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path: root/drivers/infiniband/sw/rxe/rxe_loc.h (follow)
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2019-04-01IB: Pass only ib_udata in function prototypesShamir Rabinovitch1-9/+7
Now when ib_udata is passed to all the driver's object create/destroy APIs the ib_udata will carry the ib_ucontext for every user command. There is no need to also pass the ib_ucontext via the functions prototypes. Make ib_udata the only argument psssed. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19RDMA/rxe: Use driver_unregister and new unregistration APIJason Gunthorpe1-1/+1
rxe does not have correct locking for its registration/unregistration paths, use the core code to handle it instead. In this mode ib_unregister_device will also do the dealloc, so rxe is required to do clean up from a callback. The core code ensures that unregistration is done only once, and generally takes care of locking and concurrency problems for rxe. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04RDMA/rxe: Move rxe_init_av() to rxe_av.cKamal Heib1-0/+1
Move the function rxe_init_av() to rxe_av.c file and use it instead of calling rxe_av_from_attr() and rxe_av_fill_ip_info(), also remove the unused rxe_dev parameter from rxe_init_av(). Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Zhu Yanjun <yanjun.zhu@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-21IB/rxe: Remove unnecessary rxe variableZhu Yanjun1-4/+2
The variable rxe in the function is not used. So it is removed. Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-12-18RDMA: Cleanup undesired pd->uobject usageShamir Rabinovitch1-1/+1
Drivers should be using udata to determine if a method is invoked from user space or kernel space. A pd does not necessarily say a different objects is kernel or user. Transforming the tests to use udata eliminates a large number of uobject references from the drivers. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-11-08IB/rxe: move the variable into the function that uses itZhu Yanjun1-2/+3
The variable rxe is only used in the function rxe_xmit_packet, and the caller functions do not use it. So move this variable into the function rxe_xmit_packet. Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-10-17IB/rxe: Remove unnecessary enum valuesNathan Chancellor1-1/+1
Clang warns when an emumerated type is implicitly converted to another. drivers/infiniband/sw/rxe/rxe.c:106:27: warning: implicit conversion from enumeration type 'enum rxe_device_param' to different enumeration type 'enum ib_atomic_cap' [-Wenum-conversion] rxe->attr.atomic_cap = RXE_ATOMIC_CAP; ~ ^~~~~~~~~~~~~~ drivers/infiniband/sw/rxe/rxe.c:131:22: warning: implicit conversion from enumeration type 'enum rxe_port_param' to different enumeration type 'enum ib_port_state' [-Wenum-conversion] port->attr.state = RXE_PORT_STATE; ~ ^~~~~~~~~~~~~~ drivers/infiniband/sw/rxe/rxe.c:132:24: warning: implicit conversion from enumeration type 'enum rxe_port_param' to different enumeration type 'enum ib_mtu' [-Wenum-conversion] port->attr.max_mtu = RXE_PORT_MAX_MTU; ~ ^~~~~~~~~~~~~~~~ drivers/infiniband/sw/rxe/rxe.c:133:27: warning: implicit conversion from enumeration type 'enum rxe_port_param' to different enumeration type 'enum ib_mtu' [-Wenum-conversion] port->attr.active_mtu = RXE_PORT_ACTIVE_MTU; ~ ^~~~~~~~~~~~~~~~~~~ drivers/infiniband/sw/rxe/rxe.c:151:24: warning: implicit conversion from enumeration type 'enum rxe_port_param' to different enumeration type 'enum ib_mtu' [-Wenum-conversion] ib_mtu_enum_to_int(RXE_PORT_ACTIVE_MTU); ~~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~ 5 warnings generated. Use the appropriate values from the expected enumerated type so no conversion needs to happen then remove the unneeded definitions. Reported-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-08-30IB/rxe: Simplify rxe_find_route() to avoid GID query for netdevParav Pandit1-2/+1
rxe_prepare() is called on an skb which has ndev already initialized by rxe_init_packet(). Therefore avoid querying the GID attribute again and use the available netdevice from the skb->dev. Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Daniel Jurgens <danielj@mellanox.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Tested-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-06-18RDMA: Convert drivers to use sgid_attr instead of sgid_indexParav Pandit1-4/+1
The core code now ensures that all driver callbacks that receive an rdma_ah_attrs will have a sgid_attr's pointer if there is a GRH present. Drivers can use this pointer instead of calling a query function with sgid_index. This simplifies the drivers and also avoids races where a gid_index lookup may return different data if it is changed. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-04-27IB/rxe: remove unused function variableZhu Yanjun1-4/+4
In the functions rxe_mem_init_dma, rxe_mem_init_user, rxe_mem_init_fast and copy_data, the function variable rxe is not used. So this function variable rxe is removed. CC: Srinivas Eeda <srinivas.eeda@oracle.com> CC: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-04-27IB/rxe: Change rxe_rcv to return voidYuval Shaia1-2/+3
It always returns 0. Change return type to void. Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Zhu Yanjun <yanjun.zhu@oracle.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-03-15RDMA/rxe: Use structs to describe the uABI instead of opencodingJason Gunthorpe1-5/+8
Open coding pointer math is not acceptable for describing the uABI in RDMA. Provide structs for all the cases. The udata is casted to the struct as close to the verbs entry point as possible for maximum clarity. Function signatures and so forth are revised to allow for this. Tested-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-15RDMA/rxe: Get rid of confusing udata parameter to rxe_cq_chk_attrJason Gunthorpe1-1/+1
It isn't used and it couldn't possibly ever be used correctly. Tested-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-07IB/rxe: remove unnecessary rxe in rxe_sendZhu Yanjun1-3/+2
In the function rxe_send, the variable rxe is not used in it. So it should be removed. CC: Srinivas Eeda <srinivas.eeda@oracle.com> CC: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-31IB/rxe: remove redudant parameter in rxe_av_fill_ip_infoZhu Yanjun1-2/+1
In the function rxe_av_fill_ip_info, the parameter rxe is not used. So it is removed. CC: Srinivas Eeda <srinivas.eeda@oracle.com> CC: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-31IB/rxe: change the function rxe_av_fill_ip_info to voidZhu Yanjun1-1/+1
The function rxe_av_fill_ip_info always returns 0. So the function type is changed to void. CC: Srinivas Eeda <srinivas.eeda@oracle.com> CC: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-31IB/rxe: change the function to void from intZhu Yanjun1-1/+1
Since the function rxe_av_to_attr always return 0, the function type is changed to void. CC: Srinivas Eeda <srinivas.eeda@oracle.com> CC: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-31IB/rxe: remove unnecessary parameter in rxe_av_to_attrZhu Yanjun1-2/+1
In the function rxe_av_to_attr, the parameter rxe is not used. So it is removed. CC: Srinivas Eeda <srinivas.eeda@oracle.com> CC: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-31IB/rxe: change the function to void from intZhu Yanjun1-1/+1
The function rxe_av_from_attr always return 0. So change the function to void. CC: Srinivas Eeda <srinivas.eeda@oracle.com> CC: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-31IB/rxe: remove redudant parameter in functionZhu Yanjun1-2/+2
In the function rxe_av_from_attr, the parameter rxe is not used. So it is removed. CC: Srinivas Eeda <srinivas.eeda@oracle.com> CC: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-18RDMA/rxe: Fix a race condition in rxe_requester()Bart Van Assche1-1/+0
The rxe driver works as follows: * The send queue, receive queue and completion queues are implemented as circular buffers. * ib_post_send() and ib_post_recv() calls are serialized through a spinlock. * Removing elements from various queues happens from tasklet context. Tasklets are guaranteed to run on at most one CPU. This serializes access to these queues. See also rxe_completer(), rxe_requester() and rxe_responder(). * rxe_completer() processes the skbs queued onto qp->resp_pkts. * rxe_requester() handles the send queue (qp->sq.queue). * rxe_responder() processes the skbs queued onto qp->req_pkts. Since rxe_drain_req_pkts() processes qp->req_pkts, calling rxe_drain_req_pkts() from rxe_requester() is racy. Hence this patch. Reported-by: Moni Shoua <monis@mellanox.com> Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: stable@vger.kernel.org Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-25IB/rxe: Convert timers to use timer_setup()Kees Cook1-2/+2
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Moni Shoua <monis@mellanox.com> Cc: Doug Ledford <dledford@redhat.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Cc: linux-rdma@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-28IB/rxe: Remove dangling prototypeAndrew Boyer1-2/+0
Fixes: 8700e3e7c485 ("Soft RoCE driver") Signed-off-by: Andrew Boyer <andrew.boyer@dell.com> Acked-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-08-28IB/rxe: Disable completion upcalls when a CQ is destroyedAndrew Boyer1-0/+2
This prevents the stack from accessing userspace objects while they are being torn down. One possible sequence of events: - Userspace program exits - ib_uverbs_cleanup_ucontext() runs, calling ib_destroy_qp(), ib_destroy_cq(), etc. and releasing/freeing the UCQ - The QP still has tasklets running, so it isn't destroyed yet - The CQ is referenced by the QP, so the CQ isn't destroyed yet - The UCQ is kfree()'d anyway - A send work request completes - rxe_send_complete() calls cq->ibcq.comp_handler() - ib_uverbs_comp_handler() runs and crashes; the event queue is checked for is_closed, but it has no way to check the ib_ucq_object before accessing it The reference counting on the CQ doesn't protect against this since the CQ hasn't been destroyed yet. There's no available interface to deregister the UCQ from the CQ, and it didn't appear that attempting to add reference counting to the UCQ was going to be a good way to go since this solution is much simpler. Fixes: 8700e3e7c485 ("Soft RoCE driver") Signed-off-by: Andrew Boyer <andrew.boyer@dell.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-07-24IB/rxe: Prefer 'unsigned int' to bare use of 'unsigned'Kamal Heib1-1/+1
Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-05-01IB/core: Rename struct ib_ah_attr to rdma_ah_attrDasaratharaman Chandramouli1-4/+4
This patch simply renames struct ib_ah_attr to rdma_ah_attr as these fields specify attributes that are not necessarily specific to IB. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Don Hiatt <don.hiatt@intel.com> Reviewed-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> Reviewed-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-04-25{net,IB}/{rxe,usnic}: Utilize generic mac to eui32 functionYuval Shaia1-2/+0
This logic seems to be duplicated in (at least) three separate files. Move it to one place so code can be re-use. Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
2017-04-21IB/rxe: Add port protocol statsYonatan Cohen1-0/+2
Expose new counters using the get_hw_stats callback. We expose the following counters: +---------------------+----------------------------------------+ | Name | Description | |---------------------+----------------------------------------| |sent_pkts | number of sent pkts | |---------------------+----------------------------------------| |rcvd_pkts | number of received packets | |---------------------+----------------------------------------| |out_of_sequence | number of errors due to packet | | | transport sequence number | |---------------------+----------------------------------------| |duplicate_request | number of received duplicated packets. | | | A request that previously executed is | | | named duplicated. | |---------------------+----------------------------------------| |rcvd_rnr_err | number of received RNR by completer | |---------------------+----------------------------------------| |send_rnr_err | number of sent RNR by responder | |---------------------+----------------------------------------| |rcvd_seq_err | number of out of sequence packets | | | received | |---------------------+----------------------------------------| |ack_deffered | number of deferred handling of ack | | | packets. | |---------------------+----------------------------------------| |retry_exceeded_err | number of times retry exceeded | |---------------------+----------------------------------------| |completer_retry_err | number of times completer decided to | | | retry | |---------------------+----------------------------------------| |send_err | number of failed send packet | +---------------------+----------------------------------------+ Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com> Reviewed-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Andrew Boyer <andrew.boyer@dell.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-01-24IB/rxe, IB/rdmavt: Use dma_virt_ops instead of duplicating itBart Van Assche1-2/+0
Make the rxe and rdmavt drivers use dma_virt_ops. Update the comments that refer to the source files removed by this patch. Remove struct ib_dma_mapping_ops. Remove ib_device.dma_ops. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Andrew Boyer <andrew.boyer@dell.com> Cc: Dennis Dalessandro <dennis.dalessandro@intel.com> Cc: Jonathan Toppins <jtoppins@redhat.com> Cc: Alex Estrin <alex.estrin@intel.com> Cc: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-01-10IB/rxe: Remove a pointless indirection layerBart Van Assche1-2/+18
Neither rxe->ifc_ops nor any of the function pointers in struct struct rxe_ifc_ops ever change. Hence remove the rxe->ifc_ops indirection mechanism. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Andrew Boyer <andrew.boyer@dell.com> Cc: Moni Shoua <monis@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-01-10IB/rxe: Generate a completion for all failed work requestsBart Van Assche1-0/+1
Change do_complete() such that an error completion is not only generated if a QP is in the error state but also if a work request failed. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Andrew Boyer <andrew.boyer@dell.com> Cc: Moni Shoua <monis@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-01-10IB/rxe: Let the compiler check the type of the cleanup functionsBart Van Assche1-4/+4
Change the argument type of these functions from void * into struct rxe_pool_entry *. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Andrew Boyer <andrew.boyer@dell.com> Cc: Moni Shoua <monis@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-12-12IB/rxe: Unblock loopback by moving skb_out incrementAndrew Boyer1-2/+0
skb_out is decremented in rxe_skb_tx_dtor(), which is not called in the loopback() path. Move the increment to the send() path rather than rxe_xmit_packet(). Signed-off-by: Andrew Boyer <andrew.boyer@dell.com> Acked-by: Moni Shoua <monis@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-10-06IB/rxe: Properly honor max IRD value for rd/atomic.Parav Pandit1-1/+1
This patch honoris the max incoming read request count instead of outgoing read req count (a) during modify qp by allocating response queue metadata (b) during incoming read request processing Signed-off-by: Parav Pandit <pandit.parav@gmail.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-04Soft RoCE driverMoni Shoua1-0/+286
Soft RoCE (RXE) - The software RoCE driver ib_rxe implements the RDMA transport and registers to the RDMA core device as a kernel verbs provider. It also implements the packet IO layer. On the other hand ib_rxe registers to the Linux netdev stack as a udp encapsulating protocol, in that case RDMA, for sending and receiving packets over any Ethernet device. This yields a RDMA transport over the UDP/Ethernet network layer forming a RoCEv2 compatible device. The configuration procedure of the Soft RoCE drivers requires binding to any existing Ethernet network device. This is done with /sys interface. A userspace Soft RoCE library (librxe) provides user applications the ability to run with Soft RoCE devices. The use of rxe verbs ins user space requires the inclusion of librxe as a device specifics plug-in to libibverbs. librxe is packaged separately. Architecture: +-----------------------------------------------------------+ | Application | +-----------------------------------------------------------+ +-----------------------------------+ | libibverbs | User +-----------------------------------+ +----------------+ +----------------+ | librxe | | HW RoCE lib | +----------------+ +----------------+ +---------------------------------------------------------------+ +--------------+ +------------+ | Sockets | | RDMA ULP | +--------------+ +------------+ +--------------+ +---------------------+ | TCP/IP | | ib_core | +--------------+ +---------------------+ +------------+ +----------------+ Kernel | ib_rxe | | HW RoCE driver | +------------+ +----------------+ +------------------------------------+ | NIC driver | +------------------------------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +-----------------------------------------------------------+ | Application | +-----------------------------------------------------------+ +-----------------------------------+ | libibverbs | User +-----------------------------------+ +----------------+ +----------------+ | librxe | | HW RoCE lib | +----------------+ +----------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +--------------+ +------------+ | Sockets | | RDMA ULP | +--------------+ +------------+ +--------------+ +---------------------+ | TCP/IP | | ib_core | +--------------+ +---------------------+ +------------+ +----------------+ Kernel | ib_rxe | | HW RoCE driver | +------------+ +----------------+ +------------------------------------+ | NIC driver | +------------------------------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Soft RoCE resources: [1[ https://github.com/SoftRoCE/librxe-dev librxe - source code in Github [2] https://github.com/SoftRoCE/rxe-dev/wiki/rxe-dev:-Home - Soft RoCE Wiki page [3] https://github.com/SoftRoCE/librxe-dev - Soft RoCE userspace library Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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