MultiPath TCP : Linux Kernel Implementation

Transcription

1 MultiPath : Linux Kernel Implementation Presenter: Christoph Paasch IP Networking Lab Université catholique de Louvain February 3, Presenter: Christoph Paasch - IP Networking Lab 1 / 15

2 Current situation Mobile devices can connect to the Internet via different interfaces 3G Internet WiFi Data-centers have a large redundant infrastructure Dual-Homed Servers Presenter: Christoph Paasch - IP Networking Lab 2 / 15

3 Current situation is used for 95% of the Internet communications Presenter: Christoph Paasch - IP Networking Lab 3 / 15

4 Current situation is used for 95% of the Internet communications identifies connections by the 5-tuple regular IP: IP: Port: Port: 80 Presenter: Christoph Paasch - IP Networking Lab 3 / 15

5 Current situation is used for 95% of the Internet communications identifies connections by the 5-tuple regular IP: IP: Port: Port: 80 A single connection cannot be used across different interfaces. Presenter: Christoph Paasch - IP Networking Lab 3 / 15

6 Current situation Mobile devices should connect to the Internet by using all their interfaces interfaces 3G Internet WiFi Data-centers should use their redundant infrastructure in the most efficient way Dual-Homed Servers Presenter: Christoph Paasch - IP Networking Lab 4 / 15

7 MultiPath MultiPath (short MP) MP allows a single data-connection to use several interfaces simultaneously. Allows failover from one interface to another (e.g., mobile client). Increases the bandwidth due to resource pooling. Better load-balancing due to fair coupled congestion control. 3G Internet WiFi Dual-Homed Servers Presenter: Christoph Paasch - IP Networking Lab 5 / 15

8 Linux Kernel MultiPath Linux Kernel MP About lines of code in the Linux Kernel Lots of performance evaluation in different research-papers. Live-Demo of MP at the end of this presentation. Implementation freely available at Presenter: Christoph Paasch - IP Networking Lab 6 / 15

9 MultiPath - The Protocol Application Layer standard Socket API Transport Layer MultiPath Network Layer WiFi 3G Wired Presenter: Christoph Paasch - IP Networking Lab 7 / 15

10 MultiPath - The Implementation Establishing a connection Application Layer standard Socket API Transport Layer Connection Establishment Is the Peer MP-Capable? Master subsocket Network Layer Presenter: Christoph Paasch - IP Networking Lab 8 / 15

11 MultiPath - The Implementation Establishing a connection Application Layer standard Socket API Transport Layer Meta-socket MultiPath Master subsocket Creating new s Slave subsocket Slave subsocket Network Layer Presenter: Christoph Paasch - IP Networking Lab 9 / 15

12 MultiPath - The Implementation Sending packets over MultiPath Application Layer standard Socket API Transport Layer Meta-socket send-queue MultiPath MultiPath Scheduler Master subsocket Slave subsocket Slave subsocket Network Layer Presenter: Christoph Paasch - IP Networking Lab 10 / 15

13 MultiPath - The Implementation Receiving packets over MultiPath Application Layer standard Socket API Transport Layer Meta-socket send-queue MultiPath receive-queue ofo-queue Master subsocket Slave subsocket Slave subsocket ofo-queue ofo-queue ofo-queue Network Layer Presenter: Christoph Paasch - IP Networking Lab 11 / 15

14 MultiPath - Performance Results Interconnected testbed with two separate paths at Presenter: Christoph Paasch - IP Networking Lab 12 / 15

15 MultiPath - Performance Results Interconnected testbed with two separate paths at regular can only use one single paths regular 200 Ratio of Requests per second [%] regular Transfert-size [KB] Presenter: Christoph Paasch - IP Networking Lab 12 / 15

16 MultiPath - Performance Results Interconnected testbed with two separate paths at regular can only use one single paths MultiPath uses both paths simultaneously regular MP 200 Ratio of Requests per second [%] MP regular Transfert-size [KB] Presenter: Christoph Paasch - IP Networking Lab 12 / 15

17 MultiPath - Performance Results Interconnected testbed with two separate paths at regular can only use one single paths MultiPath uses both paths simultaneously regular MP 200 Ratio of Requests per second [%] MP regular Transfert-size [KB] Presenter: Christoph Paasch - IP Networking Lab 12 / 15

18 MultiPath Use it!!! Compile the source yourself or Install from our apt-repository or Set it up on a virtualbox-image or Use it with user-mode-linux Contribute Integrate some missing features Optimize the code Refactoring the code Testing Presenter: Christoph Paasch - IP Networking Lab 13 / 15

19 MultiPath - Live-Demo Live-Demo!!! Public Webradio FOSDEM 3G MP regular WiFi MP-Proxy Presenter: Christoph Paasch - IP Networking Lab 14 / 15

20 MultiPath - An open-source project Download MP, try it out, ask questions on the mptcp-dev list and contribute. Thanks!!! Presenter: Christoph Paasch - IP Networking Lab 15 / 15