NetBSD Problem Report #50933
From www@NetBSD.org Thu Mar 10 13:34:19 2016
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Date: Thu, 10 Mar 2016 13:34:18 +0000 (UTC)
From: 6bone@6bone.informatik.uni-leipzig.de
Reply-To: 6bone@6bone.informatik.uni-leipzig.de
To: gnats-bugs@NetBSD.org
Subject: can not enable the interface capabilities at ixg0
X-Send-Pr-Version: www-1.0
>Number: 50933
>Category: kern
>Synopsis: can not enable the interface capabilities at ixg0
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: dyoung
>State: feedback
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Thu Mar 10 13:35:00 +0000 2016
>Closed-Date:
>Last-Modified: Mon Jun 07 22:17:05 +0000 2021
>Originator: Uwe Toenjes
>Release: netbsd-7
>Organization:
University of Leipzig
>Environment:
NetBSD 6bone.informatik.uni-leipzig.de 7.0_STABLE NetBSD 7.0_STABLE (MYCONF7.gdb) #0: Sat Feb 13 12:32:12 CET 2016 root@6bone.informatik.uni-leipzig.de:/usr/obj/sys/arch/amd64/compile/MYCONF7.gdb amd64
>Description:
ifconfig ixg0 reports
ixg0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
capabilities=fff80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx>
capabilities=fff80<TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx,TCP6CSUM_Rx>
capabilities=fff80<TCP6CSUM_Tx,UDP6CSUM_Rx,UDP6CSUM_Tx,TSO6,LRO>
enabled=42b80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Tx>
enabled=42b80<UDP4CSUM_Tx,TSO6>
ec_capabilities=7<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU>
ec_enabled=7<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU>
address: a0:36:9f:26:8e:7c
media: Ethernet autoselect
I try to activate the capabilities.
I try to activate the capabilities.
ifconfig ixg0 tso4 tso6 - works
ifconfig ixg0 ip4csum - works
ifconfig ixg0 tcp4csum
ifconfig: SIOCSIFCAP: Invalid argument
ifconfig ixg0 tcp4csum-rx
ifconfig: SIOCSIFCAP: Invalid argument
ifconfig ixg0 udp4csum-tx - works
ifconfig ixg0 udp4csum-rx
ifconfig: SIOCSIFCAP: Invalid argument
ifconfig ixg0 udp4csum
ifconfig: SIOCSIFCAP: Invalid argument
The same for tcp6csum and udp6csum
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
From: Hauke Fath <hf@spg.tu-darmstadt.de>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Subject: Re: kern/50933: can not enable the interface capabilities at ixg0
Date: Thu, 12 May 2016 16:41:57 +0200
[ixg(4) rejecting some of the capabilities it lists as supported]
I can confirm this problem.=20
FWIW, it is also present in a netbsd-7 kernel with ixg(4) backported=20
from -current.
Cheerio,
hauke
--=20
The ASCII Ribbon Campaign Hauke Fath
() No HTML/RTF in email Institut f=FCr Nachrichtentechnik
/\ No Word docs in email TU Darmstadt
Respect for open standards Ruf +49-6151-16-21344
Responsible-Changed-From-To: kern-bug-people->msaitoh
Responsible-Changed-By: msaitoh@NetBSD.org
Responsible-Changed-When: Thu, 19 May 2016 06:50:11 +0000
Responsible-Changed-Why:
mine.
From: David Young <dyoung@pobox.com>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
netbsd-bugs@netbsd.org
Subject: Re: kern/50933: can not enable the interface capabilities at ixg0
Date: Thu, 19 May 2016 15:02:03 -0500
On Thu, Mar 10, 2016 at 01:35:00PM +0000, 6bone@6bone.informatik.uni-leipzig.de wrote:
> >Number: 50933
> >Category: kern
> >Synopsis: can not enable the interface capabilities at ixg0
> >Confidential: no
> >Severity: serious
> >Priority: medium
> >Responsible: kern-bug-people
> >State: open
> >Class: sw-bug
> >Submitter-Id: net
> >Arrival-Date: Thu Mar 10 13:35:00 +0000 2016
> >Originator: Uwe Toenjes
> >Release: netbsd-7
> >Organization:
> University of Leipzig
> >Environment:
> NetBSD 6bone.informatik.uni-leipzig.de 7.0_STABLE NetBSD 7.0_STABLE (MYCONF7.gdb) #0: Sat Feb 13 12:32:12 CET 2016 root@6bone.informatik.uni-leipzig.de:/usr/obj/sys/arch/amd64/compile/MYCONF7.gdb amd64
>
> >Description:
> ifconfig ixg0 reports
>
> ixg0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
> capabilities=fff80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx>
> capabilities=fff80<TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx,TCP6CSUM_Rx>
> capabilities=fff80<TCP6CSUM_Tx,UDP6CSUM_Rx,UDP6CSUM_Tx,TSO6,LRO>
> enabled=42b80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Tx>
> enabled=42b80<UDP4CSUM_Tx,TSO6>
> ec_capabilities=7<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU>
> ec_enabled=7<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU>
> address: a0:36:9f:26:8e:7c
> media: Ethernet autoselect
>
> I try to activate the capabilities.
>
> I try to activate the capabilities.
>
> ifconfig ixg0 tso4 tso6 - works
> ifconfig ixg0 ip4csum - works
>
> ifconfig ixg0 tcp4csum
> ifconfig: SIOCSIFCAP: Invalid argument
On ixg, all of the L4 checksum-offload capabilities (tcp4csum, tcp6csum,
udp4csum, udp6csum) have to be activated/deactivated together, because
that is how the hardware works. If that is not already mentioned in the
manual page, my apologies.
I would argue that given the limitations of SIOCSIFCAP, today, this is
the least bad way for ixg offload capabilities to work. I'd be happy to
talk on tech-net about how to bring the ioctl interface up to snuff.
Dave
--
David Young
dyoung@pobox.com Urbana, IL (217) 721-9981
Responsible-Changed-From-To: msaitoh->dyoung
Responsible-Changed-By: msaitoh@NetBSD.org
Responsible-Changed-When: Fri, 20 May 2016 04:29:56 +0000
Responsible-Changed-Why:
Please add note to the manual :)
State-Changed-From-To: open->analyzed
State-Changed-By: msaitoh@NetBSD.org
State-Changed-When: Fri, 20 May 2016 04:29:56 +0000
State-Changed-Why:
This is not a bug but the limitation of the chip.
From: "Christos Zoulas" <christos@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc:
Subject: PR/50933 CVS commit: src/sbin/ifconfig
Date: Tue, 9 Mar 2021 09:39:43 -0500
Module Name: src
Committed By: christos
Date: Tue Mar 9 14:39:43 UTC 2021
Modified Files:
src/sbin/ifconfig: ifconfig.8
Log Message:
PR/50933: Uwe Toenjes: Document hardware limitations
To generate a diff of this commit:
cvs rdiff -u -r1.121 -r1.122 src/sbin/ifconfig/ifconfig.8
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
State-Changed-From-To: analyzed->feedback
State-Changed-By: dholland@NetBSD.org
State-Changed-When: Mon, 07 Jun 2021 22:17:05 +0000
State-Changed-Why:
is Christos's change adequate?
>Unformatted:
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