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0x13: An Asynchronous Dataplane for FRR
by Jamal Hadi Salim 09 Feb '19

09 Feb '19

Nuts and bolts Talk. The FRR (Free-range Routing) software suite is going through a revamp. There is a move to an async threaded model which is planned to utilize new netlink features to improve scalability. This model will also allow programming FIBs and NHs on remote systems. In this talk Mark Stapp will describe the current state of the work and challenges involved in achieving this goal. Some initial results and future plans will be discussed. https://netdevconf.org/0x13/news.html?talk-FRR-async cheers, jamal

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0x13: Nutsnbolts Talk, XDP based DDoS mitigation
by Jamal Hadi Salim 08 Feb '19

08 Feb '19

Cloudlflare is back to describe their latest DDoS mitigation system. Many lessons learnt. In this talk, Arthur Fabre will focus on the implementation of the Cloudflare XDP solution. Perf-based packet sampling is used to detect the attack. The followup mitigation subsystem automatically generates eBPF code in response to attacks. https://netdevconf.org/0x13/session.html?talk-XDP-based-DDoS-mitigation cheers, jamal

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0x13: Implementing the 'TCP Prague' Requirements for L4S
by Jamal Hadi Salim 08 Feb '19

08 Feb '19

Nuts-n-bolts Talk. A set of changes to DCTCP that would make it deployable over the public Internet are dubbed the 'TCP Prague requirements'. Bob Briscoe et al will introduce the important components of the first 'TCP Prague' implementation which runs on Linux. They will provide rationale and explanation on how the parts integrate together, both within each system and at Internet scale; they will outline the maturity of each component implementation, plus some points of interest and issues where decisions are still needed. https://netdevconf.org/0x13/session.html?talk-tcp-prague-l4s cheers, jamal

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0x13: Talk, IPsec encapsulation over TCP
by Jamal Hadi Salim 07 Feb '19

07 Feb '19

New accepted Nuts-n-bolts talk. Many network middleboxes either muck or block all UDP traffic; this includes IKE and IPsec. They are, however, happy to allow TCP connections through because they appear to be web traffic. Sabrina will describe to get the middle boxes happy with TCP by introducing encapsulation over standard TCP connections based on RFC 8229. She will further describe the implementation approach which utilizes existing kernel infrastructure (TCP upper layer protocol mechanism (ULP) and stream parser), and finaly how it can be used by userspace IKE daemons. https://netdevconf.org/0x13/session.html?talk-ipsec-encap cheers, jamal

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0x13: accepted talk, Performance Study of NVMe/TCP and NVMe/RoCE on Linux
by Jamal Hadi Salim 07 Feb '19

07 Feb '19

The PC has accepted another nuts-n-bolts talk. With the addition of NVMe over Fabrics (NVMe-oF) on Linux (using TCP) - there is that elephant in the room question that needs to be answered. Is there a performance impact when using TCP instead of an RDMA transport such as RoCE? Ariel Cohen has some answers. In his talk he will describe a performance study comparing NVMe/TCP to NVMe/RoCE on Linux. Throughput, latency distribution, and CPU load are measured and compared. A performance comparison of these kernel protocols to user-level protocols using SPDK will also be described. https://netdevconf.org/0x13/session.html?talk-nvme-tcp-roce cheers, jamal

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0x13: nutsnbolts talk, The Core Cost of Doing Business
by Jamal Hadi Salim 06 Feb '19

06 Feb '19

So you want to run a Linux network service and not clear how much resources you need? Don Wallwork and Andy Gospodarek will be presenting a formula for estimating the minimum number of server cores - running Linux network kernel - for a particular network service at a given rate and frame size. They will cover IPv4 and IPv6 as well and VxLAN encapsulated or tunneled traffic with the goal of understanding how the utilization of these cores impacts planning and deployment of new systems. More info: https://netdevconf.org/0x13/session.html?talk-core-cost cheers, jamal

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0x13: moonshot talk, AF_GRAFT: A new address family for containerized applications
by Jamal Hadi Salim 06 Feb '19

06 Feb '19

Ryo Nakamura believes we can take container networking to a new level. Why do we still need to use old-school virtual ports (think veth) for inter-container networking? In this talk, Ryo will introduce a new socket family, AF_GRAFT, for containers. Instead of the link between the host and container network stacks, AF_GRAFT provides a socket-layer interconnection between them. https://netdevconf.org/0x13/session.html?talk-AF_GRAFT cheers, jamal

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0x13: Nut-n-bolts workshop, Hardware Offload
by Jamal Hadi Salim 05 Feb '19

05 Feb '19

Roopa Prabhu and Or Gerlitz will co-chair the Hardware Offload workshop. The primary goal of this workshop is to discuss recent updates and futures to network hardware offload API’s and infrastructure in the Linux kernel. More info: https://www.netdevconf.org/0x13/session.html?workshop-hardware-offload cheers, jamal

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0x13: Nut-n-bolts Tutorial, XDP
by Jamal Hadi Salim 04 Feb '19

04 Feb '19

If you dont know much about XDP then your day of salvation has arrived! Two(not just one) networking Vikings[1] will be giving a hands-on tutorial on XDP. Masters Jesper Brouer and Toke Høiland-Jørgensen will not be training their students on Viking weaponry. That is a different conference. At netdev 0x13 they will be teaching you on the intricacies of XDP. The end goal of the tutorial is to walk away with enough knowledge to write your own XDP code covering your use case. The instructors will send details later on what you need to setup on what to setup on your laptop. The tutorial will cover the tooling, coding basics all the way to writing meaningful XDP applications and running them. Come and enjoy this session in person! More info: https://netdevconf.org/0x13/session.html?tutorial-XDP-hands-on cheers, jamal

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0x13: Workshop, Traffic Control
by Jamal Hadi Salim 03 Feb '19

03 Feb '19

The PC has accepted a new workshop. Jamal Hadi Salim will chair the TC workshop. More info: https://www.netdevconf.org/0x13/session.html?workshop-Traffic-Control cheers, jamal

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