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2015-12-24IB/iser: Fix module init not cleaning up on error flowRoi Dayan1-3/+6
Destroy workqueue on transport register error, also release kmem cache on workqueue allocation error. Signed-off-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24IB/core: constify mmu_notifier_ops structuresJulia Lawall1-1/+1
This mmu_notifier_ops structure is never modified, so declare it as const, like the other mmu_notifier_ops structures. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Reviewed-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24IB/iser: constify iser_reg_ops structureJulia Lawall2-3/+3
The iser_reg_ops structures are never modified, so declare them as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24RDMA/nes: constify nes_cm_ops structureJulia Lawall2-2/+2
The nes_cm_ops structure is never modified, so declare it as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24IB/mlx5: report tx/rx checksum cap in query resultsBodong Wang1-0/+4
This patch will report the tx/rx checksum cap for raw qp via the query device results. Signed-off-by: Bodong Wang <bodong@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24IB/mlx4: Convert kmalloc to kmalloc_array for checkpatchLeon Romanovsky2-3/+3
Convert kmalloc to be kmalloc_array to fix warnings below: WARNING: Prefer kmalloc_array over kmalloc with multiply + qp->sq.wrid = kmalloc(qp->sq.wqe_cnt * sizeof(u64), WARNING: Prefer kmalloc_array over kmalloc with multiply + qp->rq.wrid = kmalloc(qp->rq.wqe_cnt * sizeof(u64), WARNING: Prefer kmalloc_array over kmalloc with multiply + srq->wrid = kmalloc(srq->msrq.max * sizeof(u64), Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24IB/mlx4: Suppress non-fatal memory allocationsLeon Romanovsky2-3/+6
Failure in kmalloc memory allocations will throw a warning about it. Such warnings are not needed anymore, since in commit 0ef2f05c7e02 ("IB/mlx4: Use vmalloc for WR buffers when needed"), fallback mechanism from kmalloc() to __vmalloc() was added. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24IB/mlx5: Advertise atomic capabilities in query deviceEran Ben Elisha2-1/+32
In order to ensure IB spec atomic correctness in atomic operations, if HW is configured to host endianness, advertise IB_ATOMIC_HCA. if not, advertise IB_ATOMIC_NONE. Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Reviewed-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24net/mlx5_core: Add setting ATOMIC endian modeEran Ben Elisha2-9/+70
HW is capable of 2 requestor endianness modes for standard 8 Bytes atomic: BE (0x0) and host endianness (0x1). Read the supported modes from hca atomic capabilities and configure HW to host endianness mode if supported. Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Reviewed-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24iw_cxgb3: Fix incorrectly returning error on successHariprasad S1-2/+2
The cxgb3_*_send() functions return NET_XMIT_ values, which are positive integers values. So don't treat positive return values as an error. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24iw_cxgb4: Pass qid range to user space driverHariprasad S3-1/+12
Enhances the t4_dev_status_page to pass the qid start and size attributes from iw_cxgb4 to libcxgb4. Bump the ABI Version to 3 -> To allow libcxgb4 to detect old drivers and revert to the old way of computing the qid ranges. Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-24IB/mad: Ensure fairness in ib_mad_completion_handlerDean Luick1-0/+18
It was found that when a process was rapidly sending MADs other processes could be hung in their unregister calls. This would happen when process A was injecting packets fast enough that the single threaded workqueue was never exiting ib_mad_completion_handler. Therefore when process B called flush_workqueue via the unregister call it would hang until process A stopped sending MADs. The fix is to periodically reschedule ib_mad_completion_handler after processing a large number of completions. The number of completions chosen was decided based on the defaults for the recv queue size. However, it was kept fixed such that increasing those queue sizes would not adversely affect fairness in the future. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Dean Luick <dean.luick@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Add driver cross-channel supportLeon Romanovsky5-11/+72
Add support of cross-channel functionality to mlx5 driver. This includes ability to ignore overrun for CQ which intended for cross-channel, export device capability and configure the QP to be sync master/slave queues. The cross-channel enabled QP supports combination of three possible properties: * WQE processing on the receive queue of this QP * WQE processing on the send queue of this QP * WQE are supported on the send queue Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/core: Add cross-channel supportLeon Romanovsky2-1/+15
The cross-channel feature allows to execute WQEs that involve synchronization of I/O operations’ on different QPs. This capability enables to program complex flows with a single function call, hereby significantly reducing overhead associated with I/O processing. Cross-channel operations support is indicated by HCA capability information. The queue pairs can be configured to work as a “sync master queue” or “sync slave queues”. The added flags are: 1. Device capability flag IB_DEVICE_CROSS_CHANNEL for the devices that can perform cross-channel operations. 2. CQ property flag IB_CQ_FLAGS_IGNORE_OVERRUN to disable CQ overrun check. This check is useless in cross-channel scenario. 3. QP property flags to indicate if queues are slave or master: * IB_QP_CREATE_MANAGED_SEND indicates that posted send work requests will not be executed immediately and requires enabling. * IB_QP_CREATE_MANAGED_RECV indicates that posted receive work requests will not be executed immediately and requires enabling. * IB_QP_CREATE_CROSS_CHANNEL declares the QP to work in cross-channel mode. If IB_QP_CREATE_MANAGED_SEND and IB_QP_CREATE_MANAGED_RECV are not provided, this QP will be sync master queue, else it will be sync slave. Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/core: Align coding style of ib_device_cap_flags structureLeon Romanovsky1-30/+30
Modify enum ib_device_cap_flags such that other patches which add new enum values pass strict checkpatch.pl checks. Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Mmap the HCA's core clock register to user-spaceMatan Barak2-1/+31
In order to read the HCA's current cycles register, we need to map it to user-space. Add support to map this register via mmap command. Signed-off-by: Matan Barak <matanb@mellanox.com> Reviewed-by: Moshe Lazer <moshel@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Add hca_core_clock_offset to udata in init_ucontextMatan Barak4-12/+47
Pass hca_core_clock_offset to user-space is mandatory in order to let the user-space read the free-running clock register from the right offset in the memory mapped page. Passing this value is done by changing the vendor's command and response of init_ucontext to be in extensible form. Signed-off-by: Matan Barak <matanb@mellanox.com> Reviewed-by: Moshe Lazer <moshel@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Add support for hca_core_clock and timestamp_maskMatan Barak2-3/+8
Reporting the hca_core_clock (in kHZ) and the timestamp_mask in query_device extended verb. timestamp_mask is used by users in order to know what is the valid range of the raw timestamps, while hca_core_clock reports the clock frequency that is used for timestamps. Signed-off-by: Matan Barak <matanb@mellanox.com> Reviewed-by: Moshe Lazer <moshel@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/core: Add ib_is_udata_clearedMatan Barak1-0/+27
Extending core and vendor verb commands require us to check that the unknown part of the user's given command is all zeros. Adding ib_is_udata_cleared in order to do so. Signed-off-by: Matan Barak <matanb@mellanox.com> Reviewed-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Add create_cq extended commandMatan Barak1-0/+7
In order to create a CQ that supports timestamp, mlx5 needs to support the extended create CQ command with the timestamp flag. Signed-off-by: Matan Barak <matanb@mellanox.com> Reviewed-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/core: Display extended counter set if availableChristoph Lameter2-3/+108
Check if the extended counters are available and if so create the proper extended and additional counters. Signed-off-by: Christoph Lameter <cl@linux.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Hal Rosenstock <hal@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/core: Specify attribute_id in port_table_attributeChristoph Lameter1-2/+5
Add the attr_id on port_table_attribute since we will have to add a different port_table_attribute for the extended attribute soon. Reviewed-by: Hal Rosenstock <hal@mellanox.com> Signed-off-by: Christoph Lameter <cl@linux.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/core: Create get_perf_mad function in sysfs.cChristoph Lameter1-22/+40
Create a new function to retrieve performance management data from the existing code in get_pma_counter(). Reviewed-by: Hal Rosenstock <hal@mellanox.com> Signed-off-by: Christoph Lameter <cl@linux.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23MAINTAINERS: Assign maintainer to Mellanox mlx4 core and IB driversOr Gerlitz1-0/+19
The driver was written originally by Roland Dreier, currently there's no official maintainer. Yishai steps in as maintainer. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Cc: Roland Dreier <roland@kernel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23MAINTAINERS: Assign new maintainers to Mellanox mlx5 core and IB driversOr Gerlitz1-8/+7
Matan and Leon step in as co-maintainers to replace Eli Cohen who wrote and maintained the core and IB drivers. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB: remove the write-only usecnt field from struct ib_mrChristoph Hellwig6-21/+1
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@sandisk.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB: remove the struct ib_phys_buf definitionChristoph Hellwig1-5/+0
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core] Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23ehca: stop using struct ib_phys_bufChristoph Hellwig2-53/+46
And simplify the calling convention for full-memory registrations. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core] Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23amso1100: fold c2_reg_phys_mr into c2_get_dma_mrChristoph Hellwig1-57/+14
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core] Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23nes: simplify nes_reg_phys_mr calling conventionsChristoph Hellwig3-116/+37
Just pass and address/size pair instead of an ib_phys_buf array. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core] Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23cxgb3: simplify iwch_get_dma_wrChristoph Hellwig3-126/+26
Fold simplified versions of build_phys_page_list and iwch_register_phys_mem into iwch_get_dma_wr now that no other callers are left. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core] Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB: remove in-kernel support for memory windowsChristoph Hellwig27-381/+16
Remove the unused ib_allow_mw and ib_bind_mw functions, remove the unused IB_WR_BIND_MW and IB_WC_BIND_MW opcodes and move ib_dealloc_mw into the uverbs module. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core] Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB: remove support for phys MRsChristoph Hellwig28-1144/+15
We have stopped using phys MRs in the kernel a while ago, so let's remove all the cruft used to implement them. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core] Reviewed-By: Devesh Sharma<devesh.sharma@avagotech.com> [ocrdma] Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB: remove ib_query_mrChristoph Hellwig5-77/+0
This functionality has no users and was only supported by the staged out EHCA driver. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core] Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB: start documenting device capabilitiesChristoph Hellwig1-0/+18
Just IB_DEVICE_LOCAL_DMA_LKEY and IB_DEVICE_MEM_MGT_EXTENSIONS for now as I'm most familar with those. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/IPoIB: Move multicast specific code out of ipoib_main.cChristoph Lameter3-14/+23
Code cleanup to move multicast specific code that checks for a sendonly join to ipoib_multicast.c. This allows the removal of the export of __ipoib_mcast_find(). Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/IPoIB: factor out common multicast list removal codeChristoph Lameter3-17/+17
Code cleanup to remove multicast specific code from ipoib_main.c The removal of a list of multicast groups occurs in three places. Create a new function ipoib_mcast_remove_list(). Use this new function in ipoib_main.c too. That in turn allows the dropping of two functions that were exported from ipoib_multicast.c for expiration of mc groups. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Support RoCEAchiad Shochat1-4/+44
Advertise RoCE support for IB/core layer and set the hardware to work in RoCE mode. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Add RoCE fields to Address VectorAchiad Shochat5-25/+96
Set the address handle and QP address path fields according to the link layer type (IB/Eth). Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Support IB device's callbacks for adding/deleting GIDsAchiad Shochat2-0/+109
These callbacks write into the mlx5 RoCE address table. Upon del_gid we write a zero'd GID. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Set network_hdr_type upon RoCE responder completionAchiad Shochat2-0/+23
When handling a responder completion, if the link layer is Ethernet, set the work completion network_hdr_type field according to CQE's info and the IB_WC_WITH_NETWORK_HDR_TYPE flag. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Extend query_device/port to support RoCEAchiad Shochat2-13/+69
Using the vport access functions to retrieve the Ethernet specific information and return this information in ib_query_device and ib_query_port. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23net/mlx5_core: Introduce access functions to query vport RoCE fieldsAchiad Shochat3-1/+76
Introduce access functions to query NIC vport system_image_guid, node_guid and qkey_viol_cntr. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23net/mlx5_core: Introduce access functions to enable/disable RoCEAchiad Shochat2-0/+55
A mlx5 Ethernet port must be explicitly enabled for RoCE. When RoCE is not enabled on the port, the NIC will refuse to create QPs attached to it and incoming RoCE packets will be considered by the NIC as plain Ethernet packets. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23net/mlx5_core: Break down the vport mac address query functionAchiad Shochat1-10/+17
Introduce a new function called mlx5_query_nic_vport_context(). This function gets all the NIC vport attributes from the device. The MAC address is just one of the NIC vport attributes, so mlx5_query_nic_vport_mac_address() is now just a wrapper function above mlx5_query_nic_vport_context(). More NIC vport attributes will be used in following commits. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Support IB device's callback for getting its netdevAchiad Shochat2-1/+73
For Eth ports only: Maintain a net device pointer in mlx5_ib_device and update it upon NETDEV_REGISTER and NETDEV_UNREGISTER events if the net-device and IB device have the same PCI parent device. Implement the get_netdev callback to return this net device. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/mlx5: Support IB device's callback for getting the link layerAchiad Shochat1-6/+19
Make the existing mlx5_ib_port_link_layer() signature match the ib device callback signature (add port_num parameter). Refactor it to use a sub function so that the link layer could be queried also before the ibdev is created. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/usnic: delete unneeded IS_ERR testJulia Lawall1-2/+2
kzalloc doesn't return ERR_PTR, so there is no need to test for it. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,e; @@ * x = kzalloc(...) ... when != x = e * IS_ERR_OR_NULL(x) // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Reviewed-by: Dave Goodell <dgoodell@cisco.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/usnic: Handle 0 counts in resource allocationNelson Escobar1-25/+29
Signed-off-by: Dave Goodell <dgoodell@cisco.com> Reviewed-by: Reese Faucette <rfaucett@cisco.com> Reviewed-by: Xuyang Wang <xuywang@cisco.com> Signed-off-by: Nelson Escobar <neescoba@cisco.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-12-23IB/usnic: Fix resource leak in error caseNelson Escobar1-1/+1
Signed-off-by: Dave Goodell <dgoodell@cisco.com> Reviewed-by: Reese Faucette <rfaucett@cisco.com> Reviewed-by: Xuyang Wang <xuywang@cisco.com> Signed-off-by: Nelson Escobar <neescoba@cisco.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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