MLX5 poll mode driver
=====================
-The MLX5 poll mode driver library (**librte_pmd_mlx5**) provides support
+The MLX5 poll mode driver library (**librte_net_mlx5**) provides support
for **Mellanox ConnectX-4**, **Mellanox ConnectX-4 Lx** , **Mellanox
ConnectX-5**, **Mellanox ConnectX-6**, **Mellanox ConnectX-6 Dx** and
**Mellanox BlueField** families of 10/25/40/50/100/200 Gb/s adapters
------
Besides its dependency on libibverbs (that implies libmlx5 and associated
-kernel support), librte_pmd_mlx5 relies heavily on system calls for control
+kernel support), librte_net_mlx5 relies heavily on system calls for control
operations such as querying/updating the MTU and flow control parameters.
For security reasons and robustness, this driver only deals with virtual
- DevX allows to access firmware objects
- Direct Rules manages flow steering at low-level hardware layer
-Enabling librte_pmd_mlx5 causes DPDK applications to be linked against
+Enabling librte_net_mlx5 causes DPDK applications to be linked against
libibverbs.
Features
eth (with or without vlan) / ipv4 or ipv6 / tcp / payload
Other TCP packets (e.g. with MPLS label) received on Rx queue with LRO enabled, will be received with bad checksum.
+ - LRO packet aggregation is performed by HW only for packet size larger than
+ ``lro_min_mss_size``. This value is reported on device start, when debug
+ mode is enabled.
- CRC:
- The E-Switch Sample flow must have the eswitch_manager VPORT destination (PF or ECPF) and no additional actions.
- For ConnectX-5, the ``RTE_FLOW_ACTION_TYPE_SAMPLE`` is typically used as first action in the E-Switch egress flow if with header modify or encapsulation actions.
+- IPv6 header item 'proto' field, indicating the next header protocol, should
+ not be set as extension header.
+ In case the next header is an extension header, it should not be specified in
+ IPv6 header item 'proto' field.
+ The last extension header item 'next header' field can specify the following
+ header protocol type.
+
Statistics
----------
Run-time configuration
~~~~~~~~~~~~~~~~~~~~~~
-- librte_pmd_mlx5 brings kernel network interfaces up during initialization
+- librte_net_mlx5 brings kernel network interfaces up during initialization
because it is affected by their state. Forcing them down prevents packets
reception.
- **libibverbs**
- User space Verbs framework used by librte_pmd_mlx5. This library provides
+ User space Verbs framework used by librte_net_mlx5. This library provides
a generic interface between the kernel and low-level user space drivers
such as libmlx5.
Notes for testpmd
-----------------
-Compared to librte_pmd_mlx4 that implements a single RSS configuration per
-port, librte_pmd_mlx5 supports per-protocol RSS configuration.
+Compared to librte_net_mlx4 that implements a single RSS configuration per
+port, librte_net_mlx5 supports per-protocol RSS configuration.
Since ``testpmd`` defaults to IP RSS mode and there is currently no
command-line parameter to enable additional protocols (UDP and TCP as well
as IP), the following commands must be entered from its CLI to get the same
-behavior as librte_pmd_mlx4::
+behavior as librte_net_mlx4::
> port stop all
> port config all rss all
-------------
This section demonstrates how to launch **testpmd** with Mellanox
-ConnectX-4/ConnectX-5/ConnectX-6/BlueField devices managed by librte_pmd_mlx5.
+ConnectX-4/ConnectX-5/ConnectX-6/BlueField devices managed by librte_net_mlx5.
#. Load the kernel modules::
[...]
EAL: PCI device 0000:05:00.0 on NUMA socket 0
- EAL: probe driver: 15b3:1013 librte_pmd_mlx5
- PMD: librte_pmd_mlx5: PCI information matches, using device "mlx5_0" (VF: false)
- PMD: librte_pmd_mlx5: 1 port(s) detected
- PMD: librte_pmd_mlx5: port 1 MAC address is e4:1d:2d:e7:0c:fe
+ EAL: probe driver: 15b3:1013 librte_net_mlx5
+ PMD: librte_net_mlx5: PCI information matches, using device "mlx5_0" (VF: false)
+ PMD: librte_net_mlx5: 1 port(s) detected
+ PMD: librte_net_mlx5: port 1 MAC address is e4:1d:2d:e7:0c:fe
EAL: PCI device 0000:05:00.1 on NUMA socket 0
- EAL: probe driver: 15b3:1013 librte_pmd_mlx5
- PMD: librte_pmd_mlx5: PCI information matches, using device "mlx5_1" (VF: false)
- PMD: librte_pmd_mlx5: 1 port(s) detected
- PMD: librte_pmd_mlx5: port 1 MAC address is e4:1d:2d:e7:0c:ff
+ EAL: probe driver: 15b3:1013 librte_net_mlx5
+ PMD: librte_net_mlx5: PCI information matches, using device "mlx5_1" (VF: false)
+ PMD: librte_net_mlx5: 1 port(s) detected
+ PMD: librte_net_mlx5: port 1 MAC address is e4:1d:2d:e7:0c:ff
EAL: PCI device 0000:06:00.0 on NUMA socket 0
- EAL: probe driver: 15b3:1013 librte_pmd_mlx5
- PMD: librte_pmd_mlx5: PCI information matches, using device "mlx5_2" (VF: false)
- PMD: librte_pmd_mlx5: 1 port(s) detected
- PMD: librte_pmd_mlx5: port 1 MAC address is e4:1d:2d:e7:0c:fa
+ EAL: probe driver: 15b3:1013 librte_net_mlx5
+ PMD: librte_net_mlx5: PCI information matches, using device "mlx5_2" (VF: false)
+ PMD: librte_net_mlx5: 1 port(s) detected
+ PMD: librte_net_mlx5: port 1 MAC address is e4:1d:2d:e7:0c:fa
EAL: PCI device 0000:06:00.1 on NUMA socket 0
- EAL: probe driver: 15b3:1013 librte_pmd_mlx5
- PMD: librte_pmd_mlx5: PCI information matches, using device "mlx5_3" (VF: false)
- PMD: librte_pmd_mlx5: 1 port(s) detected
- PMD: librte_pmd_mlx5: port 1 MAC address is e4:1d:2d:e7:0c:fb
+ EAL: probe driver: 15b3:1013 librte_net_mlx5
+ PMD: librte_net_mlx5: PCI information matches, using device "mlx5_3" (VF: false)
+ PMD: librte_net_mlx5: 1 port(s) detected
+ PMD: librte_net_mlx5: port 1 MAC address is e4:1d:2d:e7:0c:fb
Interactive-mode selected
Configuring Port 0 (socket 0)
- PMD: librte_pmd_mlx5: 0x8cba80: TX queues number update: 0 -> 2
- PMD: librte_pmd_mlx5: 0x8cba80: RX queues number update: 0 -> 2
+ PMD: librte_net_mlx5: 0x8cba80: TX queues number update: 0 -> 2
+ PMD: librte_net_mlx5: 0x8cba80: RX queues number update: 0 -> 2
Port 0: E4:1D:2D:E7:0C:FE
Configuring Port 1 (socket 0)
- PMD: librte_pmd_mlx5: 0x8ccac8: TX queues number update: 0 -> 2
- PMD: librte_pmd_mlx5: 0x8ccac8: RX queues number update: 0 -> 2
+ PMD: librte_net_mlx5: 0x8ccac8: TX queues number update: 0 -> 2
+ PMD: librte_net_mlx5: 0x8ccac8: RX queues number update: 0 -> 2
Port 1: E4:1D:2D:E7:0C:FF
Configuring Port 2 (socket 0)
- PMD: librte_pmd_mlx5: 0x8cdb10: TX queues number update: 0 -> 2
- PMD: librte_pmd_mlx5: 0x8cdb10: RX queues number update: 0 -> 2
+ PMD: librte_net_mlx5: 0x8cdb10: TX queues number update: 0 -> 2
+ PMD: librte_net_mlx5: 0x8cdb10: RX queues number update: 0 -> 2
Port 2: E4:1D:2D:E7:0C:FA
Configuring Port 3 (socket 0)
- PMD: librte_pmd_mlx5: 0x8ceb58: TX queues number update: 0 -> 2
- PMD: librte_pmd_mlx5: 0x8ceb58: RX queues number update: 0 -> 2
+ PMD: librte_net_mlx5: 0x8ceb58: TX queues number update: 0 -> 2
+ PMD: librte_net_mlx5: 0x8ceb58: RX queues number update: 0 -> 2
Port 3: E4:1D:2D:E7:0C:FB
Checking link statuses...
Port 0 Link Up - speed 40000 Mbps - full-duplex
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