RishabhChoudhary [FreeBSD WIKI]

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About Me
● Name : Rishabh Choudhary
● IRC nick : rishabhchoudhary
email : choudhary.rishabh.pilani@gmail.com

**//'Project Details//**'

Link : https://github.com/choudharyrishabh/freebsd

Mentor : Mr. Edward Tomasz Napierała
Co Mentor: Mr Hans Petter Selasky

Project Details

● Project Title : Add USB target mode driver based on CTL

● Abstract:

CTL is the %%FreeBSD%% SCSI target layer. This projects focuses on replacing the
SCSI protocol of USB storage target mode drive, by interfacing it with CAM
Target Layer and export the LUN to the initiator machine

● Deliverables:

Making %%FreeBSD%% able to provide an USB storage target. So you would have
some ARM board capable of USB OTG, with %%FreeBSD%%, and you could connect it
via USB to some other machine and it would look like an USB flash key. And To
the initiator machine it would look like an USB flash drive. From initiator, data could be
read and content could be written from/to USB OTG of target machine

● Implementation

In current CTL version, it already have the USB part, it's called ustorage_fs.c,
and we have the SCSI target, called CTL. Right now ustorage_fs.c contains it's
own simplistic SCSI target engine; the project is to rip it out and replace with calls
to CTL, making it a CTL port. When you have that, you would run ctld(8) with
ctl.conf(5) configuration file defining what filesystem image should be 'served'
through USB. And the initiator would be able to export that LUN and it will look
like a flash drive on initiator

● Working hours

○ 35 40 hours per week

● Milestones are as follows:

○ 23 May 10
June : Adding necessary changes to kernel code so that USB
SCSI command could send to CTL and to replace ustorage_fs.c by ctl.c
○ 11 June – 21 June : extend CTL backend API to make it possible to
access USB storage through CTL backend
○ 21 June 28
June : Mid Term Evaluation
○ 28 June 20
July : add CTL backend, capable of storing data in USB OTG
○ 21 July – 10 august : Debug and Testing
○ 10 august – 16 August : Documentation

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