projects / ovs.git / blame
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| 81a114e5 BP |
1 | How to Use OFTest With Open vSwitch |
| 2 | =================================== | |
| 3 | ||
| 4 | This document describes how to use the OFTest OpenFlow protocol | |
| 5 | testing suite with Open vSwitch in "dummy mode". In this mode of | |
| 6 | testing, no packets travel across physical or virtual networks. | |
| 7 | Instead, Unix domain sockets stand in as simulated networks. This | |
| 8 | simulation is imperfect, but it is much easier to set up, does not | |
| 9 | require extra physical or virtual hardware, and does not require | |
| 10 | supervisor privileges. | |
| 11 | ||
| 12 | Prerequisites | |
| 13 | ------------- | |
| 14 | ||
| 15 | First, build Open vSwitch according to the instructions in INSTALL. | |
| 16 | You need not install it. | |
| 17 | ||
| 18 | Second, obtain a copy of OFTest and install its prerequisites. You | |
| 19 | need a copy of OFTest that includes commit 406614846c5 (make ovs-dummy | |
| 20 | platform work again). This commit was merged into the OFTest | |
| 21 | repository on Feb 1, 2013, so any copy of OFTest more recent than that | |
| 22 | should work. | |
| 23 | ||
| 24 | Testing OVS in dummy mode does not require root privilege, so you may | |
| 25 | ignore that requirement. | |
| 26 | ||
| 27 | Optionally, add the top-level OFTest directory (containing the "oft" | |
| 28 | program) to your $PATH. This slightly simplifies running OFTest later. | |
| 29 | ||
| 30 | Running OFTest | |
| 31 | -------------- | |
| 32 | ||
| 33 | To run OFTest in dummy mode, run the following command from your Open | |
| 34 | vSwitch build directory: | |
| 35 | ||
| 36 | make check-oftest OFT=<oft-binary> | |
| 37 | ||
| 38 | where <oft-binary> is the absolute path to the "oft" program in | |
| 39 | OFTest. | |
| 40 | ||
| 41 | If you added "oft" to your $PATH, you may omit the OFT variable | |
| 42 | assignment: | |
| 43 | ||
| 44 | make check-oftest | |
| 45 | ||
| 46 | By default, "check-oftest" passes "oft" just enough options to enable | |
| 47 | dummy mode. You can use OFTFLAGS to pass additional options. For | |
| 48 | example, to run just the basic.Echo test instead of all tests (the | |
| 49 | default) and enable verbose logging: | |
| 50 | ||
| 51 | make check-oftest OFT=<oft-binary> OFTFLAGS='--verbose -T basic.Echo' | |
| 52 | ||
| 53 | Interpreting OFTest Results | |
| 54 | --------------------------- | |
| 55 | ||
| 56 | Please interpret OFTest results cautiously. Open vSwitch can fail a | |
| 57 | given test in OFTest for many reasons, including bugs in Open vSwitch, | |
| 58 | bugs in OFTest, bugs in the "dummy mode" integration, and differing | |
| 59 | interpretations of the OpenFlow standard and other standards. | |
| 60 | ||
| 61 | Open vSwitch has not been validated against OFTest. Please do report | |
| 62 | test failures that you believe to represent bugs in Open vSwitch. | |
| 63 | Include the precise versions of Open vSwitch and OFTest in your bug | |
| 64 | report, plus any other information needed to reproduce the problem. | |
| 65 | ||
| 66 | Contact | |
| 67 | ------- | |
| 68 | ||
| 69 | bugs@openvswitch.org | |
| 70 | http://openvswitch.org/ |