Nsnam - User contributions [en]

GSOC2022TCPMaximumSegmentSize

2022-07-27T03:01:31Z

Akash98Sky: /* Weekly Reports */

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Back to [[Summer_Projects#Google_Summer_of_Code_2022 | GSoC 2022 projects]]

= Project Overview =

* '''Project Name:''' TCP maximum segment size (MSS) improvements
* '''Student:''' [mailto:a98mondal@gmail.com Akash Mondal]
* '''Mentors:''' Mohit Tahiliani, Bhaskar Kataria, Vivek Jain
* '''Google page:''' https://summerofcode.withgoogle.com/programs/2022/projects/QsOiooM7
* '''Project Goals:''' TCP MSS directly influences the size of an IP packet. And an optimal packet size can highly improve the throughput of a network. Thus, the goal of this project is to dynamically change the MSS of a TCP connection, which can be done by the following setups:
** Add Path MTU discovery support for IPv4
** Communication layer between l3 and l4 protocols to send PMTU updates
** Adapt TCP to support dynamic changes of the maximum segment size (MSS)
* '''Repository:'''
* '''About Me:''' I’m a Master of Engineering student at Jadavpur University, Kolkata. I have an interest in application development and competitive coding. And I also love to contribute to open sources. I have developed several app development projects on the MERN stack. And I extensively use C++ and its powerful STL libraries for problem-solving related to competitive coding. I started working with ns-3 while doing my final year project of M.E. and eventually grew my interest in computer networks as well. Sometimes I draw random sketches and portraits during my free time, which I take as a hobby. I enjoy doing all my work listening to music because it boosts my brain, so I low-key consider myself a music lover too.

= Milestones and Deliverables =
* [https://docs.google.com/document/d/1GEY3kMx4-WCzZZcWb9FNVLpRkkGF6URCywdNeVClqeo/edit?usp=sharing Detailed Project Plan] (will be continuously updated throughout the GSoC program duration)

= Weekly Reports =
''' Week 1 '''

Duration: June 6 - June 12

* Study about Layering, Router Specs, Storing & Purging PMTU from RFC 1191.
* Understand different approaches to path MTU discovery (Packetization Layer Path MTU Discovery [RFC 4821], Classical Path MTU Discovery [RFC 1191]).

''' Week 2 '''

Duration: June 13 - June 19

* Understand the working of Packetization Layer Path MTU Discovery and Classical Path MTU Discovery.
* List out the main differences between the two. [https://docs.google.com/document/d/1GEY3kMx4-WCzZZcWb9FNVLpRkkGF6URCywdNeVClqeo/edit#bookmark=id.iqs0qncuw3kj link]

''' Week 3 '''

Duration: June 20 - June 26

* Pros and Cons of Packetization Layer Path MTU Discovery and Classical Path MTU Discovery. [https://docs.google.com/document/d/1GEY3kMx4-WCzZZcWb9FNVLpRkkGF6URCywdNeVClqeo/edit#bookmark=id.7pr1qhinl6nk link]
* Flow chart to understand the working of Packetization Layer Path MTU Discovery. [https://docs.google.com/document/d/1GEY3kMx4-WCzZZcWb9FNVLpRkkGF6URCywdNeVClqeo/edit#bookmark=id.dwzl4yz2yzws link]

''' Week 4 '''

Duration: June 27 - June 3

* Planned the design for the implementation of Packetization Layer Path MTU Discovery.
* Created a diagram showing different class function interactions in this implementation.

''' Week 5 '''

Duration: June 4 - June 10

* Added classical path MTU discovery implementation to IPv4 network.
* Create a merge request implementing Classical Path MTU Discovery.

''' Week 6 '''

Duration: June 11 - June 17

* Did different code refactoring and changes as suggested.
* Made both implemented Ipv4 PMTUD and already existing IPv6 PMTUD aligned to each other.

''' Week 7 '''

Duration: June 18 - June 24

* Made changes such that any router, that doesn't have PMTUD enabled, uses the minimum link MTU.
* Updated MTU getter and setter functions at the IP l4 protocol
** GetLinkMtu - specific for output device link mtu
** GetPmtu - for geting pmtu when PMTUD is enabled, or min mtu value when disabled
** SetPmtu - for setting pmtu from the icmp

GSOC2022TCPMaximumSegmentSize

2022-06-28T07:41:22Z

Akash98Sky:

GSOC2022TCPMaximumSegmentSize

2022-05-27T12:25:01Z

Akash98Sky: /* Milestones and Deliverables */

GSOC2022TCPMaximumSegmentSize

2022-05-26T22:03:35Z

Akash98Sky: /* Project Overview */