607f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: hfi1_init_dd+0x14b3/0x27a0 [hfi1] ? pcie_capability_write_word+0x46/0x70 ? hfi1_pcie_init+0xc0/0x200 [hfi1] do_init_one+0x153/0x4c0 [hfi1] ? sched_clock_cpu+0x85/0xc0 init_one+0x1b5/0x260 [hfi1] local_pci_probe+0x4a/0xb0 work_for_cpu_fn+0x1a/0x30 process_one_work+0x17f/0x440 worker_thread+0x278/0x3c0 ? manage_workers.isra.24+0x2a0/0x2a0 kthread+0xd1/0xe0 ? insert_kthread_work+0x40/0x40 ret_from_fork+0x77/0xb0 ? insert_kthread_work+0x40/0x40 If the BIOS is not supplying NUMA information: - set the default table count to 1 for all possible nodes - select node 0 (instead of current NUMA) node to get consistent performance - generate an error indicating that the BIOS should be upgraded Reviewed-by: Gary Leshner <[email protected]> Reviewed-by: Mike Marciniszyn <[email protected]> Signed-off-by: Michael J. Ruhl <[email protected]> Signed-off-by: Dennis Dalessandro <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-16Merge branch 'linus/master' into rdma.git for-nextJason Gunthorpe3-10/+6
rdma.git merge resolution for the 4.19 merge window Conflicts: drivers/infiniband/core/rdma_core.c - Use the rdma code and revise with the new spelling for atomic_fetch_add_unless drivers/nvme/host/rdma.c - Replace max_sge with max_send_sge in new blk code drivers/nvme/target/rdma.c - Use the blk code and revise to use NULL for ib_post_recv when appropriate - Replace max_sge with max_recv_sge in new blk code net/rds/ib_send.c - Use the net code and revise to use NULL for ib_post_recv when appropriate Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-16Merge tag 'v4.18' into rdma.git for-nextJason Gunthorpe10-34/+52
Resolve merge conflicts from the -rc cycle against the rdma.git tree: Conflicts: drivers/infiniband/core/uverbs_cmd.c - New ifs added to ib_uverbs_ex_create_flow in -rc and for-next - Merge removal of file->ucontext in for-next with new code in -rc drivers/infiniband/core/uverbs_main.c - for-next removed code from ib_uverbs_write() that was modified in for-rc Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-16Merge tag 'pci-v4.19-changes' of ↵Linus Torvalds1-3/+1
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull pci updates from Bjorn Helgaas: - Decode AER errors with names similar to "lspci" (Tyler Baicar) - Expose AER statistics in sysfs (Rajat Jain) - Clear AER status bits selectively based on the type of recovery (Oza Pawandeep) - Honor "pcie_ports=native" even if HEST sets FIRMWARE_FIRST (Alexandru Gagniuc) - Don't clear AER status bits if we're using the "Firmware-First" strategy where firmware owns the registers (Alexandru Gagniuc) - Use sysfs_match_string() to simplify ASPM sysfs parsing (Andy Shevchenko) - Remove unnecessary includes of <linux/pci-aspm.h> (Bjorn Helgaas) - Defer DPC event handling to work queue (Keith Busch) - Use threaded IRQ for DPC bottom half (Keith Busch) - Print AER status while handling DPC events (Keith Busch) - Work around IDT switch ACS Source Validation erratum (James Puthukattukaran) - Emit diagnostics for all cases of PCIe Link downtraining (Links operating slower than they're capable of) (Alexandru Gagniuc) - Skip VFs when configuring Max Payload Size (Myron Stowe) - Reduce Root Port Max Payload Size if necessary when hot-adding a device below it (Myron Stowe) - Simplify SHPC existence/permission checks (Bjorn Helgaas) - Remove hotplug sample skeleton driver (Lukas Wunner) - Convert pciehp to threaded IRQ handling (Lukas Wunner) - Improve pciehp tolerance of missed events and initially unstable links (Lukas Wunner) - Clear spurious pciehp events on resume (Lukas Wunner) - Add pciehp runtime PM support, including for Thunderbolt controllers (Lukas Wunner) - Support interrupts from pciehp bridges in D3hot (Lukas Wunner) - Mark fall-through switch cases before enabling -Wimplicit-fallthrough (Gustavo A. R. Silva) - Move DMA-debug PCI init from arch code to PCI core (Christoph Hellwig) - Fix pci_request_irq() usage of IRQF_ONESHOT when no handler is supplied (Heiner Kallweit) - Unify PCI and DMA direction #defines (Shunyong Yang) - Add PCI_DEVICE_DATA() macro (Andy Shevchenko) - Check for VPD completion before checking for timeout (Bert Kenward) - Limit Netronome NFP5000 config space size to work around erratum (Jakub Kicinski) - Set IRQCHIP_ONESHOT_SAFE for PCI MSI irqchips (Heiner Kallweit) - Document ACPI description of PCI host bridges (Bjorn Helgaas) - Add "pci=disable_acs_redir=" parameter to disable ACS redirection for peer-to-peer DMA support (we don't have the peer-to-peer support yet; this is just one piece) (Logan Gunthorpe) - Clean up devm_of_pci_get_host_bridge_resources() resource allocation (Jan Kiszka) - Fixup resizable BARs after suspend/resume (Christian König) - Make "pci=earlydump" generic (Sinan Kaya) - Fix ROM BAR access routines to stay in bounds and check for signature correctly (Rex Zhu) - Add DMA alias quirk for Microsemi Switchtec NTB (Doug Meyer) - Expand documentation for pci_add_dma_alias() (Logan Gunthorpe) - To avoid bus errors, enable PASID only if entire path supports End-End TLP prefixes (Sinan Kaya) - Unify slot and bus reset functions and remove hotplug knowledge from callers (Sinan Kaya) - Add Function-Level Reset quirks for Intel and Samsung NVMe devices to fix guest reboot issues (Alex Williamson) - Add function 1 DMA alias quirk for Marvell 88SS9183 PCIe SSD Controller (Bjorn Helgaas) - Remove Xilinx AXI-PCIe host bridge arch dependency (Palmer Dabbelt) - Remove Aardvark outbound window configuration (Evan Wang) - Fix Aardvark bridge window sizing issue (Zachary Zhang) - Convert Aardvark to use pci_host_probe() to reduce code duplication (Thomas Petazzoni) - Correct the Cadence cdns_pcie_writel() signature (Alan Douglas) - Add Cadence support for optional generic PHYs (Alan Douglas) - Add Cadence power management ops (Alan Douglas) - Remove redundant variable from Cadence driver (Colin Ian King) - Add Kirin MSI support (Xiaowei Song) - Drop unnecessary root_bus_nr setting from exynos, imx6, keystone, armada8k, artpec6, designware-plat, histb, qcom, spear13xx (Shawn Guo) - Move link notification settings from DesignWare core to individual drivers (Gustavo Pimentel) - Add endpoint library MSI-X interfaces (Gustavo Pimentel) - Correct signature of endpoint library IRQ interfaces (Gustavo Pimentel) - Add DesignWare endpoint library MSI-X callbacks (Gustavo Pimentel) - Add endpoint library MSI-X test support (Gustavo Pimentel) - Remove unnecessary GFP_ATOMIC from Hyper-V "new child" allocation (Jia-Ju Bai) - Add more devices to Broadcom PAXC quirk (Ray Jui) - Work around corrupted Broadcom PAXC config space to enable SMMU and GICv3 ITS (Ray Jui) - Disable MSI parsing to work around broken Broadcom PAXC logic in some devices (Ray Jui) - Hide unconfigured functions to work around a Broadcom PAXC defect (Ray Jui) - Lower iproc log level to reduce console output during boot (Ray Jui) - Fix mobiveil iomem/phys_addr_t type usage (Lorenzo Pieralisi) - Fix mobiveil missing include file (Lorenzo Pieralisi) - Add mobiveil Kconfig/Makefile support (Lorenzo Pieralisi) - Fix mvebu I/O space remapping issues (Thomas Petazzoni) - Use generic pci_host_bridge in mvebu instead of ARM-specific API (Thomas Petazzoni) - Whitelist VMD devices with fast interrupt handlers to avoid sharing vectors with slow handlers (Keith Busch) * tag 'pci-v4.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (153 commits) PCI/AER: Don't clear AER bits if error handling is Firmware-First PCI: Limit config space size for Netronome NFP5000 PCI/MSI: Set IRQCHIP_ONESHOT_SAFE for PCI-MSI irqchips PCI/VPD: Check for VPD access completion before checking for timeout PCI: Add PCI_DEVICE_DATA() macro to fully describe device ID entry PCI: Match Root Port's MPS to endpoint's MPSS as necessary PCI: Skip MPS logic for Virtual Functions (VFs) PCI: Add function 1 DMA alias quirk for Marvell 88SS9183 PCI: Check for PCIe Link downtraining PCI: Add ACS Redirect disable quirk for Intel Sunrise Point PCI: Add device-specific ACS Redirect disable infrastructure PCI: Convert device-specific ACS quirks from NULL termination to ARRAY_SIZE PCI: Add "pci=disable_acs_redir=" parameter for peer-to-peer support PCI: Allow specifying devices using a base bus and path of devfns PCI: Make specifying PCI devices in kernel parameters reusable PCI: Hide ACS quirk declarations inside PCI core PCI: Delay after FLR of Intel DC P3700 NVMe PCI: Disable Samsung SM961/PM961 NVMe before FLR PCI: Export pcie_has_flr() PCI: mvebu: Drop bogus comment above mvebu_pcie_map_registers() ...
2018-08-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds4-2/+18
Pull networking updates from David Miller: "Highlights: - Gustavo A. R. Silva keeps working on the implicit switch fallthru changes. - Support 802.11ax High-Efficiency wireless in cfg80211 et al, From Luca Coelho. - Re-enable ASPM in r8169, from Kai-Heng Feng. - Add virtual XFRM interfaces, which avoids all of the limitations of existing IPSEC tunnels. From Steffen Klassert. - Convert GRO over to use a hash table, so that when we have many flows active we don't traverse a long list during accumluation. - Many new self tests for routing, TC, tunnels, etc. Too many contributors to mention them all, but I'm really happy to keep seeing this stuff. - Hardware timestamping support for dpaa_eth/fsl-fman from Yangbo Lu. - Lots of cleanups and fixes in L2TP code from Guillaume Nault. - Add IPSEC offload support to netdevsim, from Shannon Nelson. - Add support for slotting with non-uniform distribution to netem packet scheduler, from Yousuk Seung. - Add UDP GSO support to mlx5e, from Boris Pismenny. - Support offloading of Team LAG in NFP, from John Hurley. - Allow to configure TX queue selection based upon RX queue, from Amritha Nambiar. - Support ethtool ring size configuration in aquantia, from Anton Mikaev. - Support DSCP and flowlabel per-transport in SCTP, from Xin Long. - Support list based batching and stack traversal of SKBs, this is very exciting work. From Edward Cree. - Busyloop optimizations in vhost_net, from Toshiaki Makita. - Introduce the ETF qdisc, which allows time based transmissions. IGB can offload this in hardware. From Vinicius Costa Gomes. - Add parameter support to devlink, from Moshe Shemesh. - Several multiplication and division optimizations for BPF JIT in nfp driver, from Jiong Wang. - Lots of prepatory work to make more of the packet scheduler layer lockless, when possible, from Vlad Buslov. - Add ACK filter and NAT awareness to sch_cake packet scheduler, from Toke Høiland-Jørgensen. - Support regions and region snapshots in devlink, from Alex Vesker. - Allow to attach XDP programs to both HW and SW at the same time on a given device, with initial support in nfp. From Jakub Kicinski. - Add TLS RX offload and support in mlx5, from Ilya Lesokhin. - Use PHYLIB in r8169 driver, from Heiner Kallweit. - All sorts of changes to support Spectrum 2 in mlxsw driver, from Ido Schimmel. - PTP support in mv88e6xxx DSA driver, from Andrew Lunn. - Make TCP_USER_TIMEOUT socket option more accurate, from Jon Maxwell. - Support for templates in packet scheduler classifier, from Jiri Pirko. - IPV6 support in RDS, from Ka-Cheong Poon. - Native tproxy support in nf_tables, from Máté Eckl. - Maintain IP fragment queue in an rbtree, but optimize properly for in-order frags. From Peter Oskolkov. - Improvde handling of ACKs on hole repairs, from Yuchung Cheng" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1996 commits) bpf: test: fix spelling mistake "REUSEEPORT" -> "REUSEPORT" hv/netvsc: Fix NULL dereference at single queue mode fallback net: filter: mark expected switch fall-through xen-netfront: fix warn message as irq device name has '/' cxgb4: Add new T5 PCI device ids 0x50af and 0x50b0 net: dsa: mv88e6xxx: missing unlock on error path rds: fix building with IPV6=m inet/connection_sock: prefer _THIS_IP_ to current_text_addr net: dsa: mv88e6xxx: bitwise vs logical bug net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd() ieee802154: hwsim: using right kind of iteration net: hns3: Add vlan filter setting by ethtool command -K net: hns3: Set tx ring' tc info when netdev is up net: hns3: Remove tx ring BD len register in hns3_enet net: hns3: Fix desc num set to default when setting channel net: hns3: Fix for phy link issue when using marvell phy driver net: hns3: Fix for information of phydev lost problem when down/up net: hns3: Fix for command format parsing error in hclge_is_all_function_id_zero net: hns3: Add support for serdes loopback selftest bnxt_en: take coredump_record structure off stack ...
2018-08-15RDMA/hns: Fix usage of bitmap allocation functions return valuesGal Pressman2-2/+5
hns bitmap allocation functions return 0 on success and -1 on failure. Callers of these functions wrongly used their return value as an errno, fix that by making a proper conversion. Fixes: a598c6f4c5a8 ("IB/hns: Simplify function of pd alloc and qp alloc") Signed-off-by: Gal Pressman <[email protected]> Acked-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-14qedr: Add user space support for SRQYuval Bason2-44/+191
This patch adds support for SRQ's created in user space and update qedr_affiliated_event to deal with general SRQ events. Signed-off-by: Michal Kalderon <[email protected]> Signed-off-by: Yuval Bason <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-14qedr: Add support for kernel mode SRQ'sYuval Bason5-13/+458
Implement the SRQ specific verbs and update the poll_cq verb to deal with SRQ completions. Signed-off-by: Michal Kalderon <[email protected]> Signed-off-by: Yuval Bason <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-14qedr: Add wrapping generic structure for qpidr and adjust idr routines.Yuval Bason4-29/+31
Today, we are using idr mechanism for QP's only. This patch prepares the qedr_idr stuctures and the idr routines for both QP's and SRQ's. Signed-off-by: Yuval Bason <[email protected]> Signed-off-by: Michal Kalderon <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-14IB/mlx5: Fix leaking stack memory to userspaceJason Gunthorpe1-1/+1
mlx5_ib_create_qp_resp was never initialized and only the first 4 bytes were written. Fixes: 41d902cb7c32 ("RDMA/mlx5: Fix definition of mlx5_ib_create_qp_resp") Cc: <[email protected]> Acked-by: Leon Romanovsky <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-13IB/uverbs: Use uverbs_alloc for allocationsJason Gunthorpe1-53/+30
Several handlers need temporary allocations for the life of the method, switch them to use the uverbs_alloc allocator. Signed-off-by: Jason Gunthorpe <[email protected]> Reviewed-by: Leon Romanovsky <[email protected]>
2018-08-10IB/uverbs: Have the core code create the uverbs_root_specJason Gunthorpe2-29/+17
There is no reason for drivers to do this, the core code should take of everything. The drivers will provide their information from rodata to describe their modifications to the core's base uapi specification. The core uses this to build up the runtime uapi for each device. Signed-off-by: Jason Gunthorpe <[email protected]> Reviewed-by: Michael J. Ruhl <[email protected]> Reviewed-by: Leon Romanovsky <[email protected]>
2018-08-08iw_cxgb4: pass window scale in flowc work requestPotnuri Bharat Teja2-24/+28
This will allow FW to not send more data to TP (which would then need to be buffered). Pass the negotiated TCP window scale to FW in the FLOWC WR. Also refactor send_flowc() a bit to clean it up. Signed-off-by: Steve Wise <[email protected]> Signed-off-by: Potnuri Bharat Teja <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-08RDMA/mlx5: Fix shift overflow in mlx5_ib_create_wqLeon Romanovsky1-1/+3
[ 61.182439] UBSAN: Undefined behaviour in drivers/infiniband/hw/mlx5/qp.c:5366:34 [ 61.183673] shift exponent 4294967288 is too large for 32-bit type 'unsigned int' [ 61.185530] CPU: 0 PID: 639 Comm: qp Not tainted 4.18.0-rc1-00037-g4aa1d69a9c60-dirty #96 [ 61.186981] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-2.fc27 04/01/2014 [ 61.188315] Call Trace: [ 61.188661] dump_stack+0xc7/0x13b [ 61.190427] ubsan_epilogue+0x9/0x49 [ 61.190899] __ubsan_handle_shift_out_of_bounds+0x1ea/0x22f [ 61.197040] mlx5_ib_create_wq+0x1c99/0x1d50 [ 61.206632] ib_uverbs_ex_create_wq+0x499/0x820 [ 61.213892] ib_uverbs_write+0x77e/0xae0 [ 61.248018] vfs_write+0x121/0x3b0 [ 61.249831] ksys_write+0xa1/0x120 [ 61.254024] do_syscall_64+0x7c/0x2a0 [ 61.256178] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.259211] RIP: 0033:0x7f54bab70e99 [ 61.262125] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 [ 61.268678] RSP: 002b:00007ffe1541c318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 61.271076] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f54bab70e99 [ 61.273795] RDX: 0000000000000070 RSI: 0000000020000240 RDI: 0000000000000003 [ 61.276982] RBP: 00007ffe1541c330 R08: 00000000200078e0 R09: 0000000000000002 [ 61.280035] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004005c0 [ 61.283279] R13: 00007ffe1541c420 R14: 0000000000000000 R15: 0000000000000000 Cc: <[email protected]> # 4.7 Fixes: 79b20a6c3014 ("IB/mlx5: Add receive Work Queue verbs") Cc: syzkaller <[email protected]> Reported-by: Noa Osherovich <[email protected]> Signed-off-by: Leon Romanovsky <[email protected]> Signed-off-by: Kees Cook <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-02RDMA/netdev: Use priv_destructor for netdev cleanupJason Gunthorpe1-10/+0
Now that the unregister_netdev flow for IPoIB no longer relies on external code we can now introduce the use of priv_destructor and needs_free_netdev. The rdma_netdev flow is switched to use the netdev common priv_destructor instead of the special free_rdma_netdev and the IPOIB ULP adjusted: - priv_destructor needs to switch to point to the ULP's destructor which will then call the rdma_ndev's in the right order - We need to be careful around the error unwind of register_netdev as it sometimes calls priv_destructor on failure - ULPs need to use ndo_init/uninit to ensure proper ordering of failures around register_netdev Switching to priv_destructor is a necessary pre-requisite to using the rtnl new_link mechanism. The VNIC user for rdma_netdev should also be revised, but that is left for another patch. Signed-off-by: Jason Gunthorpe <[email protected]> Signed-off-by: Denis Drozdov <[email protected]> Signed-off-by: Leon Romanovsky <[email protected]>
2018-08-02iw_cxgb4: Support FW write completion WRPotnuri Bharat Teja4-2/+183
To optimize NVME-oF READ IOPs, use a specialized WQE that combines the RDMA WRITE and SEND_INV WR chain submitted by the NVME-oF target driver. This reduces uP overhead per NVME-oF IO, and results in over 10% improvement in NVME-oF 4K READ IOPs. Signed-off-by: Potnuri Bharat Teja <[email protected]> Signed-off-by: Steve Wise <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-02iw_cxgb4: RDMA write with immediate supportPotnuri Bharat Teja4-15/+79
Adds iw_cxgb4 functionality to support RDMA_WRITE_WITH_IMMEDATE opcode. Signed-off-by: Potnuri Bharat Teja <[email protected]> Signed-off-by: Steve Wise <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-02rdma/cxgb4: fix some info leaksDan Carpenter1-4/+3
In c4iw_create_qp() there are several struct members which potentially aren't inintialized like uresp.rq_key. I've fixed this code before in in commit ae1fe07f3f42 ("RDMA/cxgb4: Fix stack info leak in c4iw_create_qp()") so this time I'm just going to take a big hammer approach and memset the whole struct to zero. Hopefully, it will stay fixed this time. In c4iw_create_srq() we don't clear uresp.reserved. Fixes: 6a0b6174d35a ("rdma/cxgb4: Add support for kernel mode SRQ's") Signed-off-by: Dan Carpenter <[email protected]> Acked-by: Raju Rangoju <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-02RDMA/hns: Support flush cqe for hip08 in kernel spaceYixian Liu4-20/+240
According to IB protocol, there are some cases that work requests must return the flush error completion status through the completion queue. Due to hardware limitation, the driver needs to assist the flush process. This patch adds the support of flush cqe for hip08 in the cases that needed, such as poll cqe, post send, post recv and aeqe handle. The patch also considered the compatibility between kernel and user space. Signed-off-by: Yixian Liu <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-08-01IB/uverbs: Do not pass struct ib_device to the ioctl methodsJason Gunthorpe2-27/+24
This does the same as the patch before, except for ioctl. The rules are the same, but for the ioctl methods the core code handles setting up the uobject. - Retrieve the ib_dev from the uobject->context->device. This is safe under ioctl as the core has already done rdma_alloc_begin_uobject and so CREATE calls are entirely protected by the rwsem. - Retrieve the ib_dev from uobject->object - Call ib_uverbs_get_ucontext() Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-31RDMA: Fix return code check in rdma_set_cq_moderationKamal Heib1-1/+1
The proper return code is "-EOPNOTSUPP" when the modify_cq() callback is not supported, all drivers should generate this and all users should check for it when detecting not supported functionality. Signed-off-by: Kamal Heib <[email protected]> Acked-by: Leon Romanovsky <[email protected]> (for mlx5) Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-31rdma/cxgb4: Simplify a structure initializationBart Van Assche1-1/+1
This patch avoids that sparse reports the following warning: drivers/infiniband/hw/cxgb4/qp.c:2269:34: warning: Using plain integer as NULL pointer Signed-off-by: Bart Van Assche <[email protected]> Acked-by: Steve Wise <[email protected]> Acked-by: Raju Rangoju <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-31rdma/cxgb4: Fix SRQ endianness annotationsBart Van Assche1-1/+2
This patch avoids that sparse complains about casts to restricted __be32. Fixes: a3cdaa69e4ae ("cxgb4: Adds CPL support for Shared Receive Queues") Signed-off-by: Bart Van Assche <[email protected]> Acked-by: Steve Wise <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-31rdma/cxgb4: Remove a set-but-not-used variableBart Van Assche1-2/+0
This patch avoids that the following warning is reported when building with W=1: drivers/infiniband/hw/cxgb4/cm.c:1860:5: warning: variable 'status' set but not used [-Wunused-but-set-variable] u8 status; ^~~~~~ Fixes: 6a0b6174d35a ("rdma/cxgb4: Add support for kernel mode SRQ's") Signed-off-by: Bart Van Assche <[email protected]> Acked-by: Steve Wise <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30RDMA/hns: Program the tclass and flow label into the hardwareLijun Ou4-10/+13
This was missed in a few places, and was just using 0. Also correct the spelling of HNS_ROCE_FLOW_LABEL_MASK Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30RDMA/hns: Use macro instead of magic numberLijun Ou2-2/+5
This patch mainly uses CMD_CSQ_DESC_NUM instead of magic number in order to improve readability. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30RDMA/hns: Modify qp will return errno when qp type is illegalLijun Ou1-0/+1
Set for ret was missing in the error path here, resulting in incorrect error code for modify_qp. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30RDMA/hns: Assign the value for vlan field of qp contextLijun Ou2-6/+13
This patch mainly fills the correct value into the vlan id field of qp context as well as update the vlan field name according to the latest hardware user manual. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30RDMA/hns: Only assgin the fields of the av if IB_QP_AV bit is setLijun Ou1-31/+80
Only when the IB_QP_AV flag of attr_mask is set is it valid to assign the related fields of the av into the qp context. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30RDMA/providers: Remove pointless functionsKamal Heib13-239/+0
The rdma core is taking care of return the right error code when the rdma device callbacks aren't supported. Signed-off-by: Kamal Heib <[email protected]> Acked-by: Shiraz Saleem <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30RDMA/providers: Fix return value from create_srq callbacksKamal Heib2-2/+2
The proper return code is "-EOPNOTSUPP" when the create_srq() callback is not supported. Signed-off-by: Kamal Heib <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30IB/mlx4: Use 4K pages for kernel QP's WQE bufferJack Morgenstein2-176/+34
In the current implementation, the driver tries to allocate contiguous memory, and if it fails, it falls back to 4K fragmented allocation. Once the memory is fragmented, the first allocation might take a lot of time, and even fail, which can cause connection failures. This patch changes the logic to always allocate with 4K granularity, since it's more robust and more likely to succeed. This patch was tested with Lustre and no performance degradation was observed. Note: This commit eliminates the "shrinking WQE" feature. This feature depended on using vmap to create a virtually contiguous send WQ. vmap use was abandoned due to problems with several processors (see the commit cited below). As a result, shrinking WQE was available only with physically contiguous send WQs. Allocating such send WQs caused the problems described above. Therefore, as a side effect of eliminating the use of large physically contiguous send WQs, the shrinking WQE feature became unavailable. Warning example: worker/20:1: page allocation failure: order:8, mode:0x80d0 CPU: 20 PID: 513 Comm: kworker/20:1 Tainted: G OE ------------ Workqueue: ib_cm cm_work_handler [ib_cm] Call Trace: [<ffffffff81686d81>] dump_stack+0x19/0x1b [<ffffffff81186160>] warn_alloc_failed+0x110/0x180 [<ffffffff8118a954>] __alloc_pages_nodemask+0x9b4/0xba0 [<ffffffff811ce868>] alloc_pages_current+0x98/0x110 [<ffffffff81184fae>] __get_free_pages+0xe/0x50 [<ffffffff8133f6fe>] swiotlb_alloc_coherent+0x5e/0x150 [<ffffffff81062551>] x86_swiotlb_alloc_coherent+0x41/0x50 [<ffffffffa056b4c4>] mlx4_buf_direct_alloc.isra.7+0xc4/0x180 [mlx4_core] [<ffffffffa056b73b>] mlx4_buf_alloc+0x1bb/0x260 [mlx4_core] [<ffffffffa0b15496>] create_qp_common+0x536/0x1000 [mlx4_ib] [<ffffffff811c6ef7>] ? dma_pool_free+0xa7/0xd0 [<ffffffffa0b163c1>] mlx4_ib_create_qp+0x3b1/0xdc0 [mlx4_ib] [<ffffffffa0b01bc2>] ? mlx4_ib_create_cq+0x2d2/0x430 [mlx4_ib] [<ffffffffa0b21f20>] mlx4_ib_create_qp_wrp+0x10/0x20 [mlx4_ib] [<ffffffffa08f152a>] ib_create_qp+0x7a/0x2f0 [ib_core] [<ffffffffa06205d4>] rdma_create_qp+0x34/0xb0 [rdma_cm] [<ffffffffa08275c9>] kiblnd_create_conn+0xbf9/0x1950 [ko2iblnd] [<ffffffffa074077a>] ? cfs_percpt_unlock+0x1a/0xb0 [libcfs] [<ffffffffa0835519>] kiblnd_passive_connect+0xa99/0x18c0 [ko2iblnd] Fixes: 73898db04301 ("net/mlx4: Avoid wrong virtual mappings") Signed-off-by: Jack Morgenstein <[email protected]> Signed-off-by: Leon Romanovsky <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30IB/uverbs: Add UVERBS_ATTR_FLAGS_IN to the specs languageJason Gunthorpe2-15/+17
This clearly indicates that the input is a bitwise combination of values in an enum, and identifies which enum contains the definition of the bits. Special accessors are provided that handle the mandatory validation of the allowed bits and enforce the correct type for bitwise flags. If we had introduced this at the start then the kabi would have uniformly used u64 data to pass flags, however today there is a mixture of u64 and u32 flags. All places are converted to accept both sizes and the accessor fixes it. This allows all existing flags to grow to u64 in future without any hassle. Finally all flags are, by definition, optional. If flags are not passed the accessor does not fail, but provides a value of zero. Signed-off-by: Jason Gunthorpe <[email protected]> Reviewed-by: Leon Romanovsky <[email protected]>
2018-07-30RDMA, core and ULPs: Declare ib_post_send() and ib_post_recv() arguments constBart Van Assche34-196/+206
Since neither ib_post_send() nor ib_post_recv() modify the data structure their second argument points at, declare that argument const. This change makes it necessary to declare the 'bad_wr' argument const too and also to modify all ULPs that call ib_post_send(), ib_post_recv() or ib_post_srq_recv(). This patch does not change any functionality but makes it possible for the compiler to verify whether the ib_post_(send|recv|srq_recv) really do not modify the posted work request. To make this possible, only one cast had to be introduce that casts away constness, namely in rpcrdma_post_recvs(). The only way I can think of to avoid that cast is to introduce an additional loop in that function or to change the data type of bad_wr from struct ib_recv_wr ** into int (an index that refers to an element in the work request list). However, both approaches would require even more extensive changes than this patch. Signed-off-by: Bart Van Assche <[email protected]> Reviewed-by: Chuck Lever <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30IB/mlx5, ib_post_send(), IB_WR_REG_SIG_MR: Do not modify the 'wr' argumentBart Van Assche1-12/+18
Since the next patch will constify the wr pointer, do not modify the data that pointer points at. Signed-off-by: Bart Van Assche <[email protected]> Reviewed-by: Sagi Grimberg <[email protected]> Cc: Saeed Mahameed <[email protected]> Acked-by: Leon Romanovsky <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-30RDMA: Constify the argument of the work request conversion functionsBart Van Assche15-77/+85
When posting a send work request, the work request that is posted is not modified by any of the RDMA drivers. Make this explicit by constifying most ib_send_wr pointers in RDMA transport drivers. Signed-off-by: Bart Van Assche <[email protected]> Reviewed-by: Sagi Grimberg <[email protected]> Reviewed-by: Steve Wise <[email protected]> Reviewed-by: Dennis Dalessandro <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-26RDMA/hns: Enable modify_cq for uverbs.Lijun Ou1-0/+3
The driver implements the modify_cq callback, but did not set the bit to expose it to userspace. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-26RDMA/hns: Update the data type of immediate dataLijun Ou2-7/+11
Because the data structure of hip08 is little endian, it needs to fix the immediate field of wqe and cqe into __le32. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-26RDMA/hns: Use delay instead of usleepLijun Ou1-2/+2
In order to avoid using usleep function in lock function, we use delay function instead of it. Besides, it also use brackets for standardized the computed order. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-26RDMA/hns: Add illegal hop_num judgementLijun Ou1-0/+3
When hop_num is more than three, it need to return -EINVAL. This patch fixes it. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-26RDMA/hns: Return correct error code from hns_roce_v1_rsv_lp_qp()Lijun Ou1-1/+2
When create loop qp fail, it will return the correct result when modify_qp() fails. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-26RDMA/hns: Add 50GE type of hnae3 device matchLijun Ou1-0/+2
This patch adds PCI matching for the hns 50GE NIC. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-26RDMA/hns: Do not overwrite the error code during error unwind in hns_roce_initLijun Ou1-2/+1
When init cmq fail in initial flow of RoCE, it should return the errno of cmq_init function, not of the rest call. Signed-off-by: Lijun Ou <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-26IB/mlx5: avoid excessive warning msgs when creating VFs on 2nd portQing Huang1-2/+2
When a CX5 device is configured in dual-port RoCE mode, after creating many VFs against port 1, creating the same number of VFs against port 2 will flood kernel/syslog with something like "mlx5_*:mlx5_ib_bind_slave_port:4266:(pid 5269): port 2 already affiliated." So basically, when traversing mlx5_ib_dev_list, mlx5_ib_add_slave_port() repeatedly attempts to bind the new mpi structure to every device on the list until it finds an unbound device. Change the log level from warn to dbg to avoid log flooding as the warning should be harmless. Signed-off-by: Qing Huang <[email protected]> Reviewed-by: Daniel Jurgens <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-26RDMA/usnic: Suppress a compiler warningBart Van Assche2-3/+3
This patch avoids that the following compiler warning is reported when building with gcc 8 and W=1: drivers/infiniband/hw/usnic/usnic_fwd.c:95:2: warning: 'strncpy' output may be truncated copying 16 bytes from a string of length 20 [-Wstringop-truncation] strncpy(ufdev->name, netdev_name(ufdev->netdev), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sizeof(ufdev->name) - 1); ~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Bart Van Assche <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-25IB/usnic: usnic should not select INFINIBAND_USER_ACCESSJason Gunthorpe1-1/+1
This driver doesn't provide any kernel services, it only provides an interface via uverbs, so it should depend on, not select, uverbs support. Signed-off-by: Jason Gunthorpe <[email protected]> Reviewed-by: Leon Romanovsky <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-25rdma/cxgb4: Add support for kernel mode SRQ'sRaju Rangoju8-167/+929
This patch implements the srq specific verbs such as create/destroy/modify and post_srq_recv. And adds srq specific structures and defines to t4.h and uapi. Also updates the cq poll logic to deal with completions that are associated with the SRQ's. This patch also handles kernel mode SRQ_LIMIT events as well as flushed SRQ buffers Signed-off-by: Raju Rangoju <[email protected]> Reviewed-by: Steve Wise <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2018-07-25rdma/cxgb4: Add support for srq functions & structsRaju Rangoju3-1/+173
This patch adds kernel mode t4_srq structures and support functions, uapi structures and defines, as well as firmware work request structures. Signed-off-by: Raju Rangoju <[email protected]> Reviewed-by: Steve Wise <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
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