X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fnics%2Fmlx4.rst;h=1f1e2f6c77677e19a13e835f9d5eb39318561daf;hb=cbbbbd3365d299f55233b8f9a09ce0d9e43ec3ad;hp=c8a02be4dda23dbee6c6c1ec4f8f330520b9cd6b;hpb=f4efc0eb9703ad275a6f7a37c9592151af55aaaf;p=dpdk.git diff --git a/doc/guides/nics/mlx4.rst b/doc/guides/nics/mlx4.rst index c8a02be4dd..1f1e2f6c77 100644 --- a/doc/guides/nics/mlx4.rst +++ b/doc/guides/nics/mlx4.rst @@ -83,7 +83,7 @@ These options can be modified in the ``.config`` file. - ``CONFIG_RTE_IBVERBS_LINK_STATIC`` (default **n**) - Embed static flavour of the dependencies **libibverbs** and **libmlx4** + Embed static flavor of the dependencies **libibverbs** and **libmlx4** in the PMD shared library or the executable static binary. - ``CONFIG_RTE_LIBRTE_MLX4_DEBUG`` (default **n**) @@ -92,6 +92,10 @@ These options can be modified in the ``.config`` file. adds additional run-time checks and debugging messages at the cost of lower performance. +This option is available in meson: + +- ``ibverbs_link`` can be ``static``, ``shared``, or ``dlopen``. + Environment variables ~~~~~~~~~~~~~~~~~~~~~ @@ -159,7 +163,6 @@ Limitations - For secondary process: - Forked secondary process not supported. - - All mempools must be initialized before rte_eth_dev_start(). - External memory unregistered in EAL memseg list cannot be used for DMA unless such memory has been registered by ``mlx4_mr_update_ext_mp()`` in primary process and remapped to the same virtual address in secondary @@ -254,7 +257,7 @@ thanks to these environment variables: Mellanox OFED as a fallback ~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- `Mellanox OFED`_ version: **4.4, 4.5**. +- `Mellanox OFED`_ version: **4.4, 4.5, 4.6**. - firmware version: **2.42.5000** and above. .. _`Mellanox OFED`: http://www.mellanox.com/page/products_dyn?product_family=26&mtag=linux_sw_drivers @@ -273,51 +276,34 @@ Installing Mellanox OFED 2. Install the required libraries and kernel modules either by installing only the required set, or by installing the entire Mellanox OFED: - For bare metal use: - - .. code-block:: console + For bare metal use:: ./mlnxofedinstall --dpdk --upstream-libs - For SR-IOV hypervisors use: - - .. code-block:: console + For SR-IOV hypervisors use:: ./mlnxofedinstall --dpdk --upstream-libs --enable-sriov --hypervisor - For SR-IOV virtual machine use: - - .. code-block:: console + For SR-IOV virtual machine use:: ./mlnxofedinstall --dpdk --upstream-libs --guest -3. Verify the firmware is the correct one: - - .. code-block:: console +3. Verify the firmware is the correct one:: ibv_devinfo -4. Set all ports links to Ethernet, follow instructions on the screen: - - .. code-block:: console +4. Set all ports links to Ethernet, follow instructions on the screen:: connectx_port_config 5. Continue with :ref:`section 2 of the Quick Start Guide `. -Supported NICs --------------- - -* Mellanox(R) ConnectX(R)-3 Pro 40G MCX354A-FCC_Ax (2*40G) - .. _qsg: Quick Start Guide ----------------- -1. Set all ports links to Ethernet - - .. code-block:: console +1. Set all ports links to Ethernet:: PCI= echo eth > "/sys/bus/pci/devices/$PCI/mlx4_port0" @@ -332,9 +318,7 @@ Quick Start Guide .. _QSG_2: 2. In case of bare metal or hypervisor, configure optimized steering mode - by adding the following line to ``/etc/modprobe.d/mlx4_core.conf``: - - .. code-block:: console + by adding the following line to ``/etc/modprobe.d/mlx4_core.conf``:: options mlx4_core log_num_mgm_entry_size=-7 @@ -343,15 +327,11 @@ Quick Start Guide If VLAN filtering is used, set log_num_mgm_entry_size=-1. Performance degradation can occur on this case. -3. Restart the driver: - - .. code-block:: console +3. Restart the driver:: /etc/init.d/openibd restart - or: - - .. code-block:: console + or:: service openibd restart @@ -361,17 +341,13 @@ Quick Start Guide Performance tuning ------------------ -1. Verify the optimized steering mode is configured: - - .. code-block:: console +1. Verify the optimized steering mode is configured:: cat /sys/module/mlx4_core/parameters/log_num_mgm_entry_size 2. Use the CPU near local NUMA node to which the PCIe adapter is connected, for better performance. For VMs, verify that the right CPU - and NUMA node are pinned according to the above. Run: - - .. code-block:: console + and NUMA node are pinned according to the above. Run:: lstopo-no-graphics @@ -383,9 +359,7 @@ Performance tuning This in order to forward packets from one to the other without NUMA performance penalty. -4. Disable pause frames: - - .. code-block:: console +4. Disable pause frames:: ethtool -A rx off tx off @@ -399,15 +373,11 @@ Performance tuning to set the PCI max read request parameter to 1K. This can be done in the following way: - To query the read request size use: - - .. code-block:: console + To query the read request size use:: setpci -s 68.w - If the output is different than 3XXX, set it by: - - .. code-block:: console + If the output is different than 3XXX, set it by:: setpci -s 68.w=3XXX @@ -426,16 +396,12 @@ Usage example This section demonstrates how to launch **testpmd** with Mellanox ConnectX-3 devices managed by librte_pmd_mlx4. -#. Load the kernel modules: - - .. code-block:: console +#. Load the kernel modules:: modprobe -a ib_uverbs mlx4_en mlx4_core mlx4_ib Alternatively if MLNX_OFED is fully installed, the following script can - be run: - - .. code-block:: console + be run:: /etc/init.d/openibd restart @@ -445,24 +411,18 @@ devices managed by librte_pmd_mlx4. not have to be loaded. #. Make sure Ethernet interfaces are in working order and linked to kernel - verbs. Related sysfs entries should be present: - - .. code-block:: console + verbs. Related sysfs entries should be present:: ls -d /sys/class/net/*/device/infiniband_verbs/uverbs* | cut -d / -f 5 - Example output: - - .. code-block:: console + Example output:: eth2 eth3 eth4 eth5 -#. Optionally, retrieve their PCI bus addresses for whitelisting: - - .. code-block:: console +#. Optionally, retrieve their PCI bus addresses for whitelisting:: { for intf in eth2 eth3 eth4 eth5; @@ -472,9 +432,7 @@ devices managed by librte_pmd_mlx4. } | sed -n 's,.*/\(.*\),-w \1,p' - Example output: - - .. code-block:: console + Example output:: -w 0000:83:00.0 -w 0000:83:00.0 @@ -486,21 +444,15 @@ devices managed by librte_pmd_mlx4. There are only two distinct PCI bus addresses because the Mellanox ConnectX-3 adapters installed on this system are dual port. -#. Request huge pages: - - .. code-block:: console +#. Request huge pages:: echo 1024 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages/nr_hugepages -#. Start testpmd with basic parameters: - - .. code-block:: console +#. Start testpmd with basic parameters:: testpmd -l 8-15 -n 4 -w 0000:83:00.0 -w 0000:84:00.0 -- --rxq=2 --txq=2 -i - Example output: - - .. code-block:: console + Example output:: [...] EAL: PCI device 0000:83:00.0 on NUMA socket 1