HEADS UP: inpcb/inpcbinfo rwlocking: coming to a 7-STABLE branch near you

[Jeremy Chadwick]

On Wed, Aug 13, 2008 at 05:35:21PM -0400, Mike Tancsa wrote:
> At 05:25 PM 8/13/2008, Jeremy Chadwick wrote:
>> >
>> > I will try a kernel before the em changes, as thats the only other thing
>> > I can think of off the top of my head.
>
> I commented out em from the kernel and loaded up a previous version via 
> kld, but still the same thing, although not nearly as much
>
> 0[smtp2]# arp -na | wc
>       89     680    5081
> 0[smtp2]#
>
> em0 at pci0:0:4:0: class=0x020000 card=0x387010f1 chip=0x10768086 rev=0x05 
> hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '82541EI Gigabit Ethernet Controller'
>     class      = network
>     subclass   = ethernet
>     cap 01[dc] = powerspec 2  supports D0 D3  current D0
>     cap 07[e4] = PCI-X supports 2048 burst read, 1 split transaction
> em1 at pci0:0:5:0: class=0x020000 card=0x387010f1 chip=0x10768086 rev=0x05 
> hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '82541EI Gigabit Ethernet Controller'
>     class      = network
>     subclass   = ethernet
>     cap 01[dc] = powerspec 2  supports D0 D3  current D0
>     cap 07[e4] = PCI-X supports 2048 burst read, 1 split transaction
>
>> That almost looks like some kind of ARP storm, sans repetitive entries
>> (that definitely looks odd).  Does tcpdump on em1 show a particular
>> machine or router demanding MACs for 64.7.153.0/24 (or whatever the
>> block is)?
>
> No, its very, very quiet.  All the other machines on the 2 networks are 
> just fine.
>
> Any suggestions on what kernel to go back to start from ?

Seems relevant, and might give you some dates/revisions to roll back to
for testing.  Robert will have to confirm if some of the below commits
could wreck havok -- I'm not familiar with the code, I just pay
semi-close attention to the commits... :-)

http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/if_ether.c

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |