ixgbe(4) and "Could not setup receive structures"

[K. Macy]

That should be plenty, but how large are your receive queues?

\Kip

On Thu, Apr 14, 2011 at 4:18 PM, Leon Meßner
<l.messner at physik.tu-berlin.de> wrote:
> On Thu, Apr 14, 2011 at 03:44:23PM +0200, K. Macy wrote:
>> How many 9k jumbo clusters are available?
>
> Does this output suffice as information ?
>
> # netstat -m
> 8194/1031/9225 mbufs in use (current/cache/total)
> 8192/518/8710/25600 mbuf clusters in use (current/cache/total/max)
> 8192/512 mbuf+clusters out of packet secondary zone in use
> (current/cache)
> 0/5/5/12800 4k (page size) jumbo clusters in use
> (current/cache/total/max)
> 0/0/0/6400 9k jumbo clusters in use (current/cache/total/max)
> 0/0/0/3200 16k jumbo clusters in use (current/cache/total/max)
> 18432K/1313K/19746K bytes allocated to network (current/cache/total)
> 0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
> 0/0/0 requests for jumbo clusters denied (4k/9k/16k)
> 0/0/0 sfbufs in use (current/peak/max)
> 0 requests for sfbufs denied
> 0 requests for sfbufs delayed
> 0 requests for I/O initiated by sendfile
> 0 calls to protocol drain routines
>
>> On Thu, Apr 14, 2011 at 3:05 PM, Leon Meßner
>> <l.messner at physik.tu-berlin.de> wrote:
>> > Hi,
>> >
>> > i tried setting the mtu on one of my ixgbe(4) intel NICs to support
>> > jumbo frames. This is on a box with RELENG_8 from today.
>> >
>> > # ifconfig ix0 mtu 9198
>> >
>> > I then get the following error:
>> >
>> > # tail -n 1 /var/log/messages
>> > Apr 14 12:48:43 siloneu kernel: ix0: Could not setup receive structures
>> >
>> > I already tried the following patch because of Jack Vogel's advice given
>> > in the following thread on -stable in Oct. last year, which still
>> > produces the same error message and leaves the box unpingable:
>> >
>> > http://lists.freebsd.org/pipermail/freebsd-stable/2010-October/059541.html
>> >
>> > # cat ~/patches/ixgbe.num_queues_to_4.patch
>> > --- /root/.vimbackup/ixgbe.c~   2011-04-12 22:14:27.000000000 +0000
>> > +++ sys/dev/ixgbe/ixgbe.c       2011-04-12 22:14:27.000000000 +0000
>> > @@ -273,7 +273,7 @@ TUNABLE_INT("hw.ixgbe.hdr_split", &ixgbe
>> >  * number of cpus. Each queue is a pair
>> >    * of RX and TX rings with a msix vector
>> >      */
>> >      -static int ixgbe_num_queues = 0;
>> >      +static int ixgbe_num_queues = 4;
>> >       TUNABLE_INT("hw.ixgbe.num_queues", &ixgbe_num_queues);
>> >
>> >         /*
>> >
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