eQUIC Gateway: Maximizing QUIC Throughput using a Gateway Service based on eBPF + XDP Gustavo Pantuza, Marcos Augusto M. Vieira, Luiz Filipe M. Vieira 26th IEEE Symposium on Computers and Communications Athens, Greece, September 5-8, 2021 IEEE ISCC 2021 

Agenda ■ Introduction ■ QUIC protocol ■ XDP + eBPF ■ eQUIC ■ Experiments ■ Results ■ Future work ■ Conclusion 

Introduction ■ Tail at scale (2013) ■ Pluginizing QUIC (2019) ■ AccelTCP (2020) ■ Making QUIC quicker (2020) Image extracted from Cloudflare blog: https://blog.cloudflare.com/content/images/2018/07/[email protected] 

Introduction ■ Kernel bypass ■ Nic Offload ■ Kernel offload 

QUIC protocol ■ Being tested since 2012 ■ Evolution for TCP ■ Good results for HTTPs applications 

QUIC protocol 

XDP + eBPF 

eQUIC 

eQUIC lsquic ■ Implemented on top of lsquic ■ User space library (c lang) ■ Kernel space module (eBPF) ■ eBPF map ■ Quota control 

eQUIC 

Experiments ■ 1 Server ○ HTTPs application over QUIC ○ eQUIC module ■ 8 Clients ■ Request throughput (reqs/s) ■ Request latency (ms) ■ CPU usage (µs) 

Results 

Results 

Results 

Results 

Results 

Future work ■ implement QUIC encryption offload ■ Other gateway services (rate limiting, authentication, authorization, ...) ■ kernel space as programmable data plane eQUIC g a t e w a y 

Conclusion ■ +30.9% request throughput ■ -65% average request duration ■ -26.4% CPU usage for packet filtering ■ -89% less system calls eQUIC g a t e w a y https://github.com/pantuza/equic 

eQUIC Gateway: Maximizing QUIC Throughput using a Gateway Service based on eBPF + XDP Gustavo Pantuza, Marcos Augusto M. Vieira, Luiz Filipe M. Vieira 26th IEEE Symposium on Computers and Communications Athens, Greece, September 5-8, 2021 IEEE ISCC 2021