OpenOffload

gRPC API to offload TCP and UDP packet processing from an application to a hardware switch

Creating Language Bindings

There are two language bindings implemented in the language Makefile.

• Python
• C++

To generate the language bindings for a specific language the appropriate language and related gRPC tools need to be installed. It is the responsibility of individual implementer to create there client and server code.

Generating code

Python

$ cd openoffload
$ make all-py

C++ recommended method using docker container for dependencies

Step 1

Create the basic build image with all the required libraries

$ cd openoffload/cpp/framework/build
$ docker build -t grpcbuild:v1 .

Step 2

Create the build container from the base image There is a little hack necessary to get the proto file in the right place for docker

$ cd ..
$ cp ../../../protos/openoffload.proto .

$ docker build -t opofbld:v1 .
$ docker image ls

Step 3

Access the container to get the files

$ mkdir results
$ docker create -it --name results opofbld:v1 /bin/bash
$ docker cp results:/home/grpc/local/tests/bin/ results/
$ cd results
$ mkdir log

Run the binaries in separate windows :

./bin/opof_server_test 
and 
./bin/opof_client_test -f -v

C++ alternate method assumes all dependencies are installed on the build path

$ cd openoffload
$ make all-cpp

Installation and build for tests

Depending on which language binding used different development tools need to be installed. To just run the tests only Python is required.

Requisites

• Install Python
• Install gRPC for Python (see References)

Build

The following command builds the Basic Python code Note: The PythonSimulator has more functional testing of error conditions and follows a similar build/test pattern.

$ ./builditBasic.sh

Testing the sample code with robot

A set of Robotframework tests are provided to quickly run the client and server tests.

$ cd robot
$ mvn clean install

==============================================================================
Acceptance                                                                    
==============================================================================
Acceptance.pythonBasicTests :: Executes the python basic gRPC Tests           
==============================================================================
Setup gRPC Tests                                                      | PASS |
------------------------------------------------------------------------------
Full Client Tests                                                     | PASS |
------------------------------------------------------------------------------
Add IPv4 Session Test                                                 | PASS |
------------------------------------------------------------------------------
Add IPv4 Session Error Test                                           | PASS |
------------------------------------------------------------------------------
Add IPV6 Session Test                                                 | PASS |
------------------------------------------------------------------------------
Get Session Test                                                      | PASS |
------------------------------------------------------------------------------
Delete Session Test                                                   | PASS |
------------------------------------------------------------------------------
Add Mirror Session Test                                               | PASS |
------------------------------------------------------------------------------
Get Closed Sessions Test                                              | PASS |
------------------------------------------------------------------------------
Get All Closed Sessions Test                                          | PASS |
------------------------------------------------------------------------------
Suite Teardown                                                        | PASS |
------------------------------------------------------------------------------
Acceptance.pythonBasicTests :: Executes the python basic gRPC Tests   | PASS |
11 critical tests, 11 passed, 0 failed
11 tests total, 11 passed, 0 failed
==============================================================================
Acceptance.pythonSimulatorTests :: Executes the python basic gRPC Tests       
==============================================================================
Setup gRPC Tests                                                      | PASS |
------------------------------------------------------------------------------
Run Client Tests                                                      | PASS |
------------------------------------------------------------------------------
Suite Teardown                                                        | PASS |
------------------------------------------------------------------------------
Acceptance.pythonSimulatorTests :: Executes the python basic gRPC ... | PASS |
3 critical tests, 3 passed, 0 failed
3 tests total, 3 passed, 0 failed
==============================================================================
Acceptance                                                            | PASS |
14 critical tests, 14 passed, 0 failed
14 tests total, 14 passed, 0 failed
==============================================================================
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  36.208 s
[INFO] Finished at: 2021-05-11T12:36:34Z
[INFO] ------------------------------------------------------------------------


## Testing the sample code with python directly

Create four separate terminal windows a client and three server windows

### Server Window (Offload sessions)

Start the offload server in one window by going to the build directory and running the script below.

```bash
$ cd buildBasic
$ ./runOffloadServer.sh

Client window

Start the client in the fourth window by going to the build directory and running the script below.

$ cd buildBasic
$ ./runClient.sh

There should be results in the client window similar to the below:

-------------- Add IPv4 Session --------------
Adding Session
1001
-------------- Add IPv6 Session --------------
Adding Session
1001
-------------- Get Session --------------
Getting Session
SessionId: 1001
Session State: _ESTABLISHED
Session RequestStatus: 0
Session SessionCloseCode: 0
Session InPackets 1000
Session OutPackets 200000
Session startTime seconds: 1593188883
nanos: 978987000

Session endTime
-------------- Delete Session --------------
Getting Session
SessionId: 1001
Session RequestStatus: 0
Session State: _CLOSING_1
Session RequestStatus: 0
Session SessionCloseCode: 0
Session InPackets 2000
Session OutPackets 400000
Session startTime seconds: 1593188883
nanos: 979860000

Session endTime seconds: 1593188883
nanos: 979860000

-------------- Add Mirror and Forward Session --------------
Adding Session
1001
-------------- Check for Closed Sessions --------------
### RECEIVED SESSION #####
SessionId: 1001
Session State: _CLOSED
Session RequestStatus: 0
Session SessionCloseCode: 0
Session InPackets 1000
Session OutPackets 200000
Session startTime seconds: 1593188883
nanos: 989916000

Session endTime
##########################
### RECEIVED SESSION #####
SessionId: 1002
Session State: _CLOSED
Session RequestStatus: 0
Session SessionCloseCode: 0
Session InPackets 2000
Session OutPackets 400000
Session startTime seconds: 1593188883
nanos: 989916000

Session endTime
##########################
### RECEIVED SESSION #####
SessionId: 1001
Session State: _CLOSED
Session RequestStatus: 0
Session SessionCloseCode: 0
Session InPackets 1000
Session OutPackets 200000
Session startTime seconds: 1593188883
nanos: 992831000

Session endTime
##########################
### RECEIVED SESSION #####
SessionId: 1002
Session State: _CLOSED
Session RequestStatus: 0
Session SessionCloseCode: 0
Session InPackets 2000
Session OutPackets 400000
Session startTime seconds: 1593188883
nanos: 992831000

Session endTime
##########################


------------Creating new devices---------------------

Adding Device Description:  Bluefield-1
Status:  _DEVICE_REGISTERED
Adding Device Description:  XDP
Status:  _DEVICE_REGISTERED

------------- Listing available Devices --------------------

### Registered Device ####
Name:  Bluefield-1
Description:  Acme SmartNIC
Type:  _SMARTNIC
Session Capacity:  2000000
Session Rate:  100000
### Registered Device ####
Name:  XDP
Description:  Software Implementation
Type:  _SOFTWARE
Session Capacity:  200000
Session Rate:  10000

------------- Activating Device --------------------

### Activating Device ####
Activated Device:  Bluefield-1
Status:  _DEVICE_ACTIVATED

------------- Activation Tests Complete --------------------

MAINTAINERS

Developed for AT&T by Brian Freeman and Richard Bowman, June 2020

Current maintainers:

• Brian Freeman (at&t)
• Richard Bowman (at&t)
• John McDowall (palo alto networks)

References

1. gRPC Python Quick Start Guide