- 21 Apr, 2017 9 commits
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Parav Pandit authored
This patch fixes the kernel crash that occurs during ib_dealloc_device() called due to provider driver fails with an error after ib_alloc_device() and before it can register using ib_register_device(). This crashed seen in tha lab as below which can occur with any IB device which fails to perform its device initialization before invoking ib_register_device(). This patch avoids touching cache and port immutable structures if device is not yet initialized. It also releases related memory when cache and port immutable data structure initialization fails during register_device() state. [81416.561946] BUG: unable to handle kernel NULL pointer dereference at (null) [81416.570340] IP: ib_cache_release_one+0x29/0x80 [ib_core] [81416.576222] PGD 78da66067 [81416.576223] PUD 7f2d7c067 [81416.579484] PMD 0 [81416.582720] [81416.587242] Oops: 0000 [#1] SMP [81416.722395] task: ffff8807887515c0 task.stack: ffffc900062c0000 [81416.729148] RIP: 0010:ib_cache_release_one+0x29/0x80 [ib_core] [81416.735793] RSP: 0018:ffffc900062c3a90 EFLAGS: 00010202 [81416.741823] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [81416.749785] RDX: 0000000000000000 RSI: 0000000000000282 RDI: ffff880859fec000 [81416.757757] RBP: ffffc900062c3aa0 R08: ffff8808536e5ac0 R09: ffff880859fec5b0 [81416.765708] R10: 00000000536e5c01 R11: ffff8808536e5ac0 R12: ffff880859fec000 [81416.773672] R13: 0000000000000000 R14: ffff8808536e5ac0 R15: ffff88084ebc0060 [81416.781621] FS: 00007fd879fab740(0000) GS:ffff88085fac0000(0000) knlGS:0000000000000000 [81416.790522] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [81416.797094] CR2: 0000000000000000 CR3: 00000007eb215000 CR4: 00000000003406e0 [81416.805051] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [81416.812997] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [81416.820950] Call Trace: [81416.824226] ib_device_release+0x1e/0x40 [ib_core] [81416.829858] device_release+0x32/0xa0 [81416.834370] kobject_cleanup+0x63/0x170 [81416.839058] kobject_put+0x25/0x50 [81416.843319] ib_dealloc_device+0x25/0x40 [ib_core] [81416.848986] mlx5_ib_add+0x163/0x1990 [mlx5_ib] [81416.854414] mlx5_add_device+0x5a/0x160 [mlx5_core] [81416.860191] mlx5_register_interface+0x8d/0xc0 [mlx5_core] [81416.866587] ? 0xffffffffa09e9000 [81416.870816] mlx5_ib_init+0x15/0x17 [mlx5_ib] [81416.876094] do_one_initcall+0x51/0x1b0 [81416.880861] ? __vunmap+0x85/0xd0 [81416.885113] ? kmem_cache_alloc_trace+0x14b/0x1b0 [81416.890768] ? vfree+0x2e/0x70 [81416.894762] do_init_module+0x60/0x1fa [81416.899441] load_module+0x15f6/0x1af0 [81416.904114] ? __symbol_put+0x60/0x60 [81416.908709] ? ima_post_read_file+0x3d/0x80 [81416.913828] ? security_kernel_post_read_file+0x6b/0x80 [81416.920006] SYSC_finit_module+0xa6/0xf0 [81416.924888] SyS_finit_module+0xe/0x10 [81416.929568] entry_SYSCALL_64_fastpath+0x1a/0xa9 [81416.935089] RIP: 0033:0x7fd879494949 [81416.939543] RSP: 002b:00007ffdbc1b4e58 EFLAGS: 00000202 ORIG_RAX: 0000000000000139 [81416.947982] RAX: ffffffffffffffda RBX: 0000000001b66f00 RCX: 00007fd879494949 [81416.955965] RDX: 0000000000000000 RSI: 000000000041a13c RDI: 0000000000000003 [81416.963926] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000001b652a0 [81416.971861] R10: 0000000000000003 R11: 0000000000000202 R12: 00007ffdbc1b3e70 [81416.979763] R13: 00007ffdbc1b3e50 R14: 0000000000000005 R15: 0000000000000000 [81417.008005] RIP: ib_cache_release_one+0x29/0x80 [ib_core] RSP: ffffc900062c3a90 [81417.016045] CR2: 0000000000000000 Fixes: 55aeed06 ("IB/core: Make ib_alloc_device init the kobject") Fixes: 7738613e ("IB/core: Add per port immutable struct to ib_device") Cc: <stable@vger.kernel.org> # v4.2+ Reviewed-by:
Daniel Jurgens <danielj@mellanox.com> Signed-off-by:
Parav Pandit <parav@mellanox.com> Signed-off-by:
Leon Romanovsky <leon@kernel.org> Signed-off-by:
Doug Ledford <dledford@redhat.com>
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Feras Daoud authored
Before calling ipoib_stop, rtnl_lock should be taken, then the flow clears the IPOIB_FLAG_ADMIN_UP and IPOIB_FLAG_OPER_UP flags, and waits for mcast completion if IPOIB_MCAST_FLAG_BUSY is set. On the other hand, the flow of multicast join task initializes a mcast completion, sets the IPOIB_MCAST_FLAG_BUSY and calls ipoib_mcast_join. If IPOIB_FLAG_OPER_UP flag is not set, this call returns EINVAL without setting the mcast completion and leads to a deadlock. ipoib_stop | | | clear_bit(IPOIB_FLAG_ADMIN_UP) | | | Context Switch | | ipoib_mcast_join_task | | | spin_lock_irq(lock) | | | init_completion(mcast) | | | set_bit(IPOIB_MCAST_FLAG_BUSY) | | | Context Switch | | clear_bit(IPOIB_FLAG_OPER_UP) | | | spin_lock_irqsave(lock) | | | Context Switch | | ipoib_mcast_join | return (-EINVAL) | | | spin_unlock_irq(lock) | | | Context Switch | | ipoib_mcast_dev_flush | wait_for_completion(mcast) | ipoib_stop will wait for mcast completion for ever, and will not release the rtnl_lock. As a result panic occurs with the following trace: [13441.639268] Call Trace: [13441.640150] [<ffffffff8168b579>] schedule+0x29/0x70 [13441.641038] [<ffffffff81688fc9>] schedule_timeout+0x239/0x2d0 [13441.641914] [<ffffffff810bc017>] ? complete+0x47/0x50 [13441.642765] [<ffffffff810a690d>] ? flush_workqueue_prep_pwqs+0x16d/0x200 [13441.643580] [<ffffffff8168b956>] wait_for_completion+0x116/0x170 [13441.644434] [<ffffffff810c4ec0>] ? wake_up_state+0x20/0x20 [13441.645293] [<ffffffffa05af170>] ipoib_mcast_dev_flush+0x150/0x190 [ib_ipoib] [13441.646159] [<ffffffffa05ac967>] ipoib_ib_dev_down+0x37/0x60 [ib_ipoib] [13441.647013] [<ffffffffa05a4805>] ipoib_stop+0x75/0x150 [ib_ipoib] Fixes: 08bc3276 ("IB/ipoib: fix for rare multicast join race condition") Signed-off-by:Feras Daoud <ferasda@mellanox.com> Signed-off-by:
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Feras Daoud authored
Update the broadcast address in the priv->broadcast object when the Pkey value changes in index 0, otherwise the multicast GID value will keep the previous value of the PKey, and will not be updated. This leads to interface state down because the interface will keep the old PKey value. For example, in SR-IOV environment, if the PF changes the value of PKey index 0 for one of the VFs, then the VF receives PKey change event that triggers heavy flush. This flush calls update_parent_pkey that update the broadcast object and its relevant members. If in this case the multicast GID will not be updated, the interface state will be down. Fixes: c2904141 ("IPoIB: Fix pkey change flow for virtualization environments") Signed-off-by:
Erez Shitrit <erezsh@mellanox.com> Reviewed-by:
Alex Vesker <valex@mellanox.com> Signed-off-by:
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yonatanc authored
In RC QP there is no need to resolve the outgoing interface for each packet, as this does not change during QP life cycle. Instead cache the interface on the socket and use that one. This improves performance by 12% by sparing redundant calls to rxe_find_route. ib_send_bw -d rxe0 -x 1 -n 9000 -e -s $((1024 * 1024 )) -l 100 ---------------------------------------------------------------------------------------- | | bytes | iterations | BW peak[MB/sec] | BW average[MB/sec] | MsgRate[Mpps] | ---------------------------------------------------------------------------------------- | before | 1048576 | 9000 | inf | 551.21 | 0.000551 | | after | 1048576 | 9000 | inf | 615.54 | 0.000616 | ---------------------------------------------------------------------------------------- Fixes: 8700e3e7 ("Soft RoCE driver") Signed-off-by:
Yonatan Cohen <yonatanc@mellanox.com> Signed-off-by:
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yonatanc authored
Use CPU ability to perform CRC calculations, by replacing direct calls to crc32_le() with crypto_shash_updata(). The overall performance gain measured with ib_send_bw tool is 10% and it was tested on "Intel CPU ES-2660 v2 @ 2.20Ghz" CPU. ib_send_bw -d rxe0 -x 1 -n 9000 -e -s $((1024 * 1024 )) -l 100 --------------------------------------------------------------------------------------------- | | bytes | iterations | BW peak[MB/sec] | BW average[MB/sec] | MsgRate[Mpps] | --------------------------------------------------------------------------------------------- | crc32_le | 1048576 | 9000 | inf | 497.60 | 0.000498 | | CRC offload | 1048576 | 9000 | inf | 546.70 | 0.000547 | --------------------------------------------------------------------------------------------- Fixes: 8700e3e7 ("Soft RoCE driver") Signed-off-by:
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Parav Pandit authored
Function rxe_rcv is used internally in RXE and don't need to be exported. This patch removes such export declaration. Signed-off-by:
Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by:
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Parav Pandit authored
This patch avoids RNR NAK timer and retransmit timer initialization and cleanup for non RC QPs (such as UD QP, GSI QP). Reviewed-by:
Moni Shoua <monis@mellanox.com> Signed-off-by:
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Yonatan Cohen authored
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:
Andrew Boyer <andrew.boyer@dell.com> Signed-off-by:
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Doug Ledford authored
A couple spots were missed in the original patch to implement this change. Add those spots. Fixes: a9a42886 (cxgb4: Convert PDBG to pr_debug) Signed-off-by:
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- 20 Apr, 2017 31 commits
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Markus Elfring authored
* Multiplications for the size determination of memory allocations indicated that array data structures should be processed. Thus use the corresponding function "kcalloc". This issue was detected by using the Coccinelle software. * Replace the specification of data types by pointer dereferences to make the corresponding size determinations a bit safer according to the Linux coding style convention. Signed-off-by:
Markus Elfring <elfring@users.sourceforge.net> Signed-off-by:
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Markus Elfring authored
* A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "kmalloc_array". This issue was detected by using the Coccinelle software. * Replace the specification of a data structure by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by:
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Markus Elfring authored
Replace the specification of a data structure by a reference to the desired member as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by:
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Markus Elfring authored
* Pass a product for a call of the function "vmalloc_user" without storing it in an intermediate variable. * Delete the local variable "memsize" which became unnecessary with this refactoring. Signed-off-by:
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Markus Elfring authored
* Multiplications for the size determination of memory allocations indicated that array data structures should be processed. Thus reuse the corresponding function "kcalloc". This issue was detected by using the Coccinelle software. * Replace the specification of a data type by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by:
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Markus Elfring authored
* A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus reuse the corresponding function "kcalloc". This issue was detected by using the Coccinelle software. * Replace the specification of a data type by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by:
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Joe Perches authored
Use a more typical logging style. Miscellanea: o Obsolete the c4iw_debug module parameter o Coalesce formats o Realign arguments Signed-off-by:
Joe Perches <joe@perches.com> Reviewed-by:
Steve Wise <swise@opengridcomputing.com> Signed-off-by:
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Joe Perches authored
Convert printks to pr_<level> Miscellanea: o Coalesce formats o Realign arguments Signed-off-by:
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Joe Perches authored
Using the normal mechanism, not an indirected one, is clearer. Miscellanea: o Coalesce formats o Realign arguments Signed-off-by:
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Joe Perches authored
Convert printks to pr_<level> Miscellanea: o Coalesce formats o Realign arguments Signed-off-by:
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Erez Shitrit authored
IPoIB driver now uses the new set of callback functions. If the hardware provider supports the new ipoib_options implementation, the driver uses the callbacks in its data path flows, otherwise it uses the driver default implementation for all data flows in its code. The default implementation wasn't change and it is exactly as it was before introduction of acceleration support. Signed-off-by:
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Erez Shitrit authored
Make ipoib_priv point to netdev_priv where the code calls netdev_priv. Signed-off-by:
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Erez Shitrit authored
Change of function parameter name from qpn to be dqpn. Signed-off-by:
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Erez Shitrit authored
This patch is preparing the netdev part at the IPoIB driver to be able to use the ipoib_options. It deals with the two flows from the .ndo: ipoib_open and ipoib_stop. The code is rearranged as follows: * All operations which deal with the hardware resources, (for example change QP state, post-receive etc.) are performed in one place. * All operations that are control oriented (like restart multicast task, start the reap_ah etc.) are performed in separate place. The functions that deal with the hardware resources now located at __ipoib_ib_dev_open for the ipoib_open flow and __ipoib_ib_dev_stop for ipoib_stop. Signed-off-by:
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Erez Shitrit authored
This patch prepares init and teardown flows so we can call them through ipoib_options function pointers. It arranges that area of code as the following: * All operations which deal with the resource allocation/deletion are performed in one place. * All operations that are control oriented, meaning that they are not connected to a specific hardware, are performed in a separate place. The operations for allocation of hardware resources are now in the function ipoib_dev_init_default, and the deletion of all the resources are in ipoib_dev_uninit_default The only exception is the creation of the PD object, which is used both for resource allocation (create QP etc.) and for control flows like creating AH. It also does: * Move creation of rx_ring and tx_ring to be in the resources allocation area. * Move the function ipoib_ib_dev_open that does the open device to the control area instead of the dev_init which creates resources. Signed-off-by:
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Niranjana Vishwanathapura authored
Add RDMA netdev interface to ib device structure allowing RDMA netdev devices to be allocated by ib clients. The idea is to allow to providers to optimize IPoIB data path. New struct that includes functions and data member is exposed. It exposes set of callback functions for handling data path flows in IPoIB driver. Each provider can support these set of functions in order to optimize its specific data path, and let IPoIB to leverage its data path. There is an assumption, that providers should give the full set of functions and not only part of them, in order to work properly. Signed-off-by:
Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> Signed-off-by:
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Vishwanathapura, Niranjana authored
HFI1 VNIC SDMA support enables transmission of VNIC packets over SDMA. Map VNIC queues to SDMA engines and support halting and wakeup of the VNIC queues. Reviewed-by:
Dennis Dalessandro <dennis.dalessandro@intel.com> Reviewed-by:
Ira Weiny <ira.weiny@intel.com> Signed-off-by:
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Vishwanathapura, Niranjana authored
HFI1 HW specific support for VNIC functionality. Dynamically allocate a set of contexts for VNIC when the first vnic port is instantiated. Allocate VNIC contexts from user contexts pool and return them back to the same pool while freeing up. Set aside enough MSI-X interrupts for VNIC contexts and assign them when the contexts are allocated. On the receive side, use an RSM rule to spread TCP/UDP streams among VNIC contexts. Reviewed-by:
Andrzej Kacprowski <andrzej.kacprowski@intel.com> Signed-off-by:
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Vishwanathapura, Niranjana authored
Add support to create and free OPA_VNIC rdma netdev devices. Implement netstack interface functionality including xmit_skb, receive side NAPI etc. Also implement rdma netdev control functions. Reviewed-by:
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Vishwanathapura, Niranjana authored
OPA VEMA function interfaces with the Infiniband MAD stack to exchange the management information packets with the Ethernet Manager (EM). It interfaces with the OPA VNIC netdev function to SET/GET the management information. The information exchanged with the EM includes class port details, encapsulation configuration, various counters, unicast and multicast MAC list and the MAC table. It also supports sending traps to the EM. Reviewed-by:
Sadanand Warrier <sadanand.warrier@intel.com> Signed-off-by:
Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by:
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Vishwanathapura, Niranjana authored
OPA VNIC EMA interface functions are the management interfaces to the OPA VNIC netdev. Add support to add and remove VNIC ports. Implement the required GET/SET management interface functions and processing of new management information. Add support to send trap notifications upon various events like interface status change, unicast/multicast mac list update and mac address change. Reviewed-by:
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Vishwanathapura, Niranjana authored
OPA VNIC MAC table contains the MAC address to DLID mappings provided by the Ethernet manager. During transmission, the MAC table provides the MAC address to DLID translation. Implement MAC table using simple hash list. Also provide support to update/query the MAC table by Ethernet manager. Reviewed-by:
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Vishwanathapura, Niranjana authored
OPA VNIC driver statistics support maintains various counters including standard netdev counters and the Ethernet manager defined counters. Add the Ethtool hook to read the counters. Reviewed-by:
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Vishwanathapura, Niranjana authored
Define VNIC EM MAD structures and the associated macros. These structures are used for information exchange between VNIC EM agent (EMA) on the host and the Ethernet manager. These include the virtual ethernet switch (vesw) port information, vesw port mac table, summay and error counters, vesw port interface mac lists and the EMA trap. Reviewed-by:
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Vishwanathapura, Niranjana authored
OPA VNIC netdev function supports Ethernet functionality over Omni-Path fabric by encapsulating Ethernet packets inside Omni-Path packet header. It allocates a rdma netdev device and interfaces with the network stack to provide standard Ethernet network interfaces. It overrides HFI1 device's netdev operations where it is required. Reviewed-by:
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Vishwanathapura, Niranjana authored
Define OPA VNIC interface between hardware independent VNIC functionality and the hardware dependent VNIC functionality. Reviewed-by:
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Vishwanathapura, Niranjana authored
Add rdma netdev interface to ib device structure allowing rdma netdev devices to be allocated by ib clients. Reviewed-by:
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Vishwanathapura, Niranjana authored
Add OPA VNIC design document explaining the VNIC architecture and the driver design. Reviewed-by:
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Doug Ledford authored
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Matan Barak authored
Previously, ib_uverbs_event_file was suffixed by _file as it contained the actual file information. Since it's now only used as base struct for ib_uverbs_async_event_file and ib_uverbs_completion_event_file, we change its name to ib_uverbs_event_queue. This represents its logical role better. Fixes: 1e7710f3 ('IB/core: Change completion channel to use the reworked objects schema') Signed-off-by:
Matan Barak <matanb@mellanox.com> Reviewed-by:
Sean Hefty <sean.hefty@intel.com> Signed-off-by:
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Matan Barak authored
Previously, we inferred the events size in ib_uverbs_event_read by using the is_async flag. Instead of that, we pass the event size directly. Fixes: 1e7710f3 ('IB/core: Change completion channel to use the reworked objects schema') Signed-off-by:
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