Re: activities report for July 2026

[Guy Harris <gharris () sonic net>]

On Aug 2, 2026, at 12:45 PM, Vadim Goncharov <vadimnuclight () gmail com> wrote:

> On Sun, 2 Aug 2026 13:54:36 +0100
> Denis Ovsienko <denis () ovsienko info> wrote:
>
> > * The source code no longer presents BPF_X as a valid case for BPF_RET.
>
> Why not?..

Because not all cBPF (in the sense of the classic BPF machine language) implementations support it.

None of FreeBSD, NetBSD, OpenBSD, DragonFly BSD, Darwin, Illumos (closest thing to Solaris I could get), or Linux 
support it, and neither does the BPF implementation in libpcap.

Perhaps one could argue that it *should* be supported, but, at least in libpcap, we'd only be able to use it in 1) our 
own cBPF interpreter and 2) in-kernel cBPF interpreters in OS versions where we know it's supported, and to get it 
supported in them, you'd have to get the individual OS developers to add support.
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