NetBSD Problem Report #44374

From www@NetBSD.org  Wed Jan 12 07:28:55 2011
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Date: Wed, 12 Jan 2011 07:28:54 +0000 (UTC)
From: explorer@flame.org
Reply-To: gnats-bugs@NetBSD.org
To: gnats-bugs@NetBSD.org
Subject: bridge to interface with checksum offloading causes the interface to stop working
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>Number:         44374
>Category:       kern
>Synopsis:       bridge to interface with checksum offloading causes the interface to stop working
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jan 12 07:30:00 +0000 2011
>Closed-Date:    Mon Mar 23 17:38:51 +0000 2020
>Last-Modified:  Mon Mar 23 17:40:01 +0000 2020
>Originator:     Michael Graff
>Release:        5.1_STABLE
>Organization:
>Environment:
NetBSD isc.home.flame.org 5.1_STABLE NetBSD 5.1_STABLE (XEN3_DOM0) #0: Sun Jan  9 10:04:51 UTC 2011  root@isc.home.flame.org:/usr/src/sys/arch/amd64/compile/XEN3_DOM0 amd64
>Description:
If I enable checksum offloading on my "wm0" interface with:

  ifconfig wm0 ip4csum tcp4csum udp4csum tso4 tcp6csum udp6csum tso6

which enables all available offloading functions, when NetBSD configures the bridge with:

  create
  !brconfig $int add wm0 up

the interface stops receiving packets.  tcpdump shows traffic on the interface, and it appears transmitting packets continues to function.
>How-To-Repeat:

>Fix:
Disable all offloading functionality, and the interface works.

>Release-Note:

>Audit-Trail:

State-Changed-From-To: open->feedback
State-Changed-By: msaitoh@NetBSD.org
State-Changed-When: Thu, 10 Oct 2019 04:59:43 +0000
State-Changed-Why:
bridge+offload problems have been fixed by me and rin@. At least netbsd-9 have those fixes. Is it OK to close this ticket?


From: Michael Graff <explorer@flame.org>
To: gnats-bugs@netbsd.org
Cc: kern-bug-people@netbsd.org, netbsd-bugs@netbsd.org,
 gnats-admin@netbsd.org, "msaitoh@netbsd.org" <msaitoh@netbsd.org>
Subject: Re: kern/44374 (bridge to interface with checksum offloading causes the interface to stop working)
Date: Thu, 10 Oct 2019 05:29:22 -0500

 Yes.

 While there, please remove me from all future NetBSD mailings. All bugs, all=
  periodic reminders, everything. I was told to fuck off years ago because I d=
 ared ask a question about kernel internals.=20

 > On Oct 9, 2019, at 23:59, "msaitoh@netbsd.org" <msaitoh@netbsd.org wrote:
 >=20
 > =EF=BB=BFSynopsis: bridge to interface with checksum offloading causes the=
  interface to stop working
 >=20
 > State-Changed-From-To: open->feedback
 > State-Changed-By: msaitoh@NetBSD.org
 > State-Changed-When: Thu, 10 Oct 2019 04:59:43 +0000
 > State-Changed-Why:
 > bridge+offload problems have been fixed by me and rin@. At least netbsd-9 h=
 ave those fixes. Is it OK to close this ticket?
 >=20
 >=20
 >=20

State-Changed-From-To: feedback->closed
State-Changed-By: jdolecek@NetBSD.org
State-Changed-When: Mon, 23 Mar 2020 17:38:51 +0000
State-Changed-Why:
Submitter confirms it's OK to close the ticket. Also remove from Reply-To
as they want to be removed from NetBSD mailings.


From: jdolecek@NetBSD.org
To: kern-bug-people@netbsd.org,netbsd-bugs@netbsd.org,gnats-admin@netbsd.org,jdolecek@NetBSD.org,gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/44374 (bridge to interface with checksum offloading causes the interface to stop working)
Date: Mon, 23 Mar 2020 17:38:51 +0000 (UTC)

 Synopsis: bridge to interface with checksum offloading causes the interface to stop working

 State-Changed-From-To: feedback->closed
 State-Changed-By: jdolecek@NetBSD.org
 State-Changed-When: Mon, 23 Mar 2020 17:38:51 +0000
 State-Changed-Why:
 Submitter confirms it's OK to close the ticket. Also remove from Reply-To
 as they want to be removed from NetBSD mailings.



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