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Bounded loops in BPF programs

Bounded loops in BPF programs

Posted Dec 4, 2018 22:46 UTC (Tue) by ibukanov (subscriber, #3942)
In reply to: Bounded loops in BPF programs by dskoll
Parent article: Bounded loops in BPF programs

There is no need to support nested loops. Any such loop can be re-written as single loop.

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Bounded loops in BPF programs

Posted Dec 5, 2018 2:24 UTC (Wed) by dskoll (subscriber, #1630) [Link]

That would work if BPF programs couldn't call subroutines, or if the verifier chased subroutines down to make sure anything called within a loop didn't contain its own loop. Sounds pretty tricky and tedious. I don't envy those doing this work.


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