[illumos-Discuss] recent sunos kernels has big problem with qemu's e1000 driver

[dpecka]

well, i'm not expert in any case for such a thing, but i'd like to
suppose, that the emulated driver attempts to be identical as a hardware
however it doesn't in real ..

anyway, symptoms are suspicious: e1000 driver runs in every other OS
which i've tested and also with sunos kernel it's just *only driver
which seems like is taken the best.

dladm correctly recognizes link state and other
infos, /dev/{tcp,ip,e1000g$n} seems like supporting all expected
options. Just only receiving is not ok. in logs is nothing and i was
been also unable to dig out *anything from mdb

if i assign address on there and ping some nonexistant ip addr i can see
on *parent system expectable results:

# tcpdump -i oi0 broadcast
tcpdump: verbose output suppressed, use -v or -vv for full protocol
decode
listening on oi0, link-type EN10MB (Ethernet), capture size 65535 bytes
12:34:07.916352 ARP, Request who-has 192.168.99.100 (Broadcast) tell
kokina-s10u8, length 46
12:34:08.415916 ARP, Request who-has 192.168.99.100 (Broadcast) tell
kokina-s10u8, length 46
12:34:09.415760 ARP, Request who-has 192.168.99.100 (Broadcast) tell
kokina-s10u8, length 46

^^ vice versa not .. i can't see even *any packet by using snoop.

it could be also very helpful, if someone would point me how to hunt
this down by using mdb/dtrace hence this issue and its symptoms are just
exciting ..

regards, daniel ..

ps. as i've written in bugreport i experienced this also with snadard
sunos kernel from solaris 10u7 and 10u8 as well as in opensolaris

On Wed, 2010-09-15 at 07:56 -0700, Garrett D'Amore wrote:
> On Wed, 2010-09-15 at 16:01 +0200, dpecka wrote:
> > hi there,
> > 
> > https://bugs.launchpad.net/qemu/+bug/638955
> > 
> > i've filled this bugreport ^^ .. all is in there
> > 
> > i'd like to know only, if this could be considered as a problem of qemu
> > or as a problem in sunos kernel ..
> > 
> > regards and thanks guys for all your effort and care with illumos, i
> > believe now, that we'll be happy at the end that oraclists executed
> > osol ..
> > 
> 
> 
> Its probably a qemu bug, but I'm not sure.  Its frequently the case that
> drivers are coded to hardware, and the emulation of the hardware isn't
> quite identical, so drivers written on different operating systems might
> not function.
> 
> 	- Garrett
> 
> 
-- 
Best Regards / S Pozdravem

Daniel Pecka
--------------------------------------------------
SunOS Specialist, IT Administrator

www.techniservit.cz

mailto:<dpecka at techniservit.cz>
callto:<+0420603166533>