Re: Linux XIA - merge proposal

From: Michel Machado
Date: Tue Mar 03 2015 - 19:14:58 EST


Hi Eric,

Linux XIA is not yet mature enough for production, but we do think
that broader exposure will help us to move forward faster, and get
more in tune with the interested community. Thus, we are writing to
ask to merge our work into the Linux kernel.

I took a quick glance at the code to see if could figure out what
you were talking about. Especialy as I could not find any documents
on the packet format. The code does not transmit packets. All of the
packet transmit functions are stubs. I can think of no greater failure
for a networking protocol.

I don't know what led you this wrong conclusion, but please let me show that is not the case. Section 3.3 of our original paper linked below describes the forwarding algorithm as well as the header format.

https://www.usenix.org/system/files/conference/nsdi12/nsdi12-final13.pdf

One can find the reference to this paper in our XIA 101 page in our wiki:

https://github.com/AltraMayor/XIA-for-Linux/wiki/XIA-101

The code does transmit packet, you can find function __xip_fill_in_hdr() in file net/xia/output.c (https://github.com/AltraMayor/XIA-for-Linux/blob/xia/net/xia/output.c) that fills out the XIP header, and examples to how set up some experiments with our stack are available here:

https://github.com/AltraMayor/XIA-for-Linux/wiki/zFilter-principal
https://github.com/AltraMayor/XIA-for-Linux/wiki/4ID-principals
https://github.com/AltraMayor/XIA-for-Linux/wiki/An-exemplifying-demo

[ ]'s
Michel Machado
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