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0x12: Second Gold Sponsor, Mojatatu
by Jamal Hadi Salim 23 May '18

23 May '18

Sorry for the typo earlier. Now you know my reuse secret. Mojatatu is our second Gold Sponsor. Mojatatu Networks has been a supporter of the Netdev conference since 0.1! Thank you for sponsoring Netdev conf 0x12. https://www.netdevconf.org/0x12/news.html?gold-sponsor-mojatatu-networks cheers, jamal Again reminder: 1) June 1st is the deadline for early bird (20% off) registration fees. 2) We do have bursaries for folks who need help getting to the conference.Closes on June 20th. Open to all members of the community.

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0x12: First Sponsor, Cumulus!
by Jamal Hadi Salim 23 May '18

23 May '18

Mojatatu Networks has been a supporter of the Netdev conference since 0.1! Thank you for sponsoring Netdev conf 0x12. https://www.netdevconf.org/0x12/news.html?gold-sponsor-mojatatu-networks cheers, jamal Again reminder: 1) June 1st is the deadline for early bird (20% off) registration fees. 2) We do have bursaries for folks who need help getting to the conference.Closes on June 20th. Open to all members of the community.

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0x12: Moonshot Talk! Toward an eBPF-based clone of iptables
by Jamal Hadi Salim 22 May '18

22 May '18

Another exciting moonshot talk. Recently there have been discussions for the replacement of iptables with an eBPF-based approach. In this moonshot talk, Fulvio Risso et al discuss what they feel is needed to make such a transition. Is eBPF ready to replace iptables? Come find out and participate in the discussion. https://www.netdevconf.org/0x12/session.html?toward-an-ebpf-based-clone-of-… cheers, jamal PP: The early bird registration is still on at 20% off regular price.

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0x12:Tutorial! Server Migration with TCP_REPAIR
by Jamal Hadi Salim 21 May '18

21 May '18

Another exciting tutorial. Project CRIU works against cruelty on containers. To all you who treated containers like cattle - meet CRIU where containers are treated like pets. Come to this tutorial by Andrei Vagin, Mike Rapoport and Pavel Emelyanov and learn how to show tender loving care to your TCP applications. Learn how to checkpoint a TCP session in one container and restore it on another(possibly different machine). This instructor-led tutorial will start with illustration of a simple TCP application migration code; it will then lead towards demonstrating a more complex example where a container with an active ssh connection is checkpointed on one host and restored on another host (and the connection remains live after the restore). https://www.netdevconf.org/0x12/session.html?server-migration-with-tcp_repa… cheers, jamal PS: The CFS is officially closed as of today. Thanks to everyone who submitted. For those who have not yet been notified of the status of their submissions, rest assured the program committee is working hard and you will get a response. PPS: The early bird registration is still on. After June 1st it goes up.

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0x12: Workshop! IoT related MAC layers, header compression and routing protocols
by Jamal Hadi Salim 18 May '18

18 May '18

Stefan Schmidt will chair a working session with face to face discussions on IoT related MAC layers, header compression and routing protocols. In no particular order the agenda would roughly cover: o ieee802154 and 6lowpan subsystem status update for the last kernel releases o Defining a userspace API to configure 6lowpan header compression options o Discuss what needs to be done for an ieee802154 hardMAC extension to the stack o Improve test coverage with hwsim, tdc, scapy & TITAN o Thoughts on software fallback implementations for ieee802154 CSMA and AACK o Thoughts on a LoRa subsystem (with SCHC addition to 6lowpan) for Linux please contact Stefan to request for a slot for the above or new relevant topics. https://www.netdevconf.org/0x12/session.html?workshop-on-iot-related-mac-la… cheers, jamal

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0x12: nuts 'n bolts Talk! LSDN - Manage complex networks with ease
by Jamal Hadi Salim 17 May '18

17 May '18

Another exciting talk accepted. In this talk titled "LSDN - Manage complex (virtual) networks in cloud environment with Linux kernel facilities" Vojtech Aschenbrenner et al present LSDN, a tool for effortless management of complex (virtual) networks. Often management of virtual networks has dependencies on complex infrastructure orchestration tooling - encumbered with long running agents like OVS etc. LSDN has no external dependency on any such tools and leaves no agents running thus not only improving usability but also robustness of the operations. The tool relies entirely on the functionality provided by the Linux kernel, mainly on the Traffic Control (TC) subsystem with its recent features. Vojtech will describe LSDN features and challenges faced in its development (and how various kernel and iproute2 issues were addressed); then delve into how to write applications centred around the offered C-library and backends. Vojtech will conclude by talking about the future plans for LSDN. More info: https://www.netdevconf.org/0x12/session.html?lsdn-manage-complex-virtual-ne… cheers, jamal

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0x12: First Bronze Sponsor, Samsung Open Source Group!
by Jamal Hadi Salim 16 May '18

16 May '18

Samsung Open Source Group is our first Bronze sponsor. Thank you Samsung! https://www.netdevconf.org/0x12/news.html?bronze-sponsor-samsung-open-sourc… cheers, jamal PS: Another reminder, early bird registration (currently 20% off will go up on June 1st). https://www.netdevconf.org/0x12/registration.html

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0x12: nuts 'n bolts Talk! Building a Better NOS with Linux and Switchdev
by Jamal Hadi Salim 15 May '18

15 May '18

Another exciting talk from the program committee Amen to the Whitebox! Whitebox! Whitebox! chants. But the emerging creed of "Open" networking operating systems (NOS) is sadly still plagued with ASIC vendor SDKs and the proprietary and legacy baggage they carry. Vendor SDKs quarks impact control performance and dictate how control and datapath APIs look like. The SDK glue creates undue burden on operational interfaces design: config, debug-ability, and monitoring all suffer just so the NOS can adapt to the many every vendor SDKs. The switchdev and related hardware offload interfaces revolution in Linux have matured over the last few years. They provide a singular, cleaner interface to ASIC features. No different than other hardware offloaded by Linux - the hardware vendor provides a driver and leaves the innovation to the NOS and applications. Shrijeet Mukherjee and David Ahern have been in the dragons den of vendor SDKs and have come out scathed but wiser. In this talk they will discuss typical software architectures for a NOS and introduce a path for transitioning SDK based solutions to Switchdev and related offloads. More info: https://www.netdevconf.org/0x12/session.html?building-a-better-nos-with-lin… cheers, jamal PS: Another reminder, early bird registration (currently 20% off will go up on June 1st).

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0x12: Moonshot Talk! Developing and Deploying a TCP Replacement for the Web
by Jamal Hadi Salim 14 May '18

14 May '18

Is TCP - at 44 - too old, slow and has bad habits that cant be fixed? Does shaving a few milliseconds of latency on a web transaction matter that much to call out for a new transport? The new kid on the block, QUIC thinks so. QUIC has been globally deployed at Google on thousands of servers. If you are running chrome as a browser and using YouTube, you are likely using QUIC. Estimates are 7% of the internet traffic is now QUIC. In this talk Jana Iyengar and Ian Swett will provide an overview of QUIC, its motivations and the performance improvements observed at Google. They will discuss performance bottlenecks in Linux kernel UDP that were seen at Google's servers, what was done to overcome them and what work remains to be done in the kernel as QUIC becomes more widely deployed. More info: https://www.netdevconf.org/0x12/session.html?developing-and-deploying-a-tcp… cheers, jamal PS: Another reminder, early bird registration (currently 20% off will go up on June 1st).

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0x12: Nuts-n-Bolts Workshop! Traffic Control
by Jamal Hadi Salim 11 May '18

11 May '18

First Workshop announcement! Jamal Hadi Salim will chair a working session with face to face discussions on different Traffic Control topics. https://www.netdevconf.org/0x12/session.html?tc-workshop cheers, jamal PS: Speaking in the third person is allowed. Reminder again: Early bird registration closes on June 1st.

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0x12: Nuts-n-Bolts Talk! Suricata, an XDP adventure
by Jamal Hadi Salim 10 May '18

10 May '18

The program committee has accepted another exciting talk! Suricata is a widely deployed open source IDS/IPS/NSM. Suricata 4.1 will include eBPF and XDP support. In this respect, Suricata is amongst pioneers to deploy these technologies in a production environment. The journey to get to eBPF and XDP support and remove the cobwebs took about 2 years. Eric Leblond will describe some of the challenges met and how they were addressed to get to production level quality. More info: https://www.netdevconf.org/0x12/session.html?suricata-an-xdp-adventure cheers, jamal PS:- Another reminder that: 1) Registration early bird deadline (before prices go up) is June 1st. 2) We do offer bursaries for attending the conference.

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0x12: First Sponsor, Cumulus!
by Jamal Hadi Salim 09 May '18

09 May '18

Cumulus Networks has been a solid supporter of the Netdev conference since 0.1! We appreciate and welcome them back as a Gold Sponsor for Netdev conf 0x12. https://www.netdevconf.org/0x12/news.html?gold-sponsor-cumulus cheers, jamal Again reminder: 1) June 1st is the deadline for early bird cheaper registration fees. 2) We do have bursaries for folks who need help getting to the conference.

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0x12: Hands on! Introduction to FRRouting
by Jamal Hadi Salim 08 May '18

08 May '18

In this 1.5 hour instructor-led tutorial, Donald Sharp(FRRouting maintainer) will start by introducing the FRRouting Suite to the unitiated. He will then guide us into a basic network configuration. In the second half of the tutorial, Donald will delve deeper into more advanced features on how FRR fits into the classic Data Centre architecture. https://www.netdevconf.org/0x12/session.html?introduction-to-frrouting cheers, jamal PS:- Reminder: Early bird registration offer ends June 1st.

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0x12: Moonshot Talk! A PCC-Vivace Kernel Module for Congestion Control
by Jamal Hadi Salim 07 May '18

07 May '18

Folks, Nathan Jay et al assert that there is no one-size-fits-all TCP congestion control algorithm. Different apps have different goals for their service lifetimes: Streaming video apps are sensitive to bandwidth fluctuations, voice chats desire low latency and bulk transfers only care about completion time. Varying link characteristics add another dimension to a congestion control algorithm: hardwired assumptions about the cause of packet loss or measured latency inflation can lead to reduced application performance. PCC-Vivace was created to address these issues. PCC-Vivace congestion control algorithm provides an explicit utility function that allows developers to provide weights to different performance metrics like throughput, latency, packet loss and jitter. PCC-Vivace's online learning framework also allows it to adapt to a variety of network conditions, consistently delivering high performance. The talk will discuss the challenges of implementing PCC-Vivace in the Linux kernel. Nathan will present initial results comparing the performance of Vivace with other existing Linux congestion controllers(BBR etc). The talk will also demonstrate the implementation's flexibility by creating and testing a variety of utility functions. More info at: https://www.netdevconf.org/0x12/session.html?a-pcc-vivace-kernel-module-for… cheers, jamal

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0x12: NutsNBolts Talk! Challenges migrating from NDIV to XDP
by Jamal Hadi Salim 04 May '18

04 May '18

HAProxy is a well known high performance TCP/HTTP load balancer used as a front end to applications by many very-large sites. Often HAProxy is stationed at the frontiers of the wild wild ^Wwest internet in the defense against DDOS - and at the heart of the storm sits PacketShield. PacketShield is built using NDIV. NDIV has been deployed very effectively todate and handles the intended line-rate 10Gbps processing under a variety of hostile real-world DDOS attacks. Willy Tarreau and Emeric Brun have been contemplating migrating NDIV to use XDP. In this talk they will describe what NDIV does well and what is currently lacking with XDP to make it convincing to make the jump. More details: https://www.netdevconf.org/0x12/session.html?challenges-migrating-from-ndiv… Reminder: Early bird registration expires on June 1st. cheers, jamal

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0x12: Nuts-and-bolts Talk: Using eBPF for RDS filtering
by Jamal Hadi Salim 03 May '18

03 May '18

Tushar Dave will share his experiences in implementing Reliable Datagram Socket (RDS) filtering and firewalling. RDS sits on top of both TCP and IB, which presents a challenge: while TCP deals with skbs, IB/RDMA deals with scatterlists. Traditional firewalling with netfilter deals only with skbs. Tushar is looking for a unified solution for both TCP and IB. To this end he is adding/extending eBPF helpers to process messages that are in the form of struct scatterlist. https://www.netdevconf.org/0x12/session.html?using-ebpf-for-rds-filtering Reminder: Early bird registration expires on June 1st. cheers, jamal

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0x12 Call for Submissions Extended!
by Jamal Hadi Salim 02 May '18

02 May '18

Procrastinators, you have been given a lifeline! The Call For Submissions for Netdev 0x12 has been extended to Monday, May 20, 2018. Netdev 0x12 conference has a single blind review. On how to participate see: https://netdevconf.org/0x12/submit-proposal.html cheers, jamal

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0x12: Registration is now open!
by Jamal Hadi Salim 01 May '18

01 May '18

Greetings! We are pleased to announce the opening of registration for Netdev 0x12. Netdev 0x12 conference will be held on July 11-13 at the Hyatt Regency, Montreal. Our main motivation is to bring the community together to the idea exchange fountain we call Netdev conf. And in that spirit, as in the past, the registration fee is Real Cheep. Cost is: CDN $320 for early bird registration which expires on June 1st after which the rate goes up to CDN $400. 50% off if you are a student. Go to: https://www.onlineregistrations.ca/Netdev0x12/ More details: https://www.netdevconf.org/0x12/registration.html And yes - we do accept AMEX (finally!) If you need financial assistance, note that we do provide bursaries: https://www.netdevconf.org/0x12/bursaries.html If you need a visa to attend, please dont procrastinate and contact us at: info(a)netdevconf.org + more info at: https://www.netdevconf.org/0x12/travel.html And did we mention how beautiful Montreal in July? Check: https://www.netdevconf.org/0x12/montreal.html Given there are so many activities at that time of year, we urge people to book their hotels early. Hotels information: https://www.netdevconf.org/0x12/travel.html#nearby cheers, jamal

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0x12: Moonshot Talk: BBRx: Extending BBR for Customized TCP Performance
by Jamal Hadi Salim 30 Apr '18

30 Apr '18

The future of optimal TCP involves robots! Jae Won Chung et al will discuss an extension to BBR they call BBRx which is loosely coupled to machine learning. They will describe how they study TCP path attributes in user space at runtime to find an optimal throughput-delay operating point. The results are then fed back to the kernel to tweak it. Performance of BBRx is evaluated in both LTE mobile as well as telco wireline environments and compared with classical CUBIC and BBR. cheers, jamal

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0x12: Nuts-and-bolts Talk: Communication Groups in TIPC
by Jamal Hadi Salim 27 Apr '18

27 Apr '18

Jon Malloy will talk about the new TIPC Communication Groups. Communication groups which provide the basis for a performant and scalable kernel based brokerless message bus. More details: https://www.netdevconf.org/0x12/session.html?communication-groups-in-tipc cheers, jamal

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0x12: Nuts-and-bolts Talk: Communication Groups in TIPC
by Jamal Hadi Salim 27 Apr '18

27 Apr '18

Jon Malloy will talk about the new TIPC Communication Groups. Communication groups which provide the basis for a performant and scalable kernel based brokerless message bus. More details: https://www.netdevconf.org/0x12-test/session.html?communication-groups-in-t… cheers, jamal

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0x12: First Hands-on! IPsec/IKE tutorial/lab
by Jamal Hadi Salim 26 Apr '18

26 Apr '18

If you have ever been intimated by IPsec or always wondered what IPsec is and/or how IPsec datapath works in the kernel or how IPsec control path works in user space then this tutorial is for you. Sowmini Varadhan and Paul Wouters will guide you through the theory then the operations for two hours! You will be walked through the steps for setting up IKE/IPsec on VMs on your laptops. A number of other VMs will be made available as targets to connect-to for the different IKE scenarios via Libreswan. These scenarios include some commonly encountered roadblocks that will be used to teach IPsec trouble-shooting issues. More details: https://www.netdevconf.org/0x12/session.html?ipsecike-tutoriallab cheers, jamal

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0x12: Location Selected!
by Jamal Hadi Salim 24 Apr '18

24 Apr '18

We are pleased to announce that we have selected our conference location. Netdev 0x12 conference will be held at the Hyatt Regency, Montreal. The Hyatt is located at the Complexe Desjardins. Address: 1255 Jeanne-Mance St, Montreal, QC H5B 1E5 url: https://montreal.regency.hyatt.com/en/hotel/home.html Montreal is a fantastic place to visit in the summer; so many things to see and do. So come before the conference or stay after the conference ;-> We are going to be putting a lot more info, but here is a starting point: https://www.netdevconf.org/0x12/montreal.html This time we are not going to block a bunch of rooms at the conference hotel. There are so many options in that neighborhood for hotels and short term rentals. We will be providing a big list of options and will assist folks who need our help. If you have any questions that you feel other people may be interested in regarding this topic, please post on this list (people(a)netdevconf.org) if you want to only reach the organizers post to info(a)netdevconf.org cheers, jamal

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0x12: First Nuts-n-bolts talk! Subscriber Billing System Over Commodity Hardware
by Jamal Hadi Salim 23 Apr '18

23 Apr '18

Do you know how your data plan gets billed by them telcos? Yes, them. What about a shared (family) plan? How can one use existing kernel features to build a robust billing and service platform? Vikram Siwach will describe the challenges faced in getting Linux on commodity hardware[1] and kernel changes made to make all this work. https://www.netdevconf.org/0x12/session.html?subscriber-billing-system-over… cheers, jamal [1] it is called commodity because telcos like to buy these boxes from big vendors. The box was so commodity it had a Mellanox connectx3 on it!

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0x12: First Moonshot talk! Kernel TLS handshakes for HTTPS DDoS mitigation
by Jamal Hadi Salim 21 Apr '18

21 Apr '18

Our first accepted talk! KTLS focuses mostly on zero-copy data transfers and only offloads encryption and decryption and ignores TLS handshakes. However, TLS handshakes are susceptible to DDos attacks which are very effective at depleting resources. Alexander Krizhanosky will describe Offloading Kernel TLS handshakes to counter HTTPS DDoS mitigation https://www.netdevconf.org/0x12/news.html?talk-alexander-krizhanosky-kernel… The session submission is still open! Don't procrastinate! cheers, jamal

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