cvs commit: src/sys/dev/em if_em.c if_em.h

Harald Schmalzbauer h.schmalzbauer at
Wed Feb 8 08:30:57 PST 2006

Am Donnerstag, 12. Januar 2006 23:01 schrieb Gleb Smirnoff:
> On Thu, Jan 12, 2006 at 06:47:00PM +0100, Harald Schmalzbauer wrote:
> H> Am Mittwoch, 11. Januar 2006 01:30 CEST schrieb Scott Long:
> H> > scottl      2006-01-11 00:30:25 UTC
> H> >
> H> >   FreeBSD src repository
> H> >
> H> >   Modified files:
> H> >     sys/dev/em           if_em.c if_em.h
> H> >   Log:
> H> >   Significant performance improvements for the if_em driver:
> H> >
> H> >   - Only update the rx ring consumer pointer after running through the
> H> > rx loop, not with each iteration through the loop.
> H> >   - If possible, use a fast interupt handler instead of an ithread
> H> > handler.  Use the interrupt handler to check and squelch the
> interrupt, H> > then schedule a taskqueue to do the actual work.  This has
> three H> > benefits:
> H>
> H> Thank you very much for your work! Since I'm using many em cards and
> can't H> get higher tranfer rates compared to fxp (but I wanted to double
> it so I H> spent some money to replace F-Eth equipment with GbE) I'd like
> to apply H> your work to RELENG_6. I made the attached diff, but compiler
> stops here: H>
> H> /usr/src/sys/dev/em/if_em.c:3178:34: macro "VLAN_INPUT_TAG" requires 4
> H> arguments, but only 3 given
> H> mkdep: compile failed
> H> *** Error code 1
> H>
> H> Stop in /usr/obj/GUNE/usr/src/sys/CUV-LV.
> H> *** Error code 1
> H>
> H> I have no idea how to correct this, could you please help me? Or isn't
> it H> that simple, eg. VLAN isn't the same level in RELENG_6 and -current?
> I'm going to merge the VLAN_INPUT_TAG() change soon. But merging em(4)
> requires also a lot of taskqueue code merging.

Thanks for your work, I saw that you merged the VLAN code some time ago to 
RELENG_6. Is there any chance that the taskqueue code and then the new em 
code will make it into 6.1?
I'd really love to see my em's shifting more than 130mbit/s with ftp... ;)


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