unable to use BPF Just-In-Time compiler

[Navdeep Parhar]

Use "options BPF_JITTER" in your kernconf.  If this is new code you must
include opt_bpf.h in it.  If it's part of a module then the module's
makefile must have opt_bpf.h in its SRCS.  When in doubt take a look at
all the obt_bpf.h in your obj tree after the buildkernel and see if they
have "#define BPF_JITTER 1" or not.  Remove all opt_bpf.h files in the
obj tree and retry buildkernel if all else fails.

Regards,
Navdeep

On Mon, Sep 19, 2016 at 10:41:38AM +0000, KrishnamRaju ErapaRaju wrote:
> Thanks for your response Bjeorn.
> 
> I added "device         bpf_jitter"  line as you suggested, but not luck.
> Still no code under BPF_JITTER macro is executing.
> 
> Please help me  enabling JIT compiler.
> 
> Thanks,
> Krishna.
> -----Original Message-----
> From: Bjoern A. Zeeb [mailto:bzeeb-lists at lists.zabbadoz.net] 
> Sent: Sunday, September 18, 2016 2:41 AM
> To: KrishnamRaju ErapaRaju <Krishna2 at chelsio.com>
> Cc: freebsd-net at freebsd.org
> Subject: Re: unable to use BPF Just-In-Time compiler
> 
> On 15 Sep 2016, at 5:32, KrishnamRaju ErapaRaju wrote:
> 
> > Hi,
> >
> > I want to use BPF JIT Kernel APIs in FreeBSD(like: bpf_jitter(), 
> > etc..), for implementing TCP connection packet filtering.
> >
> > I have followed below instructions as specified in: 
> > https://lists.freebsd.org/pipermail/freebsd-current/2005-December/0586
> > 03.html
> >
> > STEPS followed:
> > ---------------------
> > cp /usr/src/sys/amd64/conf/GENERIC /usr/src/sys/amd64/conf/MYKERNEL
> >
> > And added below line in MYKERNEL config file.
> >         options BPF_JITTER
> 
> I think you want
> 
> device         bpf_jitter
> 
> The options line to my understanding only turns it on by default.
> 
> >
> > make buildkernel KERNCONF=MYKERNEL
> > make installkernel KERNCONF=MYKERNEL
> > reboot
> >
> > But after reboot the flag BPF_JITTER is not getting enabled(all the 
> > code inside "#ifdef BPF_JITTER" is not getting executed).
> >
> > Am I missing something?
> >
> > Also it looks like there are not many updates to BPF JIT code since 
> > 2005, is it stable? anyone using it?
> >
> > Thanks,
> > Krishna.
> > _______________________________________________
> > freebsd-net at freebsd.org mailing list
> > https://lists.freebsd.org/mailman/listinfo/freebsd-net
> > To unsubscribe, send any mail to "freebsd-net-unsubscribe at freebsd.org"
> _______________________________________________
> freebsd-net at freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe at freebsd.org"