On Tuesday 11 April 2006 00:54, Woodruff, Robert J wrote:
I am not sure this is a openib issue, but perhaps rather a bug in the
utilities that assumed the size of a MAC address is 8 bytes.
I am not sure if that is the case with this one, but I know it was
the case in some of the user
Dotan I think that maybe the problem is not in the user level
Dotan stack or in the utilities , but in the linux kernel (in the
Dotan module that handles this socket ioctl)
Yes, the problem is in a patch that Red Hat applies to the 2.6.9
kernel in RHEL4. Full details are in the
Roland wrote,
Dotan I think that maybe the problem is not in the user level
Dotan stack or in the utilities , but in the linux kernel (in the
Dotan module that handles this socket ioctl)
Yes, the problem is in a patch that Red Hat applies to the 2.6.9
kernel in RHEL4. Full details
Roland wrote,
tcpdump will work fine. It doesn't look at the hardware address in
the structure at all.
- R.
I removed the check and indeed tcpdump does now appear to work in
a modified 2.6.9-34EL kernel. I can add this change to my
backport-to-2.6.9 patches for 2.6.9-34EL for people that
; openib-general@openib.org
Subject: RE: [openib-general] tcpdump command issue on IB network
Roland wrote,
tcpdump will work fine. It doesn't look at the hardware address in
the structure at all.
- R.
I removed the check and indeed tcpdump does now appear to work in
a modified 2.6.9-34EL
Could you plese check in binaries to svn, or let me get them some other
way? Thanks
Scott
I'll add it to my next set of backport patches and test RPMS and let you
know
when they are checked in, might be a day or 2, since I will need to
regression test after I make new patches.
woody
I'll add it to my next set of backport patches and test RPMS
and let you
know
when they are checked in, might be a day or 2, since I will need to
regression test after I make new patches.
For these RPMs, what is something like
kernel-smp-2.6.9-34.OpenIB.6055.trunk.EL.root.x86_64.rpm? Why
Scott For these RPMs, what is something like
Scott kernel-smp-2.6.9-34.OpenIB.6055.trunk.EL.root.x86_64.rpm?
Scott Why would I want to test that instead of the RH 2.6.9-34
Scott kernel?
Because it has things like the tcpdump problem fixed...
Scott For these RPMs, what is something like
Scott kernel-smp-2.6.9-34.OpenIB.6055.trunk.EL.root.x86_64.rpm?
Scott Why would I want to test that instead of the RH 2.6.9-34
Scott kernel?
Because it has things like the tcpdump problem fixed...
Bummer, there's no way to get
Scott Bummer, there's no way to get just a tcpdump binary that
Scott will work with RHEL4 kernel?
You could do it I guess but no one has come up with the patch...
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Scott wrote,
Bummer, there's no way to get just a tcpdump binary that will work with
RHEL4 kernel?
Scott
I think that net/core/dev.c is part of the core kernel and not a loadable
module. Also, not sure if tcpdump can be modified to work with the kernel
that has the overflow check.
woody
Scott Roland, can I talk you into doing it?
Not any time soon... I have plenty to do as it is, and I don't have
that much interest in providing a workaround for a Red Hat bug that
isn't present in the standard kernel.
- R.
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Scott wrote,
Bummer, there's no way to get just a tcpdump binary that will work with
RHEL4 kernel?
Scott
You can also apply this patch to your RHEL4 kernel source and rebuild the
kernel.
diff -Naurp linux-2.6.9/net/core/dev.c linux-2.6.9-fixups/net/core/dev.c
--- linux-2.6.9/net/core/dev.c
Title: tcpdump command issue on IB network
I opened a bug on this a couple of months
ago.
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=180980
Scott
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jerome
TaylorSent: Monday, April 10, 2006 2:46 PMTo:
Jerome wrote,
# tcpdump -i ib0
Tcpdump: ioctl: Value too large for defined data type.
From what I remember, I think there may be several utilities that don't
work with
IPoIB since they changed the MAC address size.
woody
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. If this is the
case, then
the utility should be fixed.
my 2 cents,
woody
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Scott Weitzenkamp
(sweitzen)Sent: Monday, April 10, 2006 2:51 PMTo: Jerome
Taylor; openib-general@openib.orgSubject: RE: [openib-general]
tcpdump command issue
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