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vSwitch_Data_Path_HW_Offload_UM.pdf
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This manual describes the proper use of DPDK APIs to efficiently offload a part or all of the vSwitch data path to the device.
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Mellanox Technologies Confidential
vSwitch Data Path Hardware
Offload
User Guide
Rev 1.0

Doc #: MLNX-15-xxxx
Mellanox Technologies Confidential
2
Mellanox Technologies
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© Copyright 2019. Mellanox Technologies Ltd. All Rights Reserved.
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All other trademarks are property of their respective owners.
NOTE:
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DOCUMENTATION ARE PROVIDED BY MELLANOX TECHNOLOGIES AS-IS WITH ALL FAULTS OF ANY
KIND AND SOLELY FOR THE PURPOSE OF AIDING THE CUSTOMER IN TESTING APPLICATIONS THAT
USE THE PRODUCTS IN DESIGNATED SOLUTIONS. THE CUSTOMER'S MANUFACTURING TEST
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3
Mellanox Technologies Confidential
Rev 1.0
Table of Contents
Document Revision History .................................................................................................................. 4
About this Manual ................................................................................................................................. 5
Preface .................................................................................................................................................... 5
1 About vSwitch ................................................................................................................................. 6
2 DPDK rte_flow API .......................................................................................................................... 7
2.1 Groups .................................................................................................................................... 7
2.2 Mellanox Bifurcated Driver ..................................................................................................... 8
3 Offloading vSwitch Data Path ........................................................................................................ 9
3.1 vSwitch Design for Hardware Offload..................................................................................... 9
3.1.2 Hierarchical Table Tree .......................................................................................... 11
3.2 Flow Actions ......................................................................................................................... 13
3.2.1 Encap/Decap .......................................................................................................... 13
3.2.2 Mark ........................................................................................................................ 13
3.2.3 RSS ......................................................................................................................... 13
3.2.4 Modify Header ........................................................................................................ 13
3.2.5 Count ...................................................................................................................... 14
3.2.6 Drop ........................................................................................................................ 14
3.2.7 Meter ....................................................................................................................... 14
3.2.8 Loopback ................................................................................................................ 14
3.3 Packet Routing ..................................................................................................................... 15
3.3.1 Matching on Metadata ............................................................................................ 15
3.3.2 Routing Types ......................................................................................................... 15
3.3.3 Exception Rules ...................................................................................................... 17
3.4 Access Control List ............................................................................................................... 18
3.5 Packet Metering and Policing ............................................................................................... 18
3.6 Flow Aging ............................................................................................................................ 18

Rev 1.0
Mellanox Technologies Confidential
4
Document Revision History
Table 1: Document Revision History
Revision
Date
Description
1.0
February 2019
Initial revision
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