Messages in this thread | | | Date | Tue, 25 Mar 2014 20:17:12 -0400 (EDT) | Subject | Re: [PATCH net-next v2 8/9] net: filter: rework/optimize internal BPF interpreter's instruction set | From | David Miller <> |
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From: Daniel Borkmann <dborkman@redhat.com> Date: Tue, 25 Mar 2014 13:10:56 +0100
> - Conditional jt/jf targets replaced with jt/fall-through, > and forward/backward jumps now possible as well
Ummm... does anyone even remember why backwards jumps were not allowed in the original BPF?
It's to guarentee forward progress in the filter.
Allowing branching backward would allow endless loops.
Please remove this feature.
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