- 27 11月, 2020 3 次提交
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由 Parav Pandit 提交于
To match the hardware spec, rename peer_pf to host_pf. Signed-off-by: NParav Pandit <parav@nvidia.com> Reviewed-by: NBodong Wang <bodong@nvidia.com> Signed-off-by: NSaeed Mahameed <saeedm@nvidia.com>
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由 Parav Pandit 提交于
Subsequent patch implements helper API which has mlx5_core_dev as const pointer, make its caller API too const *. Signed-off-by: NParav Pandit <parav@nvidia.com> Reviewed-by: NBodong Wang <bodong@nvidia.com> Signed-off-by: NSaeed Mahameed <saeedm@nvidia.com>
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由 Parav Pandit 提交于
mlx5 command init and cleanup routines are internal to mlx5_core driver. Hence, avoid exporting them and move their definition to mlx5_core driver's internal file mlx5_core.h Signed-off-by: NParav Pandit <parav@nvidia.com> Signed-off-by: NSaeed Mahameed <saeedm@nvidia.com>
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- 27 10月, 2020 1 次提交
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由 Parav Pandit 提交于
When a mlx5 core devlink instance is reloaded in different net namespace, its associated IB device is deleted and recreated. Example sequence is: $ ip netns add foo $ devlink dev reload pci/0000:00:08.0 netns foo $ ip netns del foo mlx5 IB device needs to attach and detach the netdevice to it through the netdev notifier chain during load and unload sequence. A below call graph of the unload flow. cleanup_net() down_read(&pernet_ops_rwsem); <- first sem acquired ops_pre_exit_list() pre_exit() devlink_pernet_pre_exit() devlink_reload() mlx5_devlink_reload_down() mlx5_unload_one() [...] mlx5_ib_remove() mlx5_ib_unbind_slave_port() mlx5_remove_netdev_notifier() unregister_netdevice_notifier() down_write(&pernet_ops_rwsem);<- recurrsive lock Hence, when net namespace is deleted, mlx5 reload results in deadlock. When deadlock occurs, devlink mutex is also held. This not only deadlocks the mlx5 device under reload, but all the processes which attempt to access unrelated devlink devices are deadlocked. Hence, fix this by mlx5 ib driver to register for per net netdev notifier instead of global one, which operats on the net namespace without holding the pernet_ops_rwsem. Fixes: 4383cfcc ("net/mlx5: Add devlink reload") Link: https://lore.kernel.org/r/20201026134359.23150-1-parav@nvidia.comSigned-off-by: NParav Pandit <parav@nvidia.com> Signed-off-by: NLeon Romanovsky <leonro@nvidia.com> Signed-off-by: NJason Gunthorpe <jgg@nvidia.com>
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- 10 10月, 2020 1 次提交
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由 Moshe Shemesh 提交于
Once the driver gets sync_reset_request from firmware it prepares for the coming reset and sends acknowledge. After getting this event the driver expects device reset, either it will trigger PCI reset on sync_reset_now event or such PCI reset will be triggered by another PF of the same device. So it moves to reset requested mode and if it gets PCI reset triggered by the other PF it detect the reset and reloads. Signed-off-by: NMoshe Shemesh <moshe@mellanox.com> Reviewed-by: NSaeed Mahameed <saeedm@nvidia.com> Signed-off-by: NJakub Kicinski <kuba@kernel.org>
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- 03 10月, 2020 2 次提交
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由 Saeed Mahameed 提交于
In case of pci is offline reclaim_pages_cmd() will still try to call the FW to release FW pages, cmd_exec() in this case will return a silent success without actually calling the FW. This is wrong and will cause page leaks, what we should do is to detect pci offline or command interface un-available before tying to access the FW and manually release the FW pages in the driver. In this patch we share the code to check for FW command interface availability and we call it in sensitive places e.g. reclaim_pages_cmd(). Alternative fix: 1. Remove MLX5_CMD_OP_MANAGE_PAGES form mlx5_internal_err_ret_value, command success simulation list. 2. Always Release FW pages even if cmd_exec fails in reclaim_pages_cmd(). Reviewed-by: NMoshe Shemesh <moshe@nvidia.com> Signed-off-by: NSaeed Mahameed <saeedm@nvidia.com>
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由 Eran Ben Elisha 提交于
Upon command completion timeout, driver simulates a forced command completion. In a rare case where real interrupt for that command arrives simultaneously, it might release the command entry while the forced handler might still access it. Fix that by adding an entry refcount, to track current amount of allowed handlers. Command entry to be released only when this refcount is decremented to zero. Command refcount is always initialized to one. For callback commands, command completion handler is the symmetric flow to decrement it. For non-callback commands, it is wait_func(). Before ringing the doorbell, increment the refcount for the real completion handler. Once the real completion handler is called, it will decrement it. For callback commands, once the delayed work is scheduled, increment the refcount. Upon callback command completion handler, we will try to cancel the timeout callback. In case of success, we need to decrement the callback refcount as it will never run. In addition, gather the entry index free and the entry free into a one flow for all command types release. Fixes: e126ba97 ("mlx5: Add driver for Mellanox Connect-IB adapters") Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com> Reviewed-by: NMoshe Shemesh <moshe@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@nvidia.com>
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- 16 9月, 2020 1 次提交
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由 Eran Ben Elisha 提交于
Clock struct is part of struct mlx5_core_dev. Code was inconsistent, on some cases used container_of and on another used clock->mdev. Align code to use container_of amd remove clock->mdev pointer. While here, fix reverse xmas tree coding style. Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com> Reviewed-by: NMoshe Shemesh <moshe@mellanox.com>
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- 28 7月, 2020 1 次提交
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由 Eran Ben Elisha 提交于
Per page request event, FW request to allocated or release pages for a single function. Driver maintains FW pages object per function, so there is no need to hold one global page data-base. Instead, have a page data-base per function, which will improve performance release flow in all cases, especially for "release all pages". As the range of function IDs is large and not sequential, use xarray to store a per function ID page data-base, where the function ID is the key. Upon first allocation of a page to a function ID, create the page data-base per function. This data-base will be released only at pagealloc mechanism cleanup. NIC: ConnectX-4 Lx CPU: Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz Test case: 32 VFs, measure release pages on one VF as part of FLR Before: 0.021 Sec After: 0.014 Sec The improvement depends on amount of VFs and memory utilization by them. Time measurements above were taken from idle system. Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com> Reviewed-by: NMark Bloch <markb@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 17 7月, 2020 1 次提交
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由 Raed Salem 提交于
This to set the base for downstream patches to support the new IPsec implementation of the Connect-X family. Following modifications made: - Remove accel layer dependency from MLX5_FPGA_IPSEC. - Introduce accel_ipsec_ops, each IPsec device will have to support these ops. Signed-off-by: NRaed Salem <raeds@mellanox.com> Reviewed-by: NTariq Toukan <tariqt@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 16 7月, 2020 2 次提交
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由 Eli Cohen 提交于
VDPA is a new interface that will be added in subsequent patches. It uses mlx5 core devices and resources. Add an interface type for it. Signed-off-by: NEli Cohen <eli@mellanox.com> Reviewed-by: NParav Pandit <parav@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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由 Eli Cohen 提交于
mlx5_fill_page_frag_array() is used to populate dma addresses to resources that require it, such as QPs, RQs etc. When the resource is used, PA list permissions are ignored. For resources that use MTT list, the user is required to provide the access rights. Subsequent patches use resources that require MTT lists, so modify API and implementation to support that. Signed-off-by: NEli Cohen <eli@mellanox.com> Reviewed-by: NParav Pandit <parav@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 10 7月, 2020 1 次提交
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由 Eran Ben Elisha 提交于
Device unit for port buffers size, xoff_threshold and xon_threshold is cells. Fix a bug in driver where cell unit size was hard-coded to 128 bytes. This hard-coded value is buggy, as it is wrong for some hardware versions. Driver to read cell size from SBCAM register and translate bytes to cell units accordingly. In order to fix the bug, this patch exposes SBCAM (Shared buffer capabilities mask) layout and defines. If SBCAM.cap_cell_size is valid, use it for all bytes to cells calculations. If not valid, fallback to 128. Cell size do not change on the fly per device. Instead of issuing SBCAM access reg command every time such translation is needed, cache it in mlx5e_dcbx as part of mlx5e_dcbnl_initialize(). Pass dcbx.port_buff_cell_sz as a param to every function that needs bytes to cells translation. While fixing the bug, move MLX5E_BUFFER_CELL_SHIFT macro to en_dcbnl.c, as it is only used by that file. Fixes: 0696d608 ("net/mlx5e: Receive buffer configuration") Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com> Reviewed-by: NHuy Nguyen <huyn@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 30 5月, 2020 1 次提交
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由 Saeed Mahameed 提交于
Fix sparse warning: drivers/net/ethernet/mellanox/mlx5/core/cmd.c:1949:15: warning: memset with byte count of 271720 mlx5_cmd_stats array is too big to be held inline in mlx5_cmd. Allocate it separately. Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 23 5月, 2020 3 次提交
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由 Eran Ben Elisha 提交于
When driver is reloading during recovery flow, it can't get new commands till command interface is up again. Otherwise we may get to null pointer trying to access non initialized command structures. Add cmdif state to avoid processing commands while cmdif is not ready. Fixes: e126ba97 ("mlx5: Add driver for Mellanox Connect-IB adapters") Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com> Signed-off-by: NMoshe Shemesh <moshe@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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由 Eran Ben Elisha 提交于
After driver creates (via FW command) an EQ for commands, the driver will be informed on new commands completion by EQE. However, due to a race in driver's internal command mode metadata update, some new commands will still be miss-handled by driver as if we are in polling mode. Such commands can get two non forced completion, leading to already freed command entry access. CREATE_EQ command, that maps EQ to the command queue must be posted to the command queue while it is empty and no other command should be posted. Add SW mechanism that once the CREATE_EQ command is about to be executed, all other commands will return error without being sent to the FW. Allow sending other commands only after successfully changing the driver's internal command mode metadata. We can safely return error to all other commands while creating the command EQ, as all other commands might be sent from the user/application during driver load. Application can rerun them later after driver's load was finished. Fixes: e126ba97 ("mlx5: Add driver for Mellanox Connect-IB adapters") Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com> Signed-off-by: NMoshe Shemesh <moshe@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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由 Moshe Shemesh 提交于
When FW response to commands is very slow and all command entries in use are waiting for completion we can have a race where commands can get timeout before they get out of the queue and handled. Timeout completion on uninitialized command will cause releasing command's buffers before accessing it for initialization and then we will get NULL pointer exception while trying access it. It may also cause releasing buffers of another command since we may have timeout completion before even allocating entry index for this command. Add entry handling completion to avoid this race. Fixes: e126ba97 ("mlx5: Add driver for Mellanox Connect-IB adapters") Signed-off-by: NMoshe Shemesh <moshe@mellanox.com> Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 19 5月, 2020 1 次提交
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由 Parav Pandit 提交于
Only mlx5_core driver handles fw initialization check and command interface revision check. Hence move them inside the mlx5_core driver where it is used. This avoid exposing these helpers to all mlx5 drivers. Signed-off-by: NParav Pandit <parav@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 11 5月, 2020 1 次提交
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由 Gustavo A. R. Silva 提交于
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] sizeof(flexible-array-member) triggers a warning because flexible array members have incomplete type[1]. There are some instances of code in which the sizeof operator is being incorrectly/erroneously applied to zero-length arrays and the result is zero. Such instances may be hiding some bugs. So, this work (flexible-array member conversions) will also help to get completely rid of those sorts of issues. This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: NGustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 02 5月, 2020 1 次提交
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由 Maor Gottlieb 提交于
Add function to get the device physical port of the lag slave. Signed-off-by: NMaor Gottlieb <maorg@mellanox.com> Reviewed-by: NLeon Romanovsky <leonro@mellanox.com> Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 29 4月, 2020 2 次提交
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由 Moshe Shemesh 提交于
Add needed structure layouts and defines for MFRL (Management Firmware Reset Level) register. This structure will be used for the firmware upgrade and reset flow in the downstream patches. Signed-off-by: NMoshe Shemesh <moshe@mellanox.com> Reviewed-by: NTariq Toukan <tariqt@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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由 Erez Shitrit 提交于
The alignment value is part of the input structure, so use it and spare extra memory allocation when is not needed. Now, using the new ability when allocating icm for Direct-Rule insertion. Signed-off-by: NAriel Levkovich <lariel@mellanox.com> Signed-off-by: NErez Shitrit <erezsh@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 19 4月, 2020 2 次提交
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由 Leon Romanovsky 提交于
The mlx5_core doesn't need any functionality coded in qp.c, so move that file to drivers/infiniband/ be under mlx5_ib responsibility. Reviewed-by: NSaeed Mahameed <saeedm@mellanox.com> Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
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由 Leon Romanovsky 提交于
Many mlx5_cmd_exec() callers are not interested in the output from that command or have standard in/out structures. Those callers simply allocate those structure on the stack and use sizeof() to provide in/out arguments. In this naive approach provide simplified versions of mlx5_cmd_exec(). Reviewed-by: NSaeed Mahameed <saeedm@mellanox.com> Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
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- 27 3月, 2020 1 次提交
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由 Leon Romanovsky 提交于
struct mlx5_bfreg_info is used by mlx5_ib only but is exposed to both RDMA and netdev parts of mlx5 driver. Move that struct to mlx5_ib namespace, clean vertical space alignment and convert lib_uar_4k from bool to bitfield. Link: https://lore.kernel.org/r/20200324060143.1569116-5-leon@kernel.orgSigned-off-by: NLeon Romanovsky <leonro@mellanox.com> Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>
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- 13 3月, 2020 2 次提交
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由 Michael Guralnik 提交于
As mlx5_ib is the only user of the mlx5_core_create_mkey_cb, move the logic inside mlx5_ib and cleanup the code in mlx5_core. Signed-off-by: NMichael Guralnik <michaelgur@mellanox.com> Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
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由 Saeed Mahameed 提交于
mkey variant is not required for mlx5_core use, move the mkey variant counter to mlx5_ib. Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com> Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
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- 05 3月, 2020 1 次提交
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由 Yishai Hadas 提交于
Expose raw packet pacing APIs to be used by DEVX based applications. The existing code was refactored to have a single flow with the new raw APIs. The new raw APIs considered the input of 'pp_rate_limit_context', uid, 'dedicated', upon looking for an existing entry. This raw mode enables future device specification data in the raw context without changing the existing logic and code. The ability to ask for a dedicated entry gives control for application to allocate entries according to its needs. A dedicated entry may not be used by some other process and it also enables the process spreading its resources to some different entries for use different hardware resources as part of enforcing the rate. The counter per entry was changed to be u64 to prevent any option to overflow. Signed-off-by: NYishai Hadas <yishaih@mellanox.com> Acked-by: NSaeed Mahameed <saeedm@mellanox.com> Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
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- 19 2月, 2020 1 次提交
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由 Aya Levin 提交于
On driver load: - Initialize resource dump data structure and memory access tools (mkey & pd). - Read the resource dump's menu which contains the FW segment identifier. Each record is identified by the segment name (ASCII). During the driver's course of life, users (like reporters) may request dumps per segment. The user should create a command providing the segment identifier (SW enumeration) and command keys. In return, the user receives a command context. In order to receive the dump, the user should supply the command context and a memory (aligned to a PAGE) on which the dump content will be written. Since the dump may be larger than the given memory, the user may resubmit the command until received an indication of end-of-dump. It is the user's responsibility to destroy the command. Signed-off-by: NAya Levin <ayal@mellanox.com> Reviewed-by: NMoshe Shemesh <moshe@mellanox.com> Acked-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 26 1月, 2020 1 次提交
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由 Danit Goldberg 提交于
A user can change the operational GUID (a.k.a affective GUID) through link/infiniband. Therefore it is preferred to return the currently set GUID if it exists instead of the operational. This way the PF can query which VF GUID will be set in the next bind. In order to align with MAC address, zero is returned if administrative GUID is not set. For example, before setting administrative GUID: $ ip link show ib0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 4092 qdisc mq state UP mode DEFAULT group default qlen 256 link/infiniband 00:00:00:08:fe:80:00:00:00:00:00:00:52:54:00:c0:fe:12:34:55 brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff vf 0 link/infiniband 00:00:00:08:fe:80:00:00:00:00:00:00:52:54:00:c0:fe:12:34:55 brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff, spoof checking off, NODE_GUID 00:00:00:00:00:00:00:00, PORT_GUID 00:00:00:00:00:00:00:00, link-state auto, trust off, query_rss off Then: $ ip link set ib0 vf 0 node_guid 11:00:af:21:cb:05:11:00 $ ip link set ib0 vf 0 port_guid 22:11:af:21:cb:05:11:00 After setting administrative GUID: $ ip link show ib0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 4092 qdisc mq state UP mode DEFAULT group default qlen 256 link/infiniband 00:00:00:08:fe:80:00:00:00:00:00:00:52:54:00:c0:fe:12:34:55 brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff vf 0 link/infiniband 00:00:00:08:fe:80:00:00:00:00:00:00:52:54:00:c0:fe:12:34:55 brd 00:ff:ff:ff:ff:12:40:1b:ff:ff:00:00:00:00:00:00:ff:ff:ff:ff, spoof checking off, NODE_GUID 11:00:af:21:cb:05:11:00, PORT_GUID 22:11:af:21:cb:05:11:00, link-state auto, trust off, query_rss off Fixes: 9c0015ef ("IB/mlx5: Implement callbacks for getting VFs GUID attributes") Link: https://lore.kernel.org/r/20200116120048.12744-1-leon@kernel.orgSigned-off-by: NDanit Goldberg <danitg@mellanox.com> Signed-off-by: NLeon Romanovsky <leonro@mellanox.com> Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>
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- 17 1月, 2020 3 次提交
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由 Aya Levin 提交于
Add new register enumeration for resource dump. Add layout mapping for resource dump: access command and response. Signed-off-by: NAya Levin <ayal@mellanox.com> Reviewed-by: NMoshe Shemesh <moshe@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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由 Eran Ben Elisha 提交于
Add needed structures, layouts and defines for MIRC (Management Image Re-activation Control) register. This structure will be used for the FSM reactivation flow in the downstream patches. Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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由 Eran Ben Elisha 提交于
On load, Driver caches MCAM (Management Capabilities Mask Register) registers. in addition to the only MCAM register group (0) the driver already reads, here we add support for reading groups 1 and 2. Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 08 1月, 2020 1 次提交
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由 Zhu Yanjun 提交于
The function mlx5_buf_alloc_node is only used by the function in the local scope. So it is appropriate to limit this function in the local scope. Signed-off-by: NZhu Yanjun <zyjzyj2000@gmail.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 12 11月, 2019 1 次提交
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由 Michael Guralnik 提交于
Register "enable_roce" param, default value is RoCE enabled. Current configuration is stored on mlx5_core_dev and exposed to user through the cmode runtime devlink param. Changing configuration requires changing the cmode driverinit devlink param and calling devlink reload. Signed-off-by: NMichael Guralnik <michaelgur@mellanox.com> Acked-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 02 11月, 2019 1 次提交
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由 Parav Pandit 提交于
Instead of deciding a given device is virtual function or not based on a device is PF or not, use already defined MLX5_COREDEV_VF by introducing an helper API mlx5_core_is_vf(). This enables to clearly identify PF, VF and non virtual functions. Signed-off-by: NParav Pandit <parav@mellanox.com> Reviewed-by: NVu Pham <vuhuong@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 29 10月, 2019 1 次提交
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由 Jason Gunthorpe 提交于
No users are left, delete it. Link: https://lore.kernel.org/r/20191009160934.3143-5-jgg@ziepe.caReviewed-by: NArtemy Kovalyov <artemyko@mellanox.com> Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>
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- 02 9月, 2019 1 次提交
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由 Ariel Levkovich 提交于
Move the device memory allocation and deallocation commands SW ICM memory to mlx5_core to expose this API for all mlx5_core users. This comes as preparation for supporting SW steering in kernel where it will be required to allocate and register device memory for direct rule insertion. In addition, an API to register this device memory for future remote access operations is introduced using the create_mkey commands. Signed-off-by: NAriel Levkovich <lariel@mellanox.com> Reviewed-by: NMark Bloch <markb@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
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- 22 8月, 2019 1 次提交
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由 Eran Ben Elisha 提交于
HV VHCA is a layer which provides PF to VF communication channel based on HyperV PCI config channel. It implements Mellanox's Inter VHCA control communication protocol. The protocol contains control block in order to pass messages between the PF and VF drivers, and data blocks in order to pass actual data. The infrastructure is agent based. Each agent will be responsible of contiguous buffer blocks in the VHCA config space. This infrastructure will bind agents to their blocks, and those agents can only access read/write the buffer blocks assigned to them. Each agent will provide three callbacks (control, invalidate, cleanup). Control will be invoked when block-0 is invalidated with a command that concerns this agent. Invalidate callback will be invoked if one of the blocks assigned to this agent was invalidated. Cleanup will be invoked before the agent is being freed in order to clean all of its open resources or deferred works. Block-0 serves as the control block. All execution commands from the PF will be written by the PF over this block. VF will ack on those by writing on block-0 as well. Its format is described by struct mlx5_hv_vhca_control_block layout. Signed-off-by: NEran Ben Elisha <eranbe@mellanox.com> Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com> Signed-off-by: NHaiyang Zhang <haiyangz@microsoft.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 8月, 2019 1 次提交
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由 Greg Kroah-Hartman 提交于
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. This cleans up a lot of unneeded code and logic around the debugfs files, making all of this much simpler and easier to understand as we don't need to keep the dentries saved anymore. Cc: Saeed Mahameed <saeedm@mellanox.com> Cc: Leon Romanovsky <leon@kernel.org> Cc: netdev@vger.kernel.org Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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