X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fnics%2Fnfp.rst;h=5f2a0698f6a8ae86e557bc5351429ab6b36588a9;hb=89a90fb38833ad6723942fe0dae5e5473485af0e;hp=927c03c63baf9c23bef4e4e3560467a134360d08;hpb=b2a99605bc3c00b85a42afd8ce5690f5539a70f8;p=dpdk.git diff --git a/doc/guides/nics/nfp.rst b/doc/guides/nics/nfp.rst index 927c03c63b..5f2a0698f6 100644 --- a/doc/guides/nics/nfp.rst +++ b/doc/guides/nics/nfp.rst @@ -1,33 +1,7 @@ -.. BSD LICENSE +.. SPDX-License-Identifier: BSD-3-Clause Copyright(c) 2015-2017 Netronome Systems, Inc. All rights reserved. All rights reserved. - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in - the documentation and/or other materials provided with the - distribution. - * Neither the name of Intel Corporation nor the names of its - contributors may be used to endorse or promote products derived - from this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - NFP poll mode driver library ============================ @@ -75,7 +49,7 @@ compile it along with other DPDK PMDs even if no BSP was installed previously. Of course, a DPDK app will require such a BSP installed for using the NFP PMD, along with a specific NFP firmware application. -Default PMD configuration is at the **common_linuxapp configuration** file: +Default PMD configuration is at the **common_linux configuration** file: - **CONFIG_RTE_LIBRTE_NFP_PMD=y** @@ -145,6 +119,18 @@ is no support for RX interrupts and it is not possible either to use those PF ports with the device hotplug functionality. +PF multiprocess support +----------------------- + +Due to how the driver needs to access the NFP through a CPP interface, which implies +to use specific registers inside the chip, the number of secondary processes with PF +ports is limited to only one. + +This limitation will be solved in future versions but having basic multiprocess support +is important for allowing development and debugging through the PF using a secondary +process which will create a CPP bridge for user space tools accessing the NFP. + + System configuration --------------------