Mauricio Vásquez Bernal

Computer Networks Engineer
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Mauricio VÁSQUEZ BERNAL

Computer Networks Engineer
  • email mauriciovasquezbernal@gmail.com
  • place Medellín - Colombia

Hello! I’m Mauricio Vásquez Bernal, a research assistant at Polytechnic University of Turin, Italy. I work with eBPF (extended Berkley Packet Filter) and XDP (eXpress Data Path) tecnologies to implement high performance network functions. I am one of the main developers of polycube, an open source software framework that provides fast and lightweight network functions. I am of charge of the development of an eBPF based network plugin provider for kubernetes. I got a BS.c in Eletronic Engineering at University of Antioquia, Colombia and then I got a MS.c in Computer Engineering from Polytechnic University of Turin on 2015. Besides my work, I am an amateur MTB/road cyclist, I enjoy participating in amateur races, even though I haven't got any impresive results yet.

demoEducation

MS.c Computer Engineering
Polytechnic University of Turin, Turin - Italy
Oct 2013 - Dec 2015

I completed my master's degree in the frame of a double degree agreement between Polytechnic University of Turin and University of Antioquia. I focused my master degree mainly in computer networks.

My thesis, Implementing a Direct vm2vm Channel Communication Prototype in Open vSwitch, proposed an architecture to improve the virtual machine communication by using a shared memory mechanishm based on DPDK and Open vSwitch.

Final degree mark: 108/110 - GPA: 3.93

BS.c Eletronic Engineering
University of Antioquia, Medellín - Colombia
Mar 2009 - Sep 2013

I did my bachelor in Electronic Engineering focused on programming and computer networks. Additionally I acquired a quite good theoretical and practical knowledge on analogical and digital hardware development.

Final degree mark: 4.59/5.0 - GPA: 3.67

demoSkills

Programming Languages
C
90%
C++
80%
Golang
50%
Python
50%
Java
40%
Matlab
40%
Technologies
eBPF & XDP
80%
TCP/IP
70%
Linux
70%
DPDK
70%
SDN & NFV
60%
Kubernetes
60%
Docker & LXC
70%
Open vSwitch
60%
KVM & QEMU
60%
Git
60%
Open Stack
50%
Languages
Spanish
Native
English
80%
Italian
80%

demoExperience

Research Assistant
Polytechnic University of Turin
May 2017 - Present

I am one of the two core developers of polycube, an open source framework to build fast and lightweight virtual network functions using eBPF and XDP. I do my work remotely from Medellin - Colombia.

Consultant
Nebbiolo Technologies
Feb 2017 - May 2017

I provided consultancy services for implementing high performant virtual network functions with eBPF.

Consultant
Plumgrid (Acquited by VMWare)
Sep 2016 - Jan 2017

This was my first touch with eBPF, we developed iovisor-ovn, a prototype to show the eBPF capabilities by providing an ovn replacement for virtual machines networking.

Research Assistant
Polytechnic University of Turin
Jan 2015 - Aug 2016

I continued to work on my master thesis topic, developing a transparent optimization for inter-VM communication for Open vSwitch. During this period I participated on the Unify Europen project.

demoPublications

Creating Complex Network Services with eBPF: Experience and Lessons Learned
HPSR, June 2018

This paper presents the most promising characteristics of eBPF, the main encountered limitations while implementing complex virtual network functions, and we envision some solutions that can mitigate the latter. We also summarize the most important lessons learned while exploiting eBPF to create complex network functions and, finally, we provide a quantitative characterization of the most significant aspects of this technology.

Read the paper
Transparent Optimization of Inter-Virtual Network Function Communication in Open vSwitch
CloudNet, October 2016

This paper proposes an architecture that can optimize inter-VM communication in an NFV environment through the creation of direct channels between virtual machines. Particularly, our prototype can transparently optimize the data transfer between virtual machines running DPDK applications by dynamically recognizing the existence of point-to-point connections in the traffic steering rules, reverting back to the traditional VM-to-switch-to-VM approach when the optimization is no longer possible.

Read the paper
A Transparent Highway for inter-Virtual Network Function Communication with Open vSwitch
SIGCOMM, August 2016

This paper presents a software architecture that can dynamically and transparently establish direct communication paths between DPDK-based virtual network functions executed in virtual machines, by recognizing new point-to-point connections in traffic steering rules. We demonstrate the huge advantages of this architecture in terms of performance and the possibility to implement it with localized modifications in Open vSwitch and DPDK, without touching the VNFs.

Read the paper

demoProjects

Polycube

Polycube is an open source software framework that provides fast and lightweight network functions such as bridges, routers, firewalls, and others implemented using eBPF and XDP Linux kernel technologies. On top of polycube we built pcn-iptables, a much more efficient clone of iptables, and pcn-k8s, a network provider for kubernetes.

IOvisor-ovn

IOvisor-ovn was an experimental project that implemented the datapth for the Open Virtual Networking (OVN) using eBPF. We built a daemon that read info from the OVN North and SouthBound databases, and based on that a service topology that used eBPF in the datapath was deployed in the different servers to provide networking for different hypervisors.

Squadra Corse

Squadra Corse is the student racing team from the Polytechnic University of Turin. Each year a group of students for the different faculties design and build an electric car to compete against another university teams from all the world at the Formula SAE. I was part of the electronics and control system division, specifically I was the lead of the team that built a telemetry system for the car.

This is a photo of the SCXV presentation: