[dnsdist] Some questions about applying for GSoC and newBPFFilter

[Y7n05h]

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Hi!

I spent some time this week preparing for and participating in college
finals (last semester's finals were postponed this week due to
COVID-19), so not much time on DNSDist. Fortunately, the exam is over.

I was trying to implement https://github.com/PowerDNS/pdns/issues/9690
and found that typing bpf = newBPFFilter(1024, 1024, 1024) would give
me an error here.

[string "bpf = newBPFFilter(1024, 1024, 1024)"]:1: Caught exception:
Error creating a BPF map of size 1024:
Operation not permitted stack traceback:
       [C]: in function 'newBPFFilter'
       [string "bpf = newBPFFilter(1024, 1024, 1024)"]:1: in main chunk


I had the same problem on ArchLinux and Ubuntu 21.10.
They all use the default kernel and run DNSDist as root.
I wonder why this is.


My GSoC proposal has not been submitted due to previous exams.
I have now submitted a draft, if possible, please suggest some
revisions.

A copy of the proposal can be accessed from the link below.
Comments are welcome.

https://docs.google.com/document/d/1_izkQDoEhrv4Ooa4ja4WVUDyLvsNSKE_GgnRUUJPk-g


--
Best regards,

Y7n05h

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