cf9b3c36e5
This commit introduce the RegEx poll mode drivers class, and adds Mellanox RegEx PMD. Signed-off-by: Yuval Avnery <yuvalav@mellanox.com> Signed-off-by: Ori Kam <orika@mellanox.com>
54 lines
1.6 KiB
ReStructuredText
54 lines
1.6 KiB
ReStructuredText
.. SPDX-License-Identifier: BSD-3-Clause
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Copyright 2020 Mellanox Technologies, Ltd
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.. include:: <isonum.txt>
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MLX5 RegEx driver
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=================
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The MLX5 RegEx (Regular Expression) driver library
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(**librte_pmd_mlx5_regex**) provides support for **Mellanox BlueField 2**
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families of 25/50/100/200 Gb/s adapters.
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Design
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------
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This PMD is configuring the RegEx HW engine.
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For the PMD to work, the application must supply
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a precompiled rule file in rof2 format.
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The PMD uses libibverbs and libmlx5 to access the device firmware
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or directly the hardware components.
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There are different levels of objects and bypassing abilities
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to get the best performances:
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- Verbs is a complete high-level generic API
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- Direct Verbs is a device-specific API
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- DevX allows to access firmware objects
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Enabling librte_pmd_mlx5_regex causes DPDK applications to be linked against
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libibverbs.
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Mellanox mlx5 pci device can be probed by number of different pci devices,
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for example net / vDPA / RegEx. To select the RegEx PMD ``class=regex`` should
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be specified as device parameter. The RegEx device can be probed and used with
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other Mellanox devices, by adding more options in the class.
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For example: ``class=net:regex`` will probe both the net PMD and the RegEx PMD.
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Supported NICs
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--------------
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* Mellanox\ |reg| BlueField 2 SmartNIC
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Prerequisites
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-------------
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- BlueField 2 running Mellanox supported kernel.
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- Enable the RegEx capabilities using system call from the BlueField 2.
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- Official support is not yet released.
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Run-time configuration
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~~~~~~~~~~~~~~~~~~~~~~
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- **ethtool** operations on related kernel interfaces also affect the PMD.
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